CN220213105U - Titanium material root canal plug tip and series thereof - Google Patents
Titanium material root canal plug tip and series thereof Download PDFInfo
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- CN220213105U CN220213105U CN202321699668.0U CN202321699668U CN220213105U CN 220213105 U CN220213105 U CN 220213105U CN 202321699668 U CN202321699668 U CN 202321699668U CN 220213105 U CN220213105 U CN 220213105U
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C5/00—Filling or capping teeth
- A61C5/50—Implements for filling root canals; Methods or instruments for medication of tooth nerve channels
Landscapes
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Preparations (AREA)
Abstract
The application discloses a titanium material root canal apex and a series thereof to solve the problems that the stability of the existing root canal apex is not ideal enough and a sealing agent is easy to run off when a dental crown is flushed, and the filling effect is affected. The root canal plug tip is divided into a root canal section and a dental crown section, wherein the surface of the dental crown section is provided with a retention groove section which plays a role in fixing the root canal plug tip in a dental body after filling fluid resin or glass ion adhesive; the surface of the conical root canal section near the area of the dental crown section is provided with a plurality of circles of horizontal blades, the root canal thread section is used for filling the sealant, the grooves of the root canal horizontal blade section not only can be filled with the sealant, so that the sealant in the thread groove cannot overflow from the groove channel when the sealant in the root canal rotates to enter, the sealant in the root canal is ensured to have enough quantity and is compressed and compacted in the gaps between the root canal cavity and the thread groove, but also because the root canal thread section is isolated by the root canal horizontal blade section, the sealant in the root canal can be protected from being washed and diluted later and from being polluted by saliva.
Description
Technical Field
The present application relates to dental medical instruments, and in particular to a root canal apex and its series.
Background
Endodontic treatment is the primary treatment for pulp and periapical lesions. After the preliminary disinfection of the root canal is finished, how to safely and tightly fill each root canal, and the root canal treatment is focused and difficult by perfectly closing the root tip holes, and the defect of root canal filling equipment also becomes the biggest pain point in the dental root canal treatment industry.
The existing root canal filling technology is that root canal sealing agents and gutta-percha points are combined for use, but almost all root canal sealing agents have different degrees of volume shrinkage after filling and solidification, so that the concept of filling as few root canal sealing agents and as much gutta-percha as possible, namely a root canal filling method with the gutta-percha points as the main material and the root canal sealing agents as the auxiliary material, appears in the industry, and two current clinical root canal filling technology systems, namely a cold gutta-percha lateral extrusion filling technology and a hot gutta-percha vertical pressurization filling technology are formed.
There are literature reports of root canal filling difficulties and misareas (Zhang Chen, journal of Chinese stomatology, volume 35, 3 rd): the gutta-percha point has a shrinkage rate of 7% after heating and cooling, so that micro gaps, micro leakage, incomplete root point sealing and secondary infection of a root point sealing area appear after filling of a root canal, and finally, root canal treatment failure is caused.
Patent document CN111388111a discloses a titanium material root canal plug tip and equipment, the whole body of which is made of medical pure titanium or titanium alloy, and is mainly divided into a root tip section and a handle section; the root tip section of the root canal plug tip is provided with external threads, on one hand, the external thread rotating blade is beneficial to being embedded into a tooth body, the preliminary cutting damage amount to the inner wall of the root canal of the tooth body is effectively reduced, the root filling difficulty is reduced, on the other hand, the thread groove naturally has larger surface area and space, and the thread groove is filled with a medicament, so that the maximum density of the filling material in the root canal can be maintained for a long time; the handle segment of the root canal apex remains in the crown cavity and can replace a root canal pin or a fiber stub.
However, the titanium material root canal plug tip mainly depends on single-end fixation of the root tip section, so that the stress in the root canal is not uniform enough, and the filling process and the stability in the later period are affected; in addition, when excess sealer in the crown is flushed after filling the root canal, the water flow tends to flush away some sealer in the thread groove of the root canal segment, resulting in insufficient final filling.
Disclosure of Invention
The application provides a novel titanium material root canal apex and a series thereof, which are used for solving the problems that the stability of the existing root canal apex is not ideal enough, and a sealing agent is easy to run off when a dental crown is flushed, and finally the filling effect is influenced.
In order to achieve the above object, the present application provides the following technical solutions:
the titanium material root canal plug tip is of an integrated structure and comprises a root canal section and a dental crown section which are coaxially and sequentially arranged from bottom to top; the root pipe section is a cone, the surface of the root pipe section main body is provided with external threads, the surface of the area of the root pipe section, which is close to the dental crown section, is provided with a plurality of circles of horizontal blades which are respectively marked as a root pipe thread section and a root pipe horizontal blade section, and grooves of the root pipe thread section and the root pipe horizontal blade section are used for filling the prepared sealing agent; the dental crown section is a cylinder, a cuboid or a triangular prism, and the surface of the dental crown section is provided with a retention groove.
Optionally, the solid axis taper of the root section is less than the outer profile taper of the root section.
Optionally, the part of the solid axis of the root tube section, which is close to the dental crown section, is narrowed from top to bottom to form a frustum portion, and a thinner (as the solid axis main body part of the root tube section) cone portion is formed from below the frustum portion, wherein the cone portion has a smaller conicity than the frustum portion.
Optionally, the outer contour of the root section and the taper of the solid axis refer to the taper specification of the dental root section preparation machine expanding needle, wherein the outer contour taper of the root section is 04 taper, 06 taper or 08 taper, and the solid axis taper of the root section is 01 taper, 02 taper or 03 taper. Further, the taper of the actual axis of the root canal plug can be designed into a through taper or a variable taper according to the clinical practical application scene, the through taper is a single 01 taper or a 02 taper or a 03 taper, and the variable taper is a combined design of the taper from the bottom to the top of the solid axis of the root canal plug. The taper of the through cone is characterized in that the root tube section of the titanium material root tube plug tip is softer in whole or maintains certain strength in whole; the variable taper is characterized in that the tip of the titanium root canal plug tip root canal Duan Gen can keep better flexibility, and the upper part of the root canal segment with certain strength needs to be ensured to keep certain strength.
Optionally, for the titanium material root canal tip with the outer contours 04 and 06 of the root canal section taper, the diameter of the maximum end of the outer contour of the root canal section is equal to the diameter of the outer contour of the dental crown section; for the titanium material root canal tip with the taper of the outer profile 08 of the root canal section and above, the outer profile of the dental crown section is radially retracted relative to the outer profile of the root canal section, so that a shoulder is formed between the root canal section and the dental crown section.
Optionally, the crown segment retention groove segment takes the form of a thread or a horizontal blade or a horizontal groove.
Optionally, the thread form angle of the root canal thread section is no greater than 60 degrees.
The titanium material root canal plug tip series comprises the titanium material root canal plug tips with various specifications, wherein the specifications refer to the specifications of a dental root canal preparation machine expanding needle, and the various specifications comprise the specifications that the external profile taper of a root canal section cone is the same as the 04 taper, the 06 taper and the 08 taper of the dental root canal preparation machine expanding needle standard respectively.
Optionally, the multiple specifications further include specifications of the solid axis taper of the root pipe section, which are at least divided into 01 taper, 02 taper and 03 taper. That is, any one specification of the 04-08 taper of the outer contour of the pipe section can be matched with the entity axis of any one specification of the 01-03 taper specification.
Optionally, the multiple specifications further include a specification of a sectional variable taper of the solid axis of the root pipe section, and the sectional variable taper is that the solid axis is 01 taper, 02 taper and 03 taper from bottom to top in sequence. For example, one solid core tip third is 01 taper, the middle third is 02 taper, the large diameter end third is 03 taper, or other combinations of tapers from small to large.
Compared with the prior art, the application has the following beneficial effects:
1. the root canal plug tip is mainly divided into a root canal section and a dental crown section, wherein the surface of the cylindrical dental crown section is provided with a retention groove section which plays a role in fixing the root canal plug tip in a dental body after filling fluid resin or glass ion adhesive; the surface of the conical root canal section near the area of the dental crown section is provided with a plurality of circles of horizontal blades, the root canal thread section is used for filling the sealant, the grooves of the root canal horizontal blade section not only can be filled with the sealant, so that the sealant in the thread groove cannot overflow from the groove channel when the sealant in the root canal rotates to enter, the sealant in the root canal is ensured to have enough quantity and is compressed and compacted in the gaps between the root canal cavity and the thread groove, but also because the root canal thread section is isolated by the root canal horizontal blade section, the sealant in the root canal can be protected from being washed and diluted later and from being polluted by saliva.
2. The root canal horizontal blade segment can be filled with fluid resin adhesive or glass ion and other tooth filling materials at the subsequent time, and also plays a certain auxiliary fixing role.
Drawings
For a more visual illustration of the prior art and the present application, several exemplary drawings are presented below. It should be understood that the specific shape and configuration shown in the drawings should not be considered in general as limiting upon the practice of the present application; for example, based on the technical concepts and exemplary drawings disclosed herein, those skilled in the art have the ability to easily make conventional adjustments or further optimizations for the add/subtract/assign division, specific shapes, positional relationships, connection modes, dimensional scaling relationships, etc. of certain units (components).
FIG. 1 is a schematic illustration of a titanium material root canal apex employed in one embodiment of the present application;
FIG. 2 is a schematic illustration of a root canal apex introduced into a root canal;
fig. 3 is a schematic view of a titanium material root canal apex (with shoulder) used in another embodiment of the present application.
Fig. 4 is a modification of the embodiment shown in fig. 3.
Reference numerals illustrate:
1. a root pipe section; 101. the solid axis of the root pipe section; 102. external threads of the root pipe section; 103. horizontal blades of the root pipe section;
2. a crown segment; 201. a crown segment solid axis; 202. external threads of the crown section.
Detailed Description
The present application is further described in detail below with reference to the attached drawings.
In the description of the present application: the terms "first," "second," and the like are intended to distinguish between objects of interest without a particular meaning in terms of technical connotation (e.g., not to be construed as emphasis on degree or order, etc.). The expressions "comprising", "including", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).
The terms such as "upper", "lower", "left", "right", "middle", and the like, as referred to in this application, are generally used for convenience in visual understanding with reference to the drawings, and are not intended to be an absolute limitation of the positional relationship in actual products. Such changes in relative positional relationship are considered to be within the scope of the present description without departing from the technical concepts disclosed herein.
In one embodiment, the titanium root canal plug tip with an integral structure is shown in fig. 1, and comprises a root canal section 1 and a dental crown section 2 which are coaxially and sequentially arranged from bottom to top; the root section 1 is a cone, the external taper of the root section is consistent with the specification taper of a dental root canal preparation machine expanding needle (the types of which can be configured such as 04 taper, 06 taper and 08 taper), the surface of the root section is provided with a root section external thread 102, and the thread groove of the root section is used for filling the prepared sealing agent, so that a thin-blade non-standard thread form which tends to be horizontal is preferred, for example, the thread rise angle is 0-30 degrees. For further medicament filling effect it is suggested that the thread form angle of the root canal thread segments is not more than 60 degrees, e.g. 15 to 45 degrees. The dental crown section 2 is a cylinder (the cylinder refers to a dental crown section main body which is a cylinder, and a shape which is more convenient to clamp can be processed locally based on the cylinder according to actual needs), and the surface of the dental crown section is provided with a dental crown section external thread 202 which mainly plays a role in retention and can also be changed into a horizontal blade form; the crown section is positioned in the cavity of the crown after the root canal apex is filled in place, and the root canal apex is secured in the tooth after being filled with a fluid resin or a glass ion adhesive. Besides the cylindrical body, the dental crown section can also be designed into a cuboid or a triangular prism, and the specific shape of the surface-arranged retention groove section is not limited to threads, and can also be a horizontal blade or a horizontal annular groove and the like.
The state of introduction of the titanium material root canal apex into the root canal is shown in fig. 2.
A root canal section horizontal blade 103 is also provided on the upper surface of the root canal section in the area adjacent to the crown section. The function of setting the horizontal blade 103 of the root canal section is:
(1) The thread groove of the root pipe section is formed into a blind groove, so that the sealing agent in the thread groove cannot overflow from the groove when the sealing agent rotates in the root pipe, the sealing agent in the root pipe is ensured to have enough quantity, and the sealing agent is compressed and compacted in the grooves of the root pipe cavity and the thread groove.
(2) The gaps of the horizontal blades can be filled with a sealing agent, or can be filled with a fluid resin adhesive, glass ions or other tooth filling materials, and can be used as boundary marks of the sealing agent and the tooth filling materials.
(3) When the unnecessary sealing agent in the dental crown is prevented from being washed after the root is filled, the sealing agent in the thread groove of the root pipe section is washed away by water flow, each circle of gaps of the thread groove are communicated, the sealing agent can be washed away by the water flow, each circle of gaps of the horizontal blade are not communicated with each other, are the gaps which are independently sealed by each circle and cannot be washed away by the water flow, and the sealing agent in the root pipe can be prevented from being washed away and diluted by saliva.
The solid axis 101 of the root tube section (the solid axis of the metal of the groove bottom of the root tube thread section and the horizontal blade section) and the solid axis 201 of the dental crown section (the solid axis of the metal of the groove bottom of the dental crown thread section) are in smooth transition with a round table, but the solid axis 101 of the root tube section can not be in a standard cone shape, and the threads of the dental crown section 2 only play a role in fixing the root canal plug tip in the dental body after filling fluid resin or glass ion adhesive, so the solid axis 201 of the dental crown section can be thicker; further, as shown in fig. 1 and 3, a portion of the root canal section solid core 101 near the dental crown section (specifically, an upper portion of the solid core of the canal horizontal blade section canal bottom may be significantly narrowed, so that the main body of the root canal section solid core 101 is relatively thinner.
The conicity of the solid axle center 101 of the root tube section has 01 conicity, 02 conicity and 03 conicity, and the conicity of the solid axle center is reduced, so that the softness of the solid axle center can be increased, and the solid axle center is better suitable for the root tube with small bending.
For titanium root canal plugs with a taper of 08 and above, the modification can be further carried out: the outer profile of the crown segment is radially indented relative to the outer profile of the root segment such that a shoulder is formed between the root segment and the crown segment, as shown in fig. 3 and 4. Specifically: the maximum diameter of the maximum end of the external thread of the root tube section (namely the joint with the dental crown section) is larger than that of the external thread of the dental crown section, the external thread diameter of the dental crown section is narrower than that of the maximum end of the external thread of the root tube section by about half a thread width, namely a narrower shoulder is arranged between the root tube section and the dental crown section, and the narrow shoulder is used for reserving a larger gap for the root tube orifice after filling the root tube so as to facilitate flushing and drying redundant sealing agent, so that fluid resin or glass ion adhesive can flow into the root tube orifice better and the root tube plug tip can be fixed in the dental crown better.
In addition, the handle of the root canal apex is removed from the titanium material root canal apex, the length of the root canal apex is reduced, the doctor operation is simpler, the titanium material root canal apex is more friendly to patients with limited opening, the external thread taper of the titanium material root canal apex root canal section and the taper of the solid axis of the thread groove bottom are also subjected to differential design again, the taper and the radial dimension of the solid axis are smaller and finer, so that the flexibility and the plasticity of the root canal apex root canal section are better, the titanium material root canal apex is more suitable for filling of tiny bending root canal, and the application indication of the titanium material root canal apex is enlarged.
The most tip of the root tube section is arc-shaped, the taper of the outer contour of the root tube section and the diameter of the most tip are respectively consistent with the taper and the diameter specification of the most tip of the expanding needle of the dental root tube preparation machine, the specific 04 taper common specification series are 04/025, 04/030 and 04/035, the specific 06 taper common specification series are 06/025 and 06/030, and the like, and the expanding needle can be expanded up and down based on the series data.
The solid axis taper of the root pipe section can be designed into a single through taper according to the clinical practical application scene, and the single through taper is respectively provided with either 01 taper, 02 taper or 03 taper, and the root pipe plug tip of any external contour taper data and any solid axis internal taper data can be designed in a matched mode. In order to increase the flexibility and plasticity of one half of the root tip of the root canal tip root canal thread groove section, and increase the strength of the root canal horizontal blade section, the solid axis taper of the root canal section can be designed into a variable taper according to the clinical practical application scene, namely, the lower half of the solid axis of the root canal tip root canal thread groove section near the root tip is 01 taper, the upper half of the solid axis of the root canal tip root canal thread groove section is 02 taper, and the solid axis of the root canal horizontal blade section is 03 taper. Or other combined designs tapered from 01 to 03 from bottom to top from the root tip body axis.
Typical length parameters of the root plug tip series are 13mm (root length of 7.5mm, crown length of 5.5 mm), 15mm (root length of 8.5mm, crown length of 6.5 mm), 17mm (root length of 9.5mm, crown length of 7.5 mm), 19mm (root length of 10.5mm, crown length of 8.5 mm), 21mm (root length of 11.5mm, crown length of 9.5 mm), 23mm (root length of 12.5mm, crown length of 10.5 mm), 25mm (root length of 13.5mm, crown length of 11.5 mm), 27mm (root length of 15.5mm, crown length of 11.5 mm), 29mm (root length of 17.5mm, crown length of 11.5 mm) and can be extended up and down based on the series of data due to the large difference in tooth form.
The titanium material root canal plug tip provided by the embodiment can be particularly suitable for a sealing agent with a self-expansion effect, and is used as a molding drug bracket, the surface of the molding drug bracket is coated with the sealing agent with the self-expansion effect, the sealing agent is uniformly and accurately led into the root canal, and the sealing agent is compressed and compacted, so that the filling effect is further improved.
Preferably, the physiological environment area and the non-physiological environment area of the teeth are divided, and the root canal treatment thought of sequentially filling the material components in a partitioning and layering manner is adopted. The following describes the operation method, principle and effect of the titanium material root canal apex of the present embodiment for the zonal and layered sequential filling of the material components.
The high-purity bioactive ceramic of the component A enters the physiological environment area and is filled in the first layer: in the physiological environment areas such as the root tip hole area of the micro horn mouth, the root tip peripheral area and the side root canal and the root peripheral surface micro channel except the narrowest place (root tip basal point) of the root canal involved in metabolism with blood circulation, the A-component silicon/calcium phosphate bioactive ceramic hydrogel which has high purity and can be degraded and can stimulate bone cell proliferation is extruded or filled, the root tip mineralization and closure are induced, and the osteoblast is induced to proliferate, differentiate and deposit in the root tip physiological area and the root tip hole in the root tip area, so that good biological root tip sealing is formed.
Into the non-physiological environment area is A, B component mixed biological ceramic to fill the second layer. In the root canal area of the medullary canal in the root tip narrow place of the non-physiological environment area without living marrow and metabolism, nanometer zirconium dioxide, calcium hydroxide, calcium oxide and the like are filled, the calcium hydroxide takes on strong alkalinity to play a role in sterilization and disinfection, and the chemical expansion reaction characteristic of the calcium oxide when meeting water humidity can form good physical sealing; the calcium oxide and the calcium hydroxide can keep a dry and sterile root canal environment, the nano zirconium dioxide serving as the biological inert ceramic is not degraded, and all filling materials of the AB component mixture are not degraded in the dry and sterile root canal environment, so that stable chemical root canal sealing is formed.
In combination with the titanium material root canal apex (the titanium material can be medical pure titanium or titanium alloy in particular), the round thread groove can skillfully bring the B-component composite bioceramic containing the calcium oxide component into the root canal filled with the A-component silicon/calcium phosphate hydration gel, and the chemical reaction process of the expansion of the composite bioceramic is rapidly and accurately carried and controlled in the root canal.
Specifically:
the root canal sealer composition can be divided into a basic dosage form and a bacteriostatic enhanced dosage form, and the two sealer compositions are composed of liquid and powder.
Basic dosage form:
the liquid agent is as follows: distilled water or chitosan oligosaccharide/distilled water (500 mg/L mass concentration) solution;
the powder is divided into powder of A component and powder of B component; wherein the component A comprises the following components in percentage by mass: 75-95% of tricalcium silicate and 5-25% of beta tricalcium phosphate; the component B comprises the following components in percentage by mass: 45% -55% of nano zirconium dioxide, 44.7% -52% of calcium hydroxide and 0.3% -3% of calcium oxide;
antibacterial enhancement type:
the liquid agent is as follows: distilled water or chitosan oligosaccharide/distilled water (500 mg/L mass concentration) solution;
the powder is divided into powder of A component and powder of B component; wherein the component A comprises the following components in percentage by mass: 75-95% of tricalcium silicate and 5-25% of beta tricalcium phosphate; the component B comprises the following components in percentage by mass: 45% of nano zirconium dioxide, 42% -44.7% of calcium hydroxide, 0.3% -3% of calcium oxide and 10% of iodoform;
the basic dosage form is suitable for most cases, and the antibacterial reinforced dosage form is suitable for a few root canal cases with chronic exudative inflammation and some intractable diseases.
Analysis of chemical composition of each bioceramic in the sealer:
1. tricalcium silicate:
tricalcium silicate has good bioactivity and capability of inducing and depositing bone-like hydroxyapatite, and has the function of promoting chemical bonding with soft/hard tissues. The tricalcium silicate reacts with water at normal temperature to generate hydrated calcium silicate gel (CSH) and calcium hydroxide. The CSH biological material has remarkable effects on stimulating the proliferation and differentiation of osteoblasts and the proliferation and differentiation of dental pulp stem cells into odontoblast-like cells, and silicon ions play an important role in promoting metabolism, collagen synthesis and mineralization of bone tissues, and are important factors for bone and blood vessel formation. The hydroxyapatite which is induced to be deposited can permeate into dentin tubules to form chemical bonding with dentin, so that the method has good root canal sealing performance.
In addition, calcium silicate hydration reaction also generates a small amount of calcium hydroxide, has a certain antibacterial effect, and beta tricalcium phosphate has no antibacterial property.
Wang Xiaohong, chang Jiang, sun Hongchen et al report in the academic paper of experimental study of tricalcium silicate occlusion of dentinal tubules that the CSH biomaterial self-curing process generates amorphous calcium-phosphorus ion occlusion of dentinal tubules of about 100nm-300nm on the dentinal surface and induces dentinal remineralization in physiological environment.
Fei Lisha, sun Jiao et al report in the academic paper of preliminary research on the in vitro osteogenesis effect of biological ceramics with different contents of calcium silicate that calcium silicate (GS) has remarkable capability of inducing bone cell proliferation and differentiation in vitro, and the osteogenesis effect is proportional to the content of CS and is obviously superior to beta tricalcium phosphate (beta-TCP).
Liu Yong et al report that by implanting animal models of alpha calcium silicate, beta calcium silicate and beta tricalcium phosphate into a white rabbit body in the paper of in vitro in vivo degradability study of alpha calcium silicate and beta calcium silicate, the action mechanism of the alpha calcium silicate, the beta calcium silicate and the beta tricalcium phosphate for degrading and stimulating osteoblast proliferation and differentiation in vivo is discussed in detail, and the osteogenic activity and the speed of the calcium silicate are demonstrated to be higher than those of the beta tricalcium phosphate.
2. Beta-tricalcium phosphate:
beta-tricalcium phosphate has good biodegradability, osteoinductive property and conductivity, biocompatibility and biosafety, and after the beta-tricalcium phosphate is implanted into a human body, degraded Ca ions and P ions can enter a living body circulatory system to form a basic substance of a new bone and induce the new bone to regenerate, and the single beta-tricalcium phosphate can also achieve bone-cementum-dentin osseous combination and achieve biological occlusion of root tips.
The beta-tricalcium phosphate curing process does not generate heat, and the combination of the beta-tricalcium phosphate and calcium silicate has positive effects on maintaining normal physiological environment balance of the root tip.
The solidification strength of the beta-tricalcium phosphate is lower than that of the solidified calcium silicate, and the combined use of the beta-tricalcium phosphate and the calcium silicate can reduce the strength of the root canal filling, thereby being beneficial to taking out the root canal filling for root canal re-treatment.
The degradation speed of the beta-tricalcium phosphate in a physiological environment area is smaller than that of calcium silicate, and for the area with larger absorption of root tip bone, the proliferation speed of bone cells is often not kept up with that of a calcium silicate material, and the combination of the calcium silicate and the beta-tricalcium phosphate can lead the degradation speed of the material to be closer to that of the bone cells.
The tricalcium silicate hydration reaction generates calcium silicate hydration gel and a small amount of calcium hydroxide, and the calcium hydroxide reacts with beta tricalcium phosphate to generate hydroxyapatite.
3. Nano zirconium dioxide:
the nano zirconium dioxide is an excellent biological inert material, has high strength and good chemical stability, does not react with other chemical components, does not cause hemolysis reaction, has no degradability or cytotoxicity, is in contact with bone cells, has no rejection reaction, has large specific surface area, strong oxygen storage capacity and relatively large density, has a radiation resistance effect on X rays, can be used as a developer, and is beneficial to radiographic inspection after root filling; reference may be made to the paper "influence of nanoscale zirconia toughened hydroxyapatite biocomposites ceramics on proliferation and differentiation of rabbit bone marrow stromal cells" (Tang Yuejun, wang Xinling, zhou Zhonghua, lv Chuntang).
4. Calcium hydroxide:
calcium hydroxide, namely slaked lime, is strongly alkaline, has a pH value as high as 12.5, can damage bacterial cell membranes, denatures bacterial proteins, breaks bacterial DNA chains caused by released hydroxide ions, kills bacteria, and can infiltrate into dentinal tubules for sterilization.
The calcium hydroxide can neutralize acidic substances generated in the inflammation process to eliminate lactic acid generated by osteoclasts, inhibit acid phosphatase, inhibit inflammatory absorption of root tips, prevent further destruction of hard tissues, and activate alkaline phosphatase to promote formation of hard tissues.
The calcium hydroxide has good biocompatibility, has no stimulation and toxicity to organisms and dental pulp tissues, can promote and induce the formation of dentin bridges, promote the closure of root tip holes and promote the repair of periapical bone tissues.
5. Calcium oxide:
calcium oxide, i.e. quicklime, has moisture absorption and reacts with water to form calcium hydroxide, and the volume expansion rate after hydration reaction is about 200%.
The calcium oxide in the component B of the embodiment only accounts for 0.3-3 percent, but can be quickly expanded by chemical reaction when meeting water and humidity, and the self-expansion characteristic of the biological ceramic sealing agent is endowed.
The concrete operation steps for performing two-layer filling of the root canal by using the titanium material root canal plug tip are as follows:
selecting a basic or antibacterial reinforced root canal sealer according to the indication of the suffering teeth, selecting a titanium root canal tip matched with the taper and length of the root canal to be filled, mixing and stirring a sealer A component and a liquid agent to form paste, scraping the paste into a thread groove of the root canal, introducing the paste into the root canal through the root canal tip, continuously and rapidly lifting and pressing for several times, repeating the actions for 1-2 times (hanging the paste again and introducing the root canal after withdrawing), completing the extrusion sealing of a root canal tip physiological environment area and the first layer of high-purity bioactive ceramic coating filling of the inner wall of the root canal under the action of a vertical component and a horizontal component of a cone of the root canal tip root canal, and then rotating and withdrawing in the reverse thread entering direction;
placing the root tube tip and the root tube section in a sealant B component dry powder for rotary rolling, so that the surface of residual paste in a thread groove is stuck with B component biological ceramic dry powder containing calcium oxide component, and at the moment, the titanium material root tube tip is like a medicament bracket capable of being shaped at will, and the surface is coated with expandable biological ceramic powder (the coating is as good as spraying hydroxyapatite biological ceramic on the surface of a titanium implant of a tooth, but the implant only needs to sinter the hydroxyapatite on the surface of the titanium material at high temperature, and the embodiment only needs to coat the biological ceramic in the thread groove of the titanium material root tube tip); rotating along the thread entering direction after the light rolling preliminary compaction and inserting into a preset position of a root canal; because the prepared root canal cavity and the root canal tip are conical, the B component biological ceramic powder in the thread groove of the root canal tip can be further compressed and compacted in the root canal cavity, and the calcium oxide in the B component powder in the thread groove of the root canal tip of the titanium material and the water in the A component paste in the root canal cavity are subjected to chemical expansion reaction by utilizing the principle that the calcium oxide can be rapidly expanded when meeting water, at the moment, the nanometer zirconium dioxide in the B component can also enter into micro gaps of the root canal cavity, lateral branch root canal and dentinal tubules in a small part under the extrusion of expansion force, so that the root canal filling of the secondary second layer biological ceramic is completed, and the second layer biological ceramic can further extrude the first layer of hydrated calcium silicate/calcium phosphate gel coated on the inner wall surface of the root canal cavity to the micro gaps of the physiological environment area of teeth and the adjacent physiological environment area, the dentinal tubules and the like.
In the root canal filling process, as the titanium material root canal plug tip has conductivity, the titanium material root canal plug tip can be directly and electrically connected with a dental root measuring instrument, the root canal length can be accurately measured while filling, the root canal and the film shooting are not required to be pre-measured in advance, the working length of the root canal plug tip is not required to be pre-set, the filling and the synchronous digital operation are carried out, and the ultra-accurate root canal filling is completed in a plurality of seconds;
finally, the root canal orifice, the dental crown cavity and the superfluous bioceramics in the thread groove of the dental crown section at the tip of the root canal plug are washed and dried, and photo-curing fluid resin is injected into the root canal orifice and the dental crown cavity for photo-curing or glass ion adhesive is naturally cured, so that one high-quality dental root canal treatment can be rapidly completed.
In the above examples, if common tools such as root canal enlarging needles, smooth probes, gutta percha points, etc. are used, it may be difficult to desirably fill and densify the dry powder of the B-component and the hydrated gel of the a-component to the apex region in proportion, uniformly, and rapidly before the chemical expansion reaction. The titanium material root canal plug tip can accurately convey and control the chemical reaction process of the composite bioceramic expansion in the root canal.
It should be understood that the above description of the zonal and layered sequential filling of material components using a titanium material root canal tip is only a preferred embodiment of the present application and is not intended to limit the scope of the present application.
Any combination of the technical features of the above embodiments may be performed (as long as there is no contradiction between the combination of the technical features), and for brevity of description, all possible combinations of the technical features of the above embodiments are not described; these examples, which are not explicitly written, should also be considered as being within the scope of the present description.
Claims (10)
1. The titanium material root canal plug tip is characterized by being of an integrated structure and comprising a root canal section and a dental crown section which are coaxially and sequentially arranged from bottom to top; the root pipe section is a cone, the surface of the root pipe section main body is provided with external threads, the surface of the area of the root pipe section, which is close to the dental crown section, is provided with a plurality of circles of horizontal blades which are respectively marked as a root pipe thread section and a root pipe horizontal blade section, and grooves of the root pipe thread section and the root pipe horizontal blade section are used for filling the prepared sealing agent; the dental crown section is a cylinder, a cuboid or a triangular prism, and the surface of the dental crown section is provided with a retention groove section.
2. The titanium material root canal tip of claim 1, wherein the taper of the solid axis of the root canal section is less than the taper of the outer profile of the root canal section.
3. The titanium material root canal tip according to claim 2, wherein a portion of the solid axis of the root canal section near the crown section narrows from top to bottom to form a frustum portion, and a finer taper is formed from below the frustum portion, wherein the taper of the taper is less than the taper of the frustum portion.
4. The titanium material root canal plug tip according to claim 2, wherein the outer contour taper of the root canal section is consistent with the 04 taper, 06 taper or 08 taper specification of the dental root canal preparation machine expanding needle, and the solid axis taper of the root canal section is 01 taper, 02 taper or 03 taper, respectively.
5. The titanium material root canal tip of claim 4, wherein for a titanium material root canal tip with a taper of the root canal section outer profile 04, 06, the root canal section outer profile maximum end diameter is equal to the crown section outer profile diameter; for the titanium material root canal tip with the taper of the outer profile 08 of the root canal section and above, the outer profile of the dental crown section is radially retracted relative to the outer profile of the root canal section, so that a shoulder is formed between the root canal section and the dental crown section.
6. The titanium material root canal tip according to claim 1, wherein said retention groove section takes the form of a thread or a horizontal blade or a horizontal annular groove.
7. The titanium material root canal tip of claim 1, wherein the thread form angle of the root canal thread section is no greater than 60 degrees.
8. A series of titanium material root canal plugs, comprising the titanium material root canal plug tip of claim 1 in a plurality of specifications, said specifications referring to specifications of a dental root canal preparation machine expansion needle, said plurality of specifications comprising specifications of a root canal section cone external profile taper being the same taper as dental root canal preparation machine expansion needle standard 04 taper, 06 taper and 08 taper, respectively.
9. The series of titanium material root canal plugs according to claim 8, wherein said plurality of gauges further comprises gauges for differentiating physical axial taper of the root canal section into at least 01 taper, 02 taper and 03 taper gauges.
10. The series of titanium material root canal plugs according to claim 8, wherein the plurality of specifications further comprises a specification of a stepwise variable taper of a solid axis of the root canal section, the stepwise variable taper being a 01 taper, a 02 taper and a 03 taper of the solid axis in order from bottom to top.
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