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Questions and Answers
What is the primary purpose of a dental index?
What is the primary purpose of a dental index?
What is a characteristic of a reliable dental index?
What is a characteristic of a reliable dental index?
What is the DMF index used to measure?
What is the DMF index used to measure?
What is the UTN index used to measure?
What is the UTN index used to measure?
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What is a criterion for selecting a dental index?
What is a criterion for selecting a dental index?
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What is the RCI used to measure?
What is the RCI used to measure?
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What is a reason why new dental indices were developed?
What is a reason why new dental indices were developed?
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What is the formula for the DMF index?
What is the formula for the DMF index?
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What is a characteristic of a valid dental index?
What is a characteristic of a valid dental index?
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What is an example of a plaque and oral hygiene index?
What is an example of a plaque and oral hygiene index?
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Study Notes
Dental Indices
- A dental index is an objective mathematical description of a disease or condition based on carefully determined criteria under specified circumstances.
- Properties of an index:
- Validity: accurately reflects the extent or degree of the disease or condition.
- Reliability: gives the same results with limited tolerance each time it is applied.
- Importance of an index: used to compare oral health status of a population following intervention and treatment.
Criteria for Selecting an Index
- Choose an index that addresses specific information of interest.
- The index should be suitable for the population.
- Choose an index that provides valid estimates of disease in the population.
Reasons for Developing New Indices
- To compare oral health status of a population following intervention or treatment.
- Population shifts and changes in disease experience.
Types of Dental Indices
- Caries indices:
- DMF (Decay, Missing and Filled Index)
- UTN (Unmet Restorative Needs)
- RCI (Root Caries Index)
- Plaque and oral hygiene indices:
- Oral Hygiene Index Simplified (OHI-S)
- Indices of periodontal health:
- Russell's Periodontal Index (RPI)
- Gingival Index of Loe and Silness
- NIDR Gingival Index
- Community Periodontal Index of Treatment Needs (CPITN)
Oral Hygiene Index Simplified (OHI-S)
- Measures plaque and calculus in 2 components:
- Debris Index
- Calculus Index
- Scores are added to have a single score.
- Index teeth: 16 bu, 11 la, 26 bu, 46 li, 31 la, 36 li.
Russell's Periodontal Index (RPI)
- Assigns a numeric score to each tooth in the mouth and takes an average of these values for a Periodontal Index score.
- Index teeth: 16, 21, 24, 44, 41, 36.
- Range of Russell score: 0 (no inflammation or disease evident) to 8 (advanced destruction with loss of masticatory function).
Gingival Index of Loe and Silness
- Evaluates gingival health.
- Uses the cervico-enamel junction (CEJ) as a reference point and a special periodontal probe, the National Institute for Dental Research (NIDR) probe.
- Measures loss of attachment as the sole indicator of periodontal health and disease.
- Scoring is on a scale of 0 to 3.
Community Periodontal Index of Treatment Needs (CPITN)
- Designed for epidemiologic surveys of periodontal health.
- Uses the CPITN-E probe and 10 index teeth that represent 6 segments of the mouth.
- Assesses pockets, bleeding, and plaque retentive factors (calculus and overhanging restorations).
- Designed to assess periodontal treatment needs rather than periodontal status.
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Description
This quiz assesses knowledge on the Oral Hygiene Index Simplified (OHI-S) of Greene, which measures plaque presence and oral cleanliness. It evaluates individual behavior change in oral hygiene and tracks population-level changes.
