title: Lateral Ridge Augmentation with Autogenous Bone Harvested Using Trephine Drills: A Noninvasive Technique.
abstract: OBJECTIVE
  The aim of this pilot study was to evaluate the success rate of a chairside ridge augmentation procedure using bone autografts harvested with trephine drills and placed without the use of screws.
  
  
  METHODS
  Thirty patients were recruited for the study. After the surgical site was anesthetized and a crestal incision was made, an envelope flap was retracted using blunt dissection limited to the graft site, and the periosteum was raised intact and undamaged from the bone. The flap was extended laterally to obtain sufficient space for the bone graft. At the donor site, bone was obtained from the external oblique ridge area. A #5 or #6 trephine drill was used to harvest one or two pieces of bone. The bone blocks were placed inside the envelope flap at the recipient site, which was then sutured and covered with periodontal dressing. Antibiotics, analgesics, and mouthwash were prescribed. Measurements of ridge width were performed using CBCT before and 3 months after surgery. The pre- and post operative results were compared using paired t test.
  
  
  RESULTS
  Pre- and post-operative mean ridge widths were 2.23 ± 0.79 and 5.16 ± 0.68 mm, respectively. The mean increase in width was 2.92 ± 0.89 mm(P < 0.001).
  
  
  CONCLUSIONS
  This non-invasive and simple technique provided an acceptable increase in ridge width. As the sample was small, we recommend further clinical investigation with larger samples to confirm that this technique may be used successfully as an alternative to current invasive augmentation methods.
authors.affiliation: Dental Research Center, Mashhad University of Medical Sciences, Iran.
authors.forename: H R
authors.initials: HR
authors.lastname: Arab
authors.affiliation: Maxillofacial Disease Center, Mashhad University of Medical Sciences, Iran.
authors.forename: A
authors.initials: A
authors.lastname: Moeintaghavi
authors.affiliation: Dental Research Center, Mashhad University of Medical Sciences, Iran.
authors.forename: M
authors.initials: M
authors.lastname: Taheri
authors.affiliation: Dental Material Research Center, Mashhad University of Medical Sciences, Iran.
authors.forename: N
authors.initials: N
authors.lastname: Sargolzaie
authors.affiliation: Dental School, Mashhad University of Medical Sciences, Iran.
authors.forename: D
authors.initials: D
authors.lastname: Aghasizadeh
authors.affiliation: Department of Periodontics, North Khorasan University of Medical Sciences, Bojnurd, Iran.
authors.forename: F
authors.initials: F
authors.lastname: Shiezadeh
keywords: Augmentation; autogenous bone; bone graft; implant