Chinese Journal of Oral Implantology ›› 2021, Vol. 26 ›› Issue (2): 96-101.DOI: 10.12337/zgkqzzxzz.2021.04.004

• Original Articles·Typical Case Analysis • Previous Articles     Next Articles

Preliminary analysis of minimally invasive extraction and ridge preservation in maxillary molar with bone defect corresponding to the sinus floor due to severe periodontal lesions:a case analysis

Wei Ning1, Xu Tao1,2, Hu Wenjie1, Liu Yunsong3   

  1. 1Department of Periodontology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing 100081, China;
    2Department of Emergency, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing 100081;
    3Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing 100081, China
  • Received:2020-11-04 Online:2021-04-10 Published:2021-07-14
  • Contact: Hu Wenjie, Email: huwenjie@pkuss.bjmu.edu.cn, Tel:0086-10-62173402
  • Supported by:
    Peking University Clinical Scientist Program (BMU2019LCKXJ010); Capital Foundation for Clinical Characteristics and Application Research (Z161100000516042); The Capital Medical Development and Research Fund, PRC (2011-4025-04)

Abstract: Maxillary molars with severe periodontal lesions are often accompanied with bone defects even reaching the corresponding maxillary sinus floor. These bone defects will increase the difficulty and risk for implantation after the extraction of maxillary molars. The application of minimally invasive extraction with thorough debridement and site preservation of the maxillary molars can not only maintain the dimensions of alveolar ridge, but also reduce the requirement of sinus floor elevation.This paper illustrates the treatment procedures of implant replacement of a maxillary molar with severe periodontal lesions involving maxillary sinus floor using this technique.Changes of bone conditions were compared and analyzed in order to provide evidence and clinical experience for the management of similar cases.

Key words: Maxillary molar, Atraumatic extraction, Ridge preservation, Dental implant, Maxillary sinus floor