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Sistemas adesivos em cemento e dentina radicular: revisão bibliográfica

Authors: Silva, Ana Rita Cortes Alçada Oliveira da;

Sistemas adesivos em cemento e dentina radicular: revisão bibliográfica

Abstract

O envelhecimento da população tem despertado novas preocupações na Dentisteria Restauradora devido ao aumento da prevalência de diferentes doenças, como as cáries radiculares. Os compósitos assumem-se como o material de eleição neste tipo de lesões, pelo que se torna necessário conhecer o desempenho dos sistemas adesivos sobre os tecidos radiculares. Assim, o objetivo deste trabalho é a realização de uma revisão bibliográfica sobre a atuação dos sistemas adesivos sobre o cemento e a dentina radicular. A composição histológica e estrutural da dentina radicular e do cemento difere entre si e dos restantes tecidos dentários, sendo a eficácia dos sistemas adesivos avaliada em testes laboratoriais que avaliam parâmetros como a microinfiltração, a resistência ao cisalhamento, a resistência à microtração e a caracterização morfológica da superfície de adesão, e em ensaios clínicos, considerados a prova final do sucesso do sistema adesivo. Os fatores que mais afetam a atuação de um sistema adesivo são: a sua interação com os tecidos dentários, a simplificação dos protocolos de aplicação e a sua constituição. Os resultados, contudo, nem sempre são consensuais, principalmente devido aos diferentes protocolos experimentais. Para além disso, a falta de ensaios clínicos e de estudos concentrados no cemento são outras faltas encontradas. É necessário mais investigação sobre o tema e maior padronização dos métodos experimentais. Para concretizar este objetivo, foi realizada uma pesquisa bibliográfica nas bases de dados Pubmed, Science Direct, b-On, Google Scholar, Wiley e Springer com as palavras-chave “adhesive systems cementum”, “adhesive systems root dentin” e “root caries treatment”.

The ageing of the population has arouse new concern in Restorative Dentistry due to the growing prevalence of different diseases like root caries. Composites are the chosen material to restore this type of lesions and so it is necessary to study the performance of adhesive systems in root tissues. Therefore, the purpose of this work is to review current literature concerning the action of adhesive systems in cementum and root dentin. Histological and structural composition of cementum and root dentin are different from each other and from other root tissues. The efficiency of adhesive systems in these tissues is assessed in laboratory testing and clinical trials. Laboratory testing consists in the evaluation of parameters such as microleakage, microtensile bond strength, microshear bond strength and adhesive surface morphological characterization. The factors that interfere with the performance of adhesive systems are: their interaction with tooth tissues, their constitution and simplification of procedures. The results are not always consistent, especially due to the use of different protocols. Moreover, the lack of clinical trials and laboratory testing in cementum are also problems we are faced with. It is necessary more research about the subject and establishing universal laboratory protocols. For the review, a bibliographic research was made in the following databases Pubmed, Science Direct, b-On, Google Scholar, Wiley and Springer, with the keywords “cementum”, “root dentine” and “adhesive system”.

Tese de mestrado, Medicina dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2013

Country
Portugal
Related Organizations
Keywords

Domínio/Área Científica::Ciências Médicas::Medicina Clínica, Materiais dentários, Teses de mestrado - 2013

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green