INDEX CPITN, DMFT & DMFS

INDEX CPITN, DMFT & DMFS

1. INDEX-
CPITN, DMFT & DMFS
By:
RitikKashwani

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-
Infirriin 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
161126
463136
Only one score is given to each sextant. The molars are examined in pairs but only the
highest is recorded.
Keep in mind
16/ 1711 26 / 27
46 / 4731 36 / 37

11. The WHO/CPITN Probe
(Recommended periodontal probe for use with CPITN index)
Uses
Detection of pocket depth
Detection of subgingival calculus
HOW TO 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 periodontiumCode 0
Bleeding observed during
or after probingCode 1
•Presence of calculus or other
plaque retentive factors.Code 2
•Pathological pocket 4 to 5.5
mm in depthCode 3
•Pathological pocket > 6mm
in depthCode 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