Farag A, van der Sanden W J M, Abdelwahab H, Mulder J, Frencken J E
Department of Conservative Dentistry, Minia University, Minia City, Egypt.
J Dent. 2009 Jun;37(6):468-74. doi: 10.1016/j.jdent.2009.03.002. Epub 2009 Apr 1.
The null-hypothesis tested was that there is no difference between the survival of ART restorations with, and without, cavity disinfection among adolescents after 5 years.
Eligible students were allocated to one of the treatment groups. One operator placed a total of 90 restorations, 45 each per treatment group, in ninety 14-15 year olds. Restorations were evaluated on replica models at baseline and after 1 and 5 years, by two calibrated and independent evaluators using the ART criteria. The independent variables were gender, mean DMFT score at baseline, cavity size (small/large), cavity type (single-/multiple surfaces) and disinfected cavity (yes/no). Statistical analyses were done using the Kaplan-Meier method and log-rank test.
The cumulative survival percentage and standard error for the 61 ART restorations with and without disinfection at evaluation year 5 were 85% (S.E.=6.1%) and 80% (S.E.=7.1%), respectively: not significantly different (p=0.37) from each other. The cumulative survival percentage and standard error for all ART restorations was 97% (S.E.=2.0%) at evaluation year 1 and 82% (S.E.=4.7%) at year 5, and it was 85% (S.E.=5.4%) for single- and 77% (S.E.=9%) for multiple-surface ART restorations at year 5. The cumulative survival percentage of all ART restorations at evaluation year 5 was statistically significant higher for boys than for girls (p=0.03).
Disinfecting a cavity cleaned according to ART with a 2% chlorhexidine solution is unnecessary. It is useful to introduce the ART approach systematically into the healthcare system in Egypt.
所检验的零假设是，青少年中经过窝洞消毒和未经过窝洞消毒的非创伤性修复治疗（ART）修复体在5年后的存留情况没有差异。
符合条件的学生被分配到其中一个治疗组。一名操作人员在90名14 - 15岁青少年中总共放置了90个修复体，每个治疗组各45个。在基线以及1年和5年后，由两名经过校准且独立的评估人员使用ART标准在复制模型上对修复体进行评估。自变量包括性别、基线时的平均龋失补指数（DMFT）得分、窝洞大小（小/大）、窝洞类型（单面/多面）以及窝洞是否消毒（是/否）。使用Kaplan - Meier方法和对数秩检验进行统计分析。
在评估的第5年，61个经过和未经过消毒的ART修复体的累积存留百分比及标准误分别为85%（标准误 = 6.1%）和80%（标准误 = 7.1%）：二者之间无显著差异（p = 0.37）。所有ART修复体在评估第1年的累积存留百分比及标准误为97%（标准误 = 2.0%），在第5年为82%（标准误 = 4.7%），第5年时单面ART修复体的累积存留百分比为85%（标准误 = 5.4%），多面ART修复体为77%（标准误 = 9%）。在评估第5年，所有ART修复体的累积存留百分比在统计学上男孩显著高于女孩（p = 0.03）。
用2%氯己定溶液对按ART方法清洁后的窝洞进行消毒没有必要。将ART方法系统引入埃及的医疗保健系统是有益的。
