科研之友
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摘要
The purpose of this research was to compare the bone formation around submerged and non-submerged implants installed in a mandible of dog. Seven beagle dogs were used in this protocol; initially, was performed extraction of posterior teeth of mandible and after 3 month healing were installed two dental implants with surface treatment (subtraction of titanium via acidification) in each hemimandible. A transmucosal healing screw of 7 mm without oclusal contact was installed at the anterior implant as a model of non-submerged implant; in the posterior implant were installed a cover screw, using the submerged technique. After six weeks of healing, histomorphometric analysis of osseous tissue between the threads was performed. Was analyzed the implant unit as well as the cervical, meddle and apical region of implant. Student t test with 5% significance was used. The non-submerged implant model showed more bone formation than submerged implant without statistically significance (p=0.106); for regional analyses, cervical area shows more osseous formation than middle and apical areas. The regional analyses did not present statistical difference between areas for comparative analysis of submerged and non-submerged implant model. Non-submerged implant model it%26apos;s not an obstacle for osseous formation. El objetivo de esta investigaci車n fue comparar la formaci車n 車sea alrededor de implantes dentales sumergidos y no sumergidos instalados en mand赤bula de perro. Siete perros Beagle fueron utilizados en este protocolo; inicialmente fueron realizadas las exodoncias de dientes posteriores de mand赤bula y luego de 3 meses de recuperaci車n fueron instalados dos implantes dentales con tratamiento de superficie en cada hemimand赤bula (substracci車n de titanio v赤a acidificaci車n). En el implante anterior fue instalado tambi谷n un conector transmucoso de 7 mm sin contacto oclusal y en el implante posterior fue instalado el tornillo de cierre. Luego de 6 semanas de recuperaci車n, se realiz車 un an芍lisis histomorfom谷trico del tejido 車seo presente entre las roscas. Se analiz車 el implante como unidad as赤 como tambi谷n sus sectores cervical, medio y apical. Se utiliz車 la prueba estad赤stica t de student con 5% de significancia estad赤stica. El implante no sumergido present車 mayor formaci車n 車sea sin diferencias estad赤sticamente significativa (p=0.106); en los an芍lisis regionales, el 芍rea cervical present車 mayor formaci車n 車sea que las 芍reas medianas y apicales. El an芍lisis regional no present車 diferencias estad赤sticamente significativas entre ambos tipos de implante. El modelo de implante no sume
