Clinical research of Er∶ YAG laser in the removal of root caries in the elderly

YAN Xiao-qin; DUAN Yi-feng; JIA Chun-mei; QIAO Xiao; CAI Qiao-yin

doi:10.3969/j.issn.1672-2973.2016.05.004

Abstract：Objective:Er∶ YAG laser and high speed turbine were used to deal with root caries in the elderly.Observe the intraoperafive pain response,of elderly patients,the time of caries removal and postoperative filling effect.Methods:A total of 20 patients with 52 teeth were selected.Then all teeth were randomly divided into 2 groups,caries were removed by Er∶ YAG laser and high speed turbine emery needle,respectively,After the caries removal,the cavity was filled with GIC,and recorded the time of caries removal and intraoperative pain degree by the two methods,and proceeded analysis and evaluation about the tooth allergy feeling three month after operation,the situation of obturator edge coloring and the edge seal six month after operation.Results:The time of caries removal in Er∶ YAG laser group and high speed turbine emery needle group is(394.8±27.92)s and(132.1 ±8.438)s,respectively.The time in the two groups have significant difference (P＜0.01).The pian in Er∶ YAG laser group is significant lower than high speed turbine emery needle group,and differences are statistically significant (P=0.0026).A month after operation and the re-examination shows:there is no spontaneous pain occurred and there is no significant difference of the symptom of hypersensitive dentin in two groups(P=0.159).Six months after operation,there is no significant difference about the obturator edge coloring(P=0.638),the edge seal(P=0.149) and GIC wear(P=0.685).Conclusions:The pian of Er∶ YAG laser group in the process of removal caries is significant lower than high speed turbine emery needle group,but the time is longer.The short-term effects of the two groups after filling have no significant difference.