ORTHO Flashcards
Max Incisor in extreme labioversion
Class II div I
Max incisor palatally and in retruded position
Proclined lat incisors
Class II div II
Class III malocclusion types
Edge to edge
Ant crowding
Ant crossbite
Premature loss of Primary C what appliance
LHA with spurs
Ant crossbite aka
Negative crossbite
Common malocclusion
Class I malocclusion
Bimax protrusion is classified under what malocclusion
Class I type VI
Signs of incipient malocclusion (3)
Lack of interdental spacing in primary dent
Ant crowding of perm I in mixed dent
Premature loss of primary C
Start of mixed dent
6 years old
End of mixed dent
12 yrs old
Normal eruption of max teeth.
Mand teeth???
61245378
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Permanent teeth erupts in what direction
Occlusally facially
Which surf of deciduous teeth resorbs first when perk teeth erupts
Lingual surface
In rel to deciduous what is the loc of perm Incisors
Apical and lingual
Letter that has closest speaking space
S
Cord that follows permanent teeth
Gubernacular cord
S and Z letters are called
Sibilants
Assoc malocclusion of S and Z
Ant open bite
Large gap bet I
T and D aka
Liguodental sounds
T and D assoc malocclusion
Irregular I (Lingual position of max I)
F and V aka
Fricative sounds
F and V associated malocclusion
Skeletal class III
B P M aka
Bilabial sounds
When does tooth have apical closure
Add 2 to 3 years
Pag pinapili 3 yrs
Ratio to get facial type
Glabella to chin / bizygomatic width
What is the poor man’s cephalometrics
Facial profile analysis
Skeletal class II is concave or convex
Convex!!!
Ratioor proportion of mand and mx tooth
Estimate overbite and overjet
Bolton’s analysis
Determine if crowding is due to inadequate APICAL BASES
Howe’s analysis
Facial profile analysis points pointed (3)
Glabella
Subnasale
Tip of chin
FL>MD = broader contact areas which will result in more stable
Peck and peck
Highest point in the concavity behind OCCIPITAL CONDYLE
Bolton
Most forward and highest point of anterior margin of foramen magnum
Basion
Point of intersection of the contour of the post cranial base and post contour of condylar process
Articulare
Junction of frontal and nasal bone
Nasion
Most sup margin of ext auditory canal
Porion
Midpt of sella turcica
Sella
Most inf portion of orbit
Orbitale
Innermost point on contour of premax bet incisors and ANS
Point A
Point A aka
Subspinale
Innermost point of contour of mandible bet incisors and bony chin
Point B aka SUBMENTALE
Most ant portion of contour of chin
Pogonion
Most inf part of mand symphysis
Menton
Lowest most post point on mandible with teeth in occlusion
Gonion
Most stable landmark in ceph
Sella
Point bet pogonion and menton
Gnathion
Porion to orbitale forms what plane
Frankfurt horizontal plane
Nasion to sella forms what plane
Sella nasion plate
Nasion to pogonion forms what plane
Facial plane
Menton to gonion forms what plane
Mandibular plane
Plane representing ANT CRANIAL BASE (2)
Frankfurt horizontal plane
Sella nasion plane (BOARDS)
Steep mandibular plane angle means
Longer vert dimension
Ant open bite
Class II
Flat mandibular plane means
Short ant fa vert dimension
Deep bite
Class III
Normal range of ANB
0-5 degrees
ANB higher range ______ class 2 or 3
Skeletal class II
Lower ANB means class 2 or 3
Class III
