Dental Education Lecture: Special Cavities
Special cavities are often found in the teeth in the corner of the mouth (Fig.1*). They are located near the gum line (Fig.2 arrowheads). They are usually not caused by germs. In stead, they are kind of wear and tear. They can be very large (Fig.3 arrowheads; from the same patient) and very deep, approaching nerve (arrowheads of Fig.4 (the same tooth as Fig.3) ). You may experience tooth sensitivity to cold, hot, sour and/or toothbrush. White filling (F in Fig.5,6) can help you reduce symptoms and slow down the wear and tear. Left untreated, special cavities may gradually make one of your teeth so thin and weak that it breaks off when you accidently bite on a piece of sand inside rice or bread. Or your nerve gets exposed and you are going to have severe toothache.
Xin Wei, DDS, PhD, MS 1st edition 01/07/2011, last revision 01/07/2011