Abo Numbers

Front 1

Limited Opening is: ______mm

Back 1

below 27mm (23mm is example given)

Front 2

Maximum Opening and Lateral excursive in Adolescents and Adults:

Back 2

50mm and 12mm lateral excursive

(distance between incisal edges + overbite)

Front 3

Most Cranium growth completed by: ___yrs

Back 3

5 years

Front 4

For adult, breath given every _____seconds

Back 4

5 seconds

Front 5

Wavelength for curing light/ Optimal wavelength for Camphorquinone ______nm

Back 5

460-480 nm

Front 6

Concentration of Sodium Fluoride in Mouthwash for ortho patients _____%

Back 6

0.05%

Front 7

Tongue begins formation at week:

Back 7

week 4 in utero

Front 8

Tongue reaches maximum size at age:

Back 8

8

Front 9

Primary Palate formed during ____ week.

Back 9

6th week, 6-8 weeks

Front 10

Secondary Palatal closure in fetus begins at___wks:

Back 10

10 weeks, Completed by: 12 weeks

Front 11

At what time during fetal development does CL/CP occur:

Back 11

6-8 weeks

Front 12

Cleft Palate Develops during what trimester?

Back 12

First trimester of pregnancy

Front 13

Cleft Palate incidence:

Back 13

1 in 750 births

Front 14

Most effective time to close a cleft palate surgically:

Back 14

one year after birth

Front 15

When should you do alveolar graft:

Back 15

when canine root is 2/3 formed (to start eruptive process)

Front 16

Best time for NAM:

Back 16

Within 3 months after birth

Front 17

Most developmental anomalies occur when:

Back 17

Embryonic (5-10 weeks) stage

Front 18

Fetal Alcohol Syndrome occurs:

Back 18

by day 17 in utero

Front 19

Downs Syndrome prevalence:

Back 19

1 in 800 births

Front 20

0.4mg folic acid reduces chance of cleft lip/palate by: _____%

Back 20

33%

Front 21

Most neurons present in fetus at: _____ wks

Back 21

10 weeks after conception

Front 22

Most synapses in infant at age:

Back 22

2-3 years

Front 23

Fusion of Inter-sphenoidal suture:

Back 23

At birth, shortly after birth, 3 months after birth

Front 24

Fusion of Spheno-Ethmoidal suture:

Back 24

7 years

Front 25

Fusion of Spheno-Occipital Suture at:

Back 25

15-16 years , 15-20 years

Front 26

Ossification of Sesamoid bone in Hand-Wrist film means:

Back 26

1 year before maximum growth spurt

(30 percent growth completed);

60-70% growth remaining.

SMI:4

Front 27

Peak Height velocity age for girls and boys:

Back 27

12 girls, 14 boys

Front 28

PHV happens up to how many months after puberty:

Back 28

from puberty for up to 24 months after

Front 29

In normal girls, PHV happens:

Back 29

In normal girls, PHV happens 18-24 months before menarche

Front 30

In late-maturing girls (late menarche), PHV happens:

Back 30

6-11 months before menarche

Front 31

PVH is measured in:

Back 31

cm or inches PER year (it is a rate)

Front 32

Physician concerned if child's growth above ____ percentile.

Back 32

95th percentile

Front 33

More radiation: tech 99 or CT

Back 33

Tech 99 > CT

Front 34

Increase in mandibular intercanine width from primary to permanent:

Back 34

2mm , “slightly increase “

Front 35

Primary to permanent arch length change increase or decrease?

Back 35

slight decrease

Front 36

Greatest amount of Mandibular arch length from mesial of molars is at age:

Back 36

6

Front 37

Greatest loss of arch length:

Back 37

Mx second primary molar at age 6.5

Front 38

2-3mm CO/CR (backwards) shift at completion of treatment. What should you do?

Back 38

distal to middle of lateral incisor 91%

If tip is mesial: 64% ??????? What is this?,

Front 39

Incidence of gingival recession in adults

Back 39

68% incidence,

more Mn than Mx,

more symmetrical than asymmetric

Front 40

Percentage of patients that need perio treatment prior to ortho

Back 40

5-10% of children and 20-25% of adults

Front 41

Minimum osseointegration necessary for implant success: ___%

Back 41

5%

Front 42

When 300 grams of force applied for 3 months to titanium implants in animal studies, percentage successful____%

Back 42

94%

Front 43

Estimated healing time for implant in maxilla:

Estimated healing time for implant in mandible:

Back 43

Max: 6-8 months

Mnd: 4-6 months

Front 44

How much room needed for implant _____mm

Back 44

7 mm

Front 45

When placing implant, head of fixture should be how far apical to desired gingival margin: ___mm

Back 45

4 mm

Front 46

Best time for implant:

Back 46

After growth has ceased

Front 47

Serial Ceph confirms no growth. How many months to wait to ensure no further growth?

Back 47

6 months OK, 12 months is better

Front 48

Will the children keep growing?

Back 48

Yes

Will it matter significantly? No

Front 49

What percentage of US and Northern European have Class II malocclusion:

What percentage of Class II due to retro Mn

Back 49

15-20%

75%

Front 50

Adenoidectomy success in correcting open mouth breathing:

Back 50

80%

Front 51

What percentage of non-ectopic third molars erupt normally

Back 51

33%

Front 52

Normal oral temp

Back 52

35-37 degrees C

Front 53

Plus/Minus 1 Standard Deviation includes:

Plus/Minus 2 Standard Deviation includes:

Plus/Minus 3 Standard Deviation includes:

Back 53

66-68% of sample

96% of sample

99.7% of sample

Front 54

Variance calculated by:

Back 54

square root of variance gives you the SD

e.g. mean 100, Variance 64. so SD is 8.

So 116 is 2 SDs above the mean.

Front 55

Correlation

If two samples are linearly related, correlation coefficient R = _____

No relationship, R = ____

Back 55

If two samples are linearly related, correlation coefficient R = 1

No relationship, R = 0

Front 56

Most affected by outliers:

Most affected by large sample size:

Back 56

Most affected by outliers: MEAN

Most affected by large sample size: MEDIAN

You select median because the median is an important value. It says something different from the mean. You might also select it for some statistical calculations because it's robust against certain problems like outliers or skew. When sample size gets smaller it'sactually much more sensitive to skew than the mean.

Front 57

Anterior Cranial base Growth Completed by ___ yrs

Back 57

7 years

Front 58

What age can you start to superimpose on S-N:

Back 58

7 years

Front 59

Anterior Cranial Base stops growing and become stable for use in superimposition at age:

Back 59

7 years

Front 60

Neural growth completed: ____ yrs

Back 60

7 years

Front 61

Most rapid Somatic growth:

Back 61

Conception to birth

Front 62

11 yo male, in a 2 year period mand molars will erupt ____mm

Back 62

1.5mm

Front 63

11yo male, lower facial height will increase ____mm/yr

Back 63

1mm/year

Front 64

Maximum width of skull achieved at age:

Back 64

Age 7-8

Front 65

Human Eye sees: ___shades of grey

Back 65

16 shades of grey

Front 66

Digital Photography uses ___-bit which gives ____ shades of gray

Back 66

8-bit which gives 256 shades of gray

Front 67

Gemination:

Back 67

1 root, 1 pulp

fused crowns

Front 68

Fusion:

Back 68

2 roots, 2 pulps

fused crowns

Front 69

Hypodontia:

Back 69

missing 1-5 teeth

Front 70

Oligodontia:

Back 70

missing 6+ teeth. MSX1 defective

Front 71

If missing 3rd Molars:

_____% chance missing Lower 5s

_____% chance of missing U2

_____x chance tobe missing other teeth.

Y/N: increased likelihood of supernumerary or peg lateral

Back 71

If missing 3rd Molars:

3.4% chance missing Lower 5s

2.2% chance of missing U2

13x chance to be missing other teeth.

increased likelihood of supernumerary or peg lateral: NO

Front 72

Lip Bumper expansion:

___% percent is accomplished in first 100 days

then __% in next 100

then __% in last 100

Back 72

LIP BUMPER: 50-40-10

50% percent is accomplished in first 100 days, then 40% in next 100 days

then 10% in last 100 days

Front 73

If you decrease distance between magnets by half, the force increases: ____ %

Back 73

400%

Front 74

If you increase distance between magnets by twice,

e.g 10 mm -> 20 mm, then the force will

Back 74

Magnetic force equation: 1/(r^2), r being the distance between magnets.

So Force will decrease quadruple

Front 75

Phase I class 2 correction: ___% success rate.

Twin Block __ % skeletal correction

Back 75

Phase I class 2 correction: 75% success rate

Twin Block 55% skeletal correction

Front 76

How to do pure rotation:

Back 76

1st order bend

Front 77

Duration of threshold of light force to produce tooth movement: ____ hrs/day

Back 77

4-6 hrs a day

Front 78

In Physiologic response to sustained pressure, tooth begins movement after: __ hours of force application

Back 78

48 hours of force applicatoin

Front 79

Normal eruptive force of a tooth is: ___ grams

Back 79

2-10g

Front 80

Optimum canine retraction force: __________ grams

Back 80

100-150g

Front 81

Genes responsible for tooth agenesis:

Back 81

MSX1, PAX9

Front 82

When do primary teeth start to calcify in fetus:

Back 82

14 weeks (Upper and lower central incisors)

Front 83

Mineralization of Perm First Molars Begins:

Back 83

At birth

Front 84

At birth, which tooth has COMPLETED "crown" calcification:

Back 84

mandibular incisors

Front 85

Calcification of Upper and lower third molars:

Back 85

varies greatly

Front 86

Fusion of Mandibular Symphysis:

Back 86

Shortly after birth; 3 months after birth; within first year

Front 87

How long to retain extruded tooth for stability:

Back 87

6 months

Front 88

Fraction of root formation when tooth begins eruptive movement:

Back 88

2/3

Front 89

Fraction of root formation upon tooth emergence into oral cavity:

Back 89

3/4

Front 90

How long does it take for completion of root formation after tooth eruption:

Back 90

2-3 years

Front 91

Minimum # of Lobes to make a tooth:

Back 91

4 lobes

Front 92

Peak incidence of dental trauma occurs at what age:

Back 92

8-10 years

Front 93

For adult and child what is rate of compression:

Back 93

100 per minute

Front 94

Sequence of Adult CPR:

Back 94

30 compressions, 2 breaths

Front 95

How many minutes can the brain survive without oxygen:

Back 95

6 minutes

Front 96

Incidence of missing lateral incisor

Back 96

1-2%

Front 97

Ext primary B for 3 results in ___% bone loss in __ years

Back 97

Ext primary B for 3 results in 1% bone loss in 4 years

Front 98

In treatment of openbite,

surgical success ___%

nonsurgical success ___%

Back 98

In treatment of openbite,

surgical success 82%

nonsurgical success 75%

Front 99

Minimum total filtration required by a machine that operates in excess of 70 kvp:

Back 99

2.5mm of aluminum (or the equivalent of that)

Front 100

How long film in fixer?

Back 100

10 minutes

Front 101

AAO standard facial photo size

Back 101

1/4 of life-size

Front 102

X-ray operators should not exceed:

Back 102

0.1 Roentgens per week (100 milli Roentgens)

Front 103

Absorbed dose in unit of?

Back 103

Grays, microGray

Front 104

Effective and Equivalent doses in unit of?

Back 104

Sievert, microSievert

Front 105

_______ takes organ being irradiated into consideration?

Back 105

Effective dose

Front 106

Definition of normal Mandibular Plane angle:

Back 106

27-37 degrees

Front 107

Difference between SN and Frankfort Horizontal

Back 107

7 degrees

Front 108

Incisor angulation to arch length ratio

Back 108

10:8;

10 degrees of retroclination requires 8mm of space (ie extraction)

Front 109

Nasolabial angle norm?

Back 109

94-110 deg

Front 110

Ideal percentage of lower facial height

Back 110

55%

Front 111

16yo female, ratio of upper to lower facial height is?

Back 111

43:57

Front 112

N-ANS is what percentage of N-me?

Back 112

45%

** remember that lower face height is slightly over half of total face height ie 55-57%

Front 113

Hyoid derived from which branchial arch?

Back 113

2 (body)

3 (greater wings)

Front 114

How many bones in craniofacial complex?

Back 114

8 cranial, 14 facial, TOTAL 22

Front 115

How many cartilages in inferior 1/3 of nose

Back 115

3

Front 116

Most nasal septum deviations occur in?

Back 116

inferior 1/3 of nose

Front 117

Hyoid bone located?

Back 117

between C3 and C4

Front 118

Widest cervical vertebrae from C1 to C5

Back 118

C1 (atlas)

Front 119

Distance from CEJ to alveolar crest?

Back 119

2mm

Front 120

To prevent black triangle, maximum distance from contact to alveolar crest?

Back 120

5mm

Front 121

How many branches of facial nerve?

Back 121

5

Front 122

Normal incubation period for Hep B and C

Back 122

1-6 months

Front 123

Which molecules activate aracadonic acid pathway/prostaglandin production?

Back 123

IL-1, IL-6, TNF alpha, BMP

** NOT neocytokines!

Front 124

Penicillin allergy patient with hx of Rheumatic Fever?

Back 124

Give erythromycin

Front 125

Worst to best in terms of chewing efficiency

Back 125

Class III, Class II, Class I

Front 126

Pain due to heavy pressure happens after:

Back 126

after 3-5 seconds

Front 127

Acceptable CO/CR shift

Back 127

1mm CO/CR shift but not a lateral shift

Front 128

Chances of missing max lateral incisor:

Back 128

1-2%

Front 129

Chances of missing lower 5's:

Back 129

3.5%

Front 130

Sample size for cephalometric study must be at least:

Back 130

15 patients

Front 131

For a research hypothesis to be accepted, chance for groups tohave arisen from random chance is:

Back 131

5% (p<0.5)

Front 132

When to use twin block:

Back 132

late mixed dentition

Front 133

When replacing missing lateral incisor with implant, we need:

Back 133

2/3 width of central incisor. Aka 66% of the width of the central.

Front 134

When placing Maryland bridge, you want:

Back 134

Incisors perpendicular to occlusal plane. Choice given is 10-15 deg

Front 135

Posterior to Anterior face height ratio is:

Back 135

40:60

Front 136

Planum sphenoidium:

Back 136

A plane surface on the sphenoid bone, in front of the sella turcica, connecting the two lesser wings, and forming part of the anterior cranial fossa and especially later in life, the roof of the anteriormost portion of the sphenoidal sinus. Synonyms: Jugum sphenoidale, Planum sphenoidale

Front 137

Herbst and Mara ___________ the occlusal plane, and Twin block ____________________.

Back 137

steepen; controlled Mn plane angle.

Front 138

Herbst demonstrates __________ overbite and overjet.

Back 138

decreased

Front 139

True or False?

Herbst does not change MP angle that much

Back 139

True

Front 140

Intensifying screens ________ contrast and ________ exposure times, radiation

Back 140

Increase Contrast. Decrease Exposure times and radiation

Front 141

Minimum total filtration required by xray machine operates greater than 70 KvP

Back 141

2.5 mm Aluminum

Front 142

Distance between Midsagittal plane to Film and Source to MSP?

Back 142

15 cm btw MSP to Film and 60 inches(5ft) btw Source to MSP

Front 143

KvP affects _______, while milliamps and exposure time affects __________.

Back 143

Contrast (Higher KvP=more penetration, darker image, low contrast).

Density (Increased mAmps and Exp. time increases dentisty).

Front 144

In CBCT, voxel size affects

Back 144

Resolution and accuracy. NOT magnification. CBCT uses small voxel size for good resolution. (Decreased voxel size=decreased field of view=increased resolution

Front 145

Term: Area of the dental anatomy that is reproduced distinctly on Pano?

Back 145

Focal trough

Front 146

Midline point on PA ceph?

Midline point on lateral ceph?

Back 146

Menton or ANS on PA ceph

Point A on lateral ceph

Front 147

ABO mandibular plane points?

Face angle points?

Back 147

Constructed Gonion to menton

FH and N-Pog

Front 148

What relatively remains constant with age?

Back 148

Y-axis

Front 149

Reference line used in Down analysis?

Back 149

Frankfort horizontal. Not S-N or N-Ba

Front 150

Broadbent registration point, which is used in Downs for superimposition is the intersection between

Back 150

Bolton-Nasion and perpendicular Sella

Front 151

Floor of orbit or inferior orbital wall is made of which 3 bones?

Lateral wall of orbit?

Back 151

Maxillary, Zygomatic and Palatine

Frontal process of Zygomatic and greater wing of Sphenoid

Front 152

Name of sinuses or duct that drain into each Meatus.

Superior, Middle, Inferior meatus

Back 152

Superior: posterior ethmoid cells and Sphenoid sinus.

Middle: Frontal, maxillary, temporal sinus

Inferior: Nasolacrimal duct

Front 153

Origin and Insertion of digastric muscles

Back 153

Origin:

Ant belly: Digastric fossa/ lingual symphysis

Post belly: Mastoid process of temporal bone

Insertion: Both into Intermediate tendon of hyoid bone

Front 154

Cleft lip repair when?

Palate repair when?

Secondary alveolar bone graft+Ortho when?

Orthognathic surgery when?

Implants and other prosthetic procedure?

Back 154

2-3 month, 10-14 month, 6-10 years, 13-18 years, 18 or when growth is complete

Front 155

Prophylaxis Amoxicilin __ g or Clindamycin ___ mg 1 hour prior?

Back 155

2g for Amox. 600 mg for Clinda

Front 156

Line of occlusion in maxilla? Interproximal contacts are ?

Mandible?

Back 156

Central fossas are line of occlusion in maxilla. Interproximal contacts are buccal to the line.

Buccal cusps are line of occlusion in mandible. Interproximal contacts are lingual to that line

Front 157

What would you not do in pt with crepitus (or TMD)

Back 157

Anterior positioning splint. Flat plane is ok

Front 158

Dislocation of mandible can occur only in which direction?

Back 158

Anteriorly

Front 159

ADD without reduction characteristics

Back 159

Limited opening of <27mm

Deviation of jaw

Pain with forceful opening

Closed lock

Front 160

ADD with reduction clicking or popping sounds after ____ mm opening?

Back 160

30 mm

Front 161

No joint sound. Pain in TMJ area

Back 161

Posterior Capsulitis

Front 162

Gorelick states significant decalcification occurs in ___% of orthodontic patients. These patients should wait how long before fluoride ?

Back 162

50%. These patient should avoid large amount of fluoride to allow remineralization. Wait 2-3 months

Front 163

Tartar control contains _______ and reduce ___% of supragingival calculus

Back 163

Pyro phosphate. 50%

Front 164

How many mm upper incisors are in relation to stomion superioris in skeletal open bite?

Back 164

3 mm below Lip

Front 165

Skeletal open bite characteristics

Back 165

Increased height of Max molars

Antegonial notching and high mandibular plane angle

NOT long corpus length

Front 166

Tongue thrust is

Back 166

Adaptive. Not cause of open bite.

Forward resting position of tongue is most likely cause of anterior open bite in 10 year old child

Front 167

Little et al. found how much relapse happen in where?

Back 167

2/3 Mandibular incisors

Front 168

Most stable and least likely to recur

Back 168

COS

Front 169

Class 2 division 2 most likely relapse

Back 169

Deep bite more than rotation. Deep bite stability on correction is more favorable in growing children.

Front 170

Normal intermolar width for adolescents

Back 170

33-35

Front 171

Canine impaction

Back 171

2/3 palatally impacted.

1-2% of maxillary impacted

0.35% of mandibular impacted

8% bilateral

2x more common in females

Front 172

Austenite, martensite

Back 172

Austenite + stress -> Martensite

Martensite + heat -> Austenite (deactivation)

Front 173

Complete nasal obstruction pts, immediate change of head posture measured by increase in craniofacial angle of

Back 173

5 degrees

Front 174

Space discrepancy limit to extraction

Back 174

Upto 4mm

Front 175

To obtain condylar inclination during records

Back 175

Take protrusive wax bite

Front 176

37% phosphoric acid etch 30 sec etch removes __ microns of enamel

15 seconds ____

Back 176

3-10 microns for 30 sec.

8-10 microns for 15 sec.

9% HF for ceramic crown etch

Front 177

TMA wire contains

Back 177

No nickel. Just titanium and molybdenum

Front 178

TMA vs SS

Back 178

SS has highest Stiffness (3x more than TMA) -> lowest flexibility (springiness) (2x less than TMA) -> highest deformity or least resistance to deformity.

Front 179

Strength vs Springiness

Back 179

Strength = Stiffness x Range

Springiness = 1/Stiffness

Front 180

Most frictional wire in SS bracket

Back 180

TMA > NiTi > SS

Front 181

Ideal wire

Back 181

High Strength, Range and Formability

Low Stiffness

Front 182

SS wire composition

Back 182

18% Chromium (corrosion prevention)

8% Nickel (flexibility)

Front 183

Doubling the diameter of SS

Doubling the length of SS

Back 183

2x diameter = 8x strength, 1/16 springiness, 1/2 range

2x length = 1/2 strength, 8x springiness, 4x range

Front 184

NiTi wire has

Back 184

Low load/deflection ratio or rate

Low Formability

Shape memory and Super elasticity

Phase transformation at low transition temperature

Front 185

Austenite:

Martensite:

Back 185

Austenite: gives soft constant force over long time. Higher modulus of elasticity (higher stiffness)

Martensite: after activation phase.

Front 186

Elgiloy

Back 186

Strength increases as heat treated and become same stiffness as SS or non-heat treated Chromium Cobalt

Front 187

Twin block vs Herbst

Back 187

Twin block slightly more effective in correcting : Molar relationship, Sagittal skeletal differential, Greater elongation of mand Ramus, body, increased VDO

Twin block: 55-61% skeletal, 39-45% dental

Front 188

Optimum time for Twinblock

Back 188

During or slightly after onset of puberty peak in growth velocity. Late mixed, early permanent.

Front 189

Twin block effect

Back 189

U6 horizontal/ maxillary molars were near their original sagittal position.

Labial inclination of maxillary inclination was Reduced significantly

Mandibular incisors tipped labially

Front 190

Least vertical control

Back 190

Stopped arch or CPHG

Front 191

To prevent distal tipping of crown

Back 191

HPHG: outer bow should be shorter and mesial to CResist.

CPHG: outer bow should be bent UP above the CResist.

Front 192

Asymmetrical headgear

Back 192

To distalize right side, leave longer and away from cheek. Side effect: lingual crossbite can result. Buccal crossbite on opposite side.

Front 193

Lip bumper

Back 193

45-55% incisors inclination

35-50% molar distalization (distal tip)

5-10% increase in intercanine, premolar transverse

Front 194

Duration threshold of light force to produce tooth movement

Back 194

4-6 hrs per day

Front 195

Movement begins after

Back 195

48 hours of force application

Front 196

With a force of 35-60 gm, possible canine movements are

Back 196

Tipping rotation extrusion (no intrusion or translation)

Front 197

Optimum force to retract canines

Back 197

100-150 grams

Front 198

Average force to intrude central incisors

Back 198

Maxillary CI: 25 grams

Mandibular CI: 20 grams

Front 199

Limiting factor

SARPE

RPE

Back 199

SARPE (no hinge axis): Zygomatic buttress (lateral), Pterygoid plates (posterior)

RPE: Coronoid process

Front 200

Best surgery for TMD patients with class III or anterior open bite

Back 200

Intraoral vertical ramps osteotomy (IVRO)

Front 201

How many days to wait before activation after distraction osteogenesis?

Back 201

5-7 days

Front 202

Symphysis distraction causes

Back 202

Buccal tipping of CONDYLES. not teeth

Front 203

Two deleterious side effects of maxillary impaction

Back 203

Nasal tip raise

Widening of alar base

Front 204

Intramemraneous vs. Endochondral

Back 204

Intramembraneous: Flat bones. Vault. Maxilla.

Endochondral: Long bones. Base. Sphenoid, Ethmoid. Bone develops from hyaline cartilage precursor.

Combination: Occipital, Temporal. Mandible (condylar head is endochondral, mostly intramem)

Front 205

Ratio of amount of bony vs soft tissue advancement in advancement genioplaty?

Back 205

1:1

Front 206

16 year boy class III, surgery to stop the growth of mandible

Back 206

High condylectomy. Girls=14.

Front 207

Percentage of adult pts w perio disease and develop rapid progression of perio disease after ortho tx?

Back 207

10% rapid progrssion. 80% moderate.

Front 208

Bacteria that causes bone loss/ perio disease ?

Juvenile periodontitis?

Back 208

Porphyromonas (Bacteroids) Gingivalis.

Actinobacilus Actinomycetemcomitans

Front 209

Pro inflammatory ?

Anti-inflammatory?

Back 209

Pro: IL-1, 2, 6, 8, TNF-a, IFN-r, PGE2, MMP

Anti: IL- 4, 10, 13

Front 210

After ext of maxillary tooth in anterior region the ridge width decrease by what % in 6month ? 6 years?

Back 210

23% 6 month.

33% 5-6 years

Front 211

U1 or U3 located 5 mm apical to CEJ (or MGJ) of U2. Eruption technique?

Eruption technique for Palatally impacted max canines

Back 211

Closed Eruption

Open eruption

Front 212

Treatment for one wall defect or vertical defect?

Three walled defect?

Back 212

Orthodontic upright and extrusion

GTR

Front 213

Adult gingival recession rate

Back 213

68%

Front 214

Root fracture 1 mm below CEJ. Primary thing to look at?

Back 214

Root length

Front 215

When protracting a molar, TAD should be in

Back 215

Distal to canine

Pilot hole is more stable in mandible bone (not TAD is more stable with pilot hole in any other areas)

Front 216

When 300 gms of force applied for 3 months to titanium implant, success rate of: ____%

Back 216

94%

Force amount to dislodge an implant is not even upto 600g. More force required.

Front 217

Estimated healing time for implant in maxilla and mandible

Back 217

Maxilla: 6-8 months

Mandible: 4-6 months

Front 218

Head of fixture of implant should be how many mm apical to the desired gingival margin?

Back 218

4 mm apical to desired gingival margin

Front 219

Amount of overbite necessary for bonded bridge (or maryland)

Back 219

0.5 mm or less than 1mm

Front 220

What does NOT favor canine substitution?

Back 220

Large canine.

Do Favor: Minimal crowding on lower, class II molar, low gingival margin on canines.

Front 221

After adenoidectomy, what percentage of patient who had severe nasopharyngeal obstruction goes from open mouth to closed-mouth breathing?

Back 221

80%

Front 222

Intermolar width in adults? Adolescent?

Back 222

Adults: 36-39 mm

Adolescent: 33-35 mm

Front 223

Class II population in US

Back 223

15-20%

Front 224

Oral temperature in C and F

Back 224

35-37 C

95-99 F

Front 225

Amount of overbite necessary for bonded bridge (or maryland)

Back 225

0.5 mm or less than 1mm

Front 226

Correlation is measured in

Back 226

Fraction.

Front 227

Chi square measures

Back 227

Observed vs. Expected frequency

Front 228

Extraction of B for 3 results in

Back 228

1% bone loss in 4 years

Front 229

Ameloblastoma __% of all tumors in mouth

Back 229

1%, not 10%

Front 230

Marfans gene affected

Back 230

Fibrillin 1

Front 231

Short distance btw Ar and PTM

Back 231

Max hypoplasia

Front 232

Posselt's envelope final motion is

Back 232

Pure hinge

Front 233

When leveling, consider the wire's

Back 233

Stiffness

Front 234

Max lateral incisor replacement

Back 234

62% of width of Central

Front 235

2-3mm CO/CR (backwards) shift at completion oftreatment. What do you do?

Back 235

Grindmesial incline of upper and distal incline of lower. Rememberthat CO-CR and CR-CO shift are opposite directions and not the same thing.

Front 236

TM Joint sounds are a common finding In what percentage of population:

Back 236

25%

Front 237

Significant decalcification occurs in ___% of patients

Back 237

50%

Front 238

Avoid fluoride for ___ months after ortho to allow WSL to remineralize

Back 238

2-3 months

Front 239

Tartar control toothpaste reduced supragingival calculus by _____% due to _______

Back 239

50% due to pyrophyosphate

Front 240

First meeting of AAO: (Date/location)

Back 240

1900 St. Louis “A-A-O, first meeting Nineteen-O-O”

Front 241

First meeting of ABO: (Date/location)

Back 241

1929 Estes Park, Colorado

Front 242

What percentage of open bites self-correct: ___% & what percentage do we treat: ___%

Back 242

What percentage of open bites self-correct: 80%

What percentage do we treat: 20%

Front 243

Post-puberty, incidence of open bite: (Increases or decreases)

Back 243

Decreases

Front 244

Posttx w extractions, study by Little found what fraction of Mn incisor crowdingrelapse:

Back 244

2/3

Front 245

Normal adolescent intermolar width: 33-35 mm

Back 245

33-35 mm

Front 246

Normal adult intermolar width: 36-39 mm

Back 246

36-39 mm

Front 247

Boltonfrom 6-6 aka mesial of 7 to mesial of 7:

Back 247

91%

Front 248

Completenasal obstruction leads to what percent change in head posture: ____ degrees

Back 248

5 degrees

Front 249

Lowerthird of face is divided into: _____ upper lip and 2/3 ______

Back 249

1/3 upper lip, 2/3 lower lip and chin

Front 250

Invisaligncan handle how much AOB:

Back 250

2 mm

Front 251

Limitof arch length discrepancy to be treated non-ext:

Back 251

4mm (greater than 4, extraction)

Front 252

Swallowingforce with teeth in contact:

Back 252

100 gm

Front 253

Indications for Serial extraction: Cl ____ molar,_______ OB/OJ, _____ crowding of ____ mm or more

Back 253

Cl I molar,moderate OB/OJ, severe crowding of 10mm or more

Front 254

AppropriateForce on TAD: _____ g

Back 254

100-200g

Front 255

Powerchainloses 50% elasticity in: ____ day (s)

Back 255

1 day

Front 256

Etchfor 15 seconds: ______ micron loss

Back 256

8-10 micron loss

Front 257

37%phosphoric acid etch for 30 sec :

Back 257

2-10 micron loss

Front 258

What to use to etch ceramic crown:

Back 258

9% HF acid

Front 259

Whichtype of archwire has no nickel (for nickel allergy pt):

Back 259

TMA

Front 260

SScomposition:

Back 260

18% Chromium, 8% nickel

(Chromiumprevents corrosion, nickel adds flexibility (think Niti)

Front 261

_____ wire as a fingerspring (i.e. a unsupported cantilever)

Back 261

SS

Front 262

Doublethe diameter: Strength/force is ____ x,Springiness is _____, range is ____ oforiginal

Back 262

Strength/force is 8x,Springiness is 1/16, range is 1/2 oforiginal

Front 263

Doublethe length: Strength/force is _____, Springiness is ______x, Range is _____x

Back 263

Doublethe length: Strength/force is 1/2, Springiness is 8x, Range is 4x

Front 264

Repeatthis: “8 times 1/16 gives 1/2. 1/2 of 8is 4.

Back 264

SSR (Strength, resiliency, range)”