A multicenter outcomes assessment of five-year-old patients with unilateral cleft lip and palate.

Objective: Compare 5-year-old dental arch relationships of patients from three centers with differing primary protocols.

Design: Retrospective study of treatment outcomes using blinded evaluation of dental study casts.

Setting: Three major cleft-craniofacial centers; one (center A) is a free-standing institution, and two (centers B and C) are university hospitals.