Abstract
The methods of aesthetic restoration of posterior teeth with composite materials currently used in practical dentistry make it possible to create only a point contact, which does not correspond to the age characteristics of the patients' teeth, therefore, it is important to develop methods for creation and positioning the contact areas, taking into account the age characteristics of structures of the teeth. A laboratory study of the effectiveness of the method of recreation of the age-related characteristics of the contact areas of the posterior teeth using the method of direct aesthetic restoration using light-cured composite materials with a specially developed tool – a contact-former was carried out. Phantom models were used to evaluate the significant characteristics of 40 restorations of posterior teeth with cavities of class 2 according to Black, performed in accordance with the traditional method, 80 restorations performed in accordance with the developed algorithm for restoring the contact points of posterior teeth by the method of direct composite restoration, taking into account age characteristics: 40 restorations with using a contact former with a working part of 1×2 mm (S = 2 mm2), 40 restorations - using a contact former with a working part of 1.5×3 mm (S = 4.5 mm2). It was found that the usage of the approved method of restoration of the contact points of posterior teeth using the method of direct composite restoration, taking into account age characteristics with the use of a contact-former in the process of tooth restoration, allows to obtain the required planar shape of the contact area (95.0±2.44%) to obtain its desired localization (90.0±3.35%), to form the functional configuration of interdental embrasures (86.7±3.79%) with a high degree of probability. There was a significant (p˂0.05) difference in indicators characterising the quality of positioning and restoration of the contact areas of the posterior teeth when using the tested technique in comparison with the traditional technique of restoration of teeth with carious defects of class 2 according to Black. The effectiveness of the tested method of direct restoration of the contact surfaces of the posterior teeth while taking into account age characteristics has been proved. The efficiency and ergonomics of the contact-former developed by us for this technique have been confirmed. It is concluded that it is advisable to study the effectiveness of the proposed technique in a clinical setting.
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