Micro-CT evaluation of fit of CAD/CAM occlusal veneers with Er:YAG laser treatment on dentin

Qiushi Li; Zhou Qu; Xi Si M.D.; Meihua Li D.D.S.

doi:10.1117/12.2505193

12 December 2018 Micro-CT evaluation of fit of CAD/CAM occlusal veneers with Er:YAG laser treatment on dentin

Qiushi Li, Zhou Qu, Xi Si M.D., Meihua Li D.D.S.

Proceedings Volume 10844, Advanced Laser Technology and Applications; 108440L (2018) https://doi.org/10.1117/12.2505193
Event: International Symposium on Optoelectronic Technology and Application 2018, 2018, Beijing, China

Abstract

This study was aimed to demonstrate whether laser treatment on dentin is effective to improve the marginal and internal fit of CAD/CAM occlusal veneers, which is a conservative restoration for severe tooth defect from abrasion. Sixteen extracted molars were divided into 4 groups according to adopting laser treatment on dentin and milling materials (n=4): Lava Ultimate CAD/CAM Restorative with no laser treatment on dentin (group LU-C), Lava Ultimate CAD/CAM Restorative with laser treatment on dentin(group LU-L), IPS Empress CAD with no laser treatment on dentin(group IE-C) and IPS Empress CAD with laser treatment on dentin(group IE-L). After the restoration adhesion, all of specimens were scanned by micro-computed tomography(micro CT) to evaluate the marginal and internal fit of each specimen by artificial setting measuring points from both bucco-palatal and mesio-distal direction. For marginal fit, there was no statistical difference with or without laser treatment on dentin for either milling material. For internal fit, the situation was identical. Laser treatment on dentin would not affect the marginal or internal fit of CAD/CAM occlusal veneers, therefore, it may not be necessary for improving the fit of restorations.

Citation Download Citation

Qiushi Li, Zhou Qu, Xi Si M.D., and Meihua Li D.D.S. "Micro-CT evaluation of fit of CAD/CAM occlusal veneers with Er:YAG laser treatment on dentin", Proc. SPIE 10844, Advanced Laser Technology and Applications, 108440L (12 December 2018); https://doi.org/10.1117/12.2505193

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