title: Clinical and radiographic evaluation of early loaded narrow-diameter implants: 3 years follow-up.
abstract: OBJECTIVE
  To evaluate the clinical reliability of narrow implants placed in a one-stage procedure and early loaded in the upper and lower incisor region.
  
  
  METHODS
  This is a prospective, single-arm, multicenter study in which patients with missing natural dentition in upper lateral and lower incisor positions were enrolled. Eligible implants (OsseoSpeed™ TX 3.0S, DENTSPLY Implants) were of three different lengths and of 3.0 mm in diameter. One-stage surgery was performed and healing abutment connection took place. Placement of the permanent single crown took place after a 6-10 weeks healing period. Clinical and radiographic checks were performed at implant placement, loading, and at the 6, 12, 24, and 36 months follow-up visits.
  
  
  RESULTS
  A total of 69 subjects with 97 implants have been included in this study. From surgery to 36 months follow-up, 5.6% of the implants showed bone loss of more than 1 mm, while no bone loss at all were observed for 57.3% of the implants. The mean marginal bone level change from surgery to the 6, 12, and 36 months follow-up visits was -0.27, -0.11, and -0.09 mm, respectively. The total survival rate after 3 years is 95.5%.
  
  
  CONCLUSIONS
  The data presented show stable marginal bone levels as well as healthy soft tissue around OsseoSpeed™ TX 3.0S implants, after 3 years of function. An interesting finding from this investigation was that a longer healing period before crown placement and loading contributed to statistically significant less marginal bone loss between loading and the 1-year follow-up visit (Galindo-Moreno et al. 2012). This finding, associated with a stable probing pocket depth and a stable crown-gingiva distance, using a one-stage surgical procedure helps to maintain the integrity of the peri-implant soft tissues. Narrow implants can be considered as a valid solution in the treatment of the localized narrow bony defects in the anterior area with reduced spaces between the natural teeth.
authors: Oral Surgery and Implant Department, Fondazione IRCCS Policlinico Cà Granda, Post Graduate School in Oral Surgery, School of Medicine, University of Milan, Milan, Italy.
authors: Carlo
authors: C
authors: Maiorana
authors: Paul
authors: P
authors: King
authors: Sebastian
authors: S
authors: Quaas
authors: Katarina
authors: K
authors: Sondell
authors: Nils
authors: N
authors: Worsaae
authors: Pablo
authors: P
authors: Galindo-Moreno
mesh_terms: D000328:Adult; D000539:Alveolar Process / Q000000981:diagnostic imaging / Q000601:surgery; D003442:Crowns; D019250:Dental Implants, Single-Tooth; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D057893:Immediate Dental Implant Loading / Q000379:methods*; D007180:Incisor; D008297:Male; D011446:Prospective Studies; D016896:Treatment Outcome
keywords: atrophic ridges; incisor; narrow implant