Ortho - Lecture 1: History of Ortho

Question 1

Orthodontists deal with facial _________ and _______ and their undesirable effects on oral function and esthetics

Answer 1

growth; form

Question 2

Orthodontists control/modify some aspects of _________

Answer 2

growth

Question 3

Orthodontists adjust movement of _____ to mask undesirable facial features

Answer 3

jaws

Question 4

T/F: Malocclusions are not life threatening, only a few are physically disabling

Answer 4

True

Question 5

What do some malocclusions interfere with?

Answer 5

Oral hygiene
Oral function
Mastication
Speech

Question 6

Considered the “father of orthodontics”

Answer 6

Norman Kingsley

Question 7

What type of appliances did Norman Kingsley invent?

Answer 7

Cleft palate correction

Question 8

Who is associated with a technique known as “jumping the bite with the use of a bite plate”?

Answer 8

Norman Kingsley

Question 9

Considered the “father of modern orthodontics”

Answer 9

Edward Angle

Question 10

What type of appliances did Edward Angle invent?

Answer 10

Malocclusion correction

Question 11

Edward Angle’s final appliance was the ___________ system, which most modern systems are derived from

Answer 11

Edgewise

Question 12

Edward Angle believed if you place teeth in alignment, the _______ will follow (ext of teeth was taboo)

Answer 12

jaws

Question 13

Who established the first orthodontics school in 1900?

Answer 13

Edward Angle

Question 14

What was the first recognized specialty in dentistry?

Answer 14

Ortho!

Question 15

Angle’s postulate was that which teeth were the key to occlusion?

Answer 15

Maxillary 1st molars

Question 16

Describe Angle’s postulate

Answer 16

MB cusp of max 1st molar occludes in B groove of mand 1st molar

Question 17

The line of occlusion should follow a __________ curve

Answer 17

catenary

Question 18

Which line of occlusion?

Curve should pass through the central fossa of posterior teeth and lie along cingulum of anterior teeth

Answer 18

Maxilla

Question 19

Which line of occlusion?

Same line runs along buccal cusps and incisal edges of anterior teeth

Answer 19

Mandible

Question 20

What type of malocclusion?

Normal relationship of 1st molars; line of occlusion incorrect due to malposed teeth, rotations, etc

Answer 20

Class I malocclusion

Question 21

What type of malocclusion?

Mandibular 1st molar is distal to maxillary 1st molar; maxillary canines are mesial to mandibular canines; line of occlusion not specified

Answer 21

Class II malocclusion

Question 22

What type of malocclusion?

Protruding maxillary incisors; associated with underdeveloped lower jaw, protrusive upper jaw, narrow arch, flared lower incisors

Answer 22

Class II Division 1 malocclusion

Question 23

What type of malocclusion?

Retruding or bunched maxillary incisors; associated with underdeveloped lower jaw, deep bite, laterals/canines in labioversion while centrals are upright with minimal overjet

Answer 23

Class II Divison 2 malocclusion

Question 24

What type of malocclusion?

Mandibular 1st molar is mesial to maxillary 1st molar by 1/2 cusp width or more; maxillary canines are distal to mandibular canines; line of occlusion not specified

Answer 24

Class III malocclusion

Question 25

What type of malocclusion?

Overdeveloped lower jaw; underdeveloped/constricted upper jaw; upright lower incisors; flared upper incisors

Answer 25

Class III malocclusion

Question 26

Pros of Angle’s classification (3)

Answer 26

Simple, widely accepted, has stood test of time

Question 27

Cons of Angle’s classification (5)

Answer 27

Focuses only on dentoalveolar relationships
Does not recognize skeletal differences
Ignores esthetics
Does not include vertical/transverse dimensions
Does not recognize tooth size differences

Question 28

Angle’s classification has been extended to include _________ patterns now

Answer 28

skeletal

Question 29

What modern classification?

Comprised of 5 main characteristics, which leads to development of a diagnosis:

Intra-arch alignment
Soft tissue profile
Transverse plane of space
Sagittal (A-P) plane of space
Vertical plane of space

Answer 29

Ackermann and Proffit classification

Question 30

Evaluation of the facial profile helps anticipate the __________ and __________ relationships

Answer 30

skeletal; occlusal