Have you been told you need a filling? Well not all fillings are created equal. Some offices simply plug holes with material which is convenient for them but does a great disservice to the patient. Without proper technique and developing appropriate anatomy the new filling will be destine to go down the same route as the old tooth.
This filling was placed by another provider and demonstrates the issues that can arise from a lack of anatomy. The groves of the tooth are sharp and deep and meet the filling which does not have groves creating an area to pack food and plaque. This area is entirely uncleansable and in this case resulted in recurrent tooth decay.
Here you can see a tooth with the cavity removed prior to being filled with material. The arrow points to a very deep grove that extends almost to the bottom of the cavity. If simply filled this groove would act as a gutter that would funnel food and bacteria deep within the tooth and under the new filling.
Here is the final restoration of the above tooth. First a base of glass ionomer is laid down. This material goes in liquid to completely seal the aforementioned groove and will take up fluoride from the toothpaste and water you drink and re-release it into the most vulnerable areas of the tooth preventing a cavity from recurring. Then the tooth is filled with alloy in this case and the grooves matched to the originals. The matching of the original anatomy provides a surface that is easily cleaned and appropriately recreates the lost tooth structure. While metal fillings are not the most aesthetic they do last longer than white fillings, are more resistant to fracture and better resist new cavities forming at the junction of tooth and filling.
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