JOURNAL OF SHANGHAI JIAOTONG UNIVERSITY (MEDICAL SCIENCE) ›› 2020, Vol. 40 ›› Issue (10): 1382-1387.doi: 10.3969/j.issn.1674-8115.2020.10.014

• Original article (Clinical research) • Previous Articles     Next Articles

Functional reconstruction of maxillectomy defect with zygomatic implant

LIN Xin-yan1, ZHOU Wen-jie1, WANG Feng2, HUANG Wei2, WANG Zhen3,QU Xing-zhou3#, WU Yi-qun1#   

  1. 1. Department of Second Dental Center, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai 200011, China; 2. Department of Oral Implantology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China; 3. Department of Oral Maxillofacial-Head and Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
  • Online:2020-10-28 Published:2020-11-27
  • Supported by:
    National Key Research and Development Program of China (2017YFB1302904); Clinical Multi-Disciplinary Team Research Program of Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine (2017-1-005).

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Abstract: Objective · To evaluate the outcomes of maxillary reconstruction using zygomatic implant （ZI） technique. Methods · Eligible patients who were treated with maxillary resection and rehabilitated with ZI-supported obturator prostheses were enrolled from January 2013 to December 2019. The survival rate of the ZI, the success rate of the prosthesis, the postoperative complications, the restoration of speech and mastication, and patients' satisfaction on appearance were evaluated to determine the clinical outcomes of this technique. Results · A total of 69 ZIs and 15 conventional dental implants were inserted in 25 patients. Clip-bar, magnetic retainer and Locator? were fabricated for obturator retention. The survival rate of the ZIs was 94.2% （65/69） after a mean follow-up of 3.7 years. Reconstruction prevented the communication between oral cavity and nasopharynx so that speech and mastication function was fully recovered. The patients were satisfied with oral function and appearances after reconstruction. Postoperative complications presented an incidence of 4% （3/69）, including facial fistula and soft tissue hyperplasia around ZI. Conclusion · ZI technique is a feasible treatment to reconstruct the maxillectomy defect with favorable clinical outcomes, providing good facial morphology and functional restoration, which avoids extensive bone grafting and shortens the treatment period.

Key words: zygomatic implant, maxillary defect, reconstruction, survival rate

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