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52 Cards in this Set
- Front
- Back
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What are 5 functions of the primary dentition?
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mastication
articulation space maintenance esthetics support for cheeks and lips |
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What is Turner's Syndrome?
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discoloration or hypoplasia of permanent teeth due to periapical disease in primary tooth
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At what point in a tooth's development does it start to erupt?
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crown formed
root starts to form |
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What is passive eruption?
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when tooth continues to erupt after it has broken the gums
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What is super eruption?
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When a tooth grows more because its arch counterpart is missing.
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What defines the pre-eruptive phase?
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initiation of crown formation to start of root formation
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When does the eruptive phase end?
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when the tooth reaches the occlusal plane
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When does the functional (post-eruptive) phase start?
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when tooth enters oral cavity
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What are the 4 steps of the eruptive phase?
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Root Formation
Movement Penetration Occlusal Movement |
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Which of the following is not a theory of how tooth eruption occurs?
a.Vascular pressure and blood vessel thrust b.Pulpal pressure and pulpal growth c.Traction by periodontal fibroblasts d.Baroreceptor Reflex e.Root Formation f.Bone Remodeling g.Dental Follicle |
d.Baroreceptor Reflex
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When do primary central incisors erupt?
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7 months
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When do primary lateral incisors erupt?
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11 months
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When do primary 1st molars erupt?
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15 months
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When do primary canines erupt?
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19 months
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When do primary 2nd molars erupt?
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23 months
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When do primary crowns begin to form?
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4-6 months in utero
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When are primary crowns complete?
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10 months after initiation ~ 5 to 7 months after birth
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When are primary roots completed?
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1 year after eruption of tooth into mouth
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What causes resorption of primary teeth?
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pressure of succedaneous dental follicle
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A mother brings her one-year old into your office the day after his first birthday. She says the pediatrician said to have the first dental check-up by this time. What primary teeth are you expecting to see when the child opens?
A. Maxillary incisors only B. Mandibular and maxillary incisors C. All incisors and maxillary canines D. All incisors and mandibular canines E. All anterior teeth F. Mandibular incisors only |
B. Mandibular and maxillary incisors
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A 15-month old child walks into your office and begins to cry and hold his mouth in pain. Which teeth have probably not been traumatized, as they are not usually present at 15 months of age?
a.Primary lateral incisors and canines b.Primary canines and first molars c.Primary canines and second molars d.Primary central and lateral incisors e.Primary first and second molars |
c.Primary canines and second molars
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A 1 year old child is expected to have erupted which of the following primary maxillary and mandibular teeth?
a.Central incisors and canines b.Central incisors and laterals c.Central incisors only d.Lateral incisors only |
b.Central incisors and laterals
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What teeth come in at 6 years of age?
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permanent 1st molars
permanent mand. central incisors |
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What teeth come in at 7-9 years of age?
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permanent max. incisors
permanent mand. lateral incisors |
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When do the permanent mand. canines come in?
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10 years old
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How long is the quiescent period?
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1-1.5 years
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What teeth come in from 10-12 years old?
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permanent premolars
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What teeth come in at 12 years old?
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permanent max. canines
permanent 2nd molars |
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At what age is only permanent dentition present?
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12 years old
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At what age is late mixed dentition present?
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10-12 years old
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What is the anterior/posterior trend to permanent tooth eruption and what are the exceptions?
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anterior to posterior
1st molars come early mand. 1st premolars can come before mand. canines max. 1st premolars and also 2nd premolars come before max. canines |
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What's the max/mand trend to permanent tooth eruption and what's the exception?
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Mand. before max.
max. 2nd premolars come before mand. 2nd premolars |
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When do secondary crowns begin to form?
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crowns of first molars begin to form at birth
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When do permanent crowns complete their formation?
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about 3 or more years before eruption.
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When do permanent roots complete their formation?
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about 3 years after emergence
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How much of a permanent root is formed before eruption occurs?
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1/2
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When is the deciduous period?
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8 months to 6 years
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When is the mixed dentition period?
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6 years to 12 years
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When is the permanent dentition period?
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after 12 years
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What happens at birth according to the Rule of Fours for permanent teeth?
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Four crowns have initiated calcification
(the 1st molars) |
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What happens at 4 years of age according to the Rule of Fours for permanent teeth?
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All crowns have started calcification
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What happens at 8 years of age according to the Rule of Fours for permanent teeth?
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All crowns are completed
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What happens at 12 years of age according to the Rule of Fours for permanent teeth?
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All crowns have emerged
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What happens at 16 years of age according to the Rule of Fours for permanent teeth?
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All roots are completed
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What happens at:
6 weeks old (in utero)? 6 months old? 6 years old? |
6 weeks old (in utero): dental development begins
6 months old: first primary tooth erupts 6 years old: first permanent tooth erupts |
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A mother brings her three kids to your office for their annual check-ups. Which of the following statements concerning canines is most likely?
a.The middle child is 11 and has no adult canine teeth b.The youngest child is 10 and has adult mandibular canines only. c.The oldest child is 12 and has maxillary canines only. d.The youngest child is 10 and has adult maxillary canines only. e.The oldest child is 12 and has mandibular canines only. |
b.The youngest child is 10 and has adult mandibular canines only.
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As soon as a child gets his/her___________ he/she is considered to be in the mixed dentition:
a.Permanent canines b.Permanent first molars c.Permanent first premolars d.Permanent second premolars |
b.Permanent first molars
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A pediatric patient of yours complains of severe pain on chewing. On clinical exam, you see an eruption cyst in the place of the mandibular second molar. What is the most likely age of this patient?
a.8 b.10 c.12 d.14 |
c.12
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At 9 years of age, how many primary teeth are present in the mouth?
a.4 b.8 c.12 d.18 |
c.12
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A patient with erupted teeth #8, 7, C, B, A, 3 and unerupted 2 and 1 is most likely what age?
5 6 8 10 12 |
8
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Whose teeth will erupt first: girls or boys?
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girls
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Whose teeth will erupt first: slender children or stocky children?
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slender children
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