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CPITN, DMFT & DMFS Index Overview
- 1. INDEX- CPITN, DMFT & DMFS By: Ritik Kashwani
- 2. Contents Index CPITN Index DMFT Index DMFS Index Definition, ideal requisites, classification and uses
- 3. What is an index? According to Russel A.L., An index is defined as a numerical value describing the relative status of a population on a graduated scale with definite upper and lower limits, which is designed to permit and facilitate comparison with other populations classified by the same criteria and methods.
- 4. IDEAL REQUISITES OF AN INDEX IDEAL REQUISITES Clarity, Simplicity and objectivity Validity Reliability Quantifiability Sensitivity Acceptability
- 5. Index – Purpose and uses For Individual • Reveal the effectiveness of present oral hygiene practices. • Motivate the person for preventive and personal care. In Research • Measure the effectiveness of specific agents or mechanical devices in prevention, control and treatment of oral conditions. In Community Health • Show the prevalence and trends of particular condition within a given population. • Assess the needs of a community.
- 6. Depending upon the extent to which areas of oral cavity are measured Full mouth indices E g: Russel’s periodontal index Simplified indices E g: Oral hygiene index- simplified Special categories index Simple index Cumulative index E g: DMF Index Depending upon the direction in which the scores can fluctuate Reversible E g: Plaque index Irreversible E g: Caries index Classification of index According to the entity they measure Disease Index Symptom index Treatment index
- 7. Community Periodontal Index Of Treatment Needs (CPITN) Who developed CPITN?? It was given by Jukka Ainamo, David Barmes., George Beagrie.,Terry Cutress., Jean Martin. And Jennifer Sardo- Infirri in 1982 Joint working committee (W.H.O./ F.D.I.)
- 8. Scope and purpose of CPITN Index Irreversible Reversible The CPITN records the common treatable conditions, namely • Periodontal pockets • Gingival inflammation • Dental calculus • Other plaque retentive factors. The index is recommended for epidemiological surveys of periodontal health.
- 9. How to proceed? • The dentition is divided into sextants. • When only one tooth is left in a sextant, it is included in the adjacent sextant. • The highest score in each sextant is identified after examining of index teeth. 17-14 13-23 24-27 47-44 43-33 34-37
- 10. Index Teeth Age> 20 years • 10 teeth are examined Age< 20 years • 6 teeth are examined 16 11 26 46 31 36 Only one score is given to each sextant.The molars are examined in pairs but only the highest is recorded. Keep in mind 16/ 17 11 26 / 27 46 / 47 31 36 / 37
- 11. The WHO/CPITN Probe (Recommended periodontal probe for use with CPITN index) Uses Detection of pocket depth Detection of subgingival calculus HOWTO USE? Working force: < 20 gm Direction of insertion: Along the long axis of tooth
- 12. Types of CPITN probe CPITN-E Probe CPITN-C Probe 0.5 mm 3.5 mm 5.5 mm 0.5 mm 8.5 mm 11.5 mm 3.5 mm 5.5 mm
- 13. Coding criteria • No periodontal disease • Healthy periodontium Code 0 Bleeding observed during or after probing Code 1 • Presence of calculus or other plaque retentive factors. Code 2 • Pathological pocket 4 to 5.5 mm in depth Code 3 • Pathological pocket > 6mm in depth Code 4
- 14. Treatment needs Improvement of personal oral hygiene Professional cleaning and oral hygiene instructions Scaling and root planning Deep scaling, root planning and complex surgical procedures No need for treatment
- 15. Calculation for CPITN Index 1 1 0 1 1 1 Code of the subject : 1 Below is an example showing the score obtained during examination of a subject. Treatment need :TN - 1
- 16. CPITN Index Advantages • Simplicity • Speed • International Uniformity Disadvantages • Partial recording • Exclusion of some important signs of past periodontal breakdown.
- 17. DMFT Index
- 26. DMFS Index