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首页> 外文期刊>ASDC journal of dentistry for children >Clinical evaluation of glass ionomers used as fissure sealants: twenty-four-month results.
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Clinical evaluation of glass ionomers used as fissure sealants: twenty-four-month results.

机译：用作裂缝密封胶的玻璃离聚物的临床评估：二十四个月的结果。

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This study evaluated the twenty-four-month retention and effectiveness in dental caries prevention, of Vitremer and Ketac-Bond glass ionomers used as occlusal sealants. The initial sample consisted of 200 school children ages six to eight years whose permanent first molars were sound. The children were divided into two experimental groups (group 1 Vitremer; group 2 Ketac-Bond) and a control group (group 3 unsealed molars). Statistical analysis (Mann-Whitney test) revealed that there were statistically significant differences between the retention levels of the experimental groups A and B in the three evaluation periods (six-, twelve- and twenty-four-month) with Vitremer showing superior results. As to caries incidence, there was a statistically significant difference (chi 2 test) between the experimental groups (A and B) and the control group indicating that glass ionomers are effective for prevention of caries in the occlusal surfaces. Two independent variables were correlated with the presence of caries or that of a restored tooth after twenty-four months (odds ratio) revealing that children who presented white spots (WS) had a probability of presenting caries or restorations that was 5.0, 3.07 and 1.93 times greater at six, twelve, and twenty-four months, respectively than that of children who did not show WS in the experimental groups A and B and in the control group, respectively. The variable represented by the "dmf" index showed a statistically significant correlation (chi 2 test) in the control group, in which there was a 3.26 times greater probability of children presenting a "dmf" index equal to or greater than 1 in the development of caries or who presented a restored tooth in relation to those who did not have a history of caries ("dmf" = 0).
机译：这项研究评估了用作咬合密封剂的Vitremer和Ketac-Bond玻璃离聚物在二十四个月的保留和预防龋齿的有效性。最初的样本包括200名年龄在6到8岁之间的学龄儿童，他们的第一磨牙是永久性的。将儿童分为两个实验组（第1组Vitremer;第2组Ketac-Bond）和对照组（第3组未密封磨牙）。统计分析（Mann-Whitney检验）显示，在三个评估期（六个月，十二个月和二十四个月）中，实验组A和B的保留水平在统计学上有显着差异，Vitremer显示出更好的结果。至于龋齿的发生率，实验组（A和B）与对照组之间存在统计学上的显着差异（χ2检验），表明玻璃离聚物可有效预防牙合面中的龋齿。两个独立变量与龋齿的存在或二十四个月后的牙齿修复（比值比）相关，表明出现白点（WS）的儿童出现龋齿或修复的可能性为5.0、3.07和1.93分别比实验组A和B和对照组中未表现出WS的儿童分别大6，12和24倍。以“ dmf”指数表示的变量在对照组中显示出统计学上的显着相关性（χ2检验），其中儿童在发育过程中呈现“ dmf”指数等于或大于1的可能性是3.26倍相对于那些没有龋病史的人（“ dmf” = 0），出现龋齿或牙齿修复的人。

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