obin sequence is the phenotypic triad of micrognathia, glossoptosis, and airway obstruction with or without a cleft palate. 1,2 Robin sequence and the presence of a cleft palate have effects on feeding, hearing, and speech in the long term. [3][4][5][6][7] Most patients with Robin sequence may be successfully managed in the perinatal period with prone positioning and other noninvasive airway measures. 2,[8][9][10][11] Those in whom conservative management fails may be candidates for surgical manipulation such as mandibular distraction osteogenesis (MDO), tongue-lip adhesion, or tracheostomy. 12,13 The use of MDO for infants with Robin sequence has been shown to improve the feeding and breathing ability of affected infants. 14,15 Despite its recent popularity, there is a paucity of comprehensive evaluation of long-term sequelae after MDO-especially speech outcomes. In a matched case-control study, Hardwicke et Background: The aim of this study was to compare midchildhood speech outcomes in patients with nonsyndromic Robin sequence with cleft palate (RSCP) treated with mandibular distraction osteogenesis (MDO) to patients with nonsyndromic Veau class I and Veau class II cleft palate (CP). Methods: The authors performed a retrospective review of patients with nonsyndromic Robin sequence from 2000 to 2017, comparing those who underwent MDO to patients with nonsyndromic CP. Demographics, operative details, length of hospital stay, complications, and Pittsburgh Weighted Speech Scale scores were collected.Results: Thirty-three patients met inclusion criteria in the MDO group with 127 patients as controls. Despite similar median age (RSCP, 4.5 years; CP only, 4.6 years) and Veau cleft type at early evaluation, there was a significant increase in composite Pittsburgh Weighted Speech Scale score within the MDO cohort (P ≤ 0.002); specifically, with worse visible nasal emission (P ≤ 0.007), hypernasality (P ≤ 0.001), and compensatory articulation (P ≤ 0.015). However, these differences were not present at age-matched midchildhood evaluation (median, RSCP, 6.5; CP only, 7.1; P ≥ 0.092). Median age-matched follow-up was 6.4 years in the MDO group and 7.1 years in the control group (P ≥ 0.136). There was also no difference in the rate of secondary speech surgery at midchildhood evaluation (P ≥ 0.688). Conclusions: The authors' retrospective comparison of speech outcomes in RSCP versus CP only demonstrates no difference in midchildhood speech, conflicting with recent reports. Although patients with Robin sequence treated with MDO had worse visible nasal emission, hypernasality, and compensatory articulation in early childhood, this appears to have resolved in the interim without additional intervention. Longitudinal follow-up is needed to fully understand the speech ramifications of RSCP.