Official Journal of The Academy of Osseointegration
Survival Rate of One-Piece Dental Implants Placed with a Flapless or Flap Protocol—A Randomized, Controlled Study: 12-Month Results
Stuart J. Froum, DDS/Sang Choon Cho, DDS/Nicholas Elian, DDS/George Romanos, DDS, Dr Med Dent, PhD/Ziad Jalbout, DDS/Mazen Natour, DMD, MScD/Robert Norman, PhD/Dinah Neri, MD, CCRC/Dennis P. Tarnow, DDS
PMID: 22140661
DOI: 10.11607/prd.00.1018
The purpose of this randomized controlled clinical study was to compare the survival of a one-piece anodically oxidized surface implant when placed with a flapless or flap protocol. Bone loss measurements on radiographs and changes in clinical probing depths 1 year post–definitive restoration placement were recorded and compared. Fifty-two of 60 patients (implants) remained in the study at the 1-year follow-up. At the time of final evaluation, no implant was lost in either group. At the time of placement of the definitive restoration, there was a mean mesial and distal bone gain in both groups compared to bone levels present at the time of implant insertion. There were no significant changes in bone levels between placement of the definitive restoration and those recorded 12 months later, and no significant differences in bone levels between the flap or flapless group at 6 or 12 months were noted. No significant differences were seen either in pocket depth or change in pocket depth at 6 and 12 months in the flapless and flap groups. It was therefore concluded that one-piece anodically oxidized surface implants, 1 year post–definitive restoration insertion, had high survival rates (100%) and stable marginal bone and probing depth levels whether a flapless or flap protocol was used for implant insertion. (Int J Periodontics Restorative Dent 2011;31:591–601.)
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