There are several types of dental fillings. Teeth can be filled with gold; porcelain; silver amalgam (which consists of mercury mixed with silver, tin, zinc, and copper); or tooth-coloured materials like composite resin fillings. There is also a material that contains glass particles and is known as glass ionomer. This material is used in ways similar to the use of composite resin fillings.
New white fillings are as long-lasting as silver amalgam fillings; however, the life expectancy depends of the location and how heavily the teeth bite together.
Most composite resins available today, contain BPA an endocrine disrupting chemical or related compounds.
Research suggests that BPA may affect how reproductive systems and brains develop.
Exposure to this chemical has also been linked to a wide variety of problems, including early puberty, metabolic disorders such as obesity and diabetes, heart disease, infertility, thyroid dysfunction, and some cancers.
Under normal circumstances, human body is able to excrete BPA pretty well, but with excessive exposure, it might not be possible to clear it so efficiently.
BPA is a fat-soluble compound and may accumulate in the fatty tissues of human body.
It’s a good idea to minimize the amount of BPA exposition, including that in dental work.
In some cases, like people with chemical sensitivities or chronic illnesses, further materials testing can be considered to help to decide which material would be most appropriate for filling teeth.
It’s important to have in mind that there is no material that is 100% bio-compatible and ideal for everyone or every type of repair.
Always discuss with your dentist your dental treatment options.