五种材料修复髓室底穿孔临床疗效的对比研究

Comparative Study of Clinical Effect of Five Restoring Materials on Repair of Perforations of Pulp Floor

目的探讨髓室底穿孔较理想的修复材料。方法将146颗髓室底穿孔患牙随机分为LCH组（22颗）、LCR组（20颗）、HA组（20颗）、LGIC组（38颗）和CPC组（46颗），均先行根管治疗，然后穿孔处分别采用LCH、LCR、HA、LGlC和CPC充填修复，并作永久性充填，所有治疗牙均随访观察18～24月。结果5组疗效差异具有极显著性（P〈O．01），LGIC组和CPC组疗效均明显优于LCH组、HA组和LCR组（P〈0．01），LGIC组和CPC组两者疗效差异无显著性（P〉0，05）；LCH组、HA组和LCR组三者问疗效差异无显著性（P〉0．05）。结论LGIC、CPC是修复髓室底穿孔较理想的修复材料。

Objective To explort a better matreial of repairing perforations of pulp floor. Methods One hundred forty-six teeth with perforations of pulp floor were divided into LCH group（n =22） ,LCR group（n = 20）, HA group（n = 20）, LGIC group（n= 38） and CPC group（n = 46）. All were treated with root canal therapy and the perforations were repaired with light-cured calcium hydroxide, llght-cured composite resin, hydroxylapatite, light-cured glass ionomer cement and calcium phosphate cement . All treated teeth were followed up for 18-24 months. Results The differences of efficiency were statistically signficant among five groups （P〈0.01）. The efficiency both LGIC and CPC groups were all superior to LCH, LCR and HA groups（P〈0.01）,and the differences of efficiency between LGIC and CPC groups was not statistically signficant （P〉 0.05）. The differences of efficiency were not statistically signficant among LCH group, LCR group and HA group（P〉0.05）. Conclusion Calcium phosphate cement and light-cured glass ionomer cement are considered to be a better material for repairing perforation of pulp floor.