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Effects of Condensation on Peri-implant Bone Density and Remodeling
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نویسنده
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wang l. ,wu y. ,perez k.c. ,hyman s. ,brunski j.b. ,tulu u. ,bao c. ,salmon b. ,helms j.a.
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منبع
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journal of dental research - 2017 - دوره : 96 - شماره : 4 - صفحه:413 -420
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چکیده
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Bone condensation is thought to densify interfacial bone and thus improve implant primary stability,but scant data substantiate either claim. we developed a murine oral implant model to test these hypotheses. osteotomies were created in healed maxillary extraction sites 1) by drilling or 2) by drilling followed by stepwise condensation with tapered osteotomes. condensation increased interfacial bone density,as measured by a significant change in bone volume/total volume and trabecular spacing,but it simultaneously damaged the bone. on postimplant day 1,the condensed bone interface exhibited microfractures and osteoclast activity. finite element modeling,mechanical testing,and immunohistochemical analyses at multiple time points throughout the osseointegration period demonstrated that condensation caused very high interfacial strains,marginal bone resorption,and no improvement in implant stability. collectively,these multiscale analyses demonstrate that condensation does not positively contribute to implant stability. © international & american associations for dental research.
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کلیدواژه
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bone mineral density; bone regeneration; dental implants; finite element analysis; Implantology; osseointegration
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آدرس
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state key laboratory of oral diseases,west china hospital of stomatology,sichuan university,chengdu,china,division of plastic and reconstructive surgery,department of surgery,stanford university school of medicine,stanford,ca, United States, division of plastic and reconstructive surgery,department of surgery,stanford university school of medicine,stanford,ca,united states,orthodontic department,stomatology hospital of chongqing,medical university,chongqing key laboratory of oral disease and biomedical sciences,chongqing municipal key laboratory,chongqing, China, division of plastic and reconstructive surgery,department of surgery,stanford university school of medicine,stanford,ca, United States, division of plastic and reconstructive surgery,department of surgery,stanford university school of medicine,stanford,ca, United States, division of plastic and reconstructive surgery,department of surgery,stanford university school of medicine,stanford,ca, United States, division of plastic and reconstructive surgery,department of surgery,stanford university school of medicine,stanford,ca, United States, state key laboratory of oral diseases,west china hospital of stomatology,sichuan university,chengdu, China, division of plastic and reconstructive surgery,department of surgery,stanford university school of medicine,stanford,ca,united states,ea 2496,orofacial pathologies,imaging and biotherapies laboratory,paris descartes university-sorbonne paris cité,montrouge,france,ap-hp odontology department bretonneau,hopitaux universitaires paris nord val de seine,paris, France, division of plastic and reconstructive surgery,department of surgery,stanford university school of medicine,stanford,ca,united states,stanford university school of medicine,1651 page mill road,palo alto,ca, United States
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Authors
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