Luo Yan, Lo Edward C M, Fang Daniel T S, Smales Roger J, Wei Stephen H Y
Faculty of Dentistry, The University of Hong Kong.
Am J Dent. 2002 Dec;15(6):403-6.
To evaluate the clinical behavior of a compomer restorative system, Dyract AP, placed in combination with Non-Rinse Conditioner and Prime&Bond NT in permanent posterior teeth.
Fifty Class II and 41 Class I restorations were placed in 39 patients in a dental teaching hospital. The restorations were evaluated directly at baseline and after 6, 12 and 24 months using the modified USPHS-Ryge criteria. Clinical photographs, polyvinylsiloxane impressions and bitewing radiographs of each restoration were taken for indirect assessment.
After 2 years, all 76 restorations were evaluated in situ. Color matching ability and surface characteristics were excellent. A gradual deterioration in marginal discoloration and marginal integrity was noted. The percentages of Alfa scores for each criterion at the 24-month evaluation were: color match 96%, marginal discoloration 50%, marginal integrity 26%, anatomic form 97% and surface texture 95%. Five of the restorations (6%) had experienced partial fracture or recurrent caries. After 6, 12 and 24 months, the net mean occlusal wear values were 18.5 microm, 35.7 microm and 55.9 microm, respectively. There was no statistically significant difference between Class I and II restorations for each criterion (Fisher's exact test, P > 0.05).
评估一种复合体修复系统Dyract AP与免冲洗调理剂和Prime&Bond NT联合应用于恒牙后牙的临床性能。
在一所牙科教学医院，为39例患者进行了50个II类修复体和41个I类修复体的修复。修复体在基线时以及6、12和24个月后直接使用改良的美国公共卫生署-赖格标准进行评估。拍摄每个修复体的临床照片、聚乙烯硅氧烷印模和咬合翼片进行间接评估。
2年后，对所有76个修复体进行了原位评估。颜色匹配能力和表面特征良好。边缘变色和边缘完整性逐渐变差。24个月评估时各标准的阿尔法评分百分比为：颜色匹配96%，边缘变色50%，边缘完整性26%，解剖形态97%，表面质地95%。5个修复体（6%）出现部分折断或继发龋。6、12和24个月后，平均咬合磨损净值分别为18.5微米、35.7微米和55.9微米。I类和II类修复体在各标准上无统计学显著差异（费舍尔精确检验，P>0.05）。
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