Chapter 5 Developmental Disorders

Question 1

Ankylogossia

Answer 1

Extensive adhesion of the tongue to the floor of the mouth or the lingual aspect of the anterior portion of the mandible.

Question 2

Ankylosed teeth

Answer 2

Teeth that are fused to the alveoalar bone, a condition especially common with retained decidous teeth.

Question 3

Anodontia

Answer 3

Congential lack of teeth

Question 4

Anomaly

Answer 4

Marked deviation from normal, especially as a result of congentical or hereditary defects

Question 5

Commissure

Answer 5

The site of union of corresponding parts.

Question 6

Concresence

Answer 6

Condition in which two adjacent teeth become united by cementum

Question 7

Congential disorder

Answer 7

Disorder that is present at an exisitng from the time of birth

Question 8

Cyst

Answer 8

Abnormal sac or caivty lined by epitheulim and surrounded by fibrous connective tissue

Question 9

Dens invaginatus (Dens in dente)

Answer 9

Tooth with a tooth, developmental anomaly that results when the enamel organ invaginates into the crown of a tooth before mineralization.

Question 10

Dentinogeneiss

Answer 10

Formation of dentin

Question 11

Differentiation

Answer 11

Distinghushing of one tissue from another

Question 12

Dilaceration

Answer 12

Abnormal bend or curve as int he root of a tooth

Question 13

Fusion

Answer 13

Union of two adjacent tooth germs

Question 14

Gemination

Answer 14

Twinning, when a single tooth germ attempts to divide, resuliting in the incomplete formation of two teeth.

Question 15

Hypodontia

Answer 15

Partial anodontia, the lack of one or more teeth

Question 16

Impacted teeth

Answer 16

Teeth that cannot erupt into the oral cavity because of phsical obstruction

Question 17

Macrodontia

Answer 17

Abnormally large teeth

Question 18

Macrognathia

Answer 18

Enlarged jaw

Question 19

Microdontia

Answer 19

Abnormal small teeth

Question 20

Multilocular

Answer 20

Radiographic appreance in which many cirucalr radioucencies exist, can appear as soap bubble like or honeycomb like

Question 21

Nodule

Answer 21

Small solid mass that can be detected through touch

Question 22

Oligodontia

Answer 22

Subcaategory of hypodontia in which 6 or more teeth are missing

Question 23

Predilection

Answer 23

Dispositon in favor of something; preference

Question 24

Proliferation

Answer 24

Multiplication of cells

Question 25

Stomoduem

Answer 25

Embroynic invagination that becoems the oral cavity

Question 26

Supernumerary

Answer 26

Excess of normal or regualar number as in teeth

Question 27

Adnexal

Answer 27

Relating to skin appendages, such as sweat glands, sebaceous glands, and hair follicles.

Question 28

Amelogenesis

Answer 28

The formation of enamel.

Question 29

Cementogenesis

Answer 29

The formation of cementum.

Question 30

Dens evaginatus

Answer 30

An accessory enamel cusp found on the occlusal surface of a tooth. This developmental anomaly occurs most often on mandibular premolars. 

Question 31

Distodens

Answer 31

An extra (fourth) molar tooth. It is the second most common supernumerary tooth. 

Question 32

Embedded teeth. 

Answer 32

Teeth that do not errupt because of a lack of erruptive force.

Question 33

Ghost cell. 

Answer 33

An epithelial cell with eosinophilic cytoplasm but lacking a nucleus, seen in calcifying odontogenic cysts. 

Question 34

Hypercementosis

Answer 34

Excessive cementum on the roots of teeth.

Question 35

Hyperdontia

Answer 35

An increased number of teeth. 

Question 36

Hypoplasia

Answer 36

The incomplete development of an organ or tissue.

Question 37

Mesiodens

Answer 37

The most common supernumerary tooth found between the maxillary central incisors. It can be unerupted or errupted. The crown has a conical shape.

Question 38

Micrognathia

Answer 38

Reduced jaw size. 

Question 39

Nonodontogenic

Answer 39

Not related to tooth development. 

Question 40

Odontogenic

Answer 40

Tooth forming. 

Question 41

Operculum

Answer 41

With regard to dentistry, a flap or covering of soft tissue that forms over a partially impacted tooth.

Question 42

Pseudocyst

Answer 42

An abnormal cavity that resembles a true cyst but is not a pathologic cavity and is not lined with epithelium. 

Question 43

Sistrunk procedure

Answer 43

Name for surgical procedure used for treatment of a thyroglossal duct cyst. 

Question 44

Succedaneous

Answer 44

Replacing or substituting for something else; often used when referred to the permanent tooth

Question 45

Syndrome

Answer 45

A group of signs and symptoms that occur together in one condition. 

Question 46

Unilocular

Answer 46

A term used to describe the radiographic appearance of a single rounded compartment or locule.