Early Childhood Caries (ECC) affects the teeth that erupt first, those least protected by saliva, and those with grooved surfaces. Recall that the typical pattern of primary tooth eruption is as follows. (Refer to
Chapter 2: Dental Development > Tooth Eruption for
more information.)
 |
| |
1. |
Lower (mandibular) central incisors |
| |
2. |
Upper central incisors |
| |
3. |
Lateral incisors |
| |
4. |
First molars |
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5. |
Canines (cuspids) |
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6. |
Second molars |
As several pictures in the
Chapter 2 Photo Gallery illustrate, ECC tends to first affect the upper (maxillary) incisors because they erupt earliest, then the primary molars. The molars become involved because of their grooved surfaces. Food easily becomes lodged in the pits and fissures, which are difficult areas to clean with a toothbrush.
The canines tend to be spared because they are smooth teeth that erupt later, whereas the lower teeth are better protected by saliva and the tongue.