摘要
Abstract
Objective To compare clinical success rates of Er∶YAG laser combined with different capping agents for direct pulp capping in primary teeth and evaluate the pain during treatment.Methods A total of 60 teeth of 60 children between the age of 3 and 5 years were selected for this study.All the samples were randomly assigned to the following 4groups (n=1 5):Er∶YAG laser+ MTA,the exposed area was sealed with MTA after Er∶YAG laser for caries removal and cavity preparation;Er∶YAG laser+calcium hydroxide (CH),the treated area was sealed with CH paste after Er∶YAG laser for caries removal;dental handpiece+MTA,the exposed pulp was sealed with MTA after dental handpiece for caries removal;dental handpiece+CH,CH was applied after dental handpiece for caries removal.The depth of cavity preparation was recorded while the child felt painful.At the 3-,6-,12-and 24-month recall examiations,the effect was observed by X-ray.Results The proportion of the depth of cavity preparation (superficial dentin,middle dentin,deep dentin)by handpiece and Er∶YAG laser was 50％,40％,10％ and 0.67％,20％,79.33％,respectively.The two patterns of cavity preparation revealed significant difference (P ＜ 0.05),At the 3-,6-,12-month recall examiations,the success rates of the laser groups were higher than the handpiece groups,while they had no significant difference (P ＞ 0.05).At the 24 months,the success rates of the laser groups were 93.3％.They showed significantly higher success rates than the handpiece groups (P ＜ 0.05).The success rates of handpiece+MTA and handpiece+CH were 80％ (12/15)and 73％ (11/15),which did not reveal any significant difference.Conclusion Er∶YAG laser combined with pulp capping agents can be recommended for direct pulp therapy in primary teeth,and Er∶YAG laser will result in a slight pain,thus the children will be inclined to accept and complete the treatment.The clinical effect of MTA shows no statistical difference compared with CH.关键词
乳牙/Er∶YAG激光/直接盖髓术/矿物三氧化物凝聚体/氢氧化钙Key words
the primary teeth/Er∶YAG laser/direct pulp capping/mineral trioxide aggregate, MTA/calcium hydroxide分类
医药卫生
