space and ceph (5)

mandibular canines and premolars in one quadrant (so X2 for that arch)

1/2 the width of permanent mandibular incisors + 10.5mm= estimated width of ____________________

maxillary canines and premolars in one quadrant (so X2 for that arch)

1/2 the width of permanent mandibular incisors + 11mm= estimated width of ____________________

1. mandible protrusive or maxilla retrusive 2. mandible over closed 3. maxilla vertically short= mandible rotates up and forward

3 ways a person can be skeletal class III=

maxilla to mandible

ANB is referring to what relationship

class II

If the A point is greater than the norm, what dental/skeletal class would this be?

class III

If the A point is less than the norm, what dental/skeletal class would this be?

class III

If the B point is greater than the norm, what dental/skeletal class would this be?

class II

If the B point is less than the norm, what dental/skeletal class would this be?

a combination of crowding and protrusion

If there is not enough room to properly align teeth, the result can be...

vertical proportions of face

Inclination of mandibular plane to SN is an indicator of _________

protrusive

Leveling the arch or leveling a deep curve of spee will make teeth more _______

maxilla to cranial base A= A point (right below the nose)

SNA is referring to what position? what is the A landmark?

measurement of teeth on radiographs estimation from proportionally tables combination of above

how do we estimate crowding/spacing for unerupted teeth? (3)

reduces

Reducing protrusion of teeth ________ available space

mandible to cranial base B= B point on chin

SNB is referring to what position? what is the B landmark?

true

T or F: Tanaka-Johnson method tends to overestimate space required for caucasian females in both arches and underestimates space required in lower arch for african american males

true

T or F: Tanaka-Johnston space analysis method requires neither radiographs nor reference tables and therefore is most practical for manual calculation

true

T orF: Lingually positioned or retruded incisors will accentuate any crowding

under

do you want to over or underestimate space required for african american males in both arches?

over

do you want to over or underestimate space required for caucasian females in both arches?

E line

esthetic plane from nasal tip to pogonion (chin) (both are soft tissue points) =

A-P and vertical

evaluation using cephalometrics only evaluates which planes of space?

class III (maxilla in, mandible out)

if ANB is a negative relationship, what class is it?

long II

if someone has a large/high mandibular plane angle= ______ face and class ___ tendency

short III

if someone has a small/low mandibular plane angle= ______ face and class ___ tendency

long face short face

if the mandibular plane angle is high= if low=

vertical disproportion

if there is an increase in the mandibular plane angle=

A is behind B= class III tendency

if wits analysis is a negative number, this means...

A is in front of B= indicates class II tendency

if wits analysis is a positive number, this means...

reduce crowding procline the lower incisors

leveling the curve of spee will do what? (2)

mandibular incisors

measure total width of permanent __________ _________, and use table to predict width of permanent canines and premolars

space available

mesial of permanent 1st molar to mesial of contralateral permanent 1st molar= what space?

space required

mesiodistal width of all teeth 2nd premolar to contralateral 2nd premolar

skeletal and dental

objective of cephalometrics= visualize the contribution of _______ and _______ relationship to the malocclusion

all the above

space analysis is based on which of the following assumptions? a. The anteroposterior position of incisors is correct b. Space available will not change because of growth and dental compensatory tipping c. All teeth are present and in normal size d. All of the above

crowding anticipated in permanent dentition

space available (-) total space required= if negative=

spacing anticipated in permanent dentition

space available (-) total space required= if positive=

mesial of permanent 1st molar to mesial of contralateral permanent 1st mola

space available is from where to where

M-D width of all teeth, 2nd premolar to 2nd premolar

space required is from where to where

nasal tip pogonion

the E line is from __________ to __________

lip protrusion

the E line is used to evaluate...

protrusion of both teeth = bimaxillary protrusion tendency

the interincisal angle, if small, means there is...

wits analysis

this measures a projection of points A and B to the occlusal plane, along which the linear difference btw these points is measured=

ANB

what abbreviation stands for maxilla to mandible relationship

interincisal angle

what angle is this depicting

transverse (issues like midline discrepancies)

what plane of space does cephalometrics NOT evaluate

S= sella N= nasion

where is the S and N landmarks?