中国实用口腔科杂志2026，Vol.19Issue(2)：202-208,7.DOI:10.19538/j.kq.2026.02.012
基于AutoCAD软件测量的牙槽骨吸收界线在辅助诊断Ⅱ期牙周炎中应用初探
A preliminary study on the application of AutoCAD-based measurements of alveolar bone loss boundaries in assisting the diagnosis of stage Ⅱ periodontitis
摘要
Abstract
Objective To apply AutoCAD software to measure alveolar bone loss boundaries and to preliminarily evalu-ate its feasibility as reference values for assisting the diagnosis of stage Ⅱ periodontitis.Methods A retrospective anal-ysis was conducted on clinical and radiographic data from 612 patients who underwent periapical radiography at the De-partment of Radiology,Stomatology Hospital of Shanxi Medical University between 2023 and 2024.A total of 1 272 teeth were included,comprising 116 central incisors,110 lateral incisors,106 canines,340 first premolars,330 second premo-lars,and 270 molars.AutoCAD software was used to pre-cisely measure root length,as well as 15％and 33％of root length on periapical radiographs.In addition,the propor-tions of root length corresponding to distances of 1 mm and 2 mm apex to the cemento-enamel junction(CEJ)were calculated.For a representative case of mild periodontitis,20 periodontists independently assessed the degree of alveolar bone loss of the mandibular second premolar using three ap-proaches:visual estimation by clinicians,AutoCAD-based measurement,and assessment based on the reference values established in this study.Results In the maxilla,15％of root length for central incisors,lateral incisors,canines,first premolars,second premolars,buccal roots of molars,and palatal roots of molars was(2.35±0.16)mm,(2.24±0.16)mm,(2.83±0.08)mm,(2.14±0.18)mm,(2.15±0.17)mm,(1.50±0.23)mm,and(2.20±0.15)mm,respectively,while the corresponding 33％values were(5.17±0.35)mm,(4.93±0.36)mm,(6.24±0.19)mm,(4.70±0.40)mm,(4.72±0.37)mm,(3.31±0.51)mm,and(4.83±0.32)mm.The proportions of root length represented by 2 mm apex to the CEJ were(13±1)％,(13±1)％,(11±0)％,(14±1)％,(14±1)％,(20±3)％,and(14±1)％,respectively.In the mandible,15％of root length for central incisors,lateral incisors,canines,first premolars,second premolars,first molars,and second molars was(2.13±0.10)mm,(2.22±0.12)mm,(2.72±0.22)mm,(2.28±0.16)mm,(2.26±0.18)mm,(2.03±0.16)mm,and(1.99±0.19)mm,respectively,while the corresponding 33％values were(4.68±0.21)mm,(4.88±0.26)mm,(5.98±0.47)mm,(5.01±0.35)mm,(4.97±0.40)mm,(4.48±0.34)mm,and(4.38±0.42)mm.The proportions of root length represented by 2 mm apex to the CEJ were(14±1)％,(14±1)％,(11±1)％,(13±1)％,(13±1)％,(15±1)％,and(15±1)％,respectively.Case-based analysis showed that using visual estimation,10％(2/20)of clinicians made the di-agnosis of stage Ⅰ periodontitis and 90％(18/20)made the diagnosis of stage Ⅱ periodontitis.In contrast,assessments based on AutoCAD-based measurements and the reference values established in this study demonstrated good inter-ob-server agreement among all clinicians,with intraclass correlation coefficients of 0.86 and 0.89,respectively,both support-ing a diagnosis of stage Ⅱ periodontitis.Conclusion AutoCAD-based reference values of 15％and 33％of root length measured on periapical radiographs may be used to assist the diagnosis of stage Ⅱ periodontitis.In contrast,a CEJ-to-al-veolar crest distance greater than 2 mm as the criterion for deciding alveolar bone loss has limitations.关键词
Ⅱ期牙周炎/牙周病新分类/诊断/AutoCAD/骨吸收Key words
stage Ⅱ periodontitis/new classification of periodontal diseases/diagnosis/AutoCAD/bone loss分类
医药卫生引用本文复制引用
张碧桐,任秀云..基于AutoCAD软件测量的牙槽骨吸收界线在辅助诊断Ⅱ期牙周炎中应用初探[J].中国实用口腔科杂志,2026,19(2):202-208,7.基金项目
山西省重点研发计划项目(202302130501009) （202302130501009）
