Objectives: The evaluation of the enamel and dentin cavity surface morphologies by Scanning Electron Microscopy (SEM) in Class II occlusogingival slot cavities which were prepared and etched by Er, Cr: YSGG (Erbium, Chromium: Yttrium, Scandium, Gallium, Garnet) laser and assessing their effects on the microleakage at composite resin restorations, and also comparing them with those of traditional methods.
Material and Methods: Fifty-five non-carious, sound extracted human molar teeth were divided into five groups: bur preparation + acid etching (Group I), bur preparation + laser etching (Group II), laser preparation + laser etching (Group III), laser preparation (Group IV), laser preparation + acid etching (Group V). The resin-tooth interface was evaluated based on microleakage. SEM examinations of laser irradiated samples (Groups II, III, IV, V) revealed a lack of smear layer, irregular and crater-like surface in enamel. Also, these examinations revealed opened dentinal tubules orifice, step-like flattered surface, and lack of smear layer in dentin.
Results: Statistically significant differences were found among the occlusal (p=0.003) and gingival regions microleakage (p=0.001) in groups. In Group V at the gingival, microleakage was significantly greater than the other groups (p<0.05). In Group II, the microleakage at the occlusal was found significantly greater than Groups I, IV, and V. When the microleakage at occlusal and gingival were compared among each group, only group V showed statistically significant difference (p<0.05).
Conclusions: According to the results of this study, it was determined that there is no need for the etching process after laser preparation.
Primary Language | English |
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Subjects | Restorative Dentistry |
Journal Section | Original Research Articles |
Authors | |
Publication Date | March 28, 2025 |
Submission Date | April 6, 2024 |
Acceptance Date | January 30, 2025 |
Published in Issue | Year 2025Volume: 28 Issue: 1 |
Cumhuriyet Dental Journal (Cumhuriyet Dent J, CDJ) is the official publication of Cumhuriyet University Faculty of Dentistry. CDJ is an international journal dedicated to the latest advancement of dentistry. The aim of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of dentistry. First issue of the Journal of Cumhuriyet University Faculty of Dentistry was published in 1998. In 2010, journal's name was changed as Cumhuriyet Dental Journal. Journal’s publication language is English.
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