Midterm Flashcards
Calcification:
3-4 months (3)
max central
mand central and lateral
Calcification:
4-5 months (2)
max canine
mand canine
Calcification:
10-12 months
max lateral
Calcification:
1.5-1.75 years
max 1st premolar
Calcification:
2-2.25 years
max 2nd premolars
Enamel Completion:
4-5 years (4)
max central and lateral
mand central and lateral
Enamel Completion:
5-6 years
max 1st premolar
Enamel Completion:
6-7 years (3)
max canine and 2nd premolar
mand canine
Root completion:
8-9 years
mand central
Root completion:
9-10 years
max central
Root completion:
10-11 years
mand lateral
Root completion:
11 years
max lateral
Root completion:
12-14 years (3)
max premolars (1 and 2)
mand canines
Root completion:
13-15 years
max canine
which side of CEJ is more curved usually
MESIAL
which way does root normally tilt
distal
which side is the root depression more prominent on?
DISTAL
what is another name for gingival third
cervical third
how many lobes on anterior and canines
4 lobes
what are succedaneous teeth
permanent teeth that REPLACE primary teeth
what teeth are considered succedaneous teeth
anteriors, canines, premolars
NOT MOLARS -> they dont replace baby teeth
what is ugly-duckling stage and when is it
mixed dentition 6-12 yrs old
palmar numbering system is used in
ortho. uses brackets and quads
what does DAST stand for
dentition
arch
side
tooth
what tissue makes up bulk of tooth
dentin
75% hydroxy
what tissue covers root
cementum
65% hydroxy
what covers the crown
enamel
hardest thing in body but also brittle! need dentin to support it
95% hydroxy
what are the types of periodontal ligaments (5)
alveolar crest \\ angled like that
horizontal (root to tissue)
oblique /// angled like that
apical (end of roots)
interradicular (b/w roots on bi/trifurication)
a line angle is formed by the junction of 2 surfaces
the junction of 2 surfaces
mesial-facial LINE ANGLE
what is a point angle formed by
3 touching surfaces
mesial-facial-incisal POINT ANGLE
what are embrasures
triangles b/w teeth
proximal ones are filled by gingival papilla
what are the fine lines on teeth called
parikymata
function incisors
cut food, speech, lip support
max incisors HOC
FL: cervical third
M: incisal third
D: junction of incisal/middle third
are max incisors longer or shorter than lateral?
LONGER!
3 anaomlies of max incisors
longer crown
shorter root
shovel shaped incisors
MD <> FL for max central inscior
MD>FL
what side of max central is more curved at incisal
distal incisal angle is curved
what side of max central is more straight at incisal
mesial incisal angle is more straight
what shape is the crown incisaly on max incisor
triangular
wedge from mesial/distal
where is incisal ridge located on max central insicor insical view
lingual!
lateral max incisor anomalies (4)
peg laterals
missing!!
dens in dente
developmental groove (extends from pit on lingual cingulum
what is difference on lateral incisor from central
crown is more slender, root longer and skinner
overall much rounder from inscial view
lingual fossa much more pronounced
where is the incisal edge located on max lateral incisor from insial view
central on tooth MD
lateral max incisor HOC
FL: cervical third
M: incisal third
D: junction of incisal/middle third
lateral max incisor MD<>FL
MD>FL
what is the very first tooth to erupt
mand central incisor
mand central incisor FL<>MD
FL>MD
mand central incisor roots/canals
usually 1 root and canal but sometimes 2 canals!!
mand central incisor incisal edge angle facially and incisallyt
STRIAGHT F
lingual from Incisal
mand central incisor cingulum
inconspicuous!
do mand central incisor have developmental depressions on roots?
YES! M and D
D much more DEEP
what teeth have the I beam effect
mand central/lateral incisor
mand central incisor HOC
FL: cervical third
MD: incisal third
mand lateral incisor FL<>MD
FL>MD
mand lateral incisor canals
usually 1 canal sometimes 2