Int J Stomatol ›› 2021, Vol. 48 ›› Issue (4): 433-438.doi: 10.7518/gjkq.2021076

• Reviews • Previous Articles     Next Articles

The minimally invasive concept and research progress on access cavity design

Peng Weiqi(),Gao Yuan,Xu Xin()   

  1. State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
  • Received:2021-01-08 Revised:2021-04-02 Online:2021-07-01 Published:2021-06-30
  • Contact: Xin Xu;
  • Supported by:
    National Natural Science Foundation of China(81771099);Applied Basic Research Foundation of Sichuan Science and Technology Department(2019YJ0074)


Pulp and periapical diseases are common clinical oral diseases, and root canal therapy is the most effective option for these diseases. Access cavity preparation is the first step of root canal therapy. A well-designed access cavity is crucial to the success of root canal therapy. In recent years, with the concept of minimally invasive endodontics proposed, a minimally invasive improvement of traditional endodontic cavities is recommended, which emphasizes the purposeful preservation of part of the chamber roof and peri-cervical dentin to preserve the healthy tooth tissue as much as possible. Although minimal access cavity designs can reduce the stress concentration in the cervical regions, evidence on its improvement of the fracture resistance of the endodontically treated teeth is lacking. Moreover, minimally invasive access may complicate treatment and increase the difficulty of root canal therapy, which may affect the effect of root canal therapy and increase the prevalence of iatrogenic complications during endodontic procedures. This article reviews the minimally invasive concept of access cavity design and its research progress in the effect of root canal therapy and fracture resistance of teeth.

Key words: minimally invasive endodontics, preservation of tooth structure, endodontic cavity, root canal therapy, fracture resistance

CLC Number: 

  • R781.05

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