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International Journal of Morphology

versão On-line ISSN 0717-9502


OLATE, Sergio; CHAVES NETTO, Henrique Duque de Miranda; MAZZONETTO, Renato  e  ALBERGARIA-BARBOSA, Jose Ricardo de. Early Osseous Tissue Formation Associated to Submerged and Non-Submerged Dental Implants: A Histomorphometric Animal Study. Int. J. Morphol. [online]. 2012, vol.30, n.1, pp. 130-135. ISSN 0717-9502.

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's not an obstacle for osseous formation.

Palavras-chave : Dental implant; Non-submerged implant; Bone repair.

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