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Oral Health Training & Calibration Programme: Debris & Calculus Indices

Join our training to master debris and calculus indices calibration. Learn essential principles and practice techniques. Challenge examples included.

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Oral Health Training & Calibration Programme: Debris & Calculus Indices

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  1. Oral Health Training & Calibration Programme Debris & Calculus Indices

  2. Calibration Challenge Examples • Debris removed by first examiner may lead to lower score by second examiner • Therefore the training will focus on the technique rather than actual score

  3. Principles • -Sensing force - 20 grams • test this by placing the probe tip under the thumb nail and press until blanching occurs • -Sensing subgingival calculus • the lightest possible force that will allow movement of the probe along the tooth surface should be used

  4. Debris Index - sextants

  5. Substitutions • If both the 6 and 7 are present record the worst score of the 2 teeth. • If only the 6 or 7 is present score the one present only. • If both the 6 and 7 are missing use the 4 and 5 and record the worst score of the 2 teeth. • If the 6 and 7 and one or both of the bicuspids are missing then a score for the area cannot be determined (i.e. if only one premolar is present for a posterior sextant, then you do not score). • For missing upper incisors the order of substitution is 11, 21, 12, 22, 13 23 • For missing lower incisors the order of substitution is 31, 41, 32, 42, 33, 43

  6. Occlusal view: lower incisors Buccal Debris Index – On All Ages • Only score fully erupted teeth • Drag probe across tooth: Look for plaque or debris piling up or extrinsic staining • Crowned teeth and those reduced in height due to caries, restoration or trauma are excluded, use alternate tooth

  7. 0. No soft debris or stain 1. Less than 1/3 of surface covered 2. 1/3 to 2/3 of surface covered 3. More than 2/3 of surface covered 4. Primary and permanent teeth missing or unscoreable 5. Teeth unavailable for debris and calculus e.g. crowned Debris Index 0 1 2 3 NB Extrinsic stain also counted as debris

  8. Extrinsic stain <1/3

  9. Calculus • 0. No calculus • 1. Less than 1/3 of surface covered • 2. 1/3 to 2/3 of surface covered or flecks of subgingival calculus OR both • 3. More than 2/3 of surface covered or heavy band of subgingival calculus OR both 0 1 2 3

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