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O bisfenol A em odontologia: os dados actuais
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| PPG_30968 | 340.86 KB | Adobe PDF |
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Abstract(s)
O bisfenol A (BPA) é um composto orgânico da família dos aromáticos usado, principalmente como monómero, há mais de 50 anos na produção de plásticos de policarbonato e de resinas epóxi. Hoje em dia, o bisfenol A é uma substância preocupante merecendo, portanto, uma atenção especial. São diversos os efeitos nocivos conhecidos sobre o organismo humano da exposição ao BPA como no sistema reprodutor, na dentição, no cérebro, no comportamento, no sistema cardiovascular e no sitema imunitário. Os compósitos dentários usados na cavidade oral libertam bis-GMA e BPA imediatamente após à colocação, mas as doses libertadas são normalmente muito baixas para conduzir a efeitos biológicos.
Existem outros materiais como os siloranos, os Ormocer® e cimentos ionómeros de vidro que podem ser boas alternativas. Faltam ainda estudos clínicos para comprovar que esses materiais são melhores que os compósitos sendo estes ainda os mais utilizados em medicina dentária conservadora.
Bisphenol A (BPA) is an organic compound of the aromatic family used mainly as monomer, for more than 50 years in the production of polycarbonate plastics and epoxy resins. Nowadays, bisphenol A is a worrying substance that deserves special attention. There are several known effects on the human body resulting from the exposure to BPA such as in the reproductive system, dentition, brain, behavior, cardiovascular system and in the immune system. In the oral cavity, dental composites release bis-GMA and BPA immediately after placement but released doses are usually too low to lead to biological effects. There are other materials such as silorans, Ormocer® and ionomer glass cements that can be good alternatives. Clinical studies are still neaded to prove that these materials are better than the composites, being these ones still the most used materials in conservative dental medicine.
Bisphenol A (BPA) is an organic compound of the aromatic family used mainly as monomer, for more than 50 years in the production of polycarbonate plastics and epoxy resins. Nowadays, bisphenol A is a worrying substance that deserves special attention. There are several known effects on the human body resulting from the exposure to BPA such as in the reproductive system, dentition, brain, behavior, cardiovascular system and in the immune system. In the oral cavity, dental composites release bis-GMA and BPA immediately after placement but released doses are usually too low to lead to biological effects. There are other materials such as silorans, Ormocer® and ionomer glass cements that can be good alternatives. Clinical studies are still neaded to prove that these materials are better than the composites, being these ones still the most used materials in conservative dental medicine.
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Keywords
Bisfenol A Perturbador endócrino BPA Resinas compostas Bisphenol A Endocrin disruptor BPA Dental composites