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Implant osseointegration in irradiated bone: an experimental study.
Ocaña, R P; Rabelo, G D; Sassi, L M; Rodrigues, V P; Alves, F A.
Afiliação
  • Ocaña RP; Department of Stomatology, AC Camargo Cancer Center, São Paulo, Brazil.
  • Rabelo GD; Department of Stomatology, AC Camargo Cancer Center, São Paulo, Brazil.
  • Sassi LM; Department of Stomatology, Erasto Gaertner Cancer Hospital, Curitiba, Brazil.
  • Rodrigues VP; Faculty of Dentistry, University of São Paulo, São Paulo, Brazil.
  • Alves FA; Department of Stomatology, AC Camargo Cancer Center, São Paulo, Brazil.
J Periodontal Res ; 52(3): 505-511, 2017 Jun.
Article em En | MEDLINE | ID: mdl-27624290
BACKGROUND AND OBJECTIVES: The aim of this study was to evaluate the effect of radiotherapy on the osseointegration of dental implants in the tibia and the action of platelet-rich plasma (PRP) as an adjuvant therapy. MATERIAL AND METHODS: A total of 18 rabbits received two implants in each tibial epiphysis, totalizing 72 implants. The control group (group I) was composed by six rabbits and did not receive radiotherapy. The test groups (II and III) received a single dose of 1727 cGy. Group II was composed by six irradiated animals and group III by six animals that received irradiation and PRP during implant placement. The implant success rate, the bone-implant contact (BIC), and the bone volume were analyzed. RESULTS: There was no osseointegration in four of the implants, three in group II and one in group III. Total BIC was significantly higher in group I, when compared to the other groups. There was a significant difference of osteoid BIC only between irradiated animals (group II, 8.5%; group III, 4.7%; p = 0.001). On the other hand, the mineralized BIC was significantly higher in group I. Furthermore, group II had a lower mineralized BIC than group III (p = 0.002). Bone volume was higher in the control group (41.3%), followed by group III (33.4%) and II (25.1%), with differences between groups I and II (p = 0.001) and groups II and III (p = 0.022). CONCLUSIONS: The present study showed that both the bone volume and BIC were higher in the control group. However, the failure rates of the implants were low in both irradiated groups. The PRP was a positive adjuvant in the osseointegration process.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Tíbia / Implantes Dentários / Osseointegração Limite: Animals Idioma: En Revista: J Periodontal Res Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Tíbia / Implantes Dentários / Osseointegração Limite: Animals Idioma: En Revista: J Periodontal Res Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos