Avaliação tomográfica dos fatores associados a fratura radicular
Nenhuma Miniatura disponível
Data
2019-02-20
Autores
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal de Goiás
Resumo
The diagnosis of root fracture (RF) comes as a challenge due to the scarcity of
pathognomonic signs and symptoms. RF presents multifactorial etiology and knowing
these factors is essential for the early diagnosis and, mainly, for its prevention. The
aim of this study was to evaluate factors associated to root fracture in endodontically
treated teeth using a cone beam computed tomography (CBCT) image database. The
sample was composed of 81 fractured teeth exams (case) and 81 non-fractured teeth
exams (control), paired by age, sex and teeth. Dentine thickness, bone thickness,
bone volume, presence of a post, absence of adjacent teeth and presence of adjacent
implants were analyzed. Dentine thickness and bone thickness were evaluated using
the measurement tool present in the CS 3D Imaging software. Bone volume was
calculated using the ITK-SNAP manual segmentation software. The Student’s t-test
and the Mann-Whitney test were used to compare the quantitative variables and the
chi-squared test was used for the qualitative variables. The odds ratio was calculated
to evaluate the association between the variables analyzed and the presence of root
fracture. Logistic regression was used to evaluate the factors that were significant in
the bivariate analysis. The dentine thickness of the fractured teeth was significantly
smaller in comparison with the non-fractured teeth (p<0.05). The fractured teeth had
an average dentine thickness of 1.3 mm while the non-fractured teeth had an
average of 1.5 mm. There was no statistically significant difference between the
averages of thickness and bone volume between the groups. Considering the dentine
thickness of ≤1.3 mm as a risk factor, the odds ratio value was 3.66 (CI 1.811-
7.422). The odds ratio value for presence of post was 1.47 (CI 0.72-3.00). It is
concluded that dentine thickness has influence on the development of root fractures,
whereas thicknesses ≤1.3 mm are associated with a higher risk of RF. Presence of a
post is related to smaller dentine thickness, however it was not considered to be a
factor associated with RF. Presence of implant, absence of adjacent tooth and
alveolar bone support were not significant in the development of RF.
Descrição
Citação
SILVA, L. R. Avaliação tomográfica dos fatores associados a fratura radicular. 2019. 65 f. Dissertação (Mestrado em Odontologia) - Universidade Federal de Goiás, Goiânia, 2019.