Version May 2024
| Type | Clinical appearance | Enamel thickness | Radiographic appearance | Inheritance |
| Hypoplastic (type 1) | Crown size varies from small to normal, small teeth may lack proximal contacts, color varies from normal to opaque white/yellow-brown | Varies from thin and smooth to normal thickness with grooves, furrows, or pits | Enamel has normal to slightly reduced contrast, thin | Autosomal dominant, recessive, or X-linked |
| Hypomaturation (type 2) | Varies from creamy opaque to marked yellow or brown, surface of teeth soft and rough, dental sensitivity and open bite common | Normal thickness with enamel that often chips and abrades easily | Enamel has contrast similar to dentin, unerupted crowns have normal morphology | Autosomal dominant, recessive, or X-linked |
| Hypocalcified (type 3) | Opaque white to yellow-brown, soft and rough enamel surface, dental sensitivity and open bite common, heavy calculus formation common | Normal thickness with enamel that often chips and abrades easily | Enamel has contrast similar to or <dentin, unerupted crowns have normal morphology | Autosomal dominant, recessive |
| Hypomaturation/ hypoplasia/ taurodontism (type 4) | White/yellow-brown mottled, teeth can appear small and lack proximal contact | Reduced, hypomineralized areas and pits | Enamel contrast normal to slightly >dentin, large pulp chambers | Autosomal dominant |
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