Diagnosis & Treatment Plan Flashcards
Macroeasthetic =
Miniesthetics =
Microesthetics =
face, smile, teeth
MB cusp of maxillary first molars occlude with MB groove of mandibular first molars, teeth aligned along line of occlusion in the maxilla and mandible
class I normal molar occlusion
MB cusp of maxillary first molar occludes with MB groove of mandibular first molar, teeth do not align
class I malocclusion
MB cusp of maxillary first molars is mesial MB groove of mandibular first molar, maxillary arch displaced anteriorly
class II malocclusion
2 subdivisions of class II molar relationship
Subdivision 1 = proclined
Subdivision 2 = retroclined
MB cusp of maxillary first molars is distal to the MB groove of mandibular first molars, maxillary arch displaced posteriorly
class III malocclusion
any deviation of the teeth from ideal normal occlusion
malocclusion
What % of patients most often exhibit some form of malocclusion in their molar classification?
65% (60% of these have an unknown cause)
vertical overlap of incisor from incisal edge to incisal edge
overbite
normal overbite
1-2 mm
too much vertical overlap vs space between incisors
deep bite / open bite
horizontal overlap of incisors from labial surface to labial surface of incisors
overjet
normal overjet
2-3 mm
What is reverse overjet?
when the lower incisors are in front of the upper incisors
misalignment of teeth where upper teeth occlude behind lower teeth
crossbite
maxillary anterior teeth positioned lingual to mandibular anteriors, observed in reverse overjet
anterior crossbite
calculates tooth size discrepancy to measure relative mandibular or maxillary excess
Bolton analysis
Which facial third can the orthodontist influence the most?
lower third
The interpupillary distance should IDEALLY line up with?
the commissures of the mouth
Name the molar relationship:
straight facial plane
convex facial plane
concave facial plane
class I
class II
class III
refers to the relationship of the lower face relative to the forehead
facial divergence
minimum vs ideal incisor display vs gummy smile
Minimum = 75% of incisors visible
Ideal = 100% incisor visible, + 1-2mm gingiva visible
Gummy smile = >2mm gingiva showing
At rest, ideal incisor display is ______mm if incised edge.
2-4 mm
the ability for lips to close without strain
posture
Competent vs incompetent lips
Competent- lips can close without strain at rest
Incompetent- lips separated by 3-4mm at rest and muscles are strained upon closure
based on the amount of vermillion visible at rest
proportion (can be thick or thin)
position of the lips relative to the tangent line that runs from the nose tip to chin (E line)
position (prominent or retrusive)
the appearance of a gap of space during smiling, between the maxillary posterior teeth and the corners of the mouth
buccal corridor (wide, medium, or narrow based on the amount of space visible)
Skeletal class I, II, and III
Skeletal class I- normal relationship with the jaw
Skeletal class II- maxilla more anterior to mandible
Skeletal class III- maxilla more posterior to mandible
normal ANB angle vs class II or III
Normal = 2 degrees
Class II = 4 degrees or more
Class III = 0 degrees or less
