Impact of head and neck radiotherapy on the mechanical behavior of composite resins and adhesive systems: A systematic review

Autor(es)

Madrid Troconis, Cristhian Camilo ^[1] ; Santos-Silva, Alan Roger ^[2] ; Brandao, Thais Bianca ^[3] ; Lopes, Marcio Ajudarte ^[2] ; de Goes, Mario Fernando ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, UNICAMP, Dept Restorat Dent, Piracicaba Dent Sch, Dent Mat Area, Limeira Ave 901, BR-13414903 Piracicaba, SP - Brazil

^[2] Univ Estadual Campinas, UNICAMP, Dept Oral Diag, Semiol Area, Piracicaba Dent Sch, Piracicaba, SP - Brazil

^[3] Univ Sao Paulo, Med Sch, Sao Paulo State Canc Inst ICESP, Dent Oncol Serv, FMUSP, Sao Paulo, SP - Brazil

• Tipo de documento: Artigo de Revisão
• Fonte: Dental Materials; v. 33, n. 11, p. 1229-1243, NOV 2017.
• Citações Web of Science: 1

Resumo

Objective. To analyze the evidence regarding the impact of head and neck radiotherapy (HNRT) on the mechanical behavior of composite resins and adhesive systems. Methods. Searches were conducted on PubMed, Embase, Scopus and ISI Web of Science databases using ``Radiotherapy{''}, `` Composite resins{''} and ``Adhesivesystems{''} as keywords. Selected studies were written in English and assessed the mechanical behavior of composite resins and/or adhesive systems when bonding procedure was conducted before and/or after a maximum radiation dose >= 50 Gy, applied under in vitro or in vivo conditions. Results. In total, 115 studies were found but only 16 were included, from which five evaluated the effect of in vitro HNRT on microhardness, wear resistance, diametral tensile and flexural strength of composite resins, showing no significant negative effect in most of reports. Regarding bond strength of adhesive systems, 11 studies were included from which five reported no meaningful negative effect when bonding procedure was conducted before simulated HNRT. Conversely, five studies showed that bond strength diminished when adhesive procedure was done after in vitro radiation therapy. Only two studies about dental adhesion were conducted after in vivo radiotherapy but the results were not conclusive. Significance. The mechanical behavior of composite resins and adhesive systems seems not to be affected when in vitro HNRT is applied after bonding procedure. However, bond strength of adhesive systems tends to decrease when simulated radiotherapy is used immediately before bonding procedure. Studies assessing dentin bond strength after in-vivo HNRT were limited and controversial. (C) 2017 The Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 12/06138-1 - Estudo prospectivo da incidência de trismo induzido por radioterapia em pacientes com carcinoma espinocelular de boca
• Beneficiário: Ana Carolina Prado Ribeiro e Silva
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/18402-8 - Avaliação dos efeitos diretos da radiação sobre o esmalte, a dentina e a polpa dental de pacientes com câncer de cabeça e pescoço
• Beneficiário: Alan Roger dos Santos Silva
• Modalidade de apoio: Auxílio à Pesquisa - Regular