Comparação da condição periimplantar de implantes instalados em substituição a dentes perdidos por doença periodontal ou por outros fatores etiológicos

• Autor(a) principal: Dumer, Patricia Arezi Peixoto
• Data de Publicação: 2015
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
• Texto Completo: http://repositorio.ufes.br/handle/10/8196
• topic: Dental implants; Periodontal disease; Peri-implant clinical parameters; Periimplant mucosa; Microbiology; Mucosa periimplantar; Microbiológico; Implantes osseointegrados; Doença periodontal; Parâmetros clínicos periimplantares; Odontologia; 616.314

The use of dental implants had become an excellent option for replacing missing teeth. However, an important problem related to this therapy is the inflammatory complication called peri-implant disease. Some studies have observed a similar subgingival microbiota both in periodontal pockets as in the peri-implant pockets. So, an elevated risk to develop periimplantitis has been found for patients with a history of periodontal disease. The purpose of this study was to compare the periimplantar condition observed in dental implants that replaced teeth lost by periodontal disease (Group A) with the condition observed in dental implants that replaced teeth lost by others etiological factors (Group B). Forty-six dental implants, restored and functional for at least 5 years, were evaluated in a total of 21 subjects. The clinical parameters evaluated were: plaque index, gingival index, probing depth, bleeding on probing. Subgingival samples were taken from the deepest sites for each implant and analyzed for the presence of 36 microorganisms by checkerboard DNA-DNA hybridization. After analyzing the data, it was observed that the implants of Group A had higher probing depth (5.30 ± 1.11 vs 4.61 ± 1.37) and higher percentage of sites with gingival bleeding (86.96% vs 47, 83%) when compared to implants of Group B, respectively (p <0.05). The microbiological profiles of subgingival environments were similar. However, higher mean counts of P. gingivalis, T. forsythia and T. denticola were observed in the Group A. This study showed that dental implants that replaced teeth lost by periodontal disease had greater probing depth and higher gingival index than dental implants that replaced teeth lost by others reasons. In addition, three periodontal pathogenic bacterial species were present at higher levels in the dental implants that replaced teeth lost by periodontal disease.