Objective To compare the clinical effects of two root canal filling methods in hot gutta-percha filling system.Methods A total of 83 patients with endodontic diseases or periapical diseases were randomly divided into two groups:42 patients in experimental group with 42 teeth (119 root canals) and 41 patients in control group with 41 teeth (111 root canals). In experimental group, continuous wave vertical compaction technique combined with the cold lateral condensation technique were used, while in control group only continuous wave vertical compaction technique was used. Operational errors in treatment were recorded, like gutta-percha pulled out with the heat carrier, or cavities in filled canal, and the success rate of RCT after one year in two groups was compared.Results The gutta-percha points pulled out from root canal by the heat carriers happened 6 times in experimental group and 43 times in control group, with significant statistical difference (P<0.05). The number of proper filled canals was 113 in experimental group and 74 in control group,which had statistical significance (P<0.05). The success rate of RCT after one year was 95.24% and 85.37% respectively in experimental group and in control group, which had no statistical significance (P>0.05). Conclusion The technique of continuous wave vertical compaction combined with cold lateral condensation has less errors and better apex closure, and both root filling techniques could achieve content clinical results. |