Durmus Basak, Giray Figen, Peker Sertac, Kargul Betul
Oral Health Prev Dent. 2017;15(2):157-162. doi: 10.3290/j.ohpd.a37927.
To evaluate the efficacy of conventional acid etching alone (acid etching) and Er:YAG laser combined with acid etching (laser + acid etching) on fissure sealant (FS) retention of first permanent molars (FPMs) after 18 months.
Using a split-mouth design in 51 children, a total of 204 FPMs were sealed with acid etching alone or laser plus acid etching (laser+acid). The retention of sealants and occurrence of caries were evaluated at 3, 6, 12, and 18 months. Statistical analysis was performed using Pearson's chi-squared tests.
The retention rate for FS in the laser+acid group was significantly higher than that of the acid-etch group at 12 (p = 0.0161) and 18 (p = 0.0227) months. Six FSs in the acid group and five FSs in the laser+acid group were completely lost after 18 months. The incidence of caries in the acid-etch group was 22% (n = 18) vs 10% (n = 8) in the laser+acid group at 18 months. The difference in caries development between the groups was not significant (p > 0.05).
As enamel pretreatment, Er:YAG laser combined with acid etching significantly improves FS retention over conventional acid etching alone.
评估单纯常规酸蚀（酸蚀）以及铒钇铝石榴石（Er:YAG）激光联合酸蚀（激光+酸蚀）对第一恒磨牙（FPMs）窝沟封闭剂（FS）18个月后的保留率的影响。
对51名儿童采用半口设计，共204颗第一恒磨牙分别采用单纯酸蚀或激光联合酸蚀（激光+酸蚀）进行窝沟封闭。在3、6、12和18个月时评估封闭剂的保留情况和龋齿的发生情况。采用Pearson卡方检验进行统计学分析。
激光+酸蚀组FS在12个月（p = 0.0161）和18个月（p = 0.0227）时的保留率显著高于酸蚀组。18个月后，酸蚀组有6颗FS完全脱落，激光+酸蚀组有5颗FS完全脱落。18个月时，酸蚀组的龋齿发生率为22%（n = 18），激光+酸蚀组为10%（n = 8）。两组间龋齿发展的差异无统计学意义（p>0.05）。
作为牙釉质预处理，Er:YAG激光联合酸蚀比单纯常规酸蚀能显著提高FS的保留率。
