Correlation between index panoramic radiomorfometric and primary stability of implants

ABSTRACT Objective: To evaluate the correlation between panoramic radiomorphometric index of bone density, stability quotient and the insertion torque of the implant. Methods: A total of 97 implants were analyzed. Panoramic radiographs calculated the Panoramic Mandibular Index and the Mental Index, in addition to the evaluation of the Mandibular Cortical Index. The insertion torque and the stability quotient of the implant were recorded during the surgical moment. The correlation analysis between the variables described above was performed using the Spearman test, at a significance level of 5%. Results: Significant correlations were found between age and mandibular cortical index (p = 0.000 and r = 0.429), insertion torque and age (p = 0.011 and r = 0.263), stability quotient of the implant in the Vestibulo-Lingual direction and The mesio-distal direction (p = 0.000 and r = 0.582), mandibular and mental panoramic index (p = 0.000 and r = 0.809), mandibular and mental cortical index (p = 0.005 and r = -0.288) and mandibular cortical index Mandibular panoramic view (p = 0.000 and r = -0.366). All other correlations were not significant (p <0.05). Conclusion: The results of this work suggest that the panoramic radiomorphometric indices may contribute to the pre-diagnosis of the primary stability of dental implants.

摘要
目的：评估骨密度曲面体层放射形态计量指数（panoramic radiomorphometric index of bone density）、种植体稳定系数（stability quotient）与种植体植入扭矩（insertion torque）之间的相关性。
方法：本研究共分析97枚种植体。通过曲面体层片计算下颌曲面体层指数（Panoramic Mandibular Index）与颏部指数（Mental Index），并评估下颌皮质指数（Mandibular Cortical Index）。术中记录种植体的植入扭矩与稳定系数。采用Spearman检验对上述变量进行相关性分析，检验水准设定为5%。
结果：本研究发现年龄与下颌皮质指数存在显著相关性（p=0.000，r=0.429）；植入扭矩与年龄存在显著相关性（p=0.011，r=0.263）；种植体颊舌向与近远中向的稳定系数存在显著相关性（p=0.000，r=0.582）；下颌曲面体层指数与颏部指数存在显著相关性（p=0.000，r=0.809）；下颌皮质指数与颏部指数存在显著相关性（p=0.005，r=-0.288）；下颌皮质指数与下颌曲面体层指数存在显著相关性（p=0.000，r=-0.366）。其余所有相关性均无统计学意义（p<0.05）。
结论：本研究结果表明，曲面体层放射形态计量指数可为牙科种植体初期稳定性的术前预估提供参考依据。