:: Volume 35, Number 2 (Spring 6-2017 2017) ::
J Dent Sch GYEAR__, 35(2): 85-96 Back to browse issues page
Microleakage of cervical cavities prepared by an Er:YAG laser or a high-speed handpiece, after restoration using resin composite
Alireza Daneshkazemi, Alireza Daneshkazemi, Zahra Bahrololoomi, Zahra Bahrololoomi, Abdolrahim Davari, Abdolrahim Davari *, Arash Omidi, Arash Omidi, Pedram Daneshkazemi, Pedram Daneshkazemi
Professor, Dept. of Operative Dentistry, Member of Social Determinants of Oral Health Research Center, Dental School, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
Abstract:   (102 Views)
Objectives: The purpose of this in vitro study was to evaluate the microleakage of cervical cavities prepared by Er:YAG laser or high-speed hand piece and bur.
Methods: This in vitro experimental study was performed on 40 sound permanent third molar teeth randomly assigned into two equal groups (n=20). In the first group, high-speed hand piece and bur and in the second group Er:YAG laser was used to prepare class V cavities on the buccal or lingual surfaces. Filtek Z250 composite resin was used as the restorative material. The teeth were thermocycled for 1000 cycles, placed in 2% methylene blue solution for 24 hours, sectioned at the center of restoration and evaluated under a stereomicroscope at x40 magnification for microleakage. Data were analyzed using Mann-Whitney U test at 0.05 level of significance.
Results: There was no significant difference between the occlusal or gingival margin microleakage of cavities prepared with Er:YAG laser and high-speed hand piece (P=0.445 and P=0.758, respectively). However, the difference in the occlusal and gingival margins was significant within the high-speed hand piece (P=0.042) and Er:YAG laser ( P=0.002) groups.
Conclusion: Cavity preparation by Er:YAG laser and high speed hand piece and bur is not significantly different in terms of microleakage.
Keywords: Lasers, Solid-State, Dental High-Speed Technique, Dental Leakage, Composite Resins
Type of Study: Original Article | Subject: Special
Received: 2017/08/15 | Accepted: 2017/08/15 | Published: 2017/08/15

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Volume 35, Number 2 (Spring 6-2017 2017) Back to browse issues page