J. Orthod.
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British Journal of Orthodontics, Vol 22, 171-178, Copyright © 1995 by British Orthodontic Society

ARTICLES

Long-term evaluation of treated class II division 1 malocclusions utilizing the PAR index

OD Otuyemi and SP Jones
Department of Orthodontics, Eastman Dental Hospital, London, UK.

The PAR Index was used to evaluate treatment and long-term post- retention results obtained from 50 Class II division 1 malocclusions. Dental casts were used to record the occlusions pre- and post- treatment, as well as 1 and 10 years post-retention. The results suggested a high treatment standard, as indicated by mean percentage PAR score reduction. However, maintenance of post-treatment results 1 and 10 years post-retention was only achieved in 60 and 38 per cent of cases, respectively. The major factor involved in this deterioration appeared to be late lower anterior crowding.




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Copyright © 1995 British Orthodontic Society.