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Aplicação clínica das resinas compostas Bulk-Fill: revisão narrativa
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Abstract(s)
As resinas Bulk-Fill apareceram no mercado para colmatar as dificuldades apresentadas pelas resinas convencionais, nomeadamente o problema da contração de polimerização e consequente técnica sensível (incremental). O termo “Bulk-Fill” significa resina de preenchimento único. São utilizadas nos dentes posteriores em incrementos de 4 a 5 mm contrariamente às resinas compostas convencionais que permitem apenas incrementos de no máximo 2mm de espessura. Estão disponiveis no mercado em duas formas, resina Bulk-Fill fluída, usada como base de cavidades e resina Bulk-Fill com viscosidade média, indicada para restaurações de cavidades classe I e II.
Esta técnica restauradora com resinas Bulk-Fill é considerada na literatura como uma alternativa e não uma substituição da técnica incremental. Mostram-se necessários mais estudos que visem determinar com maior fiabilidade as propriedades mecânicas das resinas Bulk-Fill, para que seja possível ter maior segurança e evidência quanto ao seu desempenho clínico.
Foi executada uma pesquisa bibliográfica nas bases de dados PubMed e Science Direct, no período compreendido entre Novembro de 2022 e Fevereiro de 2023 utilizando as seguintes palavras chave: bulk-Fill composite resin; depth of cure; degree of conversion; polymerisation shrinkage. Foi utilizado o operador booleano AND, fazendo diferentes combinações com as palavras. Foram estabelecidos critérios de inclusão e de exclusão para a seleção dos artigos.
Esta revisão narrativa tem como objetivo avaliar a evidência científica capaz de suportar a aplicação clínica das resinas Bulk-Fill, nomeadamente as suas indicações, vantagens e desvantagens relativamente às resinas convencionais, para dar resposta à questão, qual é a eficácia clínica das resinas Bulk-Fill na restauração de dentes posteriores?
Bulk-Fill composites have emerged in the market to address the difficulties associated with conventional composites, particularly the issue of polymerization shrinkage and the related sensitive incremental technique. The term 'Bulk Fill' refers to a single-fill composite resin. These composites are used in posterior teeth in increments of 4 to 5 mm, unlike conventional composite resins that allow increments of a maximum thickness of 2 mm. They are available in two forms: flowable Bulk-Fill resin, used as a cavity base, and regular viscosity Bulk-Fill resin, indicated for Class I and II cavity restorations. The restorative technique using Bulk-Fill composites is considered in the literature as an alternative rather than a replacement for the incremental technique. Further studies are needed to determine the mechanical properties of Bulk-Fill composites more reliably, in order to provide greater safety and evidence regarding their clinical performance. A literature search was conducted in the PubMed/Medline and ScienceDirect databases, from November 2022 to February 2023, using the following keywords: “bulk-Fill composite resin, depth of cure, degree of conversion, polymerization shrinkage”. The Boolean operator AND was used, combining different combinations of the keywords. Inclusion and exclusion criteria were established for article selection. This narrative review aims to evaluate the scientific evidence supporting the clinical application of Bulk-Fill composites, including their indications, advantages, and disadvantages compared to conventional composites, in order to answer the question: What is the clinical efficacy of Bulk-Fill composites in the restoration of posterior teeth?
Bulk-Fill composites have emerged in the market to address the difficulties associated with conventional composites, particularly the issue of polymerization shrinkage and the related sensitive incremental technique. The term 'Bulk Fill' refers to a single-fill composite resin. These composites are used in posterior teeth in increments of 4 to 5 mm, unlike conventional composite resins that allow increments of a maximum thickness of 2 mm. They are available in two forms: flowable Bulk-Fill resin, used as a cavity base, and regular viscosity Bulk-Fill resin, indicated for Class I and II cavity restorations. The restorative technique using Bulk-Fill composites is considered in the literature as an alternative rather than a replacement for the incremental technique. Further studies are needed to determine the mechanical properties of Bulk-Fill composites more reliably, in order to provide greater safety and evidence regarding their clinical performance. A literature search was conducted in the PubMed/Medline and ScienceDirect databases, from November 2022 to February 2023, using the following keywords: “bulk-Fill composite resin, depth of cure, degree of conversion, polymerization shrinkage”. The Boolean operator AND was used, combining different combinations of the keywords. Inclusion and exclusion criteria were established for article selection. This narrative review aims to evaluate the scientific evidence supporting the clinical application of Bulk-Fill composites, including their indications, advantages, and disadvantages compared to conventional composites, in order to answer the question: What is the clinical efficacy of Bulk-Fill composites in the restoration of posterior teeth?
Description
Keywords
Bulk-Fill composite resin Depth of cure Degree of conversion Polymerisation shrinkage