14295_CH7DentalAnatomy Flashcards
Three developmental periods?
Growth, Calcification, Eruption
Dental development begins?
5th/6th week - prenatal
Horseshoe shaped band?
Dental lamina
Growth period of development?
Bud, Cap, Bell
of buds per dental arch?
Usually 10
Buds for permanent teeth form when?
17 weeks - 5 yrs
Cap stage also known as?
Proliferation
Small nipple shaped elevation?
Dental papilla
Last period of growth?
Histodifferentiation or bell stage
Cells that form enamel?
Ameloblast
Cells that form dentin?
Odontoblast
Cells that form cementum?
Cementoblast
Tooth takes shape through _______ in the _______ phase?
Morphodifferentiation, Bell
Depositing of the matrix?
Apposition
Crown completion to tooth emerging?
3yrs (perm teeth)
Study of anatomy?
Histology
Tooth divided into how many parts?
2 : crown, root(s)
Crown divided into?
Anatomic, Clinical crown
Four or more roots?
Multirooted
Opening for blood/nerves?
Apical foramen
Covers anatomic crown and protects dentin?
Enamel
Enamel composition?
96% inorganic, 1% organic, 3% water
Enamel can endure how much crushing pressure?
1,000 lbs per sq inch
Enamel is composed of?
Millions of enamel rods or prisms
Constitutes largest portion of the tooth?
Dentin
Dentin is harder than ____ but softer than ______?
Bone, enamel
Dentin makeup?
70% inorganic, 30% organic and water
Covers roots of teeth?
Cementum
Cementum color?
light yellow (lighter than dentin)
Cementum makeup?
55% organic, 45% inorganic (mainly calcium & salt)
Duration of cementum formation?
Throughout life of tooth
Chamber containing dental pulp?
Pulp chamber
Coronal pulp and pulp horns located?
Crown
Radicular pulp located?
Root
Chief formation of pulp?
Formation of dentin
Provides sensation to tooth?
Pulp
Tissues that support the tooth are collectively called?
Periodontium
Periodontium consists of?
Cementum, alveolar process, preiodontal ligament, gingiva