Orthodontic treatment protocol versus Peer Assessment Rating: Assessing the quality of orthodontic treatment.

Objective: To apply the Peer Assessment Rating (PAR) to cases that have been assessed by the NHS Business Service Authority (NHSBSA) using the orthodontic treatment protocol (OTO), then compare the NHSBSA outcome assessment with weighted (W) and unweighted (U) PAR scores.

Design: Cross-sectional study.

Setting: UK.