Journal of Korean Dental Science

Korean Academy of Dental Science (대한치의학회)
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Short-term, Multi-center Prospective Clinical Study of Short Implants Measuring Less Than 7mm

  • Kim, Young-Kyun (Department of Oral and Maxillofacial Surgery, Seoul National University Bundang Hospital) ;
  • Yi, Yang-Jin (Department of Prosthodontics, Seoul National University Bundang Hospital) ;
  • Kim, Su-Gwan (Department of Oral and Maxillofacial Surgery, School of Dentistry, Chosun University) ;
  • Cho, Yong-Seok (Apsun Dental Hospital) ;
  • Yang, Choon-Mo (Jeju Yena Dental Clinic) ;
  • Liang, Po-Chin (Hsiao po Dental Clinic) ;
  • Chen, Yu-Yal (Taichung Armed Forces General Hospital) ;
  • I, Lee-Long (Hung Sin Dental Clinic) ;
  • Sim, Christopher (Private Practice, Mt. Elizabeth Dental Surgery) ;
  • Tan, Winston (Private Practice Restricted to Oral & Maxillofacial Surgery) ;
  • Ser, Go Wee (Private Practice, W.S.Go & Associates Dental Surgeons) ;
  • Yue, Deng (Oral & Maxillofacial Surgery, Qingdao Oral Medical Hospital) ;
  • Yi, Man (West China College of Stomatology, Sichuan University) ;
  • Ping, Gong (West China Medical Surgery University)
  • Received : 2010.03.07
  • Accepted : 2010.03.16
  • Published : 2010.06.30
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Abstract

Objective : This prospective study sought to verify the stability of three types of short implants measuring 7mm or less. Materials and methods : Implants measuring 7mm or less were placed in patients at multicenter dental clinics in Korea, China, Taiwan, and Singapore. Initial stability, intraoperative and postoperative complications, crestal bone loss, and survival rate of the implant were prospectively evaluated. Results : The primary stability of a 6-mm implant was lower than that of a 7-mm implant. The marginal bone loss of short implants measuring less than 7mm was minimal. Complications such as wound dehiscence, implant mobility, and peri-implant mucositis developed, and these were associated with initial implant failure. The short-term survival rate of 6-mm implant was 93.7%, and that of 7-mm implant, 96.6%. Conclusion : Short implant for the mandible with insufficient height for the residual ridge can be selectively used. Poor primary stability and wound dehiscence can cause osseointegration failure and alveolar bone loss.

Keywords

References

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