Implant Survival after Preparation of the Implant Site Using a Single Bur: A Case Series

Raphaèl Bettach, Silvio Taschieri, Gilles Boukhris, Massimo Del Fabbro

Research output: Contribution to journalArticlepeer-review


Background: Implant site preparation usually consists of several consecutive drilling steps, performed using different burs with increasing diameter. Purpose: The purpose of the present study was to report the clinical outcomes of edentulous patients that underwent implant treatment, in which a special bur that allows preparation of the implant site in a single drilling step was used. Material and Methods: One hundred forty-nine patients (79 males, 70 females, mean age 51.8±12.2 [SD] years, range 20-80 years) have been rehabilitated using different oral surgery procedures. A total of 350 implants were inserted (171 in the maxilla and 179 in the mandible). A barrier membrane was used for covering a total of 126 implants. Fifteen implants were placed by using the osteotome technique and 52 by using the lateral sinus lift procedure. Eighty-nine implants were placed in postextraction sockets. Thirty-six implants underwent immediate loading. Implant survival, peri-implant bone level change, and patients' satisfaction were the main variables assessed. Results: No patient dropout occurred. The mean follow-up on a patient basis was 21.5±3.1 months (range 12-27 months). A total of seven implant failures were recorded in six patients, leading to a mean implant survival of 98.0% (96.0% on a patient basis). The mean peri-implant bone loss after 1 year was 0.58±0.44mm (n=282). Apart from implant failures, no biological nor mechanical complications occurred. All patients demonstrated full satisfaction. Conclusions: The use of a single bur for implant site preparation allows the reduction of the time needed for the surgical procedure, without compromising the clinical outcomes. Further, long-term comparative studies are needed to confirm the results of this study.

Original languageEnglish
JournalClinical Implant Dentistry and Related Research
Publication statusAccepted/In press - 2013


  • Dental implants
  • Implant site preparation
  • Implant survival
  • Surgical drills

ASJC Scopus subject areas

  • Oral Surgery
  • Dentistry(all)


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