Bertl Michael H, Weinberger Thomas, Schwarz Kerstin, Gruber Reinhard, Crismani Adriano G
Division of Orthodontics, Bernhard Gottlieb University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.
Eur J Oral Sci. 2012 Jun;120(3):255-8. doi: 10.1111/j.1600-0722.2012.00959.x. Epub 2012 Apr 21.
Ankylosed teeth are considered in orthodontic treatment planning; however, diagnostic tools to quantify the rigidity of the tooth-to-bone connection are rare. Resonance frequency analysis (RFA) can quantify the rigidity of the dental implant-to-bone connection and thus may serve as a potential diagnostic tool to identify ankylosed teeth. To test this assumption, we examined 15 and 30 primary mandibular molars, with and without clinical signs of ankylosis, using the Osstell Mentor system. A cut-off implant stability quotient (ISQ) of 43 provided a specificity of 100% and a sensitivity of 53.3% when measured in the mesio-distal direction or a sensitivity of 20% when measured in the bucco-lingual direction. Based on a receiver-operating characteristic (ROC), the area under the curve (AUC) of 0.807 showed the mesio-distal direction of measurement to be a test of moderate discriminatory power. Given its non-invasiveness, RFA may serve as a quantitative diagnostic supplement to the clinical examination of potentially ankylosed primary molars.
在正畸治疗计划中会考虑到牙齿粘连的情况；然而，用于量化牙齿与骨连接刚度的诊断工具却很少见。共振频率分析（RFA）能够量化牙种植体与骨连接的刚度，因此有可能作为识别粘连牙齿的潜在诊断工具。为了验证这一假设，我们使用Osstell Mentor系统对15颗和30颗有或没有临床粘连迹象的下颌乳磨牙进行了检查。当在近远中方向测量时，种植体稳定性商数（ISQ）的临界值为43时，特异性为100%，敏感性为53.3%；而在颊舌方向测量时，敏感性为20%。基于受试者工作特征（ROC）曲线，曲线下面积（AUC）为0.807，表明近远中测量方向具有中等鉴别能力。鉴于其非侵入性，RFA可作为对潜在粘连乳磨牙进行临床检查的定量诊断补充手段。
