Recently, the Index of Treatment Need
(IOTN) was proposed by Brook and Shaw  in the United Kingdom as a scoring system for estimating treatment need of patients with various degrees of malocclusion.
"Access to treatment is determined in accordance with the Modified Index of Treatment Need
Periodontal status of orthodontic patients and the relationship between dental aesthetic index and community periodontal index of treatment need
, American Journal of Orthodontics and Dentofacial Orthopedics, v.
At one time all children and some adults were eligible for treatment on the NHS but now orthodontists have to stick to the eligibility criteria set out in the Index Of Treatment Need
Perception of dental appearance using Index of Treatment Need
(Aesthetic Component) assessments.
Teeth present and visible caries were recorded, periodontal conditions were measured using a Community Periodontal Index of Treatment Need
(CPITN) probe and denture fit and hygiene were assessed where appropriate.
Majority of the studies on this subject are reported by Orthodontic researchers and they use pictures of orthodontic patients.10,11,12,13 These studies use Index of treatment Needs
(IOTN) which displays pictures of varying degrees of mal-occlusion.
Development of the World Health Organization (WHO) community periodontal index of treatment needs
Patients of chronic periodontitis were selected using Community Periodontal Index of Treatment Needs
(CPITN) according to inclusion and exclusion criteria.
The Community Periodontal Index of Treatment Needs
(CPITN) developed and proposed by World Health Organisation, has been widely used to determine periodontal treatment needs.
Community Periodontal Index of Treatment Needs
(CPITN) developed and proposed by WHO, has been widely used to determine needs [Cutress et al., 1987].
Application of the community periodontal index of treatment needs
(CPITN) in a group of 45-54-year-old German factory workers.