title: Long-term stability of early implant placement with contour augmentation.
abstract: In this prospective case series study, 20 patients with an implant-borne single crown following early implant placement with simultaneous contour augmentation were followed for 6 years. Clinical, radiologic, and esthetic parameters were assessed. In addition, cone beam computed tomography (CBCT) was used at 6 years to examine the facial bone wall. During the study period, all 20 implants were successfully integrated, and the clinical parameters remained stable over time. Pleasing esthetic outcomes were noted, as assessed by the pink esthetic scores. None of the implants developed mucosal recession of 1 mm or more. The periapical radiographs yielded stable peri-implant bone levels, with a mean DIB of 0.44 mm at 6 years. The CBCT scans showed that all 20 implants had a detectable facial bone wall at 6 years, with a mean thickness of around 1.9 mm. In summary, this prospective case series study demonstrated stable peri-implant hard and soft tissues for all 20 implants, and pleasing esthetic outcomes overall. The follow-up of 6 years confirmed that the risk for mucosal recession is low with early implant placement. In addition, contour augmentation with guided bone regeneration (GBR) was able to establish and maintain a facial bone wall in all 20 patients.
authors.affiliation: Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Switzerland.
authors.forename: D
authors.initials: D
authors.lastname: Buser
authors.forename: V
authors.initials: V
authors.lastname: Chappuis
authors.forename: U
authors.initials: U
authors.lastname: Kuchler
authors.forename: M M
authors.initials: MM
authors.lastname: Bornstein
authors.forename: J G
authors.initials: JG
authors.lastname: Wittneben
authors.forename: R
authors.initials: R
authors.lastname: Buser
authors.forename: Y
authors.initials: Y
authors.lastname: Cavusoglu
authors.forename: U C
authors.initials: UC
authors.lastname: Belser
mesh_terms: D000328:Adult; D000539:Alveolar Process / Q000000981:diagnostic imaging; D000540:Alveolar Ridge Augmentation / Q000379:methods*; D001861:Bone Regeneration / Q000502:physiology; D018786:Bone Substitutes / Q000627:therapeutic use; D016025:Bone Transplantation / Q000379:methods; D054893:Cone-Beam Computed Tomography / Q000379:methods; D003442:Crowns; D019250:Dental Implants, Single-Tooth; D003774:Dental Plaque Index; D017267:Dental Prosthesis Design; D004955:Esthetics, Dental; D005500:Follow-Up Studies; D005881:Gingiva / Q000473:pathology; D005889:Gingival Recession / Q000145:classification; D016557:Guided Tissue Regeneration, Periodontal / Q000379:methods; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D008137:Longitudinal Studies; D008437:Maxilla / Q000000981:diagnostic imaging / Q000601:surgery; D008567:Membranes, Artificial; D016348:Osseointegration / Q000502:physiology; D010514:Periodontal Pocket / Q000145:classification; D011446:Prospective Studies; D016300:Radiography, Bitewing; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D018786:Bone Substitutes; D008567:Membranes, Artificial
keywords: dental implant; esthetic complication; esthetic outcome; guided bone regeneration; post-extraction implant placement; single-tooth replacement