Abstract
The aim of this experimental examination was to compare the values of shearing force, which breaks the connection between polymer bonding agents (XP Bond and Xeno III), used with restorative polymer Dyract Extra, and enamel, after and without enamel’s exposure to ozone. Ninety deciduous molars extracted for orthodontic reasons were used in the study. After cleaning the enamel surface, sixty samples were subjected to ozone treatment (among them thirty teeth were covered with a remineralisation agent releasing F–) (Fig. 1—3) and selected polymeric bonding agents were used according to the manufacturer’s instructions (Table 1). Prepared in this way, enamel was covered with Dyract Extra polymeric restorative material. The measured shearing force was calculated per contact surface of the material and enamel. As a result the value of adhesive strength was calculated for every sample. It was observed that ozonating the deciduous tooth’s enamel can significantly increase the adhesion of polymers to its surface, whereas the application of a remineralisation agent after the ozonating decreases the value of the adhesive strength (Table 2).
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