Comparison of naturally occurring and ligature-induced peri-implantitis bone defects in humans and dogs.

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Publication year
2007Source
Clinical Oral Implants Research, 18, 2, (2007), pp. 161-170ISSN
Publication type
Article / Letter to editor

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Organization
Neurology
Periodontology and Biomaterials
Journal title
Clinical Oral Implants Research
Volume
vol. 18
Issue
iss. 2
Page start
p. 161
Page end
p. 170
Subject
NCMLS 1: Immunity, infection and tissue repair; UMCN 4.3: Tissue engineering and reconstructive surgeryAbstract
OBJECTIVES: The aim of the present study was to evaluate and compare naturally occuring and ligature-induced peri-implantitis bone defects in humans and dogs. MATERIAL AND METHODS: Twenty-four partially and fully edentulous patients undergoing peri-implant bone augmentation procedures due to advanced peri-implant infections were included in this study (n=40 implants). Furthermore, peri-implantitis was induced by ligature placement and plaque accumulation in five beagle dogs for three months following implant insertion (n=15 implants). The ligatures were removed when about 30% of the initial bone was lost. During open flap surgery, configuration and defect characteristics of the peri-implant bone loss were recorded in both humans and dogs. RESULTS: Open flap surgery generally revealed two different classes of peri-implant bone defects. While Class I defects featured well-defined intrabony components, Class II defects were characterized by consistent horizontal bone loss. The allocation of intrabony components of Class I defects regarding the implant body allowed a subdivision of five different configurations (Classes Ia-e). In particular, human defects were most frequently Class Ie (55.3%), followed by Ib (15.8%), Ic (13.3%), Id (10.2%), and Ia (5.4%). Similarly, bone defects in dogs were also most frequently Class Ie (86.6%), while merely two out of 15 defects were Classes Ia and Ic (6.7%, respectively). CONCLUSIONS: Within the limits of the present study, it might be concluded that configurations and sizes of ligature-induced peri-implantitis bone defects in dogs seemed to resemble naturally occurring lesions in humans.
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- Academic publications [204859]
- Electronic publications [103204]
- Faculty of Medical Sciences [81031]
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