武汉大学：《牙体牙髓病学》课程PPT教学课件（英文版）牙发育异常 Developmental Abnormalities of Teeth

Developmental Abnormalities Zhang Qi Wuhan University School of Stomatology

School of Developmental Abnormalities of Teeth Zhang Qi Wuhan University School of Stomatology

Classification >Anomalies of number >Anomalies of size > Anomalies of Shape >Anomalies of structure >Anomalies of color

School of Classification ➢Anomalies of Number ➢Anomalies of Size ➢Anomalies of Shape ➢Anomalies of Structure ➢Anomalies of Color

Anomalies of number 1. Anodontia: a complete a bsence of one or both dentition 2. Hypodontia(partial anodontia): a deficiency in tooth number 3. Hyperdontia (Supernumerary Teeth) an excess in tooth number. a. Mesiodens b. Distomolar

School of Anomalies of Number 1. Anodontia: a complete absence of one or both dentition. 2. Hypodontia (partial anodontia): a deficiency in tooth number. 3. Hyperdontia (Supernumerary Teeth): an excess in tooth number. a. Mesiodens b. Distomolar

净& Mesiodens

School of Mesiodens

Anomalies of size 1. Microdontia 2. Macrodontia

School of Anomalies of Size 1. Microdontia 2. Macrodontia

Anomalies of Shape 1. Gemination 2. Fusion 3. Concrescence 4. Dilaceration 5. Enamel Pearl(enameloma) 6. Talon Cusp 7. Taurodontism 8. Dens in Dente(dens invaginatus) 9. Dens Evaginatus 10.Supernumerary Roots 11. Hypercementosis

School of Anomalies of Shape 1. Gemination 2. Fusion 3. Concrescence 4. Dilaceration 5. Enamel Pearl (enameloma) 6. Talon Cusp 7. Taurodontism 8. Dens in Dente (dens invaginatus) 9. Dens Evaginatus 10.Supernumerary Roots 11.Hypercementosis

Gemination The partial development of two teeth from a single tooth bud following incomplete division. An incomplete division of a single tooth bud resulting in a bifid crown with a single pulp chamber

School of Gemination The partial development of two teeth from a single tooth bud following incomplete division. An incomplete division of a single tooth bud resulting in a bifid crown with a single pulp chamber

Gemination

School of Gemination

fusion The dentinal union of two embryologically developing teeth Fused teeth can contain two separate pulp chamber, may appear as large bifid crowns with one chamber

School of The dentinal union of two embryologically developing teeth. Fused teeth can contain two separate pulp chamber, may appear as large bifid crowns with one chamber. Fusion

Fusion

School of Fusion