CN101273920B - Needle for preparing neck and shoulder of tooth in complete coronal restoration process - Google Patents
Needle for preparing neck and shoulder of tooth in complete coronal restoration process Download PDFInfo
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- CN101273920B CN101273920B CN2008100442232A CN200810044223A CN101273920B CN 101273920 B CN101273920 B CN 101273920B CN 2008100442232 A CN2008100442232 A CN 2008100442232A CN 200810044223 A CN200810044223 A CN 200810044223A CN 101273920 B CN101273920 B CN 101273920B
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Abstract
The invention relates to a preparation method of a neck and a shoulder of a tooth during the tooth full crown repair process, the specific steps are that: a shoulder preparation special machine needle which is provided with a columnar base part, a columnar middle part and a spherical or short columnar top part with sands is adopted, the radius of the top part of the special machine needle is 1.2 to 1.4mm, the radius of the middle part is 0.3mm while the length is 8 to 10mm; the radius of the base part is 1mm while the length is 8 to 10mm; the base part of the special machine needle is arranged on a mobile phone to rotate the machine needle, the top part of the machine needle is arranged on a tooth tissue which is near to a gum and can move along the outline of the gum, the middle part of the machine needle is parallel or nearly parallel to the surface of the tooth, when the middle part of the machine needle is tightly affixed with the tooth surface, the shoulder with the depth of 0.9 to 1.1mm is formed at the edge of the tooth, thus completing the preparation of the tooth edge at the labial side/buccal side. The method can ensure the accurate preparation amount of the neck and theshoulder of the tooth during the full crown repair treatment process, the full crown and the tooth have great marginal adaptation, and the full crown has high strength and pleasing appearance after the repair, which is conductive to the oral health. The method further has simple operation and time conservation, which is not easy to damage the periodontal tissue during the preparation process.
Description
Technical field
The present invention relates to the preliminary special needle of dentistry complete crown repairing and treating dens in dente body.
Background technology
At present, in the Oral Repair therapeutic process, modal repair mode is preced with reparation exactly. and its repair process is: the tooth to patient's tooth or process root canal carries out tooth preparation earlier, promptly on the tooth body, be ground to shape and the size that is fit to put dummy, the golden porcelain of reuse manual manufacture or all-ceramic crown tightly are enclosed within on the tooth body after the preparation, and the form and the function of tooth body are repaired.Tooth preparation comprises the preparation of neck and shoulder (tooth body edge), cheek-tongue side body and proximal surface.Wherein the highest to the preparation requirement of neck and shoulder, concerning PFM, it is concave edge that the form of neck and shoulder often requires, and the most frequently used edge preparation amount is 1.0mm, and promptly the degree of depth of shoulder is 1.0mm.Tooth body edge is that the complete crown dummy contacts the zone with sealing with natural teeth, and patient's attractive in appearance and periodontal health is all played important effect.If tooth body edge preparation amount is too much, the shoulder degree of depth is much larger than 1.0mm, and residual tissue of tooth amount is very few, can cause tooth body intensity decreases.If tooth body edge preparation quantity not sufficient, the shoulder degree of depth is less than 1.0mm, then can cause: one, complete crown easily outwards forms in edge and overhangs, complete crown and tooth body adaptation are bad, and the cleaning that is unfavorable for tooth is easily piled up a large amount of bacterial plaques at tooth body edge, meeting of a specified duration forms dental calculus, antibacterial is in this accumulation and stimulate osseous tissue to absorb, thereby the disease that causes periodontal tissue causes the appearance of periodontal disease.Two, leave the thickness low LCL at complete crown edge for, then make its surperficial porcelain too thin to PFM, make the saturating metallochrome in hat edge, the attractive in appearance of back tooth repaired in influence.Therefore, for patient's periodontal health guarantees the attractive in appearance of the intensity of tooth and artificial tooth simultaneously, must carry out strict control to the preparation amount at tooth body edge.
Although in repair process the tooth preparation amount is had clear and definite requirement, the edge preparation of tooth body still often takes place in clinical and measure underproof example.This is because the car pin that tooth body edge preparation now commonly used is used is not quantitative accurately to the tissue of tooth of cutting, and the grinding depth at tooth body edge is entirely with doctor's perusal, thereby makes the error of tooth body edge preparation amount bigger; And for consideration attractive in appearance, often the edge with complete crown is placed under the gum, because blocking of gingiva wants preliminary tooth body edge not within doctor's field range, the doctor can only be with clinical experience, estimate its grinding thickness, more increased the error of tooth body edge preparation amount, caused a large amount of underproof edges preparation examples of clinical middle appearance, and make gingiva injured easily, further injure periodontal tissue, have a strong impact on patient's health and attractive in appearance.
Summary of the invention
Purpose of the present invention just provides a kind of pre-Preparation Method of tooth body hat repair process dens in dente body neck and shoulder, this method is guaranteed in the preparation amount at complete crown repairing and treating process dens in dente body edge accurate, good edge fitness is arranged between complete crown and tooth body, its intensity height, attractive in appearance helps oral health after the complete crown reparation.And this method is simple to operate, saves time, and is not easy to damage periodontal tissue in the preparation process.
The present invention realizes its goal of the invention, and the technical scheme that is adopted is, a kind of pre-Preparation Method of tooth body complete crown repair process dens in dente body shoulder, and its specific practice is:
It is cylindrical adopting base portion and middle part, the top is that the spheroid of sand or the shoulder preparation special needle of short cylinder are arranged, the radius at this special needle spheroid top is that the radius of 1.2-1.4mm or cylinder-shaped top is 1.2-1.4mm, length is 2.3-2.7mm, and the radius at middle part is that 0.3mm, length are 8-10mm; The radius of base portion is 1mm, and length is 8-10mm; The base portion of special needle is installed on the mobile phone, the car pin is rotated, car pin top places near the tooth body edge of gingiva and along gingival edge and moves, the body cervical region also moves along gingival contour, car pin middle part is parallel with the tooth surface or approaching parallel, when facing is close at car pin middle part, can form the degree of depth at tooth body edge is the shoulder of 0.9-1.1mm, finishes the preparation at lip side/cheek side tooth body edge.
Compared with prior art, the invention has the beneficial effects as follows:
Because the length that special needle middle part adds upper top for slick cylindrical and its length exceeds the length of tooth body, therefore, can make things convenient for the car pin parallel or be close to the tooth surface and move during use, its top is then in the edge grinding of tooth body; Be 1.2-1.4mm owing to the radius at sand top is arranged again, the radius 0.3mm at middle part, so top radius is greater than middle part radius 0.9-1.1mm.Make car pin top can also be merely able to form the depression of 0.9-1.1mm, thereby the preparation amount that can guarantee tooth body edge is 0.9-1.1mm at tooth body edge.Its tooth body edge preparation amount accurately and reliably, error is little, has avoided the excessive or too small phenomenon of tooth body edge preparation amount, thereby makes dummy reach good edge fitness, can guarantee that complete crown repairs the intensity of tooth, attractive in appearance and patient's oral health.Because this pre-Preparation Method can accurately be determined the position and the degree of depth of shoulder, complete crown neither can form in edge outstandingly protrudingly also can not approach saturating color because of the porcelain body insufficient space causes enamel coating not cross; Therefore can the edge of complete crown be placed under the gingiva for needs attractive in appearance, its edge need only be placed on concordant gum edge and get final product, avoid operating under gingiva, make gingiva injured, the protection gingiva prevents to damage periodontal tissue in the preparation process; The inventive method is simple to operate simultaneously, saves trouble, saves time.
Another object of the present invention provides a kind of special needle of realizing above method.The concrete structure of this special needle is: the top be radius be 1.2-1.4mm the sand spheroid is arranged or for radius is 1.2-1.4mm, length is the cylinder of 2.3-2.7mm; The middle part is the cylindrical of length 8-10mm, and the little 0.9-1.1mm of radius ratio top radius at middle part; Base portion is that radius is that 1mm, length are the cylinder of 10mm.
Length and its cylindrical shape at this car pin middle part, guaranteed in the preparation process at tooth body edge, car pin middle part can closely fit in the tooth surface, simultaneously since top radius than the big 0.9-1.1mm of middle part radius, just can promptly form the neck and shoulder of tooth body in the spill that 0.9-1.1mm accurately prepares out in tooth body edge, realize the accurate preparation at tooth body edge.
The present invention is described in further detail below in conjunction with accompanying drawing and concrete embodiment.
Description of drawings
Fig. 1 is the structural representation of the used spherical top car pin of the embodiment of the invention one.
Fig. 2 is the operation chart of the embodiment of the invention one.
Fig. 3 is the structural representation of the used cylinder-shaped top car pin of the embodiment of the invention two.
The specific embodiment
Embodiment one
Fig. 1,2 illustrates, a kind of specific embodiment of the present invention:
The pre-Preparation Method at a kind of tooth body hat repair process dens in dente body edge, its specific practice is:
Adopt base portion 3, middle part 2, the top 1 common shoulder preparation special needle of forming, the base portion 3 of this special needle is thick cylinder, middle part 2 is thin cylinder, top 1 is for there being the spheroid of sand, it specifically is of a size of: the radius at top 1 is 1.2-1.4mm, and the radius at middle part 2 is that 0.3mm, length are 8mm.The radius of base portion 3 is 1mm, and length is 8-10mm; This special needle base portion 3 is installed on the mobile phone, operating handset makes the rotation of car pin again, and 1 at car pin top places near moving on the tissue of tooth of gingiva and along gingival contour.When beginning to operate, car pin middle part is parallel with tooth body 4 surfaces or the middle part is approaching parallel to the oral cavity inner inclination, and edge 4a carries out grinding at the tooth body, and along with the carrying out of car pin top 1 grinding, tooth body 4 surfaces are pressed close at car pin middle part 2 gradually.At last, when facing was close at car pin middle part 2, can form depth capacity at tooth body edge 4a was the shoulder of 0.9-1.1mm accurately, finishes the preparation at tooth body edge.The shoulder that this example is prepared is the spill shoulder.
Embodiment two
Fig. 3 illustrates, and this example and embodiment one are basic identical, and different only is: the top 1 of the special needle of employing is 1.2-1.4mm for radius, length be 2.3-2.7mm the sand cylinder arranged, but not spheroid.The shoulder that this example is prepared is 90 degree right angle shoulders.
Obviously, utilize method of the present invention can make the shoulder and the lateral shoulder of tongue of lip side (the external face of tooth).The inventive method is the most important step in the tooth preparation process in the complete crown tooth repair process, and after the preparation of finishing shoulder, the tooth preparation car pin of further using the top instead and do not have sand is cut the preparation in the middle part of end and the tooth body.Because shoulder has the fixed degree of depth, thereby can help the guide car pin to carry out the preparation at tooth body middle part, make it obtain more accurate tooth preparation amount.The car pin of using top band sand again instead carries out the preparation of proximal surface, along established shoulder, selects for use the car pin of appropriate size to carry out the tooth preparation of side (proximal surface).And polish at ready shoulder with the polishing car, promptly finish whole preparation works of the tooth body of complete crown tooth in repairing.
When implementing, the selection of 90 degree right angle shoulders or spill shoulder decides according to the kind of the complete crown dummy that the patient selects.
Claims (1)
1. preliminary special needle of tooth body complete crown repair process dens in dente body neck and shoulder is characterized in that: top (1) for radius be 1.2-1.4mm the sand spheroid is arranged or for radius is 1.2-1.4mm, length is the cylinder of 2.3-2.7mm; Middle part (2) is the cylindrical of length 8-10mm, and the little 0.9-1.1mm of radius ratio top radius at middle part; Base portion (3) is that radius is that 1mm, length are the cylinder of 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100442232A CN101273920B (en) | 2008-04-16 | 2008-04-16 | Needle for preparing neck and shoulder of tooth in complete coronal restoration process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100442232A CN101273920B (en) | 2008-04-16 | 2008-04-16 | Needle for preparing neck and shoulder of tooth in complete coronal restoration process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101273920A CN101273920A (en) | 2008-10-01 |
| CN101273920B true CN101273920B (en) | 2010-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100442232A Expired - Fee Related CN101273920B (en) | 2008-04-16 | 2008-04-16 | Needle for preparing neck and shoulder of tooth in complete coronal restoration process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101273920B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105411720B (en) * | 2016-01-05 | 2021-08-17 | 金艺鹏 | Method for manufacturing canine dental crown |
| CN108618858B (en) * | 2017-07-26 | 2021-02-12 | 北京大学口腔医学院 | Manufacturing method of tooth preparation guide plate and detachable needle limiter in functional area |
| CN111166507B (en) * | 2018-11-09 | 2022-04-22 | 北京大学口腔医学院 | Personalized tooth preparation step-by-step indication guide plate designed and manufactured in digital mode |
| CN112451135B (en) * | 2020-11-12 | 2021-12-17 | 北京联袂义齿技术有限公司 | Processing method of pure titanium personalized abutment |
| CN113520629A (en) * | 2021-08-31 | 2021-10-22 | 青岛市口腔医院 | Preparation method of neck and shoulder of tooth in full crown restoration process of tooth and special machine needle thereof |
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2008
- 2008-04-16 CN CN2008100442232A patent/CN101273920B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101273920A (en) | 2008-10-01 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20140416 |