两种材料修复比格犬髓室底穿孔的效果评价

目的:评价MTA和光固化氢氧化钙修复比格犬牙齿髓室底穿孔的效果.方法:3只成年比格犬的36颗前磨牙根管治疗后做髓室底穿孔模型,随机分为两组,分别采用MTA和光固化氢氧化钙修复穿孔.另外24颗磨牙根管治疗后随机分为阳性和阴性对照组,阳性对照组做髓室底穿孔模型后以聚氯乙烯膜覆盖穿孔,阴性对照组不穿孔.分别于术后1,4,12...

Evaluation of furcation perforation repair by MTA and Cav-Hycal in beagle dog

Objective To investigate the effect of MTA and Cav-Hycal for the repair of beagle dogs′furcation perforations.Methods Thirty-six premolars of three adult beagle dogs with the root canals filled were randomly divided into two groups.Furcation perforations were made and repaired with either MTA or Cav-Hycal.Twenty-four molars served as the positive and negative contros.Furcation perforations were made and covered with polyvinychlorid in positive control and no furcation perforations were made in negative control.The periodontal status were evaluated 1,4 and 12 weeks after treatment.Results At one week,all experimental teeth showed normal.At 4 weeks,minor to severe bone loss were observed in the two experimental groups.The teeth in positive group showed periodontal pockets with severe bone loss.At 12 weeks,the bone defects were entirely or partly repaired in 12 cases of either MTA or Cav-Hycal group with no periodontal pockets.The bone defects in the positive control group became bigger and the periodontal pockets became deeper.The teeth in negative control group showed nomal.There was no significant difference between MTA and Cav-Hycal group(P>0.05).Conclusion The effect of MTA and Cav-Hycal on the repair of furcation perforations in beagle dogs was similar.