Class I – This form of cavity forms in the occlusal crevices and pits. Class I cavities are those you can see and include those that happen on the buccal and lingual portions of your teeth.

Class II – These cavities form on the proximal areas of the molars and premolars. This damage is generally not visible due to its location and gum tissue.

Class III – This type of cavity occurs on your incisors and canines, but only where there is no ‘angle’ to the tooth. They also occur only on the proximal surface of the front teeth.

Class IV – This form of cavity occurs on the biting surface of the incisors and canines.

Class V – These cavities form below the gumline on the ‘neck’ of the tooth.

Class VI – This form of cavity forms on the tips of the cusps of most teeth and the biting edge of the front teeth.