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Surgery General 1a5665a9

According to Pederson difficulty index, what is the difficulty level of an impacted tooth which is lying horizontally, at Level III and position C?

A
Minimum difficulty
B
Moderate difficulty
C
Very difficult
D
Not impacted
High-Yield Explanation
Pederson difficulty index based on Pell and Gregory classification: (A) Spatial relationship: Mesioangular = 1 Horizontal = 2 Vertical = 3 Distoangular = 4 (B) Depth: Position A (highest portion of crown of 8 is above occlusal line of 2nd molar) =1 Position B (higher portion of crown of 8 is above CEJ of 2nd molar) = 2 Position C (highest portion of crown of 8 is below CEJ of 2nd molar) = 3 (C) Relation with ascending ramus: Level 1 (mesiodistal width between 7 and ascending ramus is sufficient to accommodate mesiodistal width of 8) = 1 Level 2 (space slightly short to accomodate the entire mesiodistal width of 8) = 2 Level 3 (space very less to accomodate the entire mesiodistal width of 8 – tooth almost within ascending ramus ) = 3 Difficulty score = A+B+C Score 3-4 = minimum difficulty Score 5-7 = moderate difficulty Score 8-10 = very difficult. Other difficulty indices are: WHARFE Score, Parant and Modified Parant scale and using WAR lines.

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