CAD/CAM铣削氧化锆贴面的短期临床观察

2021-01-16 04:55:15丁晨衣颖杰陆伟吴国锋
中国美容医学 2021年12期

丁 晨 衣颖杰 陆 伟 吴国锋

[关键词]氧化锆;CAD/CAM;贴面;粘接

[中图分类号]R783.2    [文献标志码]A    [文章编号]1008-6455(2021)12-0129-04

Short-term Clinical Observation of CAD/CAM Zirconia Veneer Restorations

DING Chen1, YI Ying-jie2, LU Wei2, WU Guo-feng2

(1.Department of Dental Laboratory;2.Department of Prosthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing 210008, Jiangsu,China)

Abstract: Objective To investigate the application of CAD/CAM zirconia veneers in anterior esthetic restorations and observe their short-term clinical outcomes. Methods  Patients received anterior teeth esthetic restorations from September 2018 to September 2019 in Department of Prosthodontics, Nanjing Stomatological Hospital were randomly divided into two groups: observation group (7 patients, 29 affected teeth) and control group (8 patients, 32 affected teeth). CAD/CAM zirconia veneers were applied in the observation group, and patients in the control group received CAD/CAM ceramic veneers. Clinical parameters regarding esthetic restoration of anterior teeth and satisfaction evaluation of patients were compared. Results  The reliability, fit, gingival health parameters and patients’satisfaction rate revealed no statistical difference between the observation and the control groups. Conclusion  CAD/CAM zirconia veneers can meet the clinical requirements of anterior esthetic veneers restorations.

Key words: zirconia; CAD/CAM; veneers; adhesion

前牙區大范围的牙体缺损或根管治疗后的前牙修复,可根据剩余牙体组织多寡、能否承受咬合力等因素选择全冠或桩核冠修复。而对于存在微小牙体缺损、牙齿排列稀疏、轻微牙齿扭转、色形不佳等问题的前牙,贴面修复以其磨牙量少,美观效果好等优势成为修复医师的首选。在早期修复严重变色牙的临床应用中,树脂贴面以其操作工序简单的特点,曾取得了不错的效果[1-2]。随着修复材料的发展和人们对美观要求的提高,强度更高、更接近天然牙色泽的瓷贴面逐渐成为前牙区美学修复更好的选择[3-4]。玻璃陶瓷因其色泽逼真,美观效果好而被广泛应用于前牙区贴面修复中,但因其遮色能力差,对于重度变色牙的修复效果不佳。氧化锆材料具有强度高、遮色效果好等优点,但因其不能被氢氟酸酸蚀,粘接效果不及玻璃陶瓷,在全瓷贴面修复中的应用受到了限制。大量文献表明含磷酸酯单体的树脂水门汀可以增强氧化锆全瓷材料的粘接性能[5-6]。CAD/CAM技术在口腔修复领域的应用已十分广泛,CAD/CAM铣削超薄瓷贴面也使前牙美学修复更加微创、快速[7]。本研究采用CAD/CAM铣削氧化锆全瓷贴面用于前牙美学修复,比较其与玻璃陶瓷贴面在修复效果中的差异。

1  资料和方法

1.1 一般资料:选择南京市口腔医院修复科2018年9月-2019年9月就诊的前牙贴面修复患者为研究对象,随机选取7例CAD/CAM铣削氧化锆贴面患者作为观察组,同时选取8例CAD/CAM铣削玻璃陶瓷贴面修复患者作为对照组。……

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