Colour Changes of Acetal Resins (CAD-CAM) In Vivo

To quantify the discolouration of temporary acetal resins in vivo, based on weeks follow-up and salivary pH three thirds tooth. find out if final CIELAB coordinates can be predicted from initial colour coordinates, pH, situation (in thirds) follow-up. Colour (L, C, h) were recorded by spectrophotometry 13 participants fitted with hybrid provisional complete dentures made resin. recordings day placement after several (6 to 31 weeks). Salivary was also measured as a predictor variable for change. The ANOVA statistical test regression models have been used. highest difference according ∆Eab* 27.46 units 15 lowest 7.34 17 Neither cervical nor middle third any regressor (initial L*, C*, h*, follow-up) able significantly predict (p > 0.05). change used exceeds threshold clinical acceptability, it is not acceptable maintain satisfactory aesthetics. are capable satisfactorily predicting color resins.