Análise tridimencional da configuração radicular apical de dentes anteriores superiores
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2019-10-31
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Universidade Federal de Goiás
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This study analyzed the apical root configuration of maxillary anterior teeth using Cone-Beam Computed Tomography (CBCT) images in a Subpopulation of the Brazilian central region. A sample of 400 maxillary anterior teeth from 167 patients (101 women; mean age 41.8 years) from January 2012 to April 2017 was analyzed. The CBCT images used in this study were from a private dental radiology clinical database. The apical root configuration of the maxillary anterior incisors was verified by navigating 0.1 mm / 0.1 mm, in the three planes, axial, coronal and sagittal sections on CBCT images, from the root canal entrance to the apical foramen as well as from the apical direction to the crown. The standard reference for apical root shape configuration corresponded to the long axis of the tooth and when necessary, CBCT images were oriented to correct Parallax error. The determination of the root configuration of teeth and their frequency were characterized according to the classification of abnormalities in root morphology proposed by Levander & Malmgren, recorded in four categories: 1. short root; 2. blunt root; 3. root with apical bend (lacerated root); 4. pipette-shaped root. The frequency and percentage of qualitative variables were obtained and analyzed by the chi-square test. The level of significance was 5%. The most common apical root form presented in the central incisors was blunt root, followed by pipette-shaped root, lacerated root and, less frequently, blunt root. In the lateral incisors, the highest frequency presented was lacerated root, followed by blunt root, pipette-shaped root and, less frequently, short root.
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BERNARDES, C. M. R. Análise tridimencional da configuração radicular apical de dentes anteriores superiores. 2019. 56 f. Tese (Doutorado Ciências da Saúde) - Universidade Federal de Goiás, Goiânia, 2019.