Accuracy of volumetric measurement of simulated root resorption lacunas based on cone beam computed tomography

Wang, Y.; He, Shushu; Guo, Yongwen; Wang, S.; Chen, S.

doi:10.1111/ocr.12016

Cited by 32 publications

(27 citation statements)

References 21 publications

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“…A recent case report using CBCT, microfocus CT and scanning electron microscopy describes the valuable use of CBCT in the diagnosis of root resorption[27]. Furthermore, ex-vivo studies using bovine teeth showed that, when compared to measurements made from micro CT, CBCT scans detect simulated defects of 0.6 mm depth accurately[28]. …”

Section: Introductionmentioning

confidence: 99%

Three-dimensional characterization of root morphology for maxillary incisors

et al. 2017

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The aim of this study was to test the reproducibility of three-dimensional (3D) surface models of maxillary incisors and to propose a characterization of root morphology. The sample was comprised of pre-treatment cone-beam computed tomography (CBCT) images of fifty-five patients. The CBCTs were used to construct 3D surface models of the maxillary incisors. The reproducibility of surface models was tested by repeated construction of them by two observers. A 3D surface model that corresponded to the average of all lateral and all central incisors was generated. 3D surface distances and vector differences were calculated for each individual tooth and the average of the teeth considered. The corresponding points on the 3D surface mesh for each subgroup were compared statistically to those of the neutral subgroup using shape analysis MANCOVA and Hotelling’s t-statistic (p < 0.05). Repeated construction of surface models demonstrated adequate inter-rater reproducibility. The distribution of 3D models into root morphology subgroups was: blunt (11% and 26% of the central and lateral incisors, respectively), conical (15% of the central incisors), long (27% and 20% of the central and lateral incisors, respectively), and short (15% and 4% of the central and lateral incisors, respectively). Compared to the neutral average, statistically significant differences in root morphology were found for blunt, long, conical, and short central incisors and for blunt, long, and short lateral incisors. We can conclude that 3D surface models construction for upper incisors is reproducible. 3D shape analysis using CBCT images allows a phenotypic characterization of incisor root morphology.

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Section: Introductionmentioning

confidence: 99%

Three-dimensional characterization of root morphology for maxillary incisors

et al. 2017

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“…It is noteworthy that the results of this study were obtained from images having a voxel resolution of 200 mm. Wang et al 34 evaluated the accuracy of volumetric measurement of simulated root resorption cavities with CBCT using a 125-mm voxel size and concluded that CBCT was not sufficient for detecting cavities smaller than 1.07 mm 3 because of manual segmentation. Thus, in our study, small volumetric changes might not be discerned, causing an underestimation of volumetric changes.…”

Section: Limitationsmentioning

confidence: 99%

Evaluation and comparison of root resorption between tooth-borne and tooth-tissue borne rapid maxillary expansion appliances: A CBCT study

Di̇ndaroğlu

Doğan

2015

The Angle Orthodontist

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Objective: To compare volumetric root resorption after rapid maxillary expansion (RME) between tooth-borne and tissue-borne appliances using CBCT. Repair in resorption cavities after 6 months of fixed retention was also compared. Materials and Methods: A sample of 33 subjects were randomly divided into two groups: Hyrax (n 5 16) and Haas (n 5 17). CBCT scans were taken 6 months before expansion, immediately after expansion, and 6 months after fixed retention. Mimics Innovation V 16.0 software was used for segmentation and volumetric measurement of 198 teeth. Bland-Altman plots, independent samples t test, repeated measures analysis of variance, and the Friedman test were used for statistical analysis. Results: Differences in root resorption after RME and repair after retention were not significant between the hyrax and Haas appliances or between male and female. Significant differences were found between preexpansion and postexpansion root volumes in the first premolars and molarseven in unattached second premolars. When the percentage of root volume loss is considered, no significant difference was found between the first premolar, second premolar, and first molar. Volumetric changes after 6 months of retention were not statistically significant.

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“…The accuracy of CBCT imaging in measuring osteolytic lesion volume was assessed in several studies (6)(7)(8)(9). Ahlowalia et al (7) compared the accuracy of CBCT imaging with micro-computed tomographic imaging in measuring irregularshaped cavities created in bovine bone.…”

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confidence: 99%