title: Surgical protocol and short-term clinical outcome of immediate placement in molar extraction sockets using a wide body implant.
abstract: OBJECTIVE
  Implant placement in molar extraction sockets can be difficult due to complex multi-root anatomy and the lack of predictable primary stability. The aim of this study was to evaluate the outcome of an 8 - 9 mm diameter tapered implant, designed to be placed in molar extraction sockets.
  
  
  METHODS
  Patients treated at least 1 year before with a Max(®) implant (Southern Implants, Irene, South Africa) were invited for a clinical examination. Variables collected were surgical and prosthetic protocol, implant dimension and smoking habits. Peri-implant bone level was determined on peri-apical radiographs and compared to baseline, being implant insertion.
  
  
  RESULTS
  98 implants had been placed in 89 patients. One implant had failed. Thirty eight patients representing 47 implants (maxilla 26, mandible 21) were available for clinical examination. Mean bone loss was 0.38 mm (SD 0.48; range - 0.50 - 1.95) after a mean follow-up of 20 months (range 12 - 35). Implant success was 97.9%. Around 30 implants, a bone substitute was used to fill the residual space, but this did not affect the bone loss outcome. Bone loss was only significantly different between maxilla and mandible (0.48 mm vs. 0.27 mm) and between the 8 and 9 mm diameter implants (0.23 mm vs. 0.55 mm). A full papilla was present at 71% of the interproximal sites and irrespective of bone loss.
  
  
  CONCLUSIONS
  The Max(®) implant demonstrated good primary stability, when placed in molar extraction sockets, with limited bone loss over time.
authors.affiliation: Department of Periodontology and Oral Implantology, Dental School, Faculty of Medicine and Health Sciences, University of Ghent Ghent Belgium. ; Department of Prosthetic Dentistry, Malmö University Malmö Sweden.
authors.forename: Stefan
authors.initials: S
authors.lastname: Vandeweghe
authors.affiliation: Private Practice for Periodontology and Oral Implantology Sevenoaks United Kingdom.
authors.forename: André
authors.initials: A
authors.lastname: Hattingh
authors.affiliation: Department of Prosthetic Dentistry, Malmö University Malmö Sweden.
authors.forename: Ann
authors.initials: A
authors.lastname: Wennerberg
authors.affiliation: Department of Periodontology and Oral Implantology, Dental School, Faculty of Medicine and Health Sciences, University of Ghent Ghent Belgium. ; Department of Prosthetic Dentistry, Malmö University Malmö Sweden.
authors.forename: Hugo De
authors.initials: HD
authors.lastname: Bruyn
keywords: bone grafting.; dental implants; endosseous dental implantation; implant-supported dental prosthesis; single-tooth dental implants; tooth socket