The stability parameters of implants （ITV, ISQ ＆ PTV） according to different sizes of controlled bone defects made in implant osteotomies were analyzed and the correlation among the three kinds of implant stability...The stability parameters of implants （ITV, ISQ ＆ PTV） according to different sizes of controlled bone defects made in implant osteotomies were analyzed and the correlation among the three kinds of implant stability parameters was tested in this study. 45 tapped screw-type dental implants were inserted in three types of implant osteotomies made in 8 fresh-frozen pig femoral bones： Typel - without coronal bone defect, Type2 - with 3 mm coronal bone defects, and Type3 - with 6 mm coronal bone defects. The insertion torque values, ISQ ＆ PTV of implants were measured and analyzed statistically. It is concluded that the circumferential coronal bone defects statistically influence the primary stability of implants; ITV, ISQ and PTV are suitable and available to detect the peri-implant coronal bone defects in 3 mm increments, and ITV and PTV are more sensitive to coronal cortical bone loss. There was a strong correlation between ITV and ISQ.展开更多
目的:利用共振频率分析(resonance frequency analysis,RFA)仪器监测Straumann种植体骨愈合期的稳定性变化,并探讨其影响因素。方法:选择25例牙列缺损患者,共植入Straumann种植体52颗。用RFA仪器分别测量各种植体在种植术当天、术后1、4...目的:利用共振频率分析(resonance frequency analysis,RFA)仪器监测Straumann种植体骨愈合期的稳定性变化,并探讨其影响因素。方法:选择25例牙列缺损患者,共植入Straumann种植体52颗。用RFA仪器分别测量各种植体在种植术当天、术后1、4、6、8、12周的种植体稳定性(ISQ值)。将ISQ值进行通用线性模型的方差分析,采用Minitab软件包进行统计学处理。结果:所有种植体在植入时都取得了良好的初期稳定性。种植术后当天,ISQ平均值为64.39±0.66,术后呈现下降趋势,并在术后第4周下降至最低,而从第4周到第6周出现明显上升。统计学分析表明,种植区和牙槽骨对种植体ISQ值有显著影响(P<0.05),种植体长度、颈部高度对种植体ISQ值无明显影响。术后12周,种植体存活率为100%。结论:种植体稳定性与种植体区位置和牙槽骨类型关系密切,而种植体的长度和颈部高度的影响尚缺乏足够临床证据。展开更多
目的:利用共振频率分析(resonance frequency analysis,RFA)仪器监测经单纯上颌窦内提升(osteotome sinus floor elevation without grafting,OSFE without grafting)植入Strauamnn种植体的早期稳定性,分析上颌窦底剩余牙槽骨高度(resid...目的:利用共振频率分析(resonance frequency analysis,RFA)仪器监测经单纯上颌窦内提升(osteotome sinus floor elevation without grafting,OSFE without grafting)植入Strauamnn种植体的早期稳定性,分析上颌窦底剩余牙槽骨高度(residual bone height,RBH)对RFA结果的影响。方法:采用单纯OSFE方式,对48例牙列缺损患者各植入1颗Straumann SLA宽颈美学种植体(4.8 mm×8 mm)。用RFA仪器分别于手术当天、术后2、4、6、8、12、16、20周测量种植体稳定性,所得参数为种植体稳定系数(implant stability quotient,ISQ)。采用SPSS 17.0软件包对数据进行统计学分析。结果:48颗种植体的存活率为97.9%。所有种植体都获得了良好的初期稳定性。手术当天ISQ值较高,于第2周至第6周逐渐下降,之后逐渐上升,最终达到较高水平。上颌窦底剩余骨高度(residual bone height,RBH)与ISQ值无显著相关性。结论:单纯OSFE方式在上后牙区严重骨量不足情况下仍可获得良好的种植体稳定性。RBH对于种植体的早期稳定性无显著影响。展开更多
目的:利用初始植入扭矩法和间断共振频率分析(resonance frequency analysis,RFA)法检测不同外科术式对老年微创种植牙初期稳定性的影响。方法:选择63名老年上颌前磨牙区后天性牙缺失患者,随机分为常规备洞组,级差备洞组和骨挤压组,在...目的:利用初始植入扭矩法和间断共振频率分析(resonance frequency analysis,RFA)法检测不同外科术式对老年微创种植牙初期稳定性的影响。方法:选择63名老年上颌前磨牙区后天性牙缺失患者,随机分为常规备洞组,级差备洞组和骨挤压组,在种植术后即刻记录87枚种植体旋入扭矩值和种植体稳定系数)(ISQ)值,术后1、2、4、6、8、12W分别记录各组ISQ值。采用单因素方差分析和LSD-t检验分别进行组间、组内比较扭力值和ISQ值统计学差异。结果:在种植术后记录级差备洞组旋入扭矩平均值为:33.28±3.95 N·CM,明显高于常规备洞组扭矩值(P<0.05);术后即刻测量ISQ平均值,和常规备洞组比较,级差备洞组和骨挤压组ISQ值增加明显,术后呈现下降趋势,至4W时下降至最低值,自术后4W到12W时三组ISQ值上升均比较明显,至术后12W时三组ISQ平均值两两比较无统计学差异(P>0.05)。结论:级差备洞和骨挤压技术能够明显提高在老年人Ⅲ类骨上微创非翻瓣植入人工种植体的初期稳定性。展开更多
基金Sponsored by the Scientific Research Foundation for the Returned Overseas Chinese Scholars,Ministry of Education,China
文摘The stability parameters of implants （ITV, ISQ ＆ PTV） according to different sizes of controlled bone defects made in implant osteotomies were analyzed and the correlation among the three kinds of implant stability parameters was tested in this study. 45 tapped screw-type dental implants were inserted in three types of implant osteotomies made in 8 fresh-frozen pig femoral bones： Typel - without coronal bone defect, Type2 - with 3 mm coronal bone defects, and Type3 - with 6 mm coronal bone defects. The insertion torque values, ISQ ＆ PTV of implants were measured and analyzed statistically. It is concluded that the circumferential coronal bone defects statistically influence the primary stability of implants; ITV, ISQ and PTV are suitable and available to detect the peri-implant coronal bone defects in 3 mm increments, and ITV and PTV are more sensitive to coronal cortical bone loss. There was a strong correlation between ITV and ISQ.
文摘目的:利用共振频率分析(resonance frequency analysis,RFA)仪器监测Straumann种植体骨愈合期的稳定性变化,并探讨其影响因素。方法:选择25例牙列缺损患者,共植入Straumann种植体52颗。用RFA仪器分别测量各种植体在种植术当天、术后1、4、6、8、12周的种植体稳定性(ISQ值)。将ISQ值进行通用线性模型的方差分析,采用Minitab软件包进行统计学处理。结果:所有种植体在植入时都取得了良好的初期稳定性。种植术后当天,ISQ平均值为64.39±0.66,术后呈现下降趋势,并在术后第4周下降至最低,而从第4周到第6周出现明显上升。统计学分析表明,种植区和牙槽骨对种植体ISQ值有显著影响(P<0.05),种植体长度、颈部高度对种植体ISQ值无明显影响。术后12周,种植体存活率为100%。结论:种植体稳定性与种植体区位置和牙槽骨类型关系密切,而种植体的长度和颈部高度的影响尚缺乏足够临床证据。
文摘目的:利用共振频率分析(resonance frequency analysis,RFA)仪器监测经单纯上颌窦内提升(osteotome sinus floor elevation without grafting,OSFE without grafting)植入Strauamnn种植体的早期稳定性,分析上颌窦底剩余牙槽骨高度(residual bone height,RBH)对RFA结果的影响。方法:采用单纯OSFE方式,对48例牙列缺损患者各植入1颗Straumann SLA宽颈美学种植体(4.8 mm×8 mm)。用RFA仪器分别于手术当天、术后2、4、6、8、12、16、20周测量种植体稳定性,所得参数为种植体稳定系数(implant stability quotient,ISQ)。采用SPSS 17.0软件包对数据进行统计学分析。结果:48颗种植体的存活率为97.9%。所有种植体都获得了良好的初期稳定性。手术当天ISQ值较高,于第2周至第6周逐渐下降,之后逐渐上升,最终达到较高水平。上颌窦底剩余骨高度(residual bone height,RBH)与ISQ值无显著相关性。结论:单纯OSFE方式在上后牙区严重骨量不足情况下仍可获得良好的种植体稳定性。RBH对于种植体的早期稳定性无显著影响。
文摘目的:利用初始植入扭矩法和间断共振频率分析(resonance frequency analysis,RFA)法检测不同外科术式对老年微创种植牙初期稳定性的影响。方法:选择63名老年上颌前磨牙区后天性牙缺失患者,随机分为常规备洞组,级差备洞组和骨挤压组,在种植术后即刻记录87枚种植体旋入扭矩值和种植体稳定系数)(ISQ)值,术后1、2、4、6、8、12W分别记录各组ISQ值。采用单因素方差分析和LSD-t检验分别进行组间、组内比较扭力值和ISQ值统计学差异。结果:在种植术后记录级差备洞组旋入扭矩平均值为:33.28±3.95 N·CM,明显高于常规备洞组扭矩值(P<0.05);术后即刻测量ISQ平均值,和常规备洞组比较,级差备洞组和骨挤压组ISQ值增加明显,术后呈现下降趋势,至4W时下降至最低值,自术后4W到12W时三组ISQ值上升均比较明显,至术后12W时三组ISQ平均值两两比较无统计学差异(P>0.05)。结论:级差备洞和骨挤压技术能够明显提高在老年人Ⅲ类骨上微创非翻瓣植入人工种植体的初期稳定性。
