Quigley and Helm proposed a system for scoring dental plaque. This was modified by Turesky et al to more explicitly describe mild to moderate plaque deposits.
Plaque Scoring System for Quigley and Hein
flecks of stain at the gingival margin
definite line of plaque at the gingival margin
gingival third of surface
two thirds of surface
greater than two thirds of surface
Modified Plaque Scoring System of Turesky et al
separate flecks of plaque at the cervical margin of the tooth
a thin continuous band of plaque (up to 1 mm) at the cervical margin of the tooth
a band of plaque wider than 1 mm covering less than one third of the crown of the tooth
plaque covering at least one-third but less than two thirds of the crown of the tooth
plaque covering two-thirds or more of the crown of the tooth
Scoring by the Turesky modification:
(1) all teeth assessed except third molars (maximum number 28)
(2) a staining solution is used to show plaque deposits (Quigley and Turesky used basic fuchsin, Gordon used erythrosine)
(3) both the facial and lingual surfaces examined (maximum number 56)
(4) a score is assigned to each facial and lingual nonrestored surface
total score =
= SUM(scores for all facial and lingual surfaces)
= (total score) / (number of surfaces examined)
• A score of 0 or 1 is considered low.
• A score of 2 or more is considered high.
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