레진기반 치면열구전색제와 유동성 레진의 교합면 열구내 침투도와 미세누출의 비교

Abstract

In this study, we compared the penetration scores and microleakage levels observed with different methods of application of a flowable resin as a resin-based pit and fissure sealant. Our findings were as follows.

1. The results of comparison of the penetration scores among the test groups revealed that Group 4, which was treated with flowable resin following fissurotomy and subsequent application of a bonding agent, exhibited higher penetration scores compared to Groups 2 and 3, which were also treated with flowable resin (p<0.05).

2. Group 1, treated with a resin-based sealant, displayed significantly higher penetration scores compared to Group 2, which was treated with flowable resin without any bonding agent (p<0.05). However, the penetration score distribution of Group 1 did not differ significantly from those of Groups 3 and 4.

3. The results of comparison of the microleakage levels among the test groups revealed that Group 4 exhibited lower microleakage levels compared to the flowable resin-treated Groups 2 and 3 as well as the resin-based sealant-treated Group 1 (p<0.05).

4. Group 1 as well as Group 3, which was treated with flowable resin following the application of a bonding agent, exhibited lower microleakage levels compared to Group 2, which was treated with flowable resin without any bonding agent (p<0.05). However, the microleakage levels of Groups 1 and 3 did not differ significantly.

5. The results of evaluation by scanning electron microscopy (SEM) revealed that the penetration scores varied according the shapes of the pits and fissures. The application and extent of fissurotomy also resulted in variation of the penetration scores. In the group treated with flowable resin without any bonding agent, close adaptation between the resin and the enamel surface in the pits and fissures was not observed.

In summary, the penetration scores of the group treated with flowable resin following fissurotomy were similar to those of the group treated with a resin-based sealant, but higher compared to those of the other groups treated with flowable resin without fissurotomy or bonding agent. The group treated with flowable resin following fissurotomy also exhibited the lowest microleakage levels. The group treated with resin-based sealant and the one treated with a bonding agent prior to the application of flowable resin showed similar microleakage levels. Therefore, flowable resin may be applied as a pit and fissure sealant, and its application along with fissurotomy could increase the penetration scores.