Differential expression of immunologic proteins in gingiva after socket preservation in mini pigs

• Autor(a) principal: JUNG,Seunggon
• Data de Publicação: 2015
• Outros Autores: YANG,Hee-Young, LEE,Tae-Hoon
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Journal of applied oral science (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572015000200012
• topic: Tooth socket; Tooth extraction; Alveolar bone loss; Cytokines; Preprosthetic oral surgical procedures

During healing following tooth extraction, inflammation and the immune response within the extraction socket are related to bone resorption.Objective: We sought to identify how the alloplastic material used for socket preservation affects the immune responses and osteoclastic activity within extraction sockets.Material and Methods : Using a porcine model, we extracted teeth and grafted biphasic calcium phosphate into the extraction sockets. We then performed a peptide analysis with samples of gingival tissue from adjacent to the sockets and compared the extraction only (EO) and extraction with socket preservation (SP) groups. We also used real-time polymerase chain reaction (PCR) to evaluate the expression level of immunoglobulins, chemokines and other factors related to osteoclastogenesis. Differences between the groups were analyzed for statistical significance using paired t tests.Results : Levels of IgM, IgG and IGL expression were higher in the EO group than in the SP group 1 week post-extraction, as were the levels of CCL3, CCL5, CXCL2, IFN-γ and TNF-α expression (p<0.05). In addition, receptor activator of nuclear factor kappa-B ligand (RANKL) was also significantly upregulated in the EO group (p<0.05), as were IL-1β, IL-6 and IL-8 (p<0.05).Conclusions : These results suggest that the beneficial effect of socket preservation can be explained by suppression of immune responses and inflammation.