The development of the PAR Index (Peer.pptx

description of peer assessment rating index. How to use in orthodontic cases. Assign a score to various occlusal traits which make up a malocclusion
Individual scores are summed to obtain overall total
Difference between pre- and post-treatment scores = degree of improvement

1. The development of the PAR Index (Peer Assessment Rating): reliability and validity S. Richmond et al European Journal of Orthodontics 1992

2. Assign a score to various occlusal traits which make up a malocclusion Individual scores are summed to obtain overall total Difference between pre- and post-treatment scores = degree of improvement

3. 11 components of the PAR Index Upper right segment Upper anterior segment Upper left segment Lower right segment Lower anterior segment Lower left segment Right buccal occlusion Overjet Overbite Centreline Left buccal occlusion

4. Recording zones Buccal segments Anterior segment

5. Displacement scores

6. Crowding assessment using average mesio -distal width

7. Buccal occlusion assessments

8. Overjet measurements

9. Overbite measurements

10. Centreline assessments

11. Conventions General Canines Impactions Incisors Molars

12. Case analysis

13. Conclusion Provides single summary score for all occlusal anomalies Used for all types of malocclusion, treatment modalities and extraction/non extraction cases Degree of improvement