title: Single implants in the aesthetic region preceded by local ridge augmentation; a 10-year randomized controlled trial.
abstract: OBJECTIVE
  The aim of this randomized controlled trial was to assess the 10-year effects of three different augmentation techniques (augmentation with chin bone, augmentation with chin bone plus a membrane and augmentation with a bone substitute plus a membrane) for implant-supported restorations in the maxillary aesthetic region regarding clinical and radiographic parameters, and patient-centred outcomes.
  
  
  METHODS
  Ninety-three patients requesting single tooth replacement and presenting with a horizontal bone deficiency were included. After augmentation, 93 implants were placed. Clinical variables, standardized radiographs and photographs and patient questionnaires were analysed to assess the impact of the various augmentation techniques 1 month (T1), 12 months (T12) and 120 months (T120) after final crown placement.
  
  
  RESULTS
  10-years implant survival was 95.7% and did not differ between the groups neither were significant differences observed in the other treatment outcomes assessed. Peri-implant bone loss was low, viz. 0.48 ± 1.19 mm (mesial) and 0.30 ± 1.24 mm (distal) at T120. Loss of midbuccal marginal gingival level at T120was 0.32 ± 0.83 mm. Mean overall satisfaction at T120was 8.6 with 98.6% of the patients satisfied.
  
  
  CONCLUSIONS
  Clinical, radiographic, aesthetic and patient centred outcomes were very favourable after 10 years and did not differ between the groups with different bone augmentation techniques.
authors.affiliation: Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
authors.forename: Caroliene M
authors.initials: CM
authors.lastname: Meijndert
authors.affiliation: Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
authors.forename: Gerry M
authors.initials: GM
authors.lastname: Raghoebar
authors.affiliation: Department of Oral and Maxillofacial Surgery, Nij Smellinghe Hospital, Drachten, The Netherlands.
authors.forename: Leo
authors.initials: L
authors.lastname: Meijndert
authors.affiliation: Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
authors.forename: Kees
authors.initials: K
authors.lastname: Stellingsma
authors.affiliation: Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
authors.forename: Arjan
authors.initials: A
authors.lastname: Vissink
authors.affiliation: Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.|Dental School, Department of Fixed and Removable Prosthodontics, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
authors.forename: Henny J A
authors.initials: HJ
authors.lastname: Meijer
mesh_terms: D000328:Adult; D000540:Alveolar Ridge Augmentation / Q000379:methods*; D016025:Bone Transplantation; D003094:Collagen; D019250:Dental Implants, Single-Tooth; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D004955:Esthetics, Dental; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D008903:Minerals
chemical_list: C106416:Bio-Gide; C077540:Bio-Oss; D008903:Minerals; D003094:Collagen
keywords: aesthetics; bone augmentation; dental implant; marginal bone