Abstract
To evaluate bone healing in the extraction socket of the feline mandibular canine tooth after grafting. Eighteen adult cats were submitted to unilateral extraction of mandibular canine tooth and divided into three groups. In group 1 (n=6), control, the extraction socket was left empty. In group 2 (n=6), the extraction socket was filled with autogenous cancellous bone from the iliac crest and in group 3 (n=6), with cortical bone chips from the iliac crest. Cats were euthanized at 6 weeks postoperative. Immediate postoperative radiographs in dorsoventral view showed a radiolucent area at the extraction wound. A decreased radiolucency was observed on the radiographs taken at 6 weeks postoperative. Histological examination showed formation of woven bone within the extraction socket. The percentage of newly formed bone within the extraction socket, measured by the histometry, showed no statistically significant difference among the values of the three groups (Kruskal-Wallis'test p>0.05) (group 1: 52.54 ± 15.46, group 2: 50.51 ± 5.01, group 3: 51.85 ± 9.52). The bone regeneration observed in the extraction sockets filled with autogenous cancellous bone or autogenous cortical bone chips was similar to that observed in the control sites, given an observation period of 6 weeks after extraction of the mandibular canine tooth.
Highlights
The most common dental diseases in cats are: periodontal disease, feline odontoclastic resorptive lesions and feline chronic gingivostomatitis
The objective of the present study was to evaluate bone formation resulting from the placement of autogenous cancellous bone or autogenous cortical bone chips into fresh extraction sockets in cats
In group 2, the extraction socket was filled with autogenous cancelous bone from the iliac crest and in group 3, with autogenous cortical bone chips from the iliac crest
Summary
The most common dental diseases in cats are: periodontal disease, feline odontoclastic resorptive lesions and feline chronic gingivostomatitis. These diseases often cause the loss of teeth or require dental extraction. Autogenous cancellous bone is regarded as the ideal graft as it provides scaffold for osteoconduction, growth factor for osteoinduction and progenitor cells for osteogenesis[12,13]. Cortical bone chips represent an alternative for autologous bone graft. They possess weak osteogenic potential, their osteoinductive property is intense[14,15]
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