Journal of Conservative Dentistry
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Year : 2016  |  Volume : 19  |  Issue : 2  |  Page : 152-156

Influence of operating microscope in the sealing of cervical perforations

1 Department of Conservative Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
2 Department of Restorative Dentistry, Araraquara Dental School, UNESP - Paulista State University, Araraquara, Brazil
3 Department of Restorative Dentistry, Ribeirão Preto Dental School, USP - São Paulo University, Ribeirão Preto, São Paulo, Brazil

Correspondence Address:
Patricia Maria Poli Kopper
Faculty of Dentistry, Federal University of Rio Grande do Sul, Ramiro Barcelos St. 2492. Porto Alegre - 90035-003, Rio Grande do Sul
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0972-0707.178695

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Context: Accidental root canal perforations are among the main complications of endodontic treatment. Aim: This study evaluated the influence of operating microscope (OM) in the marginal adaptation of mineral trioxide aggregate (MTA) (Angelus® ) and glass ionomer (Vitremer) inserted into cervical perforations. Materials and Methods: Perforations were made in the cervical third of the buccal wall of the root canal in mandibular incisors. Next, the teeth were divided into four groups (N = 10): MG - MTA without OM; VG - Vitremer without OM; MOMG - MTA with OM; VOMG - Vitremer with OM. The perforations were sealed according to the group and the teeth were prepared for analysis by confocal laser scanning microscope. Images of perforation region (1,024Χ) were made and the gap presented by the materials was measured using the Image J program. LEXT OLS4100 three dimensional (3D) measuring laser microscope measured the volumetric misfit. Data of gap were analyzed by Kruskal-Wallis and Dunn's tests. Analysis of variance (ANOVA) and Tukey's tests compared the volumetric misfits. Results: The results showed lower volume and gap in the interface dentin/material in VOMG compared to the other groups (P < 0.05). Conclusion: The use of OM improved the quality of cervical perforations sealed with Vitremer, being indicated in clinical situations of iatrogenic cervical perforations.

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