Measurement of root surface area of permanent teeth with root variations in a Chinese population—A micro-CT analysis

Gu, Yongchun; Tang, Ying; Zhu, Qingyuan; Feng, Xingmei

doi:10.1016/j.archoralbio.2015.12.001

Cited by 26 publications

(24 citation statements)

References 18 publications

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“…Micro-CT enables accurate observations of tooth shapes as well as accurate surface area measurements [1334]. However, it is not appropriate for clinical use because it involves higher levels of radiation than CBCT [35].…”

Section: Discussionmentioning

confidence: 99%

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Three-dimensional measurement of periodontal surface area for quantifying inflammatory burden

Park

Han

et al. 2017

J Periodontal Implant Sci

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PurposeMeasurement of the root surface area (RSA) is important in periodontal treatment and for the evaluation of periodontal disease as a risk factor for systemic disease. The aim of this study was to measure the RSA at 6 mm below the cementoenamel junction (CEJ) using the Mimics software (Materialise, Leuven, Belgium).MethodsWe obtained cone-beam computed tomography (CBCT) data from 33 patients who had visited the Department of Oral and Maxillofacial Radiology of Dankook University Dental Hospital. The patients comprised 17 men and 16 women aged from 20 to 35 years, with a mean age of 24.4 years. Only morphologically intact teeth were included in our data. Because the third molars of the maxilla and mandible have a high deformation rate and were absent in some participants, they were not included in our research material.ResultsThe CBCT data were reconstructed into 3-dimensional (3D) teeth models using the Mimics software, and the RSA at 6 mm below the CEJ was separated and measured using 3-Matic (Materialise). In total, 924 3D teeth models were created, and the area at 6 mm below the CEJ could be isolated in all the models. The area at 6 mm below the CEJ was measured in all teeth from the 33 patients and compared based on sex and position (maxilla vs. mandible).ConclusionsIn this study, we demonstrated that it was feasible to generate 3D data and to evaluate RSA values using CBCT and the Mimics software. These results provide deeper insights into the relationship between periodontal inflammatory burden and systemic diseases.

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Section: Discussionmentioning

confidence: 99%

“…Numerous recent studies have been performed to quantify the inflamed surface area, but their measurement methods lacked accuracy and precision. One study used micro-computed tomography (micro-CT) to overcome these shortcomings, and also measured the root surface areas (RSAs) using 3-dimensional (3D) data from extracted teeth [13]. …”

Section: Introductionmentioning

confidence: 99%

Three-dimensional measurement of periodontal surface area for quantifying inflammatory burden

Park

Han

et al. 2017

J Periodontal Implant Sci

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“…A previous study,10 which evaluated the root resorption by volumetric CBCT measurements after molar intrusion, demonstrated that CBCT was effective in evaluating volumetric root resorption, with no statistically significant difference between the laser scanning and the CBCT measurements. Gu et al11 investigated the influence of root variations on the root surface area by using micro-computed tomography (micro-CT) of the extracted teeth and found that micro-CT was a precise technique for root surface area measurement. The quality and resolution of micro-CT images were better than those of CBCT images 1213.…”

Section: Discussionmentioning

confidence: 99%

Comparison of 2 root surface area measurement methods: 3-dimensional laser scanning and cone-beam computed tomography

et al. 2017

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PurposeThe aim of this study was to compare the use of 3-dimensional (3D) laser scanning and cone-beam computed tomography (CBCT) as methods of root surface measurement.Materials and MethodsThirty teeth (15 maxillary first premolars and 15 mandibular first premolars) from 8 patients who required extractions for orthodontic treatment were selected. Before extraction, pre-treatment CBCT images of all the patients were recorded. First, a CBCT image was imported into simulation software (Mimics version 15.01; Materialise, Leuven, Belgium) and the root surface area of each tooth was calculated using 3-Matic (version 7.01, Materialise, Leuven, Belgium). After extraction, all the teeth were scanned and the root surface area of each extracted tooth was calculated. The root surface areas calculated using these 2 measurement methods were analyzed using the paired t-test (P<.05). Correlations between the 2 methods were determined by calculating the Pearson correlation coefficient. The intraclass correlation coefficient (ICC) was used to assess intraobserver reliability.ResultsThe root surface area measurements (230.11±41.97 mm2) obtained using CBCT were slightly greater than those (229.31±42.46 mm2) obtained using 3D laser scanning, but not significantly (P=.425). A high Pearson correlation coefficient was found between the CBCT and the 3D laser scanner measurements. The intraobserver ICC was 1.000 for 3D laser scanning and 0.990 for CBCT.ConclusionThis study presents a novel CBCT approach for measuring the root surface area; this technique can be used for estimating the root surface area of non-extracted teeth.

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“…The application of three‐dimensional (3D) radiographic examination for routine periodontal assessment in dental clinics has previously been impractical; however, it has recently become a feasible and popular dental treatment (Mol, 2004). The amount of alveolar bone supporting the permanent dentition was assessed according to the root surface area (RSA) from both 2D and 3D perspectives (Gu, Tang, Zhu, & Feng, 2016; Hujoel, 1994). A report used a dental laser scanner to investigate single‐rooted human premolars and assessed the amount of RBL from a 2D viewpoint (Hong et al., 2017).…”

Section: Introductionmentioning

confidence: 99%

“…The dental fields have utilized micro‐computed tomography (micro‐CT) to explore the microstructure of alveolar bone, dental pulp and RSA (Ferraz et al., 2015; Gu et al., 2016; Kato & Ohno, 2009; Parsa, Ibrahim, Hassan, van der Stelt, & Wismeijer, 2015; Penny & Kraal, 1979). After tooth scanning, the restored 3D data of the tested items can be converted into a 2D output by using an associated software program for 3D supporting bone loss (3D‐SBL) calculations evolved from 3D RSA measurement.…”

Section: Introductionmentioning

confidence: 99%

The correspondence of 3D supporting bone loss and crown‐to‐root ratio to periodontitis classification

Hong

Mei

Liu

et al. 2020

J Clinic Periodontology

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Aim Assessing the application of three‐dimensional clinical attachment loss (3D‐CAL), 3D supporting bone loss (3D‐SBL), supracrestal tissue attachment (STA), and crown‐to‐root ratio (CRR) in evaluating the 2017 periodontitis classification. Materials and methods We analysed ninety single‐rooted human premolars with micro‐computed tomography. The amount of 3D‐SBL, linear radiographic bone loss (RBL), and CRR corresponding to various periodontitis stages as well as the statistical significance was investigated. Results From a 3D perspective, the premolars with a 21% of 3D‐SBL at 2.0 mm coronal root length (RL) and 15% RBL corresponded to the periodontitis stage I. Premolars with a 44% of 3D‐SBL at coronal 4.2‒4.4 mm RL and 33% RBL accorded with the periodontitis stage II. Excluding the consideration of STA, CRR = 5:6 and 4:3 were associated with the levels at 15% and 33% RBL, respectively. Conclusions A greater percentage of 3D‐CAL than that of 2D‐CAL is significant at evaluated levels. It is feasible to correlate the 3D‐SBL, 3D‐CAL, and STA parameters to evaluate the stages of periodontitis severity. However, the current use of RBL and CAL as applied for staging in the 2017 classification might be inconsistent with the evaluated premolar roots length, when STA dimensions are considered.

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Measurement of root surface area of permanent teeth with root variations in a Chinese population—A micro-CT analysis

Cited by 26 publications

References 18 publications

Three-dimensional measurement of periodontal surface area for quantifying inflammatory burden

Three-dimensional measurement of periodontal surface area for quantifying inflammatory burden

Comparison of 2 root surface area measurement methods: 3-dimensional laser scanning and cone-beam computed tomography

The correspondence of 3D supporting bone loss and crown‐to‐root ratio to periodontitis classification

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