Department of Restorative Dentistry and Periodontology, Dublin Dental University Hospital, Trinity College, Dublin, Ireland.
Department of Public Health and Primary Care, Institute of Population Health, Trinity College Dublin, Dublin, Ireland.
Clin Exp Dent Res. 2023 Jun;9(3):411-417. doi: 10.1002/cre2.734. Epub 2023 Apr 7.
To evaluate the efficacy of a novel mount with torque control for tightening of Osstell® transducers and to determine the reliability of recorded ISQ measurements from implants placed in various bone densities. MATERIAL AND METHODS: Fifty-six implants, comprising seven different implant types, were placed in eight polyurethane blocks representing D1, D2, D3, and D4 bone densities. Resonance frequency analysis (RFA) transducers were attached to each implant in four different ways: (a) hand tightening, (b) hand tightening with a SmartPeg Mount™, (c) hand tightening using the novel mount with torque control (SafeMount) and (d) tightening to 6 Ncm with a calibrated torque device. ISQ measurements were taken and a second operator repeated the measurements. Intraclass correlation coefficient (ICC) was calculated to assess the reliability of the measurements and linear mixed effects regression was employed to determine the effect explanatory variables had on ISQ values.
There was a statistically significant difference in ISQ values obtained by hand tightening transducers compared to the calibrated torque device p < .001, 95%(-2.89, -1.21) but not between any other tightening methods. There was excellent agreement between the two RFA devices (ICC 0.986) and between buccal and mesial measurements (ICC 0.977). For all transducer tightening methods there was excellent inter-operator agreement in D1 and D2 (ICC > 0.8) but very poor agreement in D4 (ICC < 0.24). Bone density accounted for 36% of the variation in ISQ values, the implant for 11% and the operator for 6%.
SafeMount, did not significantly improve the reliability of the RFA measurements when compared to the standard mount, but calibrated torque devices seem to have benefits when compared to tightening the transducers by hand. Results also indicate that the ISQ values should be interpreted with caution when measuring implant stability in poor quality bone regardless of the implant geometry.
评估一种具有扭矩控制功能的新型种植体基台在拧紧 Osstell®传感器方面的疗效，并确定在不同骨密度下植入物记录的 ISQ 测量值的可靠性。
将 56 个种植体（包含 7 种不同种植体类型）植入 8 个代表 D1、D2、D3 和 D4 骨密度的聚亚安酯块中。将 RFA 传感器分别以四种方式连接到每个种植体上：（a）手动拧紧，（b）使用 SmartPeg Mount™手动拧紧，（c）使用具有扭矩控制功能的新型种植体基台（SafeMount）手动拧紧，（d）使用校准扭矩装置拧紧至 6 Ncm。记录 ISQ 值，由第二位操作员重复测量。计算组内相关系数（ICC）以评估测量值的可靠性，并采用线性混合效应回归确定解释变量对 ISQ 值的影响。
与校准扭矩装置相比，手动拧紧传感器时获得的 ISQ 值存在显著差异（p < .001，95%置信区间[-2.89，-1.21]），但与其他任何拧紧方法之间没有差异。两种 RFA 设备之间具有极好的一致性（ICC 0.986），颊侧和近中测量值之间具有极好的一致性（ICC 0.977）。对于所有传感器拧紧方法，在 D1 和 D2 中，两位操作员之间具有极好的一致性（ICC > 0.8），但在 D4 中一致性非常差（ICC < 0.24）。骨密度占 ISQ 值变化的 36%，种植体占 11%，操作员占 6%。
与标准基台相比，SafeMount 并未显著提高 RFA 测量值的可靠性，但与手动拧紧传感器相比，校准扭矩装置似乎具有优势。结果还表明，无论种植体几何形状如何，在质量较差的骨中测量种植体稳定性时，应谨慎解释 ISQ 值。
