The method of restoration of the second class by G.V. Black

BACKGROUND: It is known that the carious process is one of the main causes of the destruction of the integrity of the hard tissues of the tooth, especially caries of the contact surfaces of the lateral teeth, which gives the most frequent complications and is difficult to treat. The question arises of finding a new method of filling cavities of class 2 according to G.V. Black. One of the ways to improve the quality of treatment is to add a reinforcing component to the restoration.

AIM: To develop a method of restoration of extensive defects of hard tissues of teeth of the second class according to G.V. Black with additional reinforcement, to study this method in an experiment.

MATERIALS AND METHODS: The removed teeth were dissected under the cavities of the 2^nd class according to G.V. Blank, the wall thickness was measured using a dental micrometer, the cavities were treated with a Single Bond Universal adhesive system, the samples were divided into 2 groups, the cavities were sealed according to the classical technique with 3M ESPE Filtek Ultimate Universal Restorative composite material and according to the developed method using a thread with composite material (dental fiber light-cured formed CATERPILLAR), after the restoration of the teeth they were subjected to metered pressure on a testing machine, a hardness tester, a trademark “Shimadzu”.

RESULTS: When conducting studies in samples of class 2 according to G.V. Black, where the tooth walls are more than 3 mm with the use of a thread with a composite, the compression force increased by 455.4 N. in comparison with the generally accepted method of filling with a composite, by 53%, respectively. In the group of class 2 according to G.V. Black, where the walls are less than 3 mm, sealed with a thread with a composite, the compression force increased by 660.21 N compared to the classical sealing technique, therefore, the quality of sealing increased by 105%.

CONCLUSION: The “Method of restoration of molars in case of significant destruction of the crown part of the tooth” has been developed (RF Patent No. 2783060). A method for restoring defects of the second class according to G.V. Black using a composite tape as a reinforcing component is proposed. During the experiment on the Shimadzu bursting machine, it was revealed that restorations performed using composite tape have better physical and mechanical properties than restorations performed exclusively with composite material.