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Preparação dentária para coroas cerâmicas horizontal versus biological oriented preparation technique: revisão integrativa
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A técnica de preparacão dentária sem linha de acabamento, também conhecida como técnica de preparacão biológica (BOPT), é um protocolo em que em que há a eliminação da junção amelo-cimentária usando brocas de diamante. Isto torna possível criar uma coroa artificial que cobre todo o dente e que ajudará os tecidos periodontais a estruturarem-se e a estabilizarem-se em torno da zona cervical. Desta forma, o objetivo desta revisão foi analisar a influência da técnica BOPT sobre os tecidos periodontais comparativamente à técnica convencional, através dos resultados clínicos mecânicos e biológicos relativos ao índice de placa, profundidade de sondagem, índice de inflamação gengival e estabilidade marginal gengival. Para tal foi realizada uma pesquisa bibliográfica nas bases de dados PubMed, B-On e ScienceDirect com diversas palavras chave combinadas entre si. A questão de investigação desta revisão foi “A técnica de preparação BOPT apresenta uma melhor relação estética e resposta periodontal, em relação à técnica convencional?”. Foram incluídos 8 artigos que cumpriam os critérios de inclusão desta revisão integrativa e que apresentavam diversas tipologias, tais como in vitro, estudos clínicos randomizados, estudos clínicos prospetivos e de análise transversal, publicados desde 2016. Verificou-se que as margens verticais tinham uma maior tendência para sangrar à sondagem a curto prazo, enquanto as margens convencionais apresentavam uma recessão gengival mais pronunciada assim como uma maior inflamação gengival. Também a taxa de complicações biológicas e mecânicas é muito baixa em relação à técnica BOPT, considerando as elevadas taxas de sobrevivência. No futuro são necessários mais estudos para avaliar os comportamentos dos tecidos e confirmar o pronóstico da BOPT a longo prazo, já que esta é uma técnica ainda considerada relativamente recente.
The non-finishing line tooth preparation technique, also known as the biological preparation technique (BOPT), is a protocol in which the cementoenamel junction is eliminated using diamond burs. This makes it possible to create an artificial crown that covers the entire tooth and that will help the periodontal tissues to structure and stabilize themselves around the cervical zone. Thus, the objective of this review was to analyze the influence of the BOPT technique on the periodontal tissues compared to the conventional technique, through the clinical, mechanical and biological results related to the plaque index, probing depth, gingival inflammation index and gingival marginal stability. For this purpose, a bibliographic search was carried out in the PubMed, B-On and ScienceDirect databases with several keywords combined with each other. The research question of this review was “Does the BOPT preparation technique present a better aesthetic relationship and periodontal response, compared to the conventional technique?”. Eight articles that met the inclusion criteria for this integrative review and presented different types, such as in vitro, randomized clinical studies, prospective clinical studies and cross-sectional analysis, published since 2016, were included. It was found that vertical margins had a greater tendency to bleed on probing in the short term, while conventional margins presented more pronounced gingival recession as well as greater gingival inflammation. The rate of biological and mechanical complications is also very low in relation to the BOPT technique, considering the high survival rates. Further studies are needed in the future to evaluate tissue behavior and confirm the long term prognosis of BOPT, since this is a technique still considered relatively new.
The non-finishing line tooth preparation technique, also known as the biological preparation technique (BOPT), is a protocol in which the cementoenamel junction is eliminated using diamond burs. This makes it possible to create an artificial crown that covers the entire tooth and that will help the periodontal tissues to structure and stabilize themselves around the cervical zone. Thus, the objective of this review was to analyze the influence of the BOPT technique on the periodontal tissues compared to the conventional technique, through the clinical, mechanical and biological results related to the plaque index, probing depth, gingival inflammation index and gingival marginal stability. For this purpose, a bibliographic search was carried out in the PubMed, B-On and ScienceDirect databases with several keywords combined with each other. The research question of this review was “Does the BOPT preparation technique present a better aesthetic relationship and periodontal response, compared to the conventional technique?”. Eight articles that met the inclusion criteria for this integrative review and presented different types, such as in vitro, randomized clinical studies, prospective clinical studies and cross-sectional analysis, published since 2016, were included. It was found that vertical margins had a greater tendency to bleed on probing in the short term, while conventional margins presented more pronounced gingival recession as well as greater gingival inflammation. The rate of biological and mechanical complications is also very low in relation to the BOPT technique, considering the high survival rates. Further studies are needed in the future to evaluate tissue behavior and confirm the long term prognosis of BOPT, since this is a technique still considered relatively new.
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Palavras-chave
BOPT Preparações dentárias Preparação dentária vertical Recessão gengival Espaço biológico Coroas dentárias Tooth preparations Vertical tooth preparation Gingival recession Biological space Dental crowns