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Tissue thickness influence in the implants placement in patients with little available bone


Tissue thickness influence in the implants placement in patients with little available bone

Why is it interesting? Despite all the technical and biological advances in dental implants, bone resorption around the implants placed immediately after extraction can still pose a challenge for the clinician. To reduce bone resorption around immediate implants, factors such as the thickness of gingival tissue, the use of graft materials and surgical techniques have been investigated. This study aimed to evaluate the influence of gingival thickness and bone graft remodeling of facial bone after placement of immediate implant in patients with small thickness of facial bone, using a flapless technique.

Experimental design: the eight dogs´ gums were incised on one side of the jaw, premolars were extracted without retail -four implants were installed on each side of the 1.5 mm of the vestibular bone. These areas were randomly named in GT (test group) = thin gum; GT + ME (test group + graft material); GC (control group) = normal gum; and GC + ME (control group + graft material). After 12 weeks, the dogs were sacrificed and samples were processed for histological analysis.

The findings: initially, all animals exhibited a thin facial bone. Histologic analysis suggested that vestibular bone loss occurred after placement of immediate implants, even with a flapless technique. In all experimental groups, the vestibular gap was filled with newly formed bone and the bone level was slightly apical implant level. There were no statistically significant differences between groups for the morphometric variables.

Comments: This study showed that the thickness of the mouth bone was a key factor in bone resorption, even with the use of flapless technique. Moreover, it showed that gum thickness or adding a biomaterial in a thin gap in a mouth bone does not influence the vestibular bone resorption, while the flapless technique for implant placement.

Source: INPN, written by Rafaela Videira
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