Clinical curative effects of the same taper root canal obturated with different gutta percha cones

Objective To compare the clinical efficacy of the same taper root canal obturated therapy between 0.02 tapered and 0.06 tapered gutta percha.Methods Eighty patients with pulpitis or periapical diseases treated in our hospital were randomly divided into two groups,whose teeth were filled by 0.02 tapered(group A)and 0.06 tapered gutta percha(group B),respectively.The obturation time,outcomes and recovery rate(at postoperative 3 months,6 months and one year follow-ups) were recorded and compared.Preoperative and postoperative radiographs of each tooth were taken.Results There were 58 root canals which were suitable filled,2 over-filled and 2 under-filled in group A;there were 68 root canals which were suitable filled,one over-filled and 2 under-filled in group B.The average obturation time per canal was(145.9±14.3)s in group A and(95.6±17.8)s in group B(P0.05).Conclusion There is no significant difference on clinical outcomes between 0.02 tapered and 0.06 tapered gutta percha.However,the 0.06 tapered gutta percha have shorter obturation time and is easy to operate,which is suitable for clinical application.