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Ridge Preservation Comparing a Flap versus a Flapless Technique When Using a Facial Overlay Contour Graft
Thursday, March 16 / 12:10-12:20pm / Monitor 1

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Ridge Preservation Comparing a Flap vs. a Flapless Technique When Using a Facial Overlay Contour Graft.

Radmall A, Greenwell H, Hill M, Shumway BS, Fiorica J.

Graduate Periodontics, University of Louisville School of Dentistry, Louisville, Kentucky

BACKGROUND: 

Facial overlay grafts in conjunction with ridge preservation tend to improve hard tissue ridge dimensions and the facial soft tissue contour. Traditionally these are performed using a flap technique. The primary aim of this study was to determine if a less invasive flapless technique could be used to achieve similar results to the flap technique.

AIM: The primary aim of this randomized, controlled, blinded clinical trial was to compare a flap to a flapless technique in terms of ridge width and ridge height outcome. Also % vital bone was compared between treatments. 

METHODS: 22 patients, 11 per group, were randomly assigned to receive a cortico-cancellous particulate allograft in the socket and a bovine xenograft as a buccal overlay. Both groups had an acellular dermis membrane to cover the grafts. The primary outcome variables were: 1) Clinical ridge width and height change; and 2) Histologic amounts of vital and non-vital bone, and trabecular space at 4 months.

CONCLUSIONS: 1) Both treatments had a similar loss of ridge width and minimal loss of ridge height. This means that in this study the use of a mimimally invasive flap technique worked as well as a flap approach. 2) The flapless group healed with a significantly higher percentage of vital bone (p < 0.05) when compared to the flap group, probably due to less disruption of the blood supply.

 

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