Follow Us      

Share Page:

Volume 33 , Issue 1
January/February 2013

Pages 71–78

Ridge Preservation With and Without Primary Wound Closure: A Case Series

David M. Kim, DDS, DMSc/Nicola De Angelis, DDS/Marcelo Camelo, DDS/Marc L. Nevins, DMD, MMSc/Peter Schupbach, PhD/Myron Nevins, DDS

DOI: 10.11607/prd.1463

The purpose of this study was to determine the clinical and histologic efficacy of the combination of alloplastic biphasic calcium phosphate composed of 30% hydroxyapatite and 70% β–tricalcium phosphate (Osteon II) and a cross-linked collagen membrane used to reconstruct an extraction socket with new bone formation. Twelve patients from two private dental practices requiring extraction of maxillary and mandibular nonmolar teeth (n = 30) received both Osteon II (0.5- to 1.0-mm particle size) and the collagen membrane. The primary healing intention group (group A, n = 12) received primary flap closure over the membrane, while in the secondary healing intention group (group B, n = 18), the membrane was left exposed. Early wound healing seemed to be slower in group B when compared to group A, but the difference was not noticeable after 4 weeks. Clinical reentry revealed that the dimensions of the ridge appeared to be maintained in both groups, and internal socket bone fill was evident. The grafted area appeared to be well vascularized, but clinically visible graft particles were noted in some cases. Light microscopic analysis revealed the formation of new bone directly apposing the surfaces of graft particles and bridging the space between them, indicating that the graft material behaved as an osteoconductive scaffold. The mean amount of vital bone in group A was 40.3% ± 7.8%, while the remaining graft was 6.0% ± 4.0%. The mean amount of vital bone in group B was 47.3% ± 11.3%, while the remaining graft was 18.0% ± 20.0%. The absence of primary flap closure did not affect the percentage of vital bone formation or residual graft. (Int J Periodontics Restorative Dent 2013;33:71–78. doi: 10.11607/prd.1463)

Full Text PDF File | Order Article


Get Adobe Reader
Adobe Acrobat Reader is required to view PDF files. This is a free program available from the Adobe web site.
Follow the download directions on the Adobe web site to get your copy of Adobe Acrobat Reader.


© 2017 Quintessence Publishing Co, Inc

PRD Home
Current Issue
Ahead of Print
Author Guidelines
Accepted Manuscripts
Submission Form
Quintessence Home
Terms of Use
Privacy Policy
About Us
Contact Us