At what age does calcification of the third molar initiate? __________________?
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Answer: C. 8 years
Explanation
Calcification of the permanent third molar typically initiates around 8 to 10 years of age. Dental radiographs taken during late childhood reveal initial mineralized cusp tips forming distally. This late start reflects the extended developmental timeline of third molar tooth buds. Third molars are the last permanent teeth to develop and erupt into the oral cavity. Tooth calcification begins with the deposition of mineral salts within the organic matrix. Chronological dental age estimation relies heavily on charting the mineralization stages of molars.
Orthodontists evaluate third molar development stages when planning comprehensive bite corrections. Late development makes these teeth prone to impaction due to limited jaw space. Dental professionals monitor third molar mineralization schedules during routine adolescent checkups. At 8 months of age, primary dentition is still actively erupting rather than forming third molars. At 18 months, primary molar roots are developing, long before permanent third molars start. Starting at 16 years is incorrect because third molar mineralization begins much earlier in childhood.
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