摘要
目的 对286颗用于前牙内收的上颌微种植支抗钉植入后的松动率进行总结,探讨垂直骨面型与微种植钉植入后的稳定性关系.方法 对植入于143例患者上颌后牙牙槽嵴区的286颗自攻型微种植钉的松动率进行分析,比较不同年龄组内高角组和非高角组的种植钉初次植入的松动率及其差异,此外还分析了双侧种植钉同时松动以及种植钉再植后再次松动的情况,采用SPSS15.0统计软件包进行x2检验或Fisher确切概率法.结果 286颗种植钉初次植入后的平均松动率为17.5%,其中儿童高角组松动率（30.6%）高于非高角组（16.7%）,P＜0.05;成人高角组松动率（21.1%）亦高于非高角组（6.4%）,P＜0.05.两年龄组组内高角组和非高角组的双侧种植钉松动率差异均无统计学意义,其中儿童高角组双侧种植钉同时松动率为12.9%,高于非高角组的5.6%;成人高角组双侧种植钉同时松动率为5.2%,非高角组无双侧种植钉同时松动.儿童高角组再植松动率为47.4%,高于非高角组的38.9%;成人高角组再植松动率为50%,高于非高角组的20%,但两年龄组组内高角组和非高角组再植种植钉的松动率差异均无统计学意义.结论 本研究中微种植支抗初次植入的平均松动率为17.5%,患者垂直面型与微种植钉稳定性有明显关系,高角病例微种植钉松动概率远大于非高角病例.
Objective To investigate the relationship between the vertical craniofacial pattern and the stability of micro-screw anchorage. Methods The failure rate of 286 self-drilling microscrews placed in the posterior region of the maxilla for anterior tooth retraction was analyzed. All 143 cases were sorted into high angle group and non-high angle group by FMA, as well as children group and adult group by age. The difference of failure rates was compared between high angle group and non-high angle group. Besides, the incidence of failure in both sides of one patient and the failure rates of re-implanted micro screws were also compared between high angle group and non-high angle group.The data were analyzed by chi-square or Fisher exact probability test with SPSS 15.0 software package. Results The average failure rate of 286 micro-implants was 17.5%. The failure rates were 30.6% in children high angle group, 16.7% in children non-high angle group, 21.1% in adult high angle group and 6.4% in adult non-high angle group, respectively. Both had significant difference between vertical craniofacial groups. The failure rates were 12.9% in both sides in children high angle group, 5.6% in children non-high angle group, 5.2% in adult high angle group and 0 in adult nonhigh angle group, respectively. No significant difference between vertical craniofacial groups was found. The failure rates of re-implanted micro screws were 47.4% in children high angle group and 38.9% in children non-high angle group, 50% in adult high angle group and 20% in adult non-high angle group, respectively. No significant difference between vertical craniofacial groups was found.Conclusions The average failure rate of 286 self-drilling micro-implants was 17.5%. There was significant relationship between the stability of micro-screw implants and vertical craniofacial pattern.
出处
《中华口腔正畸学杂志》
2010年第2期66-69,共4页
Chinese Journal of Orthodontics
关键词
种植支抗
自攻型
松动率
垂直面型
Micro-screw anchorage
Self-drilling
Failure rate
Craniofacial pattern
