间接性树脂嵌体新进展

Update on indirect resin composite inlays

复合树脂材料用于牙科已有20余年历史。这类材料既可用于前牙也可用于后牙。复合树脂发展到今天已经出现了许多专门应用于后牙的修复材料,并已取得满意的临床效果。银汞合金的许多缺点都可以为复合树脂所克服。因此,后牙复合树脂修复已为越来越多的患者和牙科医生所接受。然而,直接充填复合树脂材料仍旧被认为有许多局限性。比如边缘缺陷、面磨损、牙尖变形以及术后的牙髓敏感等。因此,近年来发展了复合树脂的一种新技术——间接性复合树脂嵌体与高嵌体修复技术。它的临床应用在某种程度上克服了上述直接充填树脂的局限性。复合树脂嵌体或高嵌体是作为固体黏固在预备洞型中的一种修复体。这种呈固态的修复体由复合树脂材料采用间接的方法制成,最后再黏固于口内。本文将最近的有关间接性复合树脂嵌体和高嵌体方面的资料进行综述,包括它的临床应用,优缺点以及面临的问题等。

Resin composite restorative materials have been available to the dental profession for more than two decades.These materials are suitable for use both in anterior and posterior teeth.Resin composites have been developed specially for use in posterior teeth with satisfactory clinical trial results.Many disadvantages of amalgam can be overcome by resin composite.As a consequence,posterior resin composite restorations have increased in popularity and are well-accepted by patients and dentists.However,directly-placed posterior composite restorations are still considered to have a number of limitations,such as marginal defects,occlusal wear,cuspal distortion and post-operative sensitivity.Therefore,an improved technique:-resin composite inlay is applied clinically to minimize the above limitations.A resin composite inlay is a restoration which is cemented into a preparation cavity as a solid mass.This solid mass has been fabricated from resin composite with a forme stablished by an indirect procedure.In this paper,update information of resin composite indirect inlay will be given,including its clinical application,advantages and disadvantages as well as problems encountered.