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Phasesortho Tx1

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robbypowell's version from 2018-09-10 16:58

Phases of orthodontic tx

Question Answer
How many generally accepted phases of otrho tx are there?6 (appliance placement, leveleing & alignment, arch coordination, crown-root positioning, detailing and finishing, retention)
What is "the most difficult phase of all?"Retention (last phase)
what is the 1st phase?Appliance Placement (after records and thorough tx plan)
what is the 2nd phase?
What must we do before appliance placement?CC, Health Hx, Oral Exam, Ortho Screening, Diagnostic Records, Problem List, Tx Objectives, Tx plan, Treatment eval (presentation), Informed Consent
which has no bracket prescription? (edge-wise/straightwire)standard edgewise
which has a bracket prescritption? (edgewise/straightwire)straight-wire
positive torque is _____ (labial/lingual)labial
in terms of straightwire prescriptions: torque is _____/_____ and angulation is ____/____bucco-lingual; mesio-distal
which has greater torque? MBT or RothMBT
first step of bonding procedure is what?clean the bonding surface (pumice and rubber wheel)(not hygeine pumice)
it is not suggested to use a standard pre-packed prophy paste... why?contains an oil leaves residue (decreases bonding strength)
t/f: etch is self-limitingtrue (according to a study)
t/f: etch should only ever be applied to area of bracket placement(apparently not true)
When you flatten the curve of spee... do you increase arch length or arch perimeter?arch length (a-p measure)
you should flatten the curve of spee unless you have a class ___ patientClass 3
per the rowing effect whenever you level... teeth move/tip _____-ly (mesial/distal)mesially
what is the third phase of ortho tx?Arch Coordination
Arch coordination is associated with ___ order movementsfirst
first order = what dimensionin out (BL)
second order = what dimensionmesio-distal
third order = ____torque
what are the three general arch forms?broad, normal and constricted ((there are other
the limits of tooth movement are determined by the space between _____ ____Cortical plates (esp in mandibular anterior)
what % of patients have ovoid archform?40
what % of patients have tapered archform?15
what % of patients have broad archform?10
SLIDING mechanics needs what type of wire material?Stainless steel (low friction)
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recommended vertical positioning of bracket
Question Answer
U15.0 mm
U24.5
U35.0
U44.5
U54.0
U63.0
U72.0
L14.0
L24.0
L34.5
L44.0
L53.5
L62.5
L72.5
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