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30 Cards in this Set
- Front
- Back
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How many phases does a tooth incounter?
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3
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Used to describe the tooth as it is breaking through the gingival tissue?
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Emergence
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Dental development usually begins when?
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5th or 6th week of prenatal life
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By the 7th wk, skin cells of the mouth called epithelium thicken along the ridge of the developing jaws creating a horse-shoe shaped band called?
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Dental Lamina
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The growth period of development is divided into what stages?
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bud, cap, and bell
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What happens during the bud stage?
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From the dental lamina, patches of epithelial cells grow into the underlying tissues
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How many tooth buds are present in each dental arch and they give rise to future primary teeth?
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10
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Tooth buds for the premanent teeth form when?
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between 17th wk of fetal life through the age of 5yrs.
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This stage is also called proliferation stage?
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Cap stage
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During the Cap stage, epithelium of the cap will give rise to what?
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enamel
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The zone under the cap is called?
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dental papilla
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The dental papilla give rise to the ?
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dentin, cementum, pulp
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The last period of growth is also known as?
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bell stage, or histodifferentiation
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Meaning of histodifferentiation?
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acquisit on of tissue charactertics by cell group
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What happens during the Bell stage?
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ameloblast cells form the enamel, odonblast cells form the dentin, and cementoblast cells form the cementum
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Ameloblast cells form what of the tooth?
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enamel
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Odontoblast cells form what part of the tooth?
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dentin
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Cementoblast form what of the tooth?
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cementum
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As the tooth is in the bell stage, it begins to take shape and form through process called?
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Morphodifferentiation
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Enamel forming cells and dnetin forming cells line up to form?
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Dentinoenamel juncition
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What refers to the depositing of the matrix for the hard dental structures?
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Apposition
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What is deposited by cells along the boundary line at the end of morphodifferentiation?
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Matrix
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Process by which organic tissue becomes hardened by a deposit of calcium or any mineral salts?
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Calcification
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For eruption of permanent teeth, it takes how long for tooth growth to end?
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3years from crown completion to the time the tooth emerges into mouth.
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What does it mean with teeth exfoliate?
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primary teeth get ready to fall out and make way for the eruption of permanent teeth (shedding)
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A tooth is divided into two parts?
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crown and one or more roots
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Crown is divided into what parts?
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anatomic and clinical crown
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Anatomical crown is which portion of the tooth?
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portion of tooth encased in enamel
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Enamel completely exposed above the gingiva and to have root surface showing is called?
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Gingival recession
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Term applied to the part of the crown exposed in the mouth?
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Clinical crown
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