Mertz-Fairhurst E J, Adair S M, Sams D R, Curtis J W, Ergle J W, Hawkins K I, Mackert J R, O'Dell N L, Richards E E, Rueggeberg F
Department of Oral Rehabilitation, School of Dentistry, The Medical College of Georgia, Augusta 30912, USA.
ASDC J Dent Child. 1995 Mar-Apr;62(2):97-107.
The objective of this clinical study was to evaluate the long-term efficacy of placing sealed posterior composite restorations for arresting active caries. The tooth preparation for this bonded and sealed restoration was limited to placing a bevel in the enamel only, without the removal of the carious lesion. The radiographic and clinical performance of these ultraconservative sealed composite restorations placed over caries (CompS/C) was compared over a period of nine years with: 1) ultraconservative, localized sealed amalgam (AGS) restorations with no extension for prevention, and 2) traditional, unsealed amalgam restorations (AGU) with the usual extension for prevention outline form. Sealant retention with > 50 percent to 100 percent of the margins occurred in 64 percent of CompS/C and 82.5 percent of AGS restorations. After nine years the cumulative failure rates were 16 percent for CompS/C, 2.5 percent for AGS, and 17.1 percent for AGU restorations. Thus, the clinical performance of CompS/C restorations was slightly superior to that of the traditional AGU restorations. The AGS restorations were definitely superior to the traditional AGU restorations and to the CompS/C restorations in both children and adults alike. Complete sealant retention over CompS/C and AGS restorations was equivalent between children and adults (P = 0.14 and 0.74, respectively). A higher percentage of open margins in CompS/C restorations was seen, however, in children (17.4 percent) than adults (1.94 percent). This study has shown that Class I caries can be arrested by the CompS/C restoration.
这项临床研究的目的是评估放置密封后牙复合树脂修复体以阻止活动性龋病的长期疗效。这种粘结和密封修复体的牙体预备仅限于在釉质上制备一个斜面，而不去除龋损。将这些放置在龋损上的超保守密封复合树脂修复体（CompS/C）的影像学和临床性能与以下情况进行了为期九年的比较：1）无预防性扩展的超保守局部密封银汞合金（AGS）修复体，以及2）具有常规预防性扩展外形的传统非密封银汞合金修复体（AGU）。CompS/C修复体边缘密封剂保留率>50%至100%的情况在64%的病例中出现，AGS修复体为82.5%。九年后，CompS/C修复体的累积失败率为16%，AGS为2.5%，AGU修复体为17.1%。因此，CompS/C修复体的临床性能略优于传统的AGU修复体。AGS修复体在儿童和成人中均明显优于传统的AGU修复体和CompS/C修复体。CompS/C和AGS修复体的完全密封剂保留率在儿童和成人中相当（P值分别为0.14和0.74）。然而，CompS/C修复体中儿童出现开放边缘的比例（17.4%）高于成人（1.94%）。这项研究表明，I类龋病可以通过CompS/C修复体得到控制。
