Analysis of effect of local curettage combined with ointment in fistula applying in refractory apical fistula / 中国基层医药

ABSTRACT

Objective To observe the effect of local curettage combined with ointment in fistula applying in refractory apical fistula.Methods 56 cases of patients with refractory apical fistula one month after faultless root cannal therapy divided into group A and B by lottery,with 28 cases in each group.Local curettage combined with ointment in fistula applying in group A,and no processing applying in group B.One year fellow up was given to every patient to compare the effect between the two groups.Results All the 28 cases of patients with refractory apical fistu-la were recovering in three months.The improvement rate was 100%,recovery rate 100%,and the mean time of fistula disappearing was (0.5 ±0.1)months,time of shadow around root tip disappearing (2.5 ±0.7)months.Four cases in group B were improved in three months,three cases in six months and one case in nine months,with two cases recove-ring.The improvement rate was 28.57%,recovery rate was 7.14%,and the mean time of fistula disappearing was (5.0 ±0.7)months,time of shadow around root tip disappearing (9.4 ±1.0)months.The improvement rate in group A was higher than that in group B (χ2 =33.749,P<0.05),recovery rate in group A was higher than that in group B (χ2 =49.727,P<0.05).The mean time of fistula disappearing in group A was shorter than that in group B (t=3.081,P<0.05),mean time of shadow around root tip disappearing in group A was shorter than that in group B (t=5.042,P<0.05).Conclusion It was effective to apply local curettage combined with ointment in fistula applying in refractory apical fistula,and it is worthy of clinical popularization.