KR101287812B1 - ceramic primary tooth crown and capping structure and method between the same and front primary tooth of upper jaw - Google Patents

Abstract

The present invention is characterized in that a through hole is formed in the lingual side surface of a ceramic bare tube for a maxillary premolar tooth to be matched with a mandibular molar tooth and a resin cement is interposed between a ceramic bare tube for a maxillary premolar tooth formed with the through hole and a maxillary premolar tooth Wherein a thickness of the first resin male part protruding through the through-hole through the resin cement is equal to a thickness of a portion of the ceramic bare tube defining the through hole, The tip of the mandibular incisor strikes against the first resin male part so that the hardness and brittleness of the ceramic bead tube is larger than that of the metal and the elasticity is smaller than that of the metal, When the normal mandibular incisors matching the incisor tube are not repeatedly abraded by the above-mentioned ceramic incisors with high hardness, It is possible to provide an effect of remarkably lowering the risk of fracture of the ceramic greenhouse tube which is a brittle material and also to make the ceramic greenhouse tube and the resin cement join together through the through hole, It is possible to stably provide an action effect of coupling the ceramic bare tube and the maxillary incisor without generating the stress.

Description

[TECHNICAL FIELD] The present invention relates to a ceramic primary tooth crown and capping structure and method between the same and a primary primary tooth of an upper jaw,

More particularly, the present invention relates to a structure and method for joining a child's prosthetic tube and a prechallenge using a raw material such as zirconia or alumina having high strength and toughness, The present invention also relates to a structure and a method for coupling between the above-described inner tube and the above-described inner tube.

Pediatric denture restoration (denture restoration) is a procedure that restores the dental crown of a denture that is severely damaged by dental caries or trauma.

If the crown of the injured tooth is not cured by restoration in time, the crown is pushed to the place where the surrounding teeth are missing, and the permanent tooth that can not come out later can not come out. Therefore, the restoration that retains the crown until the permanent tooth comes out, Cover it.

However, even if the tube is covered with a damaged crown, it can not maintain its shape until the permanent teeth are formed. When the resin cement is used as the resin cement, The present invention has a problem in that it can not satisfy the esthetics because it does not coincide with the color of teeth even though the restoration form can be maintained for a long time.

As the economic power is improved, the number of adult implants is rapidly increasing and interest in esthetic improvement is increasing. Demand is expected to increase due to satisfaction with the level of prosthodontic treatment and expansion of desire for expectation.

For the tube restoration, it is necessary to develop a ceramic tube with higher strength, higher esthetics and higher biocompatibility than general metal and resin cement types. However, to date, a satisfactory level of ceramic tube has not been commercialized.

Typical ceramics are produced through a powder press-forming process, which causes a pressure imbalance during molding, resulting in defects, and additional precise processing steps are required, resulting in excessive fabrication costs.

The present applicant has disclosed a method of manufacturing a ceramic greenhouse tube capable of solving such a problem in Patent Registration No. 10-1071554.

The ceramic greenhouse tube disclosed in the above publication can be prepared by mixing raw materials including zirconia or alumina constituting the skeleton of the intake pipe, a polymer for imparting softness by lowering the viscosity during injection molding, and a colorant for imparting the same or similar color as the greenhouse A step of heating the polymer contained in the mixed raw material so as to have ductility; injection molding the heated raw material; a polymer extracting step of weakening the embrittlement and making ductility of the injection molded article; Degreasing to completely remove the polymer component from the extruded product in which a part of the polymer is extracted by extraction, sintering the degreased body from which the polymer has been removed to improve mechanical properties, polishing the outer surface of the sintered body to impart luster A barrel processing step to remove burrs ≪ / RTI >

The ceramic indwelling tube manufactured by this method still has a hardness and brittleness greater than that of the metal and has a small elasticity, and the normal mandibular molar that coincides with the ceramic indwelling tube covered with the maxillary incisor There is a risk of fracture of the ceramic greenhouse tube due to repetitive collision of the surface of the ceramic mandrel with the surface of the normal mandibular molten tooth, and furthermore, there is a risk of fracture of the ceramic greenhouse tube through the resin cement, Even if the ceramic inlet tube is covered with the front inlet, the ceramic inlet tube is small in elasticity, so that even if the female type ceramic inlet tube is made into a forced and male-like shape capable of being hung on the male crown of the pre-uppermost inlet, When the ceramic tube is inserted into the maxillary incisor, the ceramic tube is broken, Lt; / RTI >

The present invention has a problem in solving the above-mentioned problems.

The present invention is characterized in that a through hole is formed in the lingual side surface of a ceramic bare tube for a maxillary premolar tooth to be matched with a mandibular molar tooth and a resin cement is interposed between a ceramic bare tube for a maxillary premolar tooth formed with the through hole and a maxillary premolar tooth The above problem can be solved by making the thickness of the first resin male part protruding through the through-hole through the resin cement equal to the thickness of the portion of the ceramic tube forming the through-hole.

Further, the present invention provides, in addition to the above-mentioned object, a cut-out portion formed on at least one side portion of both base portions of the ceramic preform for a pre- By making the thickness equal to the thickness of the portion of the ceramic tube that forms the notch, the above problem can be more reliably solved.

In addition, the present invention is preferable from the viewpoint that a ceramic bare tube can be easily inserted into the maxillary premolars by providing a handle protruding in the mandibular incisor direction coinciding with the tip of the ceramic bare tube for maxillofacial attracting.

According to the present invention, the tip of the mandibular incisor strikes the first resin male part repeatedly while the undersurface of the mandibular incisor and the frontal surface of the ceramic bobbin for induction of the maxillary incisor repeatedly bump against each other, Even if the tube has greater hardness and brittleness and less elasticity than the metal, the normal mandibular incisors coinciding with the covered maxillary incisor ceramic incisors are prevented from being worn repeatedly by the collision with the harder incisors, It is possible to provide an effect of significantly reducing the risk of fracture of the ceramic greenhouse tube.

Further, according to the present invention, it is possible by the above-mentioned object of the present invention to make the ceramic greenhouse tube and the resin male part mutually male and female coupling through the through hole and the cutout part so that the ceramic greenhouse tube can be stably It is possible to provide an action effect of coupling the ceramic bare tube with the maxillary incisor.

Further, according to the present invention, the present invention enables the operator to grip the handle and to bind the ceramic greenhouse to the maxillary premolars, thereby providing an action effect for facilitating the vitrification repair procedure have.

1 is a front view and a side view of a ceramic greenhouse tube according to an embodiment of the present invention,
FIG. 2 is a side view showing a state where resin cement is filled in the ceramic green tube of FIG. 1;
Fig. 3 is a front view showing a state immediately before the ceramic greenhouse tube of Fig. 1 is disposed between the maxillary premolar tooth and the mandibular molar tooth and inserted into the maxillary premolars, and Fig.
FIG. 4 is a side view showing a state in which the ceramic greenhouse tube of FIG. 1 is fitted in the maxillary premolar tooth. FIG.

Hereinafter, embodiments according to the present invention will be described with reference to FIGS. 1 to 4 attached hereto.

In Fig. 1, the ceramic greenhouse tube of this embodiment is indicated by reference numeral 100. Fig. The ceramic green pipe 100 is formed by injection molding using zirconia or alumina as a main component.

As shown in FIGS. 1 and 3, the corrugated portion 3 of the crown 2 of the maxillary incisor 1 is removed through machining and then removed from the base 100a of the ceramic greenhouse 100. And a concave portion 101 having a size and a shape that can be fitted to the exposed outer portion of the formed maxillary incisor.

The ceramic greenhouse 100 has an outer shape part 102 having a size and a shape that can be matched with a mandrel preform 4 conforming to the maxillary front teeth 1.

As shown in FIG. 4, when the tongue 130 is aligned with the mandrel prism 4, the tip 103 of the ceramic mandrel 100 facing the tongue 130 has the tip of the mandrel prism 4, And a through hole 105 is formed in the contact portion.

A notch 106 is formed in the widthwise side portions 104 of the base portion 100a of the ceramic greenhouse 100 so that the front end 100b of the ceramic greenhouse 100 has a concave The grip portion 107 protruding in the direction of the inlet 4 may be formed.

The recessed portion 101 is filled with the gel-like resin cement 110 so that the recessed portion 101 is fitted and fixed to the uppermost molten tooth 1 from which the rotten portion 3 is removed.

Next, the ceramic greenhouse tube 100 filled with the resin cement 110 is pinched by the operator gripping the handle 107, so that the recessed portion 101 is separated from the recessed portion 3, (Capping) the outer surface of the upper housing 1 to be fitted with the upper housing 1.

At this time, the gel-like resin cement 110 is pushed out of the ceramic green pipe 100 through the through hole 105 and the notch 106.

When the gel cement 110 is solidified, the ceramic greenhouse 100 is adhered and fixed to the maxillary incisor 1 when a predetermined time elapses from the fitting state.

In this state, the first and second excess resin portions 111 and 112 of the resin cement 110 protruding out of the ceramic green pipe 100 through the through hole 105 and the cutout portion 106 and solidified, 112 occupies a space defined by the ceramic inlet tube portion defining the through hole 105 and a space defined by the ceramic greenhouse tube portion defining the cutout portion 106 And protrudes outwardly from the outer peripheral portion 102 of the ceramic body.

The tip ends of the first and second excess resin portions 111 and 112 which are stepped with respect to the surface of the outer shape portion 102 of the ceramic green pipe 1 are removed by machining to form the outer shape portion 102, As shown in Fig. That is, the thickness of the excess first and second excess resin portions 111 and 112 is determined by the thickness of the ceramic trenched tube portion defining the through hole 105 and the thickness of the ceramic trenched portion 106 forming the cut- The excess first and second excess resin portions 111 and 112 become the first and second resin male portions 111a and 112a in the same manner as the thickness of the tube 100 portion.

Therefore, when the ceramic greenhouse tube is pulled in the direction of departing from the maxillary front teeth 1, the first and second resin male portions 111a and 112a are stepped on the outer wall defining the through-hole and the cut- So as to prevent the deviation of the ceramic greenhouse tube from the maxillary incisor 1.

One; Maxillary incisor, 2; Crown, 3; Rotten part, 4; Mandibular incisor, 100; Ceramic inlet pipe, 105; Through hole, 106; Notched portion, 107; Handle portion, 110; Resin cement, 130; tongue

Claims (6)

The concave portion 101 having a size and a shape capable of being fitted to the exposed outer portion of the maxillary incisor tooth 1 from which the rotten portion 3 of the crown 2 of the maxillary incisor tooth 1 has been removed Is provided in the base 100a,
And a contour portion (102) having a size and a shape that can be matched with a mandibular incisor (4) conforming to the maxillary incisor tooth (1)
A through hole 105 is formed in the lug side 103 of the ceramic green tube 100 facing the tongue as a portion where the tip of the mandibular molten tooth 4 contacts with the mandrel pre-existing tooth 4, Is formed on a surface of the ceramic substrate (1). The method according to claim 1,
Wherein cutouts (106) are formed in both widthwise side portions (104) of the base portion (100a) of the ceramic greenhouse tube (100). 3. The method of claim 2,
Wherein a handle portion (107) protruding in the direction of the mandrel front inlet (4) aligned with the front end (100b) of the ceramic greenhouse tube (100) is formed. A structure for bonding a ceramic greenhouse tube according to any one of claims 1 to 3 to a pre-
In the ceramic greenhouse 100,
Is fixed to the maxillary front teeth (1) by abutting against the outer surface of the maxillary front teeth (1) via the resin cement (110) and the recess (101)
The resin cement 110 includes a first resin male portion 111a occupying a space in the through hole 105,
Wherein a thickness of the first resin male portion (111a) is equal to a thickness of a portion of the ceramic tube portion defining the through hole. 5. The method of claim 4,
The resin cement 110 further includes a second resin male part 112a occupying a space in the notch 106,
Wherein a thickness of the second resin protrusion (112a) is equal to a thickness of a portion of the ceramic bare tube defining the cut-out portion. A method for bonding a ceramic greenhouse tube according to any one of claims 1 to 3 to a pre-
In the recess 101 of the ceramic green pipe 100,
The recessed portion 101 is filled with the resin cement 110 in a gel state in order to be fitted and fixed to the upper incisor 1 from which the rotten portion 3 is removed,
The recessed portion 101 of the ceramic greenhouse tube 100 filled with the resin cement 110 is pressed while covering the outer surface of the maxillary incisor tooth 1 from which the rotten portion 3 has been removed, 1) and fitted as to be aligned, and out resin cement 110 of the gel it is sticking out to the outside of the ceramic attracting tube 100 through the through hole 105,
When the gel cement 110 is solidified, the ceramic greenhouse tube 100 is adhered and fixed to the maxillary incisor 1 when a predetermined time elapses from the fitting state,
The first excess resin portion 111 of the resin cement 110 which protrudes out of the ceramic greenhouse 100 through the through hole 105 and solidifies is formed in the ceramic main body 110, And is projected out of the outer peripheral portion 102 of the ceramic holding body while occupying a space defined by the tube portion,
The tip of the first excess resin portion 111 which is stepped with respect to the surface of the outer shape portion 102 of the ceramic green pipe 1 is removed and becomes a continuous surface with respect to the surface of the outer shape portion 102 A method of bonding between a ceramic tube and a maxillary incisor.

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