Open Access

Table II

Orofacial features of Williams–Beuren syndrome.

INTR oral Extra oral
Angle Class II and III Malocclusion Prominent thyroid cartilage
Open/cross bites Full lips
Mild micrognathia Wide mouth
Anterior crossbite Widened mandibular angle
Osteosclerotic changes in the premolar- molar Small chin
Lamina dura Periorbital fullness (puffy eyes)
Folded and thickened buccal mucosa Long face
Prominent accessory labial frenula Medial eyebrow flare
Enamel hypoplasia Flat midface
Enamel hypomineralization Epicanthal folds
Microdontia Long philtrum
Small tooth roots Depressed nasal bridge
Delayed mineralization Broad nasal tip
Invaginated incisors Anteverted nostrils
Tongue thrusting, Curly blond hair
Excessive interdental spacing  
Tapered or screwdriver shaped incisors  
Tooth agenesis  
Higher incidence of gingival and periodontitis  
Cleft palate (rare)  

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