RU2502494C1 - Method for occlusal surface recovery - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to dentistry, and is applicable for the recovery of the occlusal surface of grinding teeth. Prepared silicone pickup impressions are used to make a set of diagnostic and working models of upper and lower jaws to be plastered into an articulator adjusted individually with using a face bow and axiography findings. That is followed by wax-up of the teeth to be restored. Occlusal contacts are established considering the level of an occlusal cavity. The contacts are examined using articulation paper having a thickness of 8 mcm and master articulation foil of a thickness of 12 mcm. An optical impression is made by the prepared wax-up structure. A computer program is used to re-model a template, wherein a preparation border is determined at the level of a height of contour, while the teeth are described as objects required to prepare a crown. Further, the template is milled from transparent ash-free plastic. After the milling procedure, the template is cut in half and used as a press mould for making the restoration with a composite material polymerised with a lamp through the transparent surface of the template.

EFFECT: method enables accurate transmission of the modelled occlusal dental surface ensured by using the articulator adjusted individually with using the face bow and axiography findings, and the method of milling.

Description

The invention relates to medicine, in particular to dentistry, and can be used to restore occlusal surfaces of the chewing group of teeth.

One of the most important criteria for the successful and long-term functioning of chewing group tooth restorations with composite dental materials is the reproduction and formation of the occlusal surface, harmonious occlusal contacts of the relationship of the dentition.

In the prior art, plastic crowns for restoring a tooth stump Kuraray Core Buld-ups (Kurare, Japan), which are celluloid conical caps of 6 different sizes, into which composite material is inserted and squeezed by pressing it to the remaining tooth structures or the root pin, after which the material polymerized by a lamp

(http://www.dentway.ru/2007/05/10/koronki_plastikovye_dljavosstanovlenija_kult i_kuraray_core_buldups__kuraray_kurare_japonija.html).

Strip crowns (3M ESPE DENTAL, Germany) are known, which are removable celluloid caps produced in 16 different sizes of various shapes for the teeth of the upper and lower jaw. Composition material is introduced into the Strip crowns adapted for the restored tooth, after polymerization of which the crowns are removed (“Strip” crowns, or a long way to the aesthetics of the youngest. / Zaalov VN / http: //www.stom.ru/ vrachi / article / 57).

The disadvantages of this method is that these crowns have standard types of sizes and shapes and cannot reproduce and form an individual occlusal surface for harmonious occlusal contacts of the relationship of the dentition.

There is a method of restoring occlusal surfaces of a chewing group of teeth, including manufacturing a mouthguard from a celluloid plate onto a row of teeth obtained by pressing a model of the patient's jaw by vacuum in a vacuum apparatus after preparation of a problem tooth restored with dental wax using an automated T-Scan bite analysis system that meets the principles of modern gnatology, with the subsequent introduction of composite material into the mouthguard of its fixation on a number of teeth and polymerization (RF Patent No. 2402994 from 11/10/2010).

The problem to which the invention is directed is the accurate transfer of the occlusal surface of the restored teeth using the Wax-up system, which helps to normalize the violation of the occlusal relationship of teeth arising from their loss, pathological processes of the chewing apparatus, unsuccessful therapeutic and orthopedic treatment, as well as in the treatment of diseases periodontal, characterized by economic affordability, and ease of carrying out not requiring special professional skills.

The technical result of the invention is to accurately transmit the simulated occlusal surface of the teeth for its reproduction during restoration of the teeth.

The technical result of the invention is achieved due to the fact that the method of restoring the occlusal surface of the teeth is as follows, a set of diagnostic and working gypsum models of the upper and tender jaws is made using pre-obtained silicone prints, which are plastered into an articulator individually configured using the front arch and axiography data, then wax modeling of teeth in need of restoration is carried out, taking into account the level of the occlusal plane line up occlusal contacts, taking into account the concepts of sequential disocclusion and multiple point fissure-tubercular contact, the contacts are checked using articulation paper having a thickness of 8 microns and verification articulating foil 12 microns thick, stable occlusion is achieved, an optical impression is obtained from the obtained wax reconstruction, then a computer program produces modeling of the template, where the preparation margin is determined at the level of the equator of the tooth, and the teeth themselves are designated as objects on which It is necessary to make a crown, thereby the internal surface of the template coincides with the occlusal surface of the teeth modeled from wax, then the template is milled from transparent ashless plastic, after milling the template is cut in half and used as a mold in the manufacture of restorations with a composite material using a polymerisable lamp through the transparent surfaces of the template .

Using the milling method allows one to minimize the transfer of the shape of the occlusal surface of the teeth since the optical impression is made directly from the wax reconstruction of the teeth, and the use of the articulator, individually tuned using the facial arch and axiography data, at the stages of wax modeling allows you to simulate harmonious programmable occlusal relationships. The fact that the template is made of ash-free plastic allows polymerizing the composite material with a standard photopolymerization lamp.

The method of restoring the occlusal surface of the teeth is as follows:

1. get silicone prints, which make a set of diagnostic and working plaster models of the upper and tender jaw.

2. The resulting models are plastered into an articulator, individually tuned using the front arc and axiography data.

3. carry out wax modeling of teeth in need of restoration, taking into account the level of the occlusal plane, line up the occlusal contacts, taking into account the concepts of sequential disocclusion and multiple point fissure-tubercular contact

4. The contacts are verified using articulation paper having a thickness of 8 microns and a test articulating foil with a thickness of 12 microns, stable occlusion is achieved.

5. with the obtained wax reconstruction receive an optical impression

6. In a computer program, a template is simulated, where the preparation margin is determined at the level of the tooth equator, and the teeth themselves are designated as objects on which a crown is to be made.

7. The template is made of transparent ashless plastic.

8. The template is cut in half and used as a mold in the manufacture of restorations with a composite material using a polymerisable lamp through the transparent surfaces of the template.

Claims (1)

The method of restoring the occlusal surface of the teeth is as follows: a set of diagnostic and working gypsum models of the upper and lower jaw is made using pre-obtained silicone impressions, which are plastered into an articulator, individually configured using the facial arch and axiography data, then wax modeling of teeth in need of restoration is performed , taking into account the level of the occlusal plane, occlusal contacts are built, taking into account the concept of sequential dis occlusion and multiple point fissure-tubercle contact, contacts are checked using articulation paper having a thickness of 8 μm, and verification articulation foil 12 μm thick, stable occlusion is achieved, an optical impression is obtained from the obtained wax reconstruction, then a template is simulated in a computer program, where the preparation margin is determined at the level of the equator of the tooth, and the teeth themselves are designated as objects on which it is necessary to make a crown, thereby the inner surface of template coincides with the occlusal surface of the modeled wax tooth pattern further milled ashless of transparent plastic, after the milling pattern is cut in half and used as a mold in the manufacture of composite restorations, polymerizable lamp through the transparent surface of a mold.