Dental Hygiene Program

Patient Difficulty Determination

Department of Dental Hygiene

Baltimore College of Dental Surgery

University of Maryland at Baltimore

Guidelines for Determining Case Difficulty Level

Accretion Levels Stain
L M H
light colored linear and/or diffuse X
dark colored linear and/or diffuse X X
brown/black leathery X
Supramarginal Calculus
L M H
light, scattered spicules X
fine, continuous band of calculus at gingival 1/3 X
veneer of calculus covering up to 2/3 of the clinical crown x x x
continuous band of dense calculus covering up to 2/3 clinical crown X X
bulky, ledge-like mass deposit covering up to 2/3 of clinical crown X
gross, bulky mass (“calculoma”) may or may not extend to occlusal surface X
Submarginal Calculus
L M H
discrete, scattered spicules X X
isolated projection/individual nodules X
continuous band of dense calculus X X
isolated areas of burnished/veneer calculus X X
bulky, ledge-like mass X

Instrumentation associated with Case Difficulty Levels*

L- Light scaling required, or may include minimal root planing
M- Moderate scaling required including
H- Moderately extensive/extensive scaling required and/or generalized

*Difficulty level is determined by assessing both the quantity and quality