Facial and dental features of WBS. (A and B) Skeletal class II malocclusion, mandibular retrognathism, dental biprotrusion, thick lips. (C) deep bite, overjet, screwdriver shaped incisors and diastema. (D and E) thick lips, and small chin. (F) cross-bite, dental biprotrusion, and diastemas. (G and H) front and lateral pictures showing wide mouth, midface flattening. (Reprinted from Castro T, de Paula Martins Santos C, de Oliveira Lira Ortega A, Gallottini M. Oral characteristics and medical considerations in the dental treatment of individuals with Williams syndrome. Special Care in Dentistry. 2019 Mar; 39(2):108–13. DOI: https://doi.org/10.1111/scd.12361, with permission.)