关键词: 复合树脂, Ⅴ类洞, 边缘微渗漏, 影响因素

Abstract:

Composite resins are widely used as clinical restoration materials because of good aesthetic properties，easy handling，thermal insulation and better conservation of tooth structures. However，its polymerization shrinkage can lead to the gap between the tooth structure and composite resin called microleakage，which can result in the failure of restorations. Cervical lesions usually have little enamel in ClassⅤ cavities，so it’s more difficult to avoid the microleakage. Microleakage is a complicated process caused by various factors and there are many studies about it reported. Based on literature reviews，this paper summarized the influence factors of microleakage in ClassⅤ composite restorations，hoping to offer some reference and help in clinical treatment.

Key words: composite resin, classⅤ cavities, microleakage, influencing factor