Reis Alessandra, Loguercio Alessandro D
School of Dentistry, Department of Dental Materials and Operative Dentistry-University of Oeste de Santa Catarina, Campus Joaçaba/SC, Brazil.
Oper Dent. 2006 Sep-Oct;31(5):523-9. doi: 10.2341/05-116.
This study compared the clinical performance of a microhybrid resin composite to lined Class V restorations or to those restorations without a flowable resin composite over a 24-month period. Nineteen patients with at least 2 pairs of equivalent cervical erosion/attrition/abfraction lesions, under occlusion, were enrolled in this study. A total of 74 restorations were placed, half for each group (Single-Bond + Filtek-Flow + Filtek Z250 or Single-Bond + Filtek Z250). According to the manufacturers' instructions, 2 calibrated operators placed all restorations. Two other independent examiners evaluated the restorations at baseline and after 24 months, according to the USPHS criteria and modified criteria for color match. The classic alpha score was divided into A1 for "not detectable" and A2 for "slightly discernible" filling. Statistical analysis was conducted using Fisher's exact test (alpha=0.05). For each group, 8 restorations were lost after 24 months (retention rate of 89.2%). All the restorations showed a trend toward dark yellowing after 24 months (color match A2).
本研究比较了一种微混合树脂复合材料用于V类洞衬层修复或不使用可流动树脂复合材料修复时在24个月期间的临床性能。本研究纳入了19例患者，这些患者至少有2对在咬合状态下的等效颈部侵蚀/磨耗/牙体组织丧失性病变。共放置了74个修复体，每组各半（单组分粘结剂+Filtek流动树脂+Filtek Z250或单组分粘结剂+Filtek Z250）。按照制造商的说明，由2名经过校准的操作人员放置所有修复体。另外两名独立检查人员根据美国公共卫生署（USPHS）标准和颜色匹配的改良标准在基线和24个月后对修复体进行评估。经典的α评分分为A1（“不可检测”）和A2（“轻微可辨”）充填。采用Fisher精确检验进行统计分析（α=0.05）。24个月后，每组有8个修复体脱落（保留率为89.2%）。所有修复体在24个月后均呈现暗黄色趋势（颜色匹配A2）。
