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Dental Anatomy > Chapter 11- Dental Anomalies > Flashcards

Chapter 11- Dental Anomalies Flashcards

1
Q

What is Anodontia?
Total?
Partial?

A

Total: no teeth at all
Partial: one or more missing teeth

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2
Q

What is the most commonly missing teeth? (Partial anodontia)

A

Maxillary third molars

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3
Q

What is the second most commonly missing teeth? (Partial anodontia)

A

Maxillary lateral incisors

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4
Q

What is dens in dente?

A

Tooth within a tooth

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5
Q

What is an anomaly?

A

A deviation from normal, usually related to embryonic development that may result in the absence, excess, or deformity of body parts

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6
Q

Define supernumerary teeth

A

Extra teeth

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7
Q

The most common anomaly in Tooth shape in the anterior region of the permanent dentition is the ____ _______ _______ ______

A

Peg- shaped lateral incisor

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8
Q

Describe twinning (germination)

A

A result from splitting of a single forming tooth; Notched;

Share a common root; extra tooth

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9
Q

Describe fusion

A

Union of two adjacent teeth.

With separate roots and pulp canals

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10
Q

What are two dental effects of a child with syphilis passed down from their mother?

A

Hutchinson’s incisors: Notched incisor edge

Mulberry Molars: first molars shaped like a mulberry; poorly developed cusps & multiple tiny tubercles

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11
Q

Concrescence?

A

Superficial fusion or growing together of only the cementum of two adjacent tooth roots

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12
Q

Bruxism?

A

Excessive grinding together of teeth

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13
Q

Attrition?

A

Wearing away of enamel due to movement of mandibular teeth against maxillary teeth during normal function

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14
Q

Abrasion?

A

The wearing away of tooth structure by mechanical means

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15
Q

Erosion?

A

Loss of tooth structure from chemical means

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16
Q

What is a tuberculum intermedium?

Tuberculum Sextum?

A

A third lingual cusp that develops on Mandibular Molars on the lingual surface.

The extra cusp were located on the distal marginal ridge

17
Q

What is a Talon Cusp?

A

A small projection on the lingual surface of maxillary or mandibular anterior permanent teeth

18
Q

What are small, round modules of enamel with a tiny core of Dentin called?

A

Enamel Pearls

19
Q

What is Dilaceration?

A

A severe bend or angular distortion of a tooth root

Also called flexion to describe a sharp curvature or bend of a tooth root

20
Q

Describe Hypercementosis

A

Formation of excess cementum around the root of a tooth after the tooth has erupted

21
Q

Describe a labioversion tooth

Linguoversion?

A

When a tooth is located too far in the labial direction

When a tooth is located too lingual

22
Q

Impacted teeth?

A

When teeth fail to erupt due to mechanical obstruction.

Most common teeth to be impacted are maxillary and mandibular third molars & maxillary canines

23
Q

What is a slight rotation of a tooth called?

A

Torsiversion

24
Q

Supraeruption?

A

When a tooth is erupted beyond the occlusal plane

25
Q

Describe Ankylosis

A

Can be initiated by an infection or trauma to the periodontal ligament, resulting in the loss of its periodontal ligament space so the tooth root is truly fused to the alveolar process or bone.

26
Q

An adult has only three maxillary incisor crowns, but one of the crowns is doubled in width and notched. What do you suspect?

A

Fusion

27
Q

Dysplasia?

A

Generic term that indicates abnormal development

28
Q

What are two things that can cause dysplasia?

A

Hypomineralization: too little mineral

Hypocalcification: too little calcium

29
Q

What is hypoplasia?

A

Form of dysplasia that refers to an incomplete formation of a tissue

30
Q

What is enamel dysplasia?

A

A term used to describe a disturbance in the enamel- forming cells (ameloblasts) during early enamel formation

31
Q

Fluorosis?

A

A condition caused during enamel formation by the ingestion of a high concentration of fluoride

32
Q

Amelogenesis Imperfecta?

A

Disorder that affects the enamel formation of both dentitions

33
Q

What is Focal Hypoplasia?

A

An incomplete development of enamel seen as a localized discolored spot or deformed area on a tooth

Dental Anatomy (6 decks)

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