CLINICAL EVALUATION OF DIRECT PHOTOCOMPOSITIONAL DENTAL RESTORATION IN DIFFERENT CONDITIONS OF LIGHT POLYMERIZATION OF ADHESIVE SYSTEM


Oleksandr Udod, Olena Borysenko

Photocomposite materials and adhesive systems are used for direct tooth restoration, among which 5th generation systems are most often used. To ensure curing, they are exposed to the light flux of the dental photopolymerizer, but the requirements and conditions of such exposure are insufficiently studied.

The aim – clinical evaluation of direct photocomposite restorations of teeth performed using an adhesive system, the curing of which was carried out in different light conditions.

Materials and methods. 185 people aged from 19 to 44 years were examined, in which 185 lateral teeth with carious cavities of the 1st class according to Black for medium and deep caries were restored by direct method from nanophotocomposite material. In patients of group 1 during the restoration of 62 teeth the polymerization of the adhesive system of the 5th generation was performed with a light flux of constant intensity 1500 mW/cm², in patients of group 2 were restored 60 teeth with polymerization of the same adhesive system with light flux by “soft start” with a final intensity of 1500 mW/cm², 63 teeth in persons of group 3 were restored with a gradual light effect of 1500 mW/cm² on the adhesive system at the bottom and each of the cavity walls using an additional device. The state of recovery was examined after 12 and 24 months.

Results. Within 12 months, the largest total number of disorders according to the clinical criteria “marginal adhesion”, “marginal staining”, “postoperative sensitivity” and “secondary caries” was found in patients of agroups 1 and 2, violations were found in 10 and 13 restorations, respectively (16.1±4.9 % and 21.7±5.8 % of the number of restorations in each group). In persons of group 3, disorders were identified in 3 restored teeth (4.8±2.6 %), which is statistically significant (p<0.05) better. After 24 months, statistically significant (p<0.05) the best indicators were again in patients of group 3, violations were found only in 4 restorations (6.7±3.2 % of them in this period). The worst was the state of recovery in persons of group 2, they had disorders in 20 restorations (42.6±10.4 %), in patients of group 1 – in 16 restorations (30.8±8.0 %).

Conclusions. Direct restoration of teeth from nanophotocomposite material, performed using the 5th generation adhesive system under the condition of its gradual polymerization at the bottom and each of the walls of the carious cavity of сlass 1 according to Black, showed high clinical efficiency, which in 12 and 24 months amounted to, respectively, 93.7±3.4 % and 88.9±3.5 %.

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How to cite paper:

Udod, O., & Borysenko, O. (2020). CLINICAL EVALUATION OF DIRECT PHOTOCOMPOSITIONAL DENTAL RESTORATION IN DIFFERENT CONDITIONS OF LIGHT POLYMERIZATION OF ADHESIVE SYSTEM. EUREKA: Health Sciences, (4), 18-24. https://doi.org/10.21303/2504-5679.2020.001331