title: The Role of Two Different Collagen Membranes for Dehiscence Defect Around Implants in Humans.
abstract: The aim of this study was to elucidate the role of 2 types of collagen membranes (cross-linked vs noncross-linked) used in conjunction with autogenous or allogenic bone followed by xenogeneic bone particles for dehiscence defect around implants in humans. Experimental groups were divided into 2 groups: Group CL (cross-linked, Ossix Plus, n = 24 implants, 16 patients) and Group NCL (noncross-linked, Bio-Gide, n = 25 implants, 18 patients). At the time of implant insertion and uncovery surgery, measurements of the dehiscence bony height, width, and surface area were made. Before applying the membrane to defects, guided bone regeneration was performed. Because it is difficult to measure the degree of exposure, early exposed cases were excluded from the result analysis. The mean percentage gain of the dehiscence defect and the mean marginal bone reduction value of follow-up radiograph did not show statistically significant differences between the 2 groups. Both membranes exhibited satisfactory results on dehiscence defects. As a result, our authors concluded the success of guided bone regeneration was performed simultaneously for dehiscence defects around the implant, regardless whether collagen membranes were cross-linked or noncross-linked.
authors.affiliation: 1  Department of Periodontology, Veterans Health Service Medical Center, Seoul, Korea.|2  Department of Dentistry, Colleage of Medicine, Korea University, Seoul, Korea.
authors.forename: Dong-Woon
authors.initials: DW
authors.lastname: Lee
authors.affiliation: 1  Department of Periodontology, Veterans Health Service Medical Center, Seoul, Korea.
authors.forename: Kyeong-Taek
authors.initials: KT
authors.lastname: Kim
authors.affiliation: 1  Department of Periodontology, Veterans Health Service Medical Center, Seoul, Korea.
authors.forename: Yon-Soo
authors.initials: YS
authors.lastname: Joo
authors.affiliation: 1  Department of Periodontology, Veterans Health Service Medical Center, Seoul, Korea.
authors.forename: Mi-Kyung
authors.initials: MK
authors.lastname: Yoo
authors.affiliation: 1  Department of Periodontology, Veterans Health Service Medical Center, Seoul, Korea.
authors.forename: Jeoung-A
authors.initials: JA
authors.lastname: Yu
authors.affiliation: 2  Department of Dentistry, Colleage of Medicine, Korea University, Seoul, Korea.
authors.forename: Jae-Jun
authors.initials: JJ
authors.lastname: Ryu
mesh_terms: D020341:Absorbable Implants; D016301:Alveolar Bone Loss; D001861:Bone Regeneration; D003094:Collagen; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D016557:Guided Tissue Regeneration, Periodontal; D006801:Humans; D008567:Membranes, Artificial
chemical_list: D015921:Dental Implants; D008567:Membranes, Artificial; D003094:Collagen
keywords: collagen membrane; cross-linked; dehiscence; guided bone regeneration; noncross-linking