Oral Anatomy Dental Anomalies 낱말 카드

Permanent

Are dental anomalies more common on permanent or primary teeth?

Maxillary

Are dental anomalies more common on maxillary or mandibular teeth?

Anodontia

What describes the absence of teeth due to an anomaly?

Ectodermal dysplasia

What describes a disorder effecting the development of the ectoderm leading to defects in hair, nails, and teeth?

Hypodontia

What is another term to describe partial anodontia?

Maxillary third molars

Which teeth are the most commonly missing adult teeth (35%)?

Maxillary lateral incisors

What is the second most commonly missing adult tooth (1-2%)?

Mandibular second premolars

What is the third most commonly missing adult tooth (1%)?

Mandibular central incisor

What is another permanent tooth might be missing but is rare?

Mandibular incisor

What primary tooth is sometimes missing (rare)?

Permanent

Is it more common for supernumerary teeth to be seen in permanent or primary dentitions?

Maxillary (90%)

Is it more common for supernumerary teeth to be seen in the maxillary or mandibular arch?

Maxillary incisor, third molar, and mandibular premolar

What areas in adult dentition is it likely to see supernumerary teeth?

Mesiodens

What is the most common supernumerary tooth called?

Between maxillary central incisors (midline)

Where is a mesiodens located?

Paramolar

What describes a supernumerary tooth lingual or buccal to a molar?

Distomolar or fourth molar

What describes a supernumerary tooth distal to a third molar?

Peg lateral

What dental anomaly is shown here?

1

How many lobes do peg laterals form from?

Maxillary central incisors

What tooth, besides the maxillary laterals, can be peg shaped but is very rare?

Gemination (twinning)

What describes a tooth with a crown double in width but it has one root and one pulp chamber and canal?

Anterior

Is gemination more common with anterior or posterior teeth?

Primary

Is gemination more common with primary or permanent dentition?

Fusion

What describes when two adjacent crowns fuse and appear double in width but have two roots and two pulp chambers and canals?

Primary (5%)

Is fusion more likely to occur with primary or permanent dentition?

Mandibular anterior

Which teeth are more likely to experience fusion?

Gemination

Is gemination or fusion shown?

Fusion

Is gemination or fusion shown?

Fusion

What tooth anomaly is shown?

Hutchinson's incisors

What describes an anomaly with notched incisal edges on incisors and they sometimes look like a screwdriver?

Hutchinson's incisors

What tooth anomaly is present?

Mulberry molars

What tooth anomaly is present?

Congenital syphillis

What causes hutchinsons incisors and mulberry molars?

Accessory cusps

What is being shown here?

Unusually prominent ridge

What tooth anomaly is shown?

Facial of maxillary central incisor

Where is the most common location of unusually prominent ridges?

Molars

Which teeth are most likely to have extra cusps?

Tuberculum intermedium

What describes an extra third lingual cusp on mandibular molars?

Talon cusp

What describes an extra lingual cusp on anterior teeth?

True

T/F: talon cusps have their own pulp horn.

Talon cusp

What tooth anomaly is shown?

Macrodontia

What describes a tooth anomaly where teeth are larger than normal (pituitary giants)?

Microdontia

What describes a tooth anomaly where teeth are smaller than normal (pituitary dwarfism)?

Macrodontia

Is macrodontia or microdontia more generalized meaning it effects more teeth in the mouth?

Incisors and canines

What teeth are most effected by macrodontia (localized)?

Maxillary lateral incisors and third molars

Which teeth are most effected by microdontia?

Shovel-shaped maxillary incisors

What tooth variation is shown (not an anomaly) and is more common in american indians, asian, mongoloid, and inuits?

Dislaceration

What describes an anomaly where the tooth has a sharp bend in its root or crown?

Flexion

What describes an anomaly where the tooth has a gradual curve in its root or crown?

Enamel pearls

What tooth anomaly is shown?

Furcation of molars

Where are tooth pearls often found near?

Taurodontia

What tooth anomaly is shown and is seen in neanderthals, native americans, and inuits?

Molars

What teeth are effected by taurodontia?

Taurodontia

What tooth anomaly is shown?

Dens in dente (tooth within a tooth)

What tooth anomaly is shown?

1-5%

What percent of the population is effected by dens in dente?

Hypercementosis

What tooth anomaly has webbed roots because of thickening of cementum?

Trauma and metabolic dysfunction

What is hypercementosis caused by?

Concrescence of roots

What describes the joining of cementum of adjacent teeth after eruption (not a real anomaly)?

After

Concrescence of roots is the joining of cementum of adjacent teeth before or after eruption?

Dwarfed roots

What tooth anomaly is shown?

Generalized

Dwarfed roots are due to heredity if it is generalized or localized?

Localized

Dwarfed roots are due to fast orthodontic movement if it is generalized or localized?

Accessory (extra) roots

What tooth anomaly is shown?

Mandibular canine and premolar

Accessory (extra) roots are most common with which teeth?

Facial and lingual

Accessory (extra) roots are most common to located where on mandibular canines and premolars?

First premolar

What maxillary tooth can have accessory (extra) roots?

Maxillary canine

What primary tooth can have accessory (extra) roots but is rare?

Horizontally impacted

What tooth position anomaly occurs with third molars?

Unerupted canine

What is being shown here?

Ectopic eruption

What describes an eruption of a tooth NOT in the oral cavity?

Transmigration

What describes the position of a tooth in the wrong spot in the oral cavity?

Rotation

What tooth position anomaly is shown?

Rotation

What tooth anomaly is shown?

Transposition (premolar and canine switched)

What tooth anomaly is shown?

Lateral incisors and canines

Which teeth are likely to be transpositioned?

Infraversion

What tooth anomaly occurs where a tooth does not fully erupt?

Supraversion

What tooth anomaly occurs where a tooth erupts too far in the oral cavity?

Opposing tooth is missing

Supraversion can occur because...

Labioversion

What describes a tooth that has assumed a position labial to normal?

Lingoversion

What describes a tooth that has assumed a position lingual to normal?

Ankylosis

What describes the failure of a tooth to complete eruption due to trauma or infection?

PDL

What attachment is lost in ankylosis?

Root fuses to bone

What occurs because of the loss of the PDL in ankylosis?

Enamel dysplasia

What tooth malformation is described as abnormal enamel formation?

Dentin dysplasia

What tooth malformation is described as abnormal dentin formation?

Amelogenesis imperfecta, fluorosis, enamel damage from high fever, and focal hypermaturation

What are examples of enamel dysplasia?

Dentinogenesis imperfecta and tetracycline staining

What are examples of dentin dysplasia?

Amelogenesis imperfecta

What hereditary tooth anomaly causes total or partial lack of enamel?

Both

Does amelogenesis imperfecta effect primary, permanent, or both dentitions?

Fluorosis

What tooth anomaly occurs from too much fluoride during tooth formation?

Mottled enamel

What is mild fluorosis characterized by?

Pitted enamel

What is severe fluorosis characterized by?

Strong (caries prone)

Are teeth effected by fluorosis weak or strong?

Enamel damage due to high fever (pitted enamel)

What tooth anomaly is shown?

Tooth formation

When does enamel damage due to high fever occur?

Focal enamel hypoplasia (Turner's Tooth)

What tooth anomaly is shown?

Local trauma or infection like an abscess on primary teeth

What is focal enamel hypoplasia caused by?

Turner tooth

What tooth anomaly is shown?

Dentinogenesis imperfecta

What hereditary tooth anomaly is due to faulty dentin (opalescent/shiny enamel)?