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Revista de Odontologia da UNESP

versão On-line ISSN 1807-2577

Resumo

IBELLI, Guilherme Siqueira et al. Clinical comparison of short and conventional implants placed in the posterior region of the mandible. A pilot study. Rev. odontol. UNESP [online]. 2017, vol.46, n.6, pp.319-324.  Epub 30-Nov-2017. ISSN 1807-2577.  http://dx.doi.org/10.1590/1807-2577.04017.

Objective

To evaluate and correlate the values of radiographic bone density, peri-implant bone height and resonance frequency analysis (RFA) of short or conventional implants placed in the posterior region of the mandible after installing a prosthesis.

Material and method

Eleven patients were selected for this prospective parallel pilot study. The prostheses were supported by two types of implants: short implants (n = 18) (5.0 x 5.5 mm and 5.0 x 7.0 mm) and conventional implants (n = 23) (4.0 x10 mm and 4.0 x 11.5 mm). The implants were evaluated by RFA, by measuring the bone height, and peri-implant bone density. The implants were evaluated at the periods T0 (immediately after installation of the prosthesis), T1 (after 90 days), and T2 (after 180 days).

Result

There were no statistically significant differences between groups with respect to radiographic bone density (152.50 ± 15.39 vs. 157.60 ± 28.46, for conventional and short implants, respectively at T2), stability of the implants (Conventional implants: 66.76 ± 10.39 at T0, and 61.85 ± 8.38 at T2 vs. Short implants: 57.50 ± 12.17 at T0, and 61.53 ± 7.39 at T2) and peri-implant bone loss (0.03 mm vs.-0.17 mm, for conventional and short implants, respectively at T2). Additionally, a significant correlation between the evaluated parameters was not detected.

Conclusion

The short and conventional implants presented similar stability, bone level and density after the activation of occlusion loading.

Palavras-chave : Bone resorption; bone density; prostheses and implants.

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