CVD (Chemical Vapor Deposition) – solução para controle de temperatura durante preparo cavitário?
CVD (Chemical Vapor Deposition) - solution for control of temperature during cavity preparation?
Oliveira, Maria Antonieta Veloso Carvalho de; Biffi, João Carlos Gabrielli; Dechichi, Paula
Rev. odontol. UNESP, vol.38, n6, p.363-369, 2009
Resumo
Os procedimentos restauradores em Odontologia utilizam brocas, turbinas de alta rotação, laser e novas tecnologias, como as pontas diamantadas obtidas pelo processo de deposição química a vapor (CVD). O uso incorreto desses métodos pode gerar aquecimento excessivo e agredir o complexo dentinopulpar, provocando lesões que variam de leve à grave e até mesmo a necrose da polpa. O objetivo deste trabalho foi revisar e discutir o aumento de temperatura no complexo dentinopulpar durante o preparo cavitário, causado pelas brocas diamantadas convencionais usadas em turbina de alta rotação, pelo laser e pelas pontas diamantadas CVD acopladas ao ultrassom. Treze estudos foram encontrados após busca na base de dados PubMed no período de 1998 a 2009, sendo quatro relacionados a brocas diamantadas em turbinas de alta rotação, sete acerca de sistemas a laser e dois sobre as pontas CVD. De acordo com a literatura científica pesquisada, pode-se concluir que nenhum dos métodos aumenta a temperatura a ponto de causar injúria pulpar irreversível. Porém, não há estudos suficientes publicados para se afirmar que as pontas diamantadas CVD apresentam-se como a solução para controle do aumento de temperatura durante o preparo cavitário.
Palavras-chave
Preparo cavitário, polpa dentária, CVD (Chemical Vapor Deposition),
laser, brocas diamantadas
Abstract
The restorative procedures in dentistry use burs, high-speed handpieces, laser and new technologies such as diamond burs obtained by the process of chemical vapor deposition (CVD). The misuse of these methods can generate excessive heat, and harm the pulpodentin complex, causing injuries ranging from mild to severe and even necrosis of the pulp. The objective was to review and discuss the temperature increase in pulpodentin complex during cavity preparation, caused by conventional diamond burs used in high-speed handpieces, laser and the CVD ultrasound diamond burs. Thirteen studies were found after a search on PubMed database from 1998 to 2009, and 4 were related to diamond burs at high-speed handpieces, 7 about laser systems and 2 about the CVD burs. According to the researched literature, we can conclude that none of the methods increases the temperature to the point of causing irreversible injury on the pulp. However, there are not enough published studies that confirm CVD diamond burs as the solution to controlling the temperature increase during cavity preparation.
Keywords
Cavity preparation, dental pulp, CVD (Chemical Vapor Deposition), laser, diamond burs.
References
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