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Dr. Mark Osmond: Your answers about dental fillings
Written by Dr. Mark Osmond   
Friday, 24 February 2012 16:03
▶▶ Why would I need a filling?
A filling is required when there is a cavity (hole) in the tooth. A hole can occur for several reasons.
1) Decay- when sugars and/ or acid have been allowed to build up and attack the enamel of the teeth
2) Abrasion- when the a specific area of the tooth has been worn away
3) Erosion- when the enamel has begun to dissolve due to the direct effects of acid on the tooth. This can be seen for example if you consistently eat lots of citrus fruits or suffer with stomach acid reflux.

▶▶ Are metal fillings bad for you?
Metal fillings contain mercury which is known to be toxic. I consider them to be an old-fashioned treatment option and nowadays there are certainly superior alternatives. Personally I have not placed a metal, mercury- based filling for over 15 years. The white (composite) fillings do not contain mercury, are as strong as metal fillings and aesthetically are more attractive.

▶▶ Should I change all my metal fillings for tooth colored (white) ones? There are two reasons to change a metal filling. Firstly, if the metal filling is breaking down and so potentially releasing the amalgam (metal)particles into the body. In this case it is medically advisable to have the fillings replaced. At this point I would recommend changing to white fillings. The second reason is cosmetic and is a personal choice in order to achieve a more natural look. However, if you metal fillings are smooth, shiny and not breaking down there is no immediate need to change them.

▶▶ Are white fillings as strong as metal ones?
Yes. The current generation of tooth colored fillings have excellent strength, are bonded to the tooth and are long lasting.

▶▶ What is fissure sealing?
This is a preventative treatment whereby a liquid filling material is sed to fill in the narrow fissures (grooves) in the molar teeth. It works by preventing material getting into these hard to clean places and it is proven to reduce the risk of dental decay. It is routinely recommended for children around the age of six or seven, when the first adult molars are completely erupted and can be a useful treatment for some adults.

 

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