You likely only have 24 adult teeth because you've had teeth extracted, or some teeth may not have erupted. Many adults don't have the full set of 32 teeth.
Understanding Adult Teeth
Most adults have 32 teeth, including incisors, canines, premolars, and molars. However, variations are common.
Reasons for Having Fewer Than 32 Teeth
Several reasons can explain why you might have only 24 teeth:
- Extraction of Wisdom Teeth (Third Molars):
- Wisdom teeth are the last to emerge and often cause crowding or impaction.
- Many people have them removed, reducing the total number of teeth by up to four.
- According to reference information, "Some adults have their third molars (wisdom teeth) or premolars extracted to relieve crowding..."
- Extraction of Premolars:
- Premolars are sometimes removed as part of orthodontic treatment to create space.
- This extraction reduces the overall tooth count.
- The reference mentions that extractions can result in only 24-28 teeth in healthy dentition: "...so there may be only 24 to 28 teeth in healthy-appearing dentition."
- Failure of Teeth to Erupt:
- Sometimes, teeth may be present but fail to erupt fully or at all.
- Common with wisdom teeth, this can result in fewer visible teeth.
- The reference also mentions that 3rd molars may not have erupted:"..., or the 3rd molars may not have erupted..."
Typical Adult Teeth Composition (Without Extractions)
The table below illustrates the normal composition of 32 adult teeth:
| Tooth Type | Number |
|---|---|
| Incisors | 8 |
| Canines | 4 |
| Premolars | 8 |
| Molars | 12 |
| Total | 32 |
Factors to Consider
- Dental History: Review your dental history to identify any previous extractions.
- X-rays: Dental X-rays can reveal if any teeth are present beneath the gums but haven't erupted.
- Consult a Dentist: A dentist can provide a definitive answer based on a thorough examination and necessary imaging.
