title: The use of tapered implants in the maxillae of periodontally susceptible patients: 10-year outcomes.
abstract: OBJECTIVE
  This study is a retrospective assessment of the long-term efficacy of dental implant therapy in periodontally susceptible patients.
  
  
  METHODS
  A private-practice chart review was conducted to identify partially dentate subjects treated with implant-supported restorations that had been monitored annually for at least 9.5 years. Subjects were assigned to either a periodontal group or a control group according to their health histories. Data were entered into spreadsheets on a personal computer and analyzed statistically with dedicated software.
  
  
  RESULTS
  Thirty periodontal subjects were treated with 138 implants and 45 prostheses, and 16 control subjects were treated with 35 implants and 21 prostheses. The mean follow-up was 130 months. One implant failed before loading in the periodontal group. Cumulative 10-year survival rates were 99.3% (n = 137/138) for periodontal implants and 100% (n = 35/35) for control implants. Most surviving implants had no bone loss (n = 109/172, 63.4%). Most of the surviving implants with bone loss (n = 63/172, 36.6%) were concentrated in the periodontal cohort (90%, n = 57/63) and among women (60%, n = 15/25) regardless of cohort. Prosthesis failure was 25.2% (n = 16/66), with 12 porcelain fractures, 2 cement failures, and 2 framework fractures. In all cases, failed prostheses were immediately replaced and patients continued to function.
  
  
  CONCLUSIONS
  Periodontal susceptibility resulted in increased bone loss but did not affect implant survival. The cause of greater bone loss in women could not be determined from the data but may have been related to the postmenopausal status of the subject population (mean age = 54 years).
authors.affiliation: Department of Oral Rehabilitation, Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel. drzeev@ormianer.com
authors.forename: Zeev
authors.initials: Z
authors.lastname: Ormianer
authors.forename: Ady
authors.initials: A
authors.lastname: Patel
mesh_terms: D016301:Alveolar Bone Loss / Q000503:physiopathology; D002908:Chronic Disease; D015331:Cohort Studies; D003738:Dental Cements / Q000737:chemistry; D015921:Dental Implants; D003776:Dental Porcelain / Q000737:chemistry; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D004198:Disease Susceptibility; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007576:Jaw, Edentulous, Partially / Q000534:rehabilitation / Q000601:surgery; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D009910:Oral Hygiene; D010510:Periodontal Diseases / Q000503:physiopathology*; D012189:Retrospective Studies; D012737:Sex Factors; D016019:Survival Analysis; D016896:Treatment Outcome
chemical_list: D003738:Dental Cements; D015921:Dental Implants; D003776:Dental Porcelain