Prabakar Jayashri, John Joseph, Arumugham I Meignana, Kumar R Pradeep, Sakthi D Sri
Department of Public Health Dentistry, Saveetha Dental College, Saveetha Institute of Medical and Technical Science, Saveetha University, Chennai, Tamil Nadu, India.
Contemp Clin Dent. 2018 Jul-Sep;9(3):388-394. doi: 10.4103/ccd.ccd_131_18.
The World Health Organization considers sealing the pit and fissures as a primary preventive measure and is one of the most effective, least invasive means to ensure the complete protection of the occlusal surface from the carious phenomenon. tests play a vital role in providing the necessary information regarding the efficacy of newer brands of sealants in a short period. Therefore, the aim of the present study was to evaluate and compare the viscosity and length of resin tag of conventional and hydrophilic sealant on permanent molars.
Twenty extracted third molars were randomly divided into two groups: Group I: Conventional sealant (Clinpro 3M ESPE) and Group II: Hydrophilic sealant (UltraSeal XT Hydro). Occlusal surfaces of each tooth were pretreated with the acid etchant, and the respective sealants were placed. Both the groups were then subjected to thermocycling and sectioned longitudinally. The sectioned tooth specimens were examined under scanning electron microscope for resin tag length measurements. Viscosities were evaluated using an Anton Paar viscometer. Independent -test was used to compare the difference in mean resin tag length of Group I and Group II sealants.
Viscosity measurements of Group I and Group II were found to be 0.9 mega Pascal (MPa) and 0.7 MPa and the mean resin tag length of Group II (10.03 ± 1.00 μm) was found to be higher than Group I (7.46 ± 0.95 μm) and was found to be significant statistically ( = 0.001).
Based on the results of the present study, it can be concluded that Group II sealant exhibited lower viscosity and formed resin tag of sufficient length than that of Group I sealants. Therefore, hydrophilic sealant showed better results as compared to a conventional sealant.
世界卫生组织将窝沟封闭视为一种主要的预防措施，是确保咬合面完全免受龋病现象侵害的最有效、侵入性最小的手段之一。试验在短期内提供有关新型窝沟封闭剂疗效的必要信息方面发挥着至关重要的作用。因此，本研究的目的是评估和比较传统型和亲水性窝沟封闭剂在恒磨牙上的粘度和树脂突长度。
将20颗拔除的第三磨牙随机分为两组：第一组：传统型窝沟封闭剂（3M ESPE Clinpro）；第二组：亲水性窝沟封闭剂（UltraSeal XT Hydro）。对每颗牙齿的咬合面进行酸蚀预处理，然后放置相应的窝沟封闭剂。两组均进行热循环处理并纵向切片。将切片后的牙齿标本置于扫描电子显微镜下检查以测量树脂突长度。使用安东帕粘度计评估粘度。采用独立样本t检验比较第一组和第二组窝沟封闭剂平均树脂突长度的差异。
第一组和第二组的粘度测量值分别为0.9兆帕斯卡（MPa）和0.7 MPa，发现第二组的平均树脂突长度（10.03±1.00μm）高于第一组（7.46±0.95μm），且具有统计学显著性（P = 0.001）。
基于本研究结果，可以得出结论，第二组窝沟封闭剂的粘度较低，形成的树脂突长度比第一组窝沟封闭剂的长。因此，与传统型窝沟封闭剂相比，亲水性窝沟封闭剂显示出更好的效果。
