Accuracy of Supported Root Ratio Estimation From Projected Length and Area Using Digital Radiographs

Chen, Ssu Kuang; Pan, Ju Hung; Chen, Chung-Ming; Jeng, Jeng Ywan

doi:10.1902/jop.2004.75.6.866

Cited by 11 publications

(8 citation statements)

References 11 publications

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“…Traditionally, 2‐D radiographic images and histomorphometry have provided linear data to enable investigators to make quantitative measurements associated with alveolar bone affected by periodontitis or following regenerative therapy 16,17 . Although new technologies are available for 3‐D assessment of bone volume, in general, approaches still measure 2‐D images linearly after projection from 3‐D real structures 18,19 . These methods have limitations, such as the accuracy or the precision of measurements 20,21 .…”

Section: Discussionmentioning

confidence: 99%

Three‐Dimensional Micro‐Computed Tomographic Imaging of Alveolar Bone in Experimental Bone Loss or Repair

Park

Abramson

Taba

et al. 2007

Journal of Periodontology

187

180

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Background-Micro-computed tomography (micro-CT) offers significant potential for identifying mineralized structures. However, three-dimensional (3-D) micro-CT of alveolar bone has not been adapted readily for quantification. Moreover, conventional methods are not highly sensitive for analyzing bone loss or bone gain following periodontal disease or reconstructive therapy. The objective of this investigation was to develop a micro-CT methodology for quantifying toothsupporting alveolar bone in 3-D following experimental preclinical situations of periodontitis or reconstructive therapy.

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Section: Discussionmentioning

confidence: 99%

Three‐Dimensional Micro‐Computed Tomographic Imaging of Alveolar Bone in Experimental Bone Loss or Repair

Park

Abramson

Taba

et al. 2007

Journal of Periodontology

187

180

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“…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. 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%

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

Hong

Chang

Hong

et al. 2017

Sci Rep

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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.

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“…The root was divided into n parts, each part was supposed to be a cylinder, the height of the cylinder was h, and the diameter of the cylinder was d, so RSA = ∑πhd i = π∑hd i . If h was small enough, ∑hd i = S, and RSA = πS 16 . Then, the loss of RSA was estimated: ratio ðrÞ = RSA l /RSA i × 100% [15,16].…”

Section: Rsa Measurement and Alveolar Bonementioning

confidence: 99%

Tooth Loss after Jaw Curettage Surgery: Associated Factors and Potential Benefit of Splint Application

Qin

Cao

et al. 2022

Disease Markers

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Background. This retrospective study is aimed at (I) assessment of tooth loss and related parameters after jaw curettage of benign lesions and (II) assessment of the outcome of jaw curettage supported by splint insertion after at least six months of follow-up. Material and Methods. For (I), patients who had jaw curettage surgery in the Department of Oral and Maxillofacial Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University (Guangzhou, China) from July 2015 to June 2019 were included. For part (II), consecutive patients who came to the department from July to December 2019 that were additionally treated with dental splinting were involved in this study. Based on the patient records, age, gender, initial tooth mobility, follow-up outcome, and potential tooth loss (intra- or postoperatively) were recorded. Based on available radiographs, alveolar crest bone loss and root surface area supported by bone (RSA) were determined. Results. (I) 128 patients with 305 teeth were included, of which 40 teeth were lost (success rate 86.9%), without statistical difference in gender, age, or tooth type ( P > 0.05 ). Tooth mobility, RSA, and the presence of alveolar crest bone defects were associated to tooth loss ( P < 0.001 ). (II) 17 patients with a medium follow-up period of 11 months (range 9 to 13 months) were enrolled. All lesion-involving teeth supported by splint treatment at risks of loss were preserved, showing an effective tooth retention rate in 17/17 cases (74/74 teeth, success rate: 100%). Conclusions. Tooth mobility and bone loss (lesion-related and/or periodontal) are potential risk predictors for tooth loss in the first year after jaw curettage surgery. Dental splints could be recommendable for teeth involved by jaw benign lesions with little bone support.

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Accuracy of Supported Root Ratio Estimation From Projected Length and Area Using Digital Radiographs

Cited by 11 publications

References 11 publications

Three‐Dimensional Micro‐Computed Tomographic Imaging of Alveolar Bone in Experimental Bone Loss or Repair

Three‐Dimensional Micro‐Computed Tomographic Imaging of Alveolar Bone in Experimental Bone Loss or Repair

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

Tooth Loss after Jaw Curettage Surgery: Associated Factors and Potential Benefit of Splint Application

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