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New classification for bone type at dental implant sites: a dental computed tomography study.
Wang, Shiuan-Hui; Hsu, Jui-Ting; Fuh, Lih-Jyh; Peng, Shin-Lei; Huang, Heng-Li; Tsai, Ming-Tzu.
Affiliation
  • Wang SH; School of Dentistry, China Medical University, Taichung, 404, Taiwan.
  • Hsu JT; School of Dentistry, China Medical University, Taichung, 404, Taiwan. jthsu@mail.cmu.edu.tw.
  • Fuh LJ; Department of Biomedical Engineering, China Medical University, Taichung, 404, Taiwan. jthsu@mail.cmu.edu.tw.
  • Peng SL; School of Dentistry, China Medical University, Taichung, 404, Taiwan.
  • Huang HL; Department of Dentistry, China Medical University and Hospital, Taichung, 404, Taiwan.
  • Tsai MT; Department of Biomedical Imaging and Radiological Science, China Medical University, Taichung, 404, Taiwan.
BMC Oral Health ; 23(1): 324, 2023 05 25.
Article in En | MEDLINE | ID: mdl-37231447
OBJECTIVE: This study proposed a new classification method of bone quantity and quality at the dental implant site using cone-beam computed tomography (CBCT) image analysis, classifying cortical and cancellous bones separately and using CBCT for quantitative analysis. METHODS: Preoperative CBCT images were obtained from 128 implant patients (315 sites). First, measure the crestal cortical bone thickness (in mm) and the cancellous bone density [in grayscale values (GV) and bone mineral density (g/cm3)] at the implant sites. The new classification for bone quality at the implant site proposed in this study is a "nine-square division" bone classification system, where the cortical bone thickness is classified into A: > 1.1 mm, B:0.7-1.1 mm, and C: < 0.7 mm, and the cancellous bone density is classified into 1: > 600 GV (= 420 g/cm3), 2:300-600 GV (= 160 g/cm3-420 g/cm3), and 3: < 300 GV (= 160 g/cm3). RESULTS: The results of the nine bone type proportions based on the new jawbone classification were as follows: A1 (8.57%,27/315), A2 (13.02%), A3 (4.13%), B1 (17.78%), B2 (20.63%), B3 (8.57%) C1 (4.44%), C2 (14.29%), and C3 (8.57%). CONCLUSIONS: The proposed classification can complement the parts overlooked in previous bone classification methods (bone types A3 and C1). TRIAL REGISTRATION: The retrospective registration of this study was approved by the Institutional Review Board of China Medical University Hospital, No. CMUH 108-REC2-181.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Dental Implants Type of study: Observational_studies Limits: Humans Language: En Journal: BMC Oral Health Journal subject: ODONTOLOGIA Year: 2023 Document type: Article Affiliation country: Taiwan Country of publication: United kingdom

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Dental Implants Type of study: Observational_studies Limits: Humans Language: En Journal: BMC Oral Health Journal subject: ODONTOLOGIA Year: 2023 Document type: Article Affiliation country: Taiwan Country of publication: United kingdom