The Community Periodontal Index of Treatment Needs (CPITN) is an epidemiologic tool developed by the World Health Organization (WHO) for the evaluation of periodontal disease in population surveys. It can be used to recommend the kind of treatment needed to prevent periodontal disease.
Teeth examined: 2 methods of selection:
(1) sextants: 14 teeth on the maxilla and 14 teeth on the mandible, divided into 3 segments on each
(1a) FDI notation maxilla: (1) 17, 16, 15, 14; (2) 13, 12, 11, 21, 22, 23; (3) 24, 25, 26, 27
(1b) FDI notation mandible: (4) 47, 46, 45, 44; (5) 43, 42, 41, 31, 32, 33; (6) 34, 35, 36, 37
(1c) Third molars are not used unless they function in place of the second molars.
(2) use of index teeth: 5 teeth on the maxilla and 5 teeth on the mandible
(2a) FDI notation maxilla: (1) 17, 16; (2) 11; (3) 26, 27
(2b) FDI notation mandible: (4) 47, 46; (5) 31; (6) 36, 37
Dental evaluation:
(1) A special probe is used to evaluate the depth of the dental sulcus.
(2) The teeth are examined for supragingival or subgingival calculus.
(3) Any bleeding after gentle probing is noted.
Evaluation:
(1) The worst finding in each sextant is coded according to the table below..
(2) The maximum code for the entire mouth is used for the treatment recommendation.
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Findings
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Code
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pathologic pockets >= 6 mm deep
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4
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pathologic pockets 4-5 mm deep
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3
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supragingival or subgingival calculus
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2
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gingival bleeding after gentle probing
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1
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no signs of periodontal disease
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0
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Maximum Score
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Treatment Recommendation
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0
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no need for additional treatment
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1
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need to improve personal oral hygiene
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2
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need for professional cleaning of teeth, plus improvement in personal oral hygiene
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3
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need for professional cleaning of teeth, plus improvement in personal oral hygiene
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4
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need for more complex treatment to remove infected tissue
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