Journal of Shanghai Jiao Tong University (Medical Science) ›› 2022, Vol. 42 ›› Issue (9): 1353-1360.doi: 10.3969/j.issn.1674-8115.2022.09.024

• Techniques and methods • Previous Articles    

Accuracy of dental implant placement in fully edentulous patients using a dynamic navigation system

TAO Baoxin1(), LAN Kengliang1, HUANG Wei1, WANG Feng2, SHEN Yihan1(), WU Yiqun1()   

  1. 1.Department of Second Dental Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Research Unit of Oral and Maxillofacial Regenerative Medicine, Chinese Academy of Medical Sciences, Shanghai 201999, China
    2.Department of Oral Implantology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Research Unit of Oral and Maxillofacial Regenerative Medicine, Chinese Academy of Medical Sciences, Shanghai 200011, China
  • Received:2022-05-22 Accepted:2022-08-01 Online:2022-09-28 Published:2022-09-28
  • Contact: SHEN Yihan,WU Yiqun E-mail:taobx3314@sjtu.edu.cn;1413313536@qq.com;yiqunwu@hotmail.com
  • Supported by:
    Clinical Research Plan of Shenkang Hospital Development Center(SHDC2020CR3049B);Medical Engineering Cross Research Fund of “Jiao Tong University Star” Program of Shanghai Jiao Tong University(YG2021QN72);Chinese Academy of Medical Sciences Innovation Fund for Medical Sciences(2019-I2M-5-037);Research Discipline Fund from Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine(KQYJXK2020);Huangpu District Industrial Support Fund(XK2020014);Innovative Research Team of High-level Local Universities in Shanghai(SHSMU-ZLCX20212402)

Abstract:

Objective ·To study the accuracy of dental implant placement in fully edentulous patients using a dynamic navigation system. Methods ·Nine fully edentulous patients [8 males and 1 female with the mean age of (48.78±15.25) years old], including 5 maxillae and 4 mandibles, from December 2020 to January 2022, in the Department of Second Dental Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine were included, where 56 implants were placed by a dynamic navigation system and 1 was by freehand. The preoperative plans and the postoperative cone-beam CT were fused, and the entry deviation, exit deviation and angle deviation between the planned and placed dental implants were measured and recorded. According to different jaws, the implants were divided into maxilla and mandible group, and the implants were split into left and right group according to their locations to the midline. The dental implants were classified into anterior and posterior group based on the placed location. The differences of the three deviations between different groups were analyzed by using approximate t test and Mann-Whitney U test. Results ·The median (lower quartile, upper quartile) of entry deviation, exit deviation and angle deviation of dental implants were 1.06 (0.54, 1.54) mm, 1.11 (0.51, 1.56) mm and 3.33° (1.77°, 4.52°), respectively. No significant difference was found in the three deviations, irrespective of the different jaws (maxilla and mandible) (P>0.05) and implant locations (left and right side) (P>0.05). The angle deviation of the anterior implants was significantly higher than that of the posterior implants (P=0.029), but the entry deviation and exit deviation showed no significant difference between the anterior and posterior group (P>0.05). Conclusion ·The dynamic navigation system can achieve acceptable accuracy of dental implant placement in the fully edentulous patients.

Key words: dental implant, dental prosthesis, edentulism, computer-assisted surgery

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