Calculation of Simplified Single‐Root Surface Area From Simulated X‐Ray Projection

Chen, Ssu Kuang; Chen, Chung-Ming; Jeng, Jeng Ywan

doi:10.1902/jop.2002.73.8.906

Cited by 9 publications

(4 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The RSA of a tooth with a single root was evaluated with clinical accuracy from the projection data7. However, another study concluded that a reliable appraisal of the RSA and BSH ratio could not be determined from 2D linear or area data8.…”

Section: Discussionmentioning

confidence: 99%

“…However, another study concluded that a reliable appraisal of the RSA and BSH ratio could not be determined from 2D linear or area data8. The inconsistent outcomes may be due to different sample sizes, appliances, methodologies, or statistical analyses78.…”

Section: Discussionmentioning

confidence: 99%

“…The roots of human teeth present a tapered but also complex anatomic morphology (i.e., the radius at a cross-section varies when measured from the center of the root to the facial, lingual, mesial, or distal root surface at different corono-apical levels). Scholars have investigated the quantitative relationship between the amount of residual periodontal attachment and total root surface area of one tooth with regard to periodontium loss5678. However, the differentiated information regarding the percentage of maximal bone support evaluated using a 2D view compared with that using a 3D image remains limited.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Decreased Amount of Supporting Alveolar Bone at Single-Rooted Premolars Is Under Estimated by 2D Examinations

Hong

Chang

Hong

et al. 2017

Sci Rep

View full text Add to dashboard Cite

The purpose of this study was to relate the proportions of bone-supported root length of a 2D view into the amount of a 3D bone-attached root surface area (BA-RSA) by using a dental laser scanner examination. White-light 3D scanning technology was used to probe 36 maxillary and 35 mandibular single-rooted premolars. The bone-supported height (BSH) and BA-RSA at designated levels (95–25%) were compared using statistical t tests. The 100% BSH and BA-RSA of the maxillary/mandibular premolars were 12.6 ± 1.60 mm/13.45 ± 1.47 mm (p < 0.05) and 220.78 ± 35.31 mm2/199.51 ± 26.33 mm2 (p < 0.01), respectively. Approximately 79–80%, 59–60%, and 35–36% premolars 2D BSH remained in comparison to 75%, 50%, and 25% 3D BA-RSA preservation, respectively. However, corresponding to a 75%, 50%, and 25% 2D BSH reserve, premolars retained 67–68%, 39–41%, and 15–17% 3D BA-RSA, respectively. When taking 1.0 mm connective tissue attachment into account, 60% 3D BA-RSA and 50% 2D BSH loss were noted at the 5.1–5.4 mm clinical attachment level. Assigning a periodontal prognosis and determining the severity of periodontitis for premolars with alveolar bone loss based on 3D’s or 2D’s measurement is inconsistent.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Decreased Amount of Supporting Alveolar Bone at Single-Rooted Premolars Is Under Estimated by 2D Examinations

Hong

Chang

Hong

et al. 2017

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Meanwhile, the RSA is associated with tooth size, morphology, length, diameter, trunk width and the number of roots, so accurate measurement is di cult. Traditional measurement methods include lm forming method, image segmentation method and quality conversion method (Yamamoto et al, 2006) (Chen et al, 2002), but they all need to measure the extracted teeth.…”

Section: Introductionmentioning

confidence: 99%

Tooth Root Surface Area Calculation in Cone-Beam CT via Deep Segmentation

Jia

Zhan

et al. 2022

Preprint

View full text Add to dashboard Cite

Purpose Periodontitis is the main cause of tooth loss in adults. It is important to calculate healthy periodontal membrane area to evaluate the severity of periodontitis. The aim of this study is to develop a computer-assisted system based on convolutional neural network (CNN) to segment and calculate the tooth root surface area (RSA) on cone-beam CT(CBCT). Methods We presented a deep learning system to automatically identify the alveolar bone and tooth regions by applying an advanced Mask R-CNN segmentation on clinically dataset of 2000 CBCT images. Twenty-four teeth from 20 patients who required tooth extraction were selected. Before extraction, pre-treatment CBCT images of all the patients were recorded. The RSA of each tooth was calculated by CNN. After extraction, all the teeth were scanned by CBCT again. The RSA of each extracted tooth was calculated by CNN again and also calculated by medical image control system (Mimics version 15.01; Materialise, Leuven, Belgium). RSA of 24 teeth calculated using these two measurement methods were analyzed by the paired t-test (P < 0.05) and Bland-Altman plot consistency analysis. Results The paired t-test result showed that there was no statistical difference of RSA of 24 teeth calculated by CNN and Mimics (p > 0.05). The Bland-Altman plot test also showed the good consistency. Conclusion We applied Mask R-CNN to segment tooth root and calculate the RSA on CBCT. Such approach presents a novel, fast, automatic and accurate approach to measure the RSA and can be used for estimating the non-extracted teeth.

show abstract

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

Tang

Zhu

et al. 2016

Archives of Oral Biology

View full text Add to dashboard Cite

Calculation of Simplified Single‐Root Surface Area From Simulated X‐Ray Projection

Abstract: The circumference of an elliptical object can be approximated from the projection data of this ellipse. Therefore, the surface area of a single tooth root may be estimated with clinically useful accuracy from the projection data.

Cited by 9 publications

References 8 publications

Decreased Amount of Supporting Alveolar Bone at Single-Rooted Premolars Is Under Estimated by 2D Examinations

Decreased Amount of Supporting Alveolar Bone at Single-Rooted Premolars Is Under Estimated by 2D Examinations

Tooth Root Surface Area Calculation in Cone-Beam CT via Deep Segmentation

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

Contact Info

Product

Resources

About