ORTHO802: Deep Bite Treatment & Class II Occlusion (**look at Deep Bite Slides too many words to put into flashcard***)

Etiologies of a Deep Bite

1. ___ jaw growth patterns

2. ___ of incisors

3.____ Of posterior teeth

4. ____ loss

inherited

over-eruption

under-eruption

posterior tooth

The face can be divided into ___

thirds

Top 1/3 of the Face

Trichion to Glabella

Middle 1/3 of the Face

Glabella to Subnasale

Lower 1/3 of the Face

Subnasale to Menton

The Lower Third of the Face can be divided into ___

1/3s

(Subnasale --> Stomion -->Menton)

In Repose, there is about ___ degrees of occlusal plane

3-9

SN to Mandibular Plane normal

32

Frankfort Horizontal to Mandibular Plane normal

25

Obtuse SN to Mandibular Plane= lip ___

incompetent

Acute SN to Mandibular Plane = lip ___

over-closed

Obtuse SN to Mandibular Plane has the subnasale to menton > or < 1/3 of the facial height.

> more than

Acute SN to Mandibular Plane has the subnasale to menton > or < 1/3 of the facial height

< less then

You cannot diagnose the condition accurately without knowing the ___ pattern

skeletal

Vertical Skeletal Patters

1. Optimal __ and ___ heights

2. ___ / ___-erupted anterior and posterior maxillary teeth

anterior , posterior maxillary

over/under

Posterior Bite Collapse

when mandibular molar is lost, the teeth next to it begin to angulate towards the tooth

maxillary posteriors overerupt

mandible reotate up

maxillary incisors procline and space opens

A High Smile Line has the lip at the ___

FGM

Full Step Class II Division 1 Malocclussion

MB cusp of Maxillary 1st molar is mesial to the buccal groove of the mandibular molar.

Typically excessive overjet of 7 mm

Full Step Class II Division 1 has ___ mm of overjet

7

Class II Division 2 Maloclussion has which teeth proclined

lateral incisors

Class II Division 1 has __ incisors

proclined

Class II Division 2 has ___ central incisors

retroclined

When someone has a Class II on only one side, such as the RIGHT, what is it classified as?

Class II Sub-Division RIGHT

With a sub-division Class II, the dental midline is __

assymetric

What is the most common malocclusion in the US?

Class I 65%

What is the second most common malocclusion in the US?

Class II 15-25%

Class II Dental Malocclusion due to INTER-jaw skeletal discrepancy TYPES (5)

A. mandible back

B. Maxilla forward

C. max and mand back and forward

D. both max and mand back

E. both max and mand forward

What are the 2 most common Class II Dental Malocclusions due to INTER-jaw skeletal discrepancy?

1. Mandible is too far back

2. Both mandible and Maxilla are too far back

Class II Dental Malocclusion due to INTRA-jaw dental discrepancy types (5)

A. mandible incisors are retroclined

B. maxilla incisors are proclined

C. Both max and mand are retro/procliend

D. both too retroclined

E. both too proclined

Class II Elastics

Carriere Motion Appliance

Maxillary Distalizing Appliances

Which premolar is extracted in the maxilla and mandible to correct Class II?

1st premolar

2nd premolar

Potential Effects of Orthopedic Appliances

1. ___ maxillary growth

2. __ of maxillary teeth

3. ___ remodeling

4.possible__ growth differential

5. ___ of mandibular teeth

6. (?) not in slide

7. ___ of occlusal planes

1. retard

2. retract

3. condyle-fossa

4. mandibular

5. procline

7. rotation

Cervical Pull Headgear pulls mandible ___ and __

down and back

> ____ hours = tooth movement and orthopedic changes

6-10 hours

High Pull Headgear pulls mandible __ and ___

up and back

Mara Appliance

Twin Block Appliance

Frankel Appliance

Forsus Appliance

Herbst Appliance

Potential Effects of Herbst Appliance

1. ___ of maxilla

2. ___ upper teeth

3. __ lower teeth

4. ___ adaptation and __ rotation of occlusal planes

5. possible acceleration of __ growth

6. possible __ remodeling

1. retardation

2. distalize

3. mesialize

4. dento-alveolar , clockwise

5. mandibular

6. TMJ