Ardavan Etemadi1, Sima Shahabi2, Nasim Chiniforush1, Edris Pordel3, Zahra Azarbayejani3, Soolmaz Heidari2. 1. Laser Research Center of Dentistry (LRCD), Dental Research Institute, Tehran University of Medical Sciences, Tehran, Iran. 2. Dental biomaterials Department, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran. 3. School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
Abstract
INTRODUCTION: The aim of this study was to evaluate the composite surface treated by different powers of Erbium-Doped Yttrium Aluminum Garnet (Er:YAG) laser in comparison with bur preparation via scanning electron microscope. METHODS: Fourteen composite resin blocks with 15× 10 × 10 mm dimensions were used in this study. The samples were divided to seven groups as follow: Group 1 (power: 1 W, Energy: 50 mJ); Group 2 (power: 2 W, Energy: 100 mJ); Group 3 (power: 3W, Energy: 150 mJ); Group 4 (power: 4 W, Energy: 200 mJ); Group 5 (power: 5W, Energy: 250 mJ); Group 6 (power: 6 W, Energy: 300 mJ); Group 7: Diamond bur. Then, the samples were prepared for SEM examination. RESULTS: The surface treated by Er:YAG laser showed irregular and micro porous surface. CONCLUSION: It seems that composite surface treatment by Er:YAG laser can be an alternative method for composite repair if suitable parameters are used.
INTRODUCTION: The aim of this study was to evaluate the composite surface treated by different powers of Erbium-Doped Yttrium Aluminum Garnet (Er:YAG) laser in comparison with bur preparation via scanning electron microscope. METHODS: Fourteen composite resin blocks with 15× 10 × 10 mm dimensions were used in this study. The samples were divided to seven groups as follow: Group 1 (power: 1 W, Energy: 50 mJ); Group 2 (power: 2 W, Energy: 100 mJ); Group 3 (power: 3W, Energy: 150 mJ); Group 4 (power: 4 W, Energy: 200 mJ); Group 5 (power: 5W, Energy: 250 mJ); Group 6 (power: 6 W, Energy: 300 mJ); Group 7: Diamond bur. Then, the samples were prepared for SEM examination. RESULTS: The surface treated by Er:YAG laser showed irregular and micro porous surface. CONCLUSION: It seems that composite surface treatment by Er:YAG laser can be an alternative method for composite repair if suitable parameters are used.