[On the issue of the need to press the matrix during restorations of the proximal surfaces of teeth].

Abstract

The aim the study: to make a comparative clinical analysis of the effectiveness of restoring the proximal surfaces of teeth using the active method as modified by the authors and the passive method without pressing the matrix.

Material and methods: The study consisted of 2 stages: preclinical and clinical. At the preclinical stage, a computer-mathematical simulation of matrix deformation was carried out depending on the pressing point in the AutoDesk SolidWorks 2019 software package. The clinical stage of the study involved 140 patients who were divided by block randomization with a block volume of 5 into 2 groups: control group (treatment passive method of restoring the contact point without pressing using a ring matrix system) and the study group (treatment with an active method with pressing along the anatomical landmarks of the teeth in combination with the use of a ring matrix system). Monitoring of the condition of the restoration, periodontium and tooth contact point was carried out after 6 months and after 18 months to assess long-term results.

Results: The results of the study demonstrated statistically significant differences (method used: Pearson Chi-square) between the control and study groups: for all studied parameters, the incidence of complications in the study group was lower than in the control group.

Conclusion: The results obtained during the study confirmed the need for anatomically correct compression of the matrix, even when using modern ring matrix systems, as well as the importance of periodic preventive examinations every 6 months to prevent the development of complications after treatment.