Abstract:

BACKGROUND: The traditional treatment for early pit and fissure caries on permanent teeth is to remove caries tissue and prepare the cavity according to class Ⅰ, but which will cause the excessive loss of tooth substance.
OBJECTIVE: To review the clinical effect of flowable nano-composite resin on repairing early pit and fissure caries with minimally invasive dentistry technique.
METHODS: A total of 206 permanent molars with occlusal pit and fissure caries in 167 patients who aged from 14 to 30 years were included. After unilateral cariated tissue had been removed, the cavity was treated with Adper Single Bond 2 total-etching adhesive method, and the whole cavity was filled with Filtek ^TM Z350 flowable nano-composite resin with minimally invasive dentistry technique and as experimental group. The opposite or adjacent teeth with similar caries in the same patients were treated with Filtek ^TM Z350 nano-resin as control group.
RESULTS AND CONCLUSION: All the patients were followed up for 2 years. In the experimental group, the Filtek TM Z350 flowable nano-composite resin exhibited higher retention rate, better marginal integrity and lower marginal discoloration than those of the control group (P < 0.05). These findings suggest that Filtek ^TM Z350 flowable nano-composite resin can effectively repair early pit and fissure caries with minimally invasive dentistry technique.