Patient Examinations Flashcards
Angle’s classification is only applied to what
permanent teeth and the A-P plane of space
Class II skeletal problems can be caused by what
the size or positions of the skeletal components
can be maxillary protrusion or mandibular retrusion
What can cause a class III skeletal relationship
maxillary retrusion
mandibular protrusion
What are two transverse skeletal contributions
maxillary constriction
mandibular dentoalveolar constriction
What are two vertical skeletal and dental contributions
long face and increased lower anterior face height; with or without open bite
short face and reduced anterior face height; often deep bite
What does a straight profile indicate
optimal relations of maxilla and mandible to each other and to the cranial base; usually class I
What does a convex profile indicate
disproportional relationships usually class II
What does a concave profile indicate
disproportional relationship usually class III
What are the four elements of A-P facial form analysis
Mx
Mn
Mx/MN
lip protrusion
What are five elements of the vertical facial form analysis
mandibular plane facial proportions lip competence labiomental fold teeth to upper lip
What are two elements of the transverse facial form analysis
upper and lower facial symmetry
Mx teeth to facial midline
What four things does the facial form analysis provide the provider
skeletal information in multiple planes
addresses skeletal and dental protrusion by implication
related the teeth to the face
attempts to localize the problem
How can you tell protrusion, normal or retrusion
nose-lip-chin interaction
E-line
These two things can be used as a guide for skeletal relationships
overjet and molars
What is the SNA position/angle
Sella - Nasion - A point (alar cartilage)
What is the SNB position/angle
sella- - nasion - B point (chin)
What is the ANB position/angle
The difference between SNA and SNB
ideal is less than 4
How do you find the mandibular plane angle
along the angle of the body of the mandible
What is the Y-axis
the angle from tragus line and the Se/Gn line (sella/tip of chin)
What does the Upper incisor and Lower incisor to FH angle mean
how proclined the teeth are
What does the interincisal angle show
the inclination between the incisors; more upright, protrusive, etc.
What five things can diagnostic study cased be used for
evaluation space analysis tooth size analysis case presentation treatment evaluation/documentation
What can arch length assessment be used to determine
maxillary and mandibular crowding/spacing
True or False
Arch dimensions do not change during growth
True
This is a predictable shift
mesial molar shift
The predict the size of the premolars and canine on one side of the mandible, what do you calculate
take 1/2 the width of the lower incisors + 10.5
To predict the size of the premolars and canines on on size of the maxilla, what do you calculate
take 1/2 the width of the LOWER incisors + 11.0
What does tooth size analysis compare
the sum of mesio-distal dimension of maxillary and mandibular teeth; stated in terms of excess
What is the significant of a CR-CO shift of the mandible
may develop permanently and cause facial asymmetry
What is the line measurement of the facial profile analysis
nasian to A to B
How do you assess vertical facial relationships
Thirds
