MF NUMBERS Flashcards
% ectopic eruption?
1-3%
What portion of Class II population is mandibular retrognathic?
75%
Most common primary relationship?
Flush
Phase I Class II showed skeletal improvement in ___%?
75%
- Ideal to start late mixed dentition so hit PVH (unless lower lip habit or muscular dysfunction habit —> start early)
- Treat one phase only
What percent of crowding can be resolved with LLHA?
70-75%
% of children with anterior open bite that will spontaneously correct with development of adult swallow?
80%
% bone loss in 5 years? First 6 months? Over 5 year?
- 34%
- 23%
- 11%
If allow canine to erupt into lateral area and then distalize, what percent bone loss/4 years?
1%
0.4mg folic acid prevents cleft in what %?
25-50% (Actually 33%)
% missing 3rd molars, mandibular premolar, maxillary lateral?
- 20% with 13x more common of missing another tooth
- 3.4%
- 2.2%
Most common impacted teeth?
U8, L8, U3, Md 4/5
Stability of anterior open bite treatment: surgery vs ortho?
82% surgery
75% ortho
Increase in 1mm expansion: ____mm arch length
0.7mm
What percent root formation for auto transplantation?
75%
Alveolar graft for CL/P canine root formation?
50-75%
SARPE relapse?
10% - most stable way to correct max transverse deficiency
% relapse for RPE?
25%
% relapse for 3 piece LeFort?
50%
% relapse for maxillary impaction?
10% (drops down 2mm)
Space needed for implant?
6mm - 1mm each side and 4mm for implant
% extractions in private practice?
15-20%
% of impacted canines? Which gender more common? % bilateral? Next to missing lateral?
- 1-2%
- 2x more in F
- 8% bilateral
- 2.4x next to missing lateral
Which canines are more likely genetic, 85% have enough room, and 2/3?
Palatal
Which canines are due to TSALD, 17% have enough room, and 1/3?
Labial
Open vs closed for impacted canines?
Open: mixed dentition
Closed: Later
Laterals should be ___% width of central incisor? Frontal view ____%. Width is ____% of length.
- 75%
- 62%
- 80%
