Flashcards in Tooth Anatomy Deck (72):
What is the correct terminology for tooth formation?
What is the first stage of tooth formation?
Bud -formation of tooth begins
Cap - cells of tooth increases
Bell -different tissues form/shape developed
What is the second stage of tooth formation?
What forms enamel?
What is the final stage of development?
What age do deciduous teeth begin to erupt?
Approx. 8 months
What age is the eruption of deciduous teeth complete?
29 months (2 1/2)
What is bifurcation?
When roots divide into two
What is trifurcation
When roots split into 3
What is exfoliation?
Shedding of the crown leaving room for permanent teeth
What is reabsorption?
What is the name of the cells that cause reabsorption?
How many teeth are in the permanent set?
How many teeth are in the deciduous set?
What is the pulp made up of?
Nerves and blood vessels
What is enamel made up of?
96% mineral crystals arranged as prisms
What are the mineral crystals that make up enamel called?
Where do enamel and dentine meet?
At the amelodentinal junction (ADJ)
What is the name of cells that make up dentine?
What are odontoblasts composed of?
What are the two types of dentine?
What forms cementum?
Where does cementum meet?
Cemento-enamel junction (CEJ)
At what age should have all deciduous teeth erupted?
Which teeth are premolars?
4s and 5's
At what age does exfoliation take place
Between 5 and 12 years old
At what age do upper deciduous central incisors erupt?
(URA & ULA)
At what age do upper deciduous lateral incisors erupt?
(URB & ULB)
At what age do upper deciduous canines erupt?
(URC & ULC)
At what age do upper deciduous first molars erupt?
(URD & ULD)
At what age do the upper deciduous second molars erupt?
URE & ULE
At what age do the lower deciduous incisors erupt?
LLA & LRA
At what age do the lower deciduous lateral incisors erupt?
LLB & LRB
10 - 16 months
At what age do the lower deciduous canines erupt?
LLC & LRC
At what age do the lower deciduous first molars erupt?
LLD & LRD
At what age do the lower deciduous second molars erupt?
LLE & LRE
At what age do the upper central incisors erupt?
At what age do the upper lateral incisors erupt?
At what age do the upper canines erupt?
What age do the upper first pre molars erupt?
At what age do the upper second premolars erupt?
At what age do the upper first molars erupt?
At what age do the upper second molars erupt?
At what age do the upper third molars erupt?
At what age do the lower central incisors erupt?
At what age do the lower lateral incisors erupt?
At what age do the lower canines erupt?
At what age do the lower first premolars erupt?
At what age do the lower second premolars erupt?
At what age do the lower first molars erupt?
At what age do the lower second molars erupt?
At what age do the lower third molars erupt?
What is mastication?
Which are the only premolars to have two roots?
How many roots do upper molars have?
How many roots do lower molars have?
How many cusps do premolars have?
How many cusps do upper molars have? *
The cusp of carabelli is located on which tooth?
How many cusps do lower molars have?*
* lower 6's have 5
What are genetic disturbance factors of dental development?
Palatial placement if canines
What are environmental disturbance factors of dental development
Rubella contraction during pregnancy
What is anodontia?
Absence of one or more teeth
What is hypodontia?
Lack of development of teeth
What are supernumerary teeth?
What is macrodontia?
Abnormally large teeth
Why is microdontia?
Abnormally small teeth
What is synodontia?
Fusion if two adjacent teeth
What is enamel dysplasia?
Faulty development if enamel
What are hutchinson incisors?
Small and peg shaped
Caused by mother having syphillis
What is a Cingulum?
A u or w shaped ridge on the palatal/lingual surface