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Quintessence Publishing: Journals: MICRO

 

MICRO: The International Journal of MicroDentistry

Edited by Bryan S. Pearson, DDS, MS

ISSN 2151-4143

Publication:
MICRO: The International Journal of MicroDentistry
Inaugural Issue 2009
Volume 1 , Issue 1

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Precision Treatment with the Dental Operating Microscope: ANALYSIS of Microleakage and Marginal Adaptation Using MTA CEMENT

Akira Mitsuhashi, DDS, PhD/Noriko Mutoh, DDS, PhD/ Tetsuya Hirata, DDS, PhD/Nobuyuki Tani-Ishii, DDS, PhD

Pages: 5660

Dental operating microscopes are considered to provide easier and more accurate endodontic treatment; however, evidence-based reports of this advantage are lacking. The purpose of this study was to compare mineral trioxide aggregate (MTA) root fillings carried out under three working conditions: with unaided vision, with loupes, and with the microscope. Cavities were prepared on eight extracted human teeth (columnar cavity, depth: 3 mm) using a water laser (Millennium, BioLase). MTA was filled into the root cavity under the three working conditions. All specimens were stored in distilled water for 1 week. The marginal adaptation of each specimen was observed and evaluated using confocal laser scanning microscopy (OLS1100, Olympus). The specimens were also subjected to a dye penetration test for 2 hours using 2% methylene blue to evaluate marginal leakage. The laser scanning microscopy evaluations revealed that fillings performed using the operating microscope showed better marginal adaptation than those performed with unaided vision or loupes. Regarding microleakage, the infiltration of the methylene blue decreased as the magnification increased, and the difference between groups was significant (P < .05). It was concluded that procedures performed with the operating microscope provided better results than those obtained with unaided vision or with dental loupes. Int J Microdent 2009;1:5660

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