According to the Pell and Gregory classification, the position of the distal surface of the third molar crown in relation to the anterior border of the ascending ramus is categorized as follows:

Class I: Anterior to the anterior border

Class II: Half of the crown is covered by the anterior border

Class III: The crown is fully covered by the anterior border

5906 x 1654 pixels

50 x 14 cm (300 dpi)

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