2种粘接剂粘接托槽首次脱落率的临床评价

目的比较树脂类Grengloo粘接剂和玻璃离子类GC Fuji LC粘接剂粘接托槽的首次脱落率。方法固定正畸病例96例,采用自身对照法在口内左右侧随机使用Grengloo和GC粘接剂粘接托槽,记录托槽首次脱落情况。结果两种粘接剂托槽的总体首次脱落率Grengloo组高于GC组,差异有统计学意义（χ2=11.269,P=0.001）。组内比较：Grengloo组（χ2=76.816,P〈0.001）和GC组（χ2=48.538,P〈0.001）上颌、下颌颊面管脱落率的差异均有统计学意义,下颌均高于上颌;Grengloo组（χ2=11.045,P=0.010）、GC组（χ2=4.485,P=0.034）下颌前磨牙脱落率均高于上颌前磨牙,差异有统计学意义。组间比较：下颌颊面管脱落率GC组低于Grengloo组,差异有统计学意义（χ2=9.757,P=0.002）。其他组内组间比较差异均无统计学意义。结论下牙托槽的粘接脱落率较上牙高,尤其在磨牙区;GC与Grengloo粘接剂都能够满足临床粘接需要,GC粘接剂尤其适合后牙区托槽粘接。

Clinical evaluation of the first shedding rate between Grengloo and GC Fuji LC adhesive

Objective To compare the shedding rate between Grengloo bonding agent and GC Fuji Ortho LC for the first time. Methods Ninty-six cases of fixed orthodontic were selected, using Grengloo and GC adhesive bonding braces in left and right side with the self-contrasted method randomly and the number of the shedding braces were recorded. Re- suits The total first shedding rate between two kinds of bonding agent braces was statistically different, GC group was better than that of Grengloo （χ2 = 11. 269, P = 11. 269）. Group comparison ： mandibular molar toss rate were higher than that of maxillary molar in Grengloo group （χ2 = 76. 816, P = 0. 001 ） and the GC group （χ2 = 48. 538, P 〈 0. 001 ）. Mandibular premolar loss rate were higher than that of maxillary premolar in Grengloo groups （χ2 = 11. 045, P 〈0.001 ） and the GC group （χ2=4. 485, P 〈0. 001）. Comparison between groups： mandibular molar loss rate GC below Grengloo group, there were significant differences （χ2 = 9. 757, P =0. 002）. Comparison between other groups in the group had no statistical difference, Conclusion Mandible shedding rate is high, especially in the molar area, GC dope and Greng- loo adhesive can meet the needs of the clinical bonding and GC adhesive is especially suitable for mandible molar.