直接法与间接法制作复合树脂高强纤维间隙保持器的临床应用比较

Compare the clinical application between the direct and indirect production methods of glass fiber reinforced composite resin space retainer

目的:分析比较两种GFRCR间隙保持器制作方法的临床疗效。方法:乳磨牙缺失需要缺隙保持患儿84例,随机分为两组,分别采用直接法和间接法制作复合树脂高强纤维间隙保持器。记录配戴1、3、6个月后两种方法制作的间隙保持器临床疗效,并对结果进行比较分析。结果:6个月后两组间隙保持器粘结面松动脱落率和纤维丝折断率的差异均无统计学意义(P>0.05);上下颌间隙保持器粘结面松动脱落率差异无统计学意义(P>0.05);上颌牙纤维丝折断率低于下颌牙,差异有统计学意义(P<0.05)。两组间第1、3、6月的临床成功率差异均无统计学意义(P>0.05)。结论:两种GFRCR间隙保持器制作方法椅旁操作简单、短期疗效好,临床医师可根据自身及患者情况进行选择制作,两种方法均值得临床推广应用。但应用于下颌牙列时应考虑咬合情况谨慎选择。

Objective： Observation of the clinical curative effect of the two production methods of glass fiber rein- forced composite resin space maintainer. Method： selected premature shedding of deciduous molar teeth 84 cases in chil- dren, randomly divided into two groups,respectively using the direct and indirect method to make GFRCR-SM.Record the clinical curative effect after1,3,6 months. Result： After 6 months, no differences of the expulsion rate and the broken rate of GFRCR-SM were found between the two groups P 〉0.05） ; also no differences of the expulsion rate between the upper-and lower teeth （P 〉0.05） ; whereas, the broken rate of the upper is lower than the lower teeth, the difference was statistically sig- nificant （P 〈0.05） ：The clinical success rate between the two groups afterl, 3,6months have no statistical significance differ- ences （P 〉0.05）. Conclusion： Two methods have the advantages of the following： the chair-side operation is simple, short- term curative effect is excellent.The clinicians can choose according to the conditions of their own and patients, they are both worthy of popularization and applicationand widely.But the occlusal conditions should be considered carefully when used in the mandibular dentition.