THE EFFECTS OF DIFFERENT SURFACE APPLICATIONS ON PRIMARY TOOTH DENTINE CONTAMINATED WITH FERRIC SULFATE, ON THE MICROTENSILE BOND STRENGTH OF THE COMPOMER

Objective: effects of different surface applications on primary tooth dentine, contaminated with ferric sulfate used as a primary teeth pulpotomy agent, on μtbs of the compomers were compared. materials-methods: twenty-five caries-free primary second molars were used. the occlusal surfaces were prepared by cutting enamel and dentin perpendicular to the tooth axis 1 mm above the pulp horn. teeth were randomly divided into five groups. except the control groups g-1(phosphoric acid+futura bond+ glasiosite) the teeth were contaminated with ferric sulfate. other groups were formed as follows: g-2 (phosphoric acid+futura bond+glasiosite), g-3 (maleic acid+futura bond+glasiosite), g-4 (citric acid+futura bond+glasiosite) and g-5 (futura bond+glasiosite). teeth were sectioned as bar-shaped specimens and subjected to microtensile bond strength testing. μtbs data were analyzed by one-way anova and tukey hsd tests, and the frequency of fracture modes was compared using kruskal-wallis test. results: g-5 presented the minimum μtbs value, while g-3 presented the maximum. the difference between the groups was found statistically significant (p< 0.05). μtbs values were statistically sequenced as g-3=g-4=g-2>g-4=g-2=g-1>g-5. when fracture modes were compared, no statistically significant difference was found (p>0.05). conclusion: as a pulpotomy agent, ferric sulfate is recommended to be used with a combination of selfetching primers and different acid types.