Avaliação em tomografia computadorizada por feixe cônico da quantidade de tecido ósseo de suporte, vestibular e lingual, dos incisivos centrais inferiores e a relação com suas inclinações

• Ano de defesa: 2010
• Autor(a) principal: Marinho, Renata Bara
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Cidade de São Paulo; Brasil; Pós-Graduação; Programa de Pós-Graduação Mestrado em Odontologia; UNICID
• Palavras-chave em Português: Tomografia; Ortodontia; Periodontia; ODONTOLOGIA
• Link de acesso: https://repositorio.cruzeirodosul.edu.br/handle/123456789/1198

This study evaluated, using Cone Beam Computed Tomography (CBCT), the amount of buccal and lingual supporting bone tissue at the region of mandibular right and left central incisors and the relationship with their respective tipping. The study was conducted on CBCT images of adult patients aged 35 to 50 years, of both genders, not previously submitted to orthodontic treatment. The tipping of mandibular central incisors was evaluated (IMPA), as well as the quantity of buccal and lingual bone tissue at the region of these teeth, on the cervical (cervical buccal thickness/CBT and cervical lingual thickness/CLT), medium (medium buccal thickness /MBT and medium lingual thickness/MLT) and apical (apical buccal thickness/ABT and apical lingual thickness/ALT). The CBCT images were analyzed using the software Nemotec®. The association between the amount of bone tissue on the three thirds and the IMPA was statistically analyzed by the Pearson correlation and linear regression tests and the quantity of bone in the buccal and lingual aspects was compared by analysis of variance (p<0.05). The results revealed that the values of MLT (0,348; p= 0,019) and ALT (0,336; p= 0,024) for the mandibular left central incisor and MLT (0,375; p= 0,011) for the mandibular right central incisor were significantly increased with the increase in the IMPA, yet without a strong linear correlation. Also, though not statistically significant, the values demonstrated that the CBT is increased with the decrease in the IMPA, and the CLT is increased with the increase in the IMPA. On the buccal aspect, the mean quantity of bone was significantly greater on the apical region compared to the other two regions. On the lingual aspect, the mean quantity of bone was significantly greater on the apical region compared to the other two regions and the medium region was significantly greater compared to the cervical region.