Questions and Answers
What is the formula for calculating the width of the attached gingiva?
How do you measure Clinical Attachment Level (CAL)?
Measure from a fixed point, usually the CEJ, to the base of the sulcus or periodontal pocket.
To measure CAL when recession is present, you must add the probing depth and the gingival margin level: Probing depth + _____ = clinical attachment level.
gingival margin level
What is the significance of CAL?
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Match the following notations with their meanings regarding the position of the gingival margin:
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What is the probing depth in the given example where the probing depth is 6MM and the gingival margin is 0MM?
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In the scenario where probing depth is 9MM and gingival margin is -3MM, what is the clinical attachment level?
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What does CAL stand for?
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What is the main disadvantage of probing depths?
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Study Notes
Attached Gingiva Width Measurement
- To calculate attached gingiva width, measure from the gingival margin to the mucogingival junction.
- Measure pocket depth at the same location to ensure accuracy.
- Subtract the pocket depth from the total width of the attached gingiva for a precise measurement.
Clinical Attachment Level (CAL) Measurement
- Start with measuring pocket depth, then assess recession present.
- Add pocket depth and recession to determine Clinical Attachment Level (CAL).
Mucogingival Junction (MGJ) Measurement
- For identifying MGJ, measure distal of tooth 15 as most recession occurs in that area.
Understanding CAL
- Represents the estimate of periodontal support around the tooth using a periodontal probe.
- Measured from a fixed point, often the Cementoenamel Junction (CEJ), to the base of the sulcus or pocket.
Probing Depths
- Probing depth is the measurement from the gingival margin to the base of the periodontal sulcus or pocket.
Probing Depth Limitations
- Changes in gingival margin position can affect probing depth readings due to tissue swelling or recession.
Reliability of CAL
- CAL is noted for being a more accurate indicator of periodontal support compared to probing depth.
- It enables monitoring of periodontal changes over time and is essential for distinguishing between gingivitis and periodontitis.
Calculating CAL Under Specific Conditions
- If the gingival margin is slightly coronal to the CEJ, probing depth equals CAL.
- If the gingival margin is significantly coronal to the CEJ, CAL is calculated by subtracting the gingival margin level from the probing depth.
- In the presence of recession, CAL is calculated by adding the probing depth and gingival margin level.
Gingival Margin Position Notation
- Notation system indicates gingival margin positions:
- (0) indicates free gingival margin slightly coronal to the CEJ.
- (-) indicates free gingival margin significantly covering CEJ.
- (+) indicates free gingival margin apical to CEJ.
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Description
This quiz focuses on essential measurements in clinical dentistry, particularly pertaining to the assessment of the attached gingiva and Clinical Attachment Level (CAL). Test your knowledge on the formula for calculating the width of attached gingiva and other related concepts. Perfect for dental students and professionals alike!