title: The outcome of oral implants placed in bone with limited bucco-oral dimensions: a 3-year follow-up study.
abstract: OBJECTIVE
  The dimension of the alveolar bone reduces significantly after tooth loss. Clinicians consider a 1-2 mm buccal and lingual bone width mandatory around the implant at placement. This prospective study analysed the outcome of implants inserted in jaws with narrow (≤4.5 mm) buccal bone dimensions.
  
  
  METHODS
  Twenty-eight patients (mean age 63, 89% female) with a narrow alveolar crest (≤4.5 mm in width on CBCT) received 100 implants (3.5 mm) via a two-stage procedure. Intra-oral radiographs were taken at placement, functional loading and after 1, 2 and 3-years of follow-up. Peri-implant bone level alterations were recorded by two calibrated, periodontologists.
  
  
  RESULTS
  All implants integrated and the cumulative survival rate after 3 years was 100%. The implants were inserted 0.81 mm ± 0.83 subcrestal. At functional loading the bone was located 0.65 mm ± 0.6 apical of the implant shoulder. During 3 years of loading the amount of annual marginal bone loss was 0.17 ± 0.4, 0.05 ± 0.4 and - 0.06 ± 0.1 mm, respectively.
  
  
  CONCLUSIONS
  Based on these data and within the limitations of this study it became clear that implants, placed in sites with limited dimensions (≤4.5 mm width), showed minimal amounts of marginal bone loss during the first 3 years of functional loading.
authors: Department of Oral Health Sciences, Section of Periodontology, KU Leuven - Catholic University of Leuven, Leuven, Belgium; Department of Periodontology, University Hospitals Leuven, Leuven, Belgium.
authors: Andy
authors: A
authors: Temmerman
authors: Johan A J
authors: JA
authors: Keestra
authors: Wim
authors: W
authors: Coucke
authors: Wim
authors: W
authors: Teughels
authors: Marc
authors: M
authors: Quirynen
mesh_terms: D000328:Adult; D000368:Aged; D016301:Alveolar Bone Loss / Q000145:classification; D000539:Alveolar Process / Q000000981:diagnostic imaging* / Q000601:surgery; D000069343:Bone-Implant Interface / Q000000981:diagnostic imaging; D054893:Cone-Beam Computed Tomography / Q000379:methods; D003758:Dental Implantation, Endosseous / Q000379:methods*; D015921:Dental Implants; D017267:Dental Prosthesis Design; D005260:Female; D005500:Follow-Up Studies; D016557:Guided Tissue Regeneration, Periodontal / Q000379:methods; D006801:Humans; D008297:Male; D008334:Mandible / Q000000981:diagnostic imaging / Q000601:surgery; D008437:Maxilla / Q000000981:diagnostic imaging / Q000601:surgery; D008875:Middle Aged; D061330:Multidetector Computed Tomography / Q000379:methods; D016348:Osseointegration / Q000502:physiology; D059745:Piezosurgery / Q000379:methods; D011446:Prospective Studies; D016019:Survival Analysis; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants
keywords: alveolar bone; bone dimension; bone regeneration; buccal bone; dehiscence; dental implants; marginal bone loss; narrow crest; osseointegration