Int J Stomatol ›› 2021, Vol. 48 ›› Issue (5): 497-505.doi: 10.7518/gjkq.2021097

• Expert Forum •     Next Articles

Research progress and clinical application of inlays and onlays

Wang Jian()   

  1. State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
  • Received:2020-04-06 Revised:2021-06-10 Online:2021-09-01 Published:2021-09-10
  • Supported by:
    National Natural Science Foundation of China(81970985);National Natural Science Foundation of China(81771122)

Abstract:

A full crown is one of the most widely used restorations for defects in molars. However, the strength of the prepared tooth is compromised because of the large extent of tooth cutting during crown preparation. With the development of bonding technology and mini-invasive restoration, inlays and onlays have become the most popular restorations for defect in molars because the extent of tooth cutting is less than that of crown. This article reviews the mate-rials, indications, advantages, preparation key points, and bonding techniques to provide recommendations for clinical practice.

Key words: tooth defect, inlay, onlay, tooth preparation, adhesion

CLC Number: 

  • R783.3

TrendMD: 

Fig 1

Different forms of inlays"

Fig 2

The schemetic diagram of stress distribution after inlay (left and middle) or onlay (right) restoration"

Tab 1

Summary of different repair schemes for defects"

缺损情况 活髓牙 根管治疗后的牙齿
??面洞 充填修复或嵌体修复 存在双侧边缘嵴,且壁厚度大于2 mm:充填修复或嵌体修复
洞壁厚度不足:高嵌体
近中-??面、??面-远中洞型 边缘嵴缺失一侧附近有良好支持的牙尖(2.5~3 mm):嵌体
边缘嵴缺失一侧牙尖残留底部厚度不足(2 mm):高嵌体
牙尖底部厚度大于3 mm,可用简单嵌体修复
牙尖底部厚度不足3 mm:高嵌体
MOD洞型 各面厚度都很充足(4~6 mm):嵌体(很少见)
一侧1个或2个牙尖(近中尖或远中尖)厚度不足:高嵌体
2个或多个残留牙尖厚度不足:超嵌体
超嵌体
冠部大量牙体组织缺损 根管治疗后桩核冠修复 桩核冠
釉质大面积受损 全冠 全冠或桩核冠
??龈高度不足3 mm 根管治疗后髓腔固位冠修复 髓腔固位冠

Fig 3

The tooth preparation procedure of onlay"

Fig 4

The adhesion procedure of onlay"

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