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Accuracy of cone-beam computed tomography in measuring the thickness of radicular dentin
Bunn, Daiana Lopes; Corrêa, Márcio; Dutra, Kamile Leonardi; Schimdt, Tamer Ferreira; Teixeira, Cleonice da Silveira; Garcia, Lucas da Fonseca Roberti; Bortoluzzi, Eduardo Antunes.
  • Bunn, Daiana Lopes; Universidade Federal de Santa Catarina. Department of Dentistry, Endodontics Division, Health Sciences Center. Florianópolis. BR
  • Corrêa, Márcio; Universidade Federal de Santa Catarina. Department of Dentistry, Endodontics Division, Health Sciences Center. Florianópolis. BR
  • Dutra, Kamile Leonardi; Universidade Federal de Santa Catarina. Department of Dentistry, Endodontics Division, Health Sciences Center. Florianópolis. BR
  • Schimdt, Tamer Ferreira; Universidade Federal de Santa Catarina. Department of Dentistry, Endodontics Division, Health Sciences Center. Florianópolis. BR
  • Teixeira, Cleonice da Silveira; Universidade Federal de Santa Catarina. Department of Dentistry, Endodontics Division, Health Sciences Center. Florianópolis. BR
  • Garcia, Lucas da Fonseca Roberti; Universidade Federal de Santa Catarina. Department of Dentistry, Endodontics Division, Health Sciences Center. Florianópolis. BR
  • Bortoluzzi, Eduardo Antunes; Universidade Federal de Santa Catarina. Department of Dentistry, Endodontics Division, Health Sciences Center. Florianópolis. BR
Braz. dent. j ; 31(5): 516-522, Sept.-Oct. 2020. tab, graf
Article in English | LILACS, BBO | ID: biblio-1132339
ABSTRACT
Abstract The purpose of this study was to evaluate the accuracy of Cone-Beam Computed Tomography (CBCT) in measuring radicular dentin thickness focused on intraradicular post placement planning treatment. Ten single-rooted human premolars were selected. The teeth were divided into three segments (cervical, middle and apical). The coronal face of the apical and middle sections was selected for the dentin thickness assessment; which was measured from the external root surface to the root canal wall, on the buccal, lingual, mesial, and distal surfaces of each tooth. In situ anatomical measurement was the reference standard, and the corresponding axial CBCT imaging were evaluated by the i-CAT software. The one-way ANOVA test and the Bonferroni post hoc test were applied to compare the groups (p>0.05). CBCT imaging measurements (p=0.003) overestimated the radicular dentin thickness compared to the reference standard. Descriptive analysis showed that the greatest difference between the reference standard and the tomographic measurement means were 0.20 mm. One-way ANOVA test found the statistical significant difference among group's measurements. Bonferroni correction demonstrated statistically significant difference only related lingual surface for the CBCT imaging measurements. CBCT imaging measurements overestimated the radicular dentin thickness. However, the measurement difference was clinically acceptable.
RESUMO
Resumo O objetivo deste estudo foi avaliar a precisão da Tomografia Computadorizada de Feixe Cônico (TCFC) na mensuração da espessura da dentina radicular no planejamento de tratamento envolvendo a cimentação de pinos intrarradiculares. Dez pré-molares humanos unirradiculares foram selecionados. Os dentes foram divididos em três segmentos (cervical, médio e apical). A face coronal dos terços apical e médio foi selecionada para a avaliação da espessura da dentina; que foi medida a partir da superfície externa da raiz até a parede do canal radicular, nas superfícies vestibular, lingual, mesial e distal de cada dente. A medida anatômica in situ foi o padrão de referência, e a imagem de TCFC axial correspondente foi avaliada pelo software i-CAT. O teste de 1-fator ANOVA e o teste post hoc de Bonferroni foram aplicados para comparar os grupos (p>0,05). As medidas de imagem da TCFC (p=0,003) superestimaram a espessura da dentina radicular em comparação a referência padrão. A análise descritiva mostrou que a maior diferença entre a referência padrão e a medida tomográfica foi de 0,20 mm. O teste ANOVA encontrou a diferença de significância estatística entre as medidas do grupo. A correção de Bonferroni demonstrou diferença estatisticamente significante apenas relacionada às medidas de imagem da TCFC. A medida de imagem da TCFC superestimou a espessura da dentina radicular. No entanto, a diferença de medição foi clinicamente aceitável.
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Full text: Available Index: LILACS (Americas) Main subject: Tooth Root / Cone-Beam Computed Tomography Limits: Humans Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2020 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal de Santa Catarina/BR

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Full text: Available Index: LILACS (Americas) Main subject: Tooth Root / Cone-Beam Computed Tomography Limits: Humans Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2020 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal de Santa Catarina/BR