ABNORMALITIES of TEETH

Abnormalities of Teeth

Environmental abnormalities of teeth

Developmental abnormalities of teeth

Environmental alterations of teeth

• Developmental tooth defects• Postdevelopmental structure loss• Discolorations of teeth• Localized disturbances in eruption

Visible environmental enamel defects can be classified into one of three patterns:

• Hypoplasia

• Diffuse opacities

• Demarcated opacities

Factors associated with tooth defects

Environmental effects on tooth structure development

Turner hypoplasia

Molar-Incisor hypomineralization

Hypoplasia caused by antineuplastic therapy

Dental fluorosis

Syphlititic hypoplasia

Post developmental loss of tooth structure

Attrition

Abrasion

Erosion

Abfraction

Internal resorption

Exteranal resorption

Environmental discoloration of teeth

Environmental discoloration of teeth

Extrinsic stains

Intrinsic stains

Localized disturbances in eruption

Impaction

Ankylosis

Developmental alterations of teeth

Developmental alterations in the number of teeth

Anodontia

Hypodontia

Oligodontia

Hyperdontia

Supernumerary teeth• Supplemental• Rudimentary

Developmental alterations in the size of teeth

Microdontia

macrodontia

Developmental alterations in the shape of teeth

Gemination

Fusion

Concrescence

Accessory cuspsCusp of carabelliTalon cusp

Dense evaginatus

Dense invaginatus(dense in dente)Type IType IIType III

Ectupic enamelEnamel pearlsCervical enamel extentions

Taurodontism

Hypercementation

Dilaceration

Supernumerary roots

Developmental alterations in the structure of teeth

Generalized pattern

Amelogenesis imperfecta*Hypoplastic Amelogenesis Imperfecta

Localized pattern

Autosomal dominant smooth pattern

X-linked smooth pattern

Rough pattern

Enamel agenesis

*Hypomaturation Amelogenesis ImperfectaPigmented patternX-linked patternSnow capped pattern

*Hypocalcified Amelogenesis Imperfecta

*Amelogenesis Imperfecta with TaurodontismHypomaturation-hypoplasticHypoplastic-hypomaturation

Hereditary opalescent dentin (type I)Brandywine isolate (Type II)

Dentin dysplasia type I (radicular dentin dysplasia-rootless teeth)

Dentin dysplasia type II (coronal dentin dysplasia)

Regional odontodysplasia (ghost teeth)

Dentin dysplasia

Dentinigenesis imperfecta

THANKS FOR YOUR ATTENTION

THANKS FOR YOUR ATTENTION