Which tooth is listed as the most frequently impacted according to the provided order?

Which tooth is listed as the most frequently impacted according to the provided order?

• A. Mandibular third molars
• B. Maxillary third molars
• C. Maxillary canines
• D. Mandibular canines

Answer: (A)

Varying eruption timing and space constraints drive why certain teeth become impacted. Third molars, especially in the lower jaw, are the most prone because they erupt late and there is often insufficient space behind the second molars in the mandible. Their eruption path is long and tends to be blocked by neighboring teeth or bone, making impaction more common than with other teeth. In the typical prevalence order, the mandibular third molar sits at the top, followed by the maxillary third molar, then the maxillary canine, and finally the mandibular canine. Therefore, the most frequently impacted tooth in that order is the mandibular third molar.

Varying eruption timing and space constraints drive why certain teeth become impacted. Third molars, especially in the lower jaw, are the most prone because they erupt late and there is often insufficient space behind the second molars in the mandible. Their eruption path is long and tends to be blocked by neighboring teeth or bone, making impaction more common than with other teeth. In the typical prevalence order, the mandibular third molar sits at the top, followed by the maxillary third molar, then the maxillary canine, and finally the mandibular canine. Therefore, the most frequently impacted tooth in that order is the mandibular third molar.