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  • Title: Peri-implant defect regeneration in the diabetic pig: A preclinical study.
    Author: von Wilmowsky C, Schlegel KA, Baran C, Nkenke E, Neukam FW, Moest T.
    Journal: J Craniomaxillofac Surg; 2016 Jul; 44(7):827-34. PubMed ID: 27209350.
    Abstract:
    OBJECTIVES: The study aims to establish a peri-implant dehiscence-type bone defect in a diabetic animal model of human bone repair and to quantify the influence of diabetes on peri-implant bone regeneration. MATERIAL AND METHODS: Experimental diabetes was induced in three domestic pigs by streptozotocin. Three animals served as healthy controls. After 12 months four standardized peri-implant dehiscence bone defects were surgically created in the ramus mandibulae. The animals were sacrificed after 90 days. Samples were histologically analyzed to quantify new bone height (NBH), bone-to-implant-contact (BIC), area of newly formed bone (NFB), bone-density (BD), and bone mineralization (BM) in the prepared defect (-D) and in a local control region (-L). RESULTS: After 90 days, diabetic animals revealed a significantly lower BIC (p = 0.037) and BD (p = 0.041) in the defect area (-D). NBH and BM-D differences within the groups were not significant (p > 0.05). Significant more NFB was measured in the healthy control group (p = 0.046). In the region of local bone BIC-L was significant less in the diabetic group (p = 0.028). In the local control region BD-L and BM-L was lower in the diabetic group compared to the healthy control animals (p > 0.05). CONCLUSION: Histological evidence indicates impaired peri-implant defect regeneration in a diabetic animal model.
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