Avaliação da infiltração microbiana na interface implante-abutment em conexões tipo hexágono interno e cone-morse de implantes osseointegráveis
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Data
2007-09-28
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Universidade Federal de Goiás
Resumo
The scientific literature has reported that dental implants can be affected
by the oral microorganisms through the formation of a bacterial biofilm. The
region most affected is the connection between the implant platform and the
prosthetic abutment, particularly in implants with an external connection.
Therefore, the region of the implant/abutment connection can participate in the
development of peri-mucositis or peri-implantitis. They propose that these
implant/abutment connections known as morse taper provide an effective seal
against microorganisms. Thus the objective of this research was to evaluate the
microleakage on the implant/abutment interface of internal hex and morse taper
prosthetic connections. Thirty five (35) implants were selected and divided into
seven (7) groups (5 groups of implants from Brazilian manufacturers and 2
groups of implants manufactured abroad). The tested implants were Straumann
(Straumann AG® / Switzerland), Ankylos (Dentsply-Friadent® / Germany), AR
Morse (Conexão/Sistema de Prótese® São Paulo-SP), Titamax CM (Neodent®
/Curitiba-PR), Titamax II Plus (Neodent®/Curitiba-PR), Stronger (Sin/Sistema
Nacional de Implante® São Paulo - SP) e Titanium Fix CM (AS Technology /
São José dos Campos-SP). For the microbiological test the bacterium
Enterococus faecalis (ATCC 29212) was selected. This bacterium was
inoculated in the interior aspect of the implant followed by immediate
installation and final torque (N/cm) of the prosthetic abutment. The
implant/abutment set up was then placed in a Brain Heart Infusion broth (BHI)
and incubated in this broth for 14 days. During this period, the cloudiness of the
broth was evaluated at days 7 and 14. The data were statistically analyzed by the
Kruskal Wallis method. The results demonstrated that all samples from both
Ankylos and Neodent CM groups did not present microleakage. Although 20%
of samples from Conexao AR Morse group presented microleakage, there was
no significant statistical difference when compared to the former two groups.
Furthermore, all samples from Straumann,Titanium Fix CM, Neodent Titamax
II Plus, and SIN Strong groups presented microleakage after 14 days of culture (p=0.05), though correlation analysis among these samples did not reveal
significant statistical differences.
Descrição
Citação
SANTANA, Washington Macedo de. Evaluation of bacterial leakage at implant abutment interfaces of implants wiht internal hexagonal. 2007. 84 f. Dissertação (Mestrado em Ciência da Saúde) - Universidade Federal de Goiás, Goiânia, 2007.