Detalhes bibliográficos
| Ano de defesa: |
2017 |
| Autor(a) principal: |
Couto, Gabriela Soares
 |
| Orientador(a): |
Estrela, Carlos
|
| Banca de defesa: |
Estrela, Carlos,
Pécora, Jesus Djalma,
Decúrcio, Daniel Almeida |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal de Goiás
|
| Programa de Pós-Graduação: |
Programa de Pós-graduação em Ciências da Saúde (FM)
|
| Departamento: |
Faculdade de Medicina - FM (RG)
|
| País: |
Brasil
|
| Palavras-chave em Português: |
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| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
http://repositorio.bc.ufg.br/tede/handle/tede/12265
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Resumo: |
Aim: This study determined the apical foramen position in relation of root surfaces in human permanent teeth using cone beam computed tomography (CBCT) images. Methods: It was selected a sample of 1,400 teeth from CBCT scans of 422 patients (394 women; 44.46 mean age-years). AF position in relation of root surfaces was determined longitudinally on 0.1-mm/0.1-mm axial slices of CBCT images, from the pulp orifice to the root apex. The findings were recorded into categories: 1. buccal; 2. mesiobuccal; 3. mesial; 4. mesiolingual/palatal; 5. lingual/palatal; 6. distolingual/palatal; 7. distobuccal; 8.central. Analysis of the data used in the statistical classification. Categorical variables were described by frequency and percentage. A statistical analysis of the data was performed without the Microsoft Excel program for Windows 2013 (Redmond, Washington, USA).Results: The position of the apical foramen most frequently found in the lower central incisors was vestibular (35.48%), followed by the central position (30.64%). The distal position (31%) of the apical foramen was the second highest frequency seen in the maxillary lateral incisors. In the upper second premolars, the buccal and mesiobuccal root canal presented a higher frequency (27.51%) of the apical foramen in the central position, followed by the mesial position. In the second maxillary molar the greater foramen frequency in the central position was found in the mesiobuccal root (20.25%), and in the lower first molar, the mesiobuccal root was the one with the highest frequency (18.80%).Conclusions: AF position in human permanent teeth was central in 51.15% and 48.85% in maxillary and mandibular teeth, respectively. The CBCT and the strategies of longitudinal map-reading represent a dynamic and nondestructive method and improve to identify the AF position. |
