Ángulos de convergencia en preparaciones dentarias realizadas en tipodontos por estudiantes de Odontología, Unach
Journal Title: Revista Eugenio Espejo - Year 2020, Vol 14, Issue 1
Abstract
This research aimed to analyze the angles of convergence in dental preparations for crowns performed on typodont, by 10th semester students of school of dentistry, UNACH. Dental preparations for crowns have retention and resistance characteristics, fundamental principles that offer success and longevity of the final crown. Various researchers worldwide have developed various methods to evaluate the convergence angles of extra coronary preparations; however, in our context, there are no studies on the measurement of these angles. This research was experimental, cross-sectional and observational, 32 dental preparations were obtained for fully covered crowns, each student had 60 minutes to carve two dental preparations in clinical simulators. The typodonts were scanned and digitized using the scanner CAD-CAM Ceramill Database version 1.0 - 2010 of “BrothersDent” Laboratory in order to produce three-dimensional images. The iTero software measured the vestibule-lingual (VL) and mesiodistal (MD) angles of each preparation. The smallest and largest angles observed were 3.1 ° and 102.5 ° for mandibular molars. The mean VL angle for anterior teeth was 40.38 ± 4.38 ° in males and 36.97 ± 3.95 ° in females, and the mean MD angle was 44.68 ± 5.51 ° in males and 40, 08 ± 3.99 ° in women. For posterior teeth the average VL was 27.46 ± 7.82° in men and 40.98 ± 4.63 ° in women; and the mean MD angle was 40.73 ± 5.95 ° in men and 50.62 ± 7.00 ° in women. In conclusion, the convergence angles achieved by students were greater than the recommended ideals according to Shillingburg.
Authors and Affiliations
Evelyn Verónica silva Consultorio de Especialidades Odontológicas MAXILAR PLUS, Ecuador http://orcid. org/0000-0003-3512-9464 Manuel Alejandro León Velastegui Universidad Nacional de Chimborazo, Ecuador http://orcid. org/0000-0002-6387-9337 David Israel Guerrero Vaca Universidad Nacional de Chimborazo, Ecuador http://orcid. org/0000-0002-4968-0831
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- EP ID EP694990
- DOI https://doi.org/10.37135/ee.04.08.09
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