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Questions and Answers
What does Class I tooth mobility indicate?
What does Class I tooth mobility indicate?
- Tooth has no mobility
- Tooth can be moved less than 1mm in either direction (correct)
- Tooth can be moved 1mm or more in either direction
- Tooth can be moved only in the occlusoapical direction
What does Class II tooth mobility indicate?
What does Class II tooth mobility indicate?
- Tooth can be moved less than 1mm
- Tooth can be moved 1mm or more horizontally
- Tooth can be moved 1mm or more with no vertical mobility (correct)
- No mobility in any direction
What does Class III tooth mobility indicate?
What does Class III tooth mobility indicate?
- No mobility in any direction
- Tooth can be moved only in the vertical direction
- Tooth can be moved less than 1mm
- Tooth can be moved 1mm or more horizontally and has vertical mobility (correct)
What does Grade I furcation mean?
What does Grade I furcation mean?
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What does Grade II furcation indicate?
What does Grade II furcation indicate?
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What does Grade III furcation indicate?
What does Grade III furcation indicate?
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What does Grade IV furcation indicate?
What does Grade IV furcation indicate?
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Study Notes
Tooth Mobility Classification
- Class I: Tooth movement is limited to less than 1mm in the buccolingual or mesiodistal direction.
- Class II: Tooth movement is 1mm or more in the buccolingual or mesiodistal direction; no vertical mobility observed.
- Class III: Tooth can be moved 1mm or more in both buccolingual or mesiodistal directions, with additional vertical mobility present.
Furcation Grades
- Grade I: Probe enters the concavity of the furcation; bone between the roots remains intact, indicating early furcation involvement.
- Grade II: Probe can access the furcation area, indicating more significant involvement without complete penetration through the roots.
- Grade III: Probe can be passed completely between the roots through the entire furcation, signifying advanced furcation involvement.
- Grade IV: Similar to Grade III but includes exposure due to gum recession, typically following periodontal therapy.
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