Journal of the Korean Association of Oral and Maxillofacial Surgeons

The Korean Association of Oral and Maxillofacial Surgeons (대한구강악안면외과학회)
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SURVIVAL RATE OF THE DENTAL IMPLANTS PLACED IN POSTERIOR MAXILLA WITHOUT SINUS AUGMENTATION

상악동 골이식술 없이 상악 구치부에 식립된 임프란트의 생존율

  • Park, Hye-Won (Department of Implantology, Graduate School of Clinical dentistry, Ewha Womans University) ;
  • Kim, Myung-Rae (Department of Implantology, Graduate School of Clinical dentistry, Ewha Womans University) ;
  • Kim, Sun-Jong (Department of Implantology, Graduate School of Clinical dentistry, Ewha Womans University)
  • 박혜원 (이화여자대학교 임상치의학대학원 임플란트학과) ;
  • 김명래 (이화여자대학교 임상치의학대학원 임플란트학과) ;
  • 김선종 (이화여자대학교 임상치의학대학원 임플란트학과)
  • Published : 2009.06.30
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Abstract

Purpose : The purpose of this study is to evaluate 7-year survival rate of implants placed without bone graft in posterior maxilla and compare the survival rate by the age and gender of patient, length and diameter of implant, region of implant placement, bicortical engagement of fixture, and connection of prosthesis. Material and methods : 78 patients (170 implants) who visited our institution from 2002 to 2007 and were followed up with panoramic view and medical records. Kaplan-Meier survival analysis and Log Rank (Mantel-Cox) test were used. Results and conclusions : A 7-year cumulative survival rate for implants placed in posterior maxilla without sinus graft was 95.3%. The survival rate in men was 91.8%, significantly lower than 98.8% in woman.(p<0.05). However, the survival rate by the length of the implants did not show any significant differences.(p>0.05), while the wide platform implant resulted in 85% survival rate which was statistically lower than 98.5% in regular platform. The posterior maxillary implants engaged bicortically showed 97.6% of 7-year Survival rate, comparing 88.6% in not engaged implants. The survival rate of the single implant was 91.2%, while 98.5% in splinted prosthesis. Therefore, the bicortical engagement of the fixtures and splinted prosthesis may be recommended to get a long-term survival rate in posterior maxilla.

Keywords

References

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