Chapter 1 G: Concept Of Orthodontics

Question 1

Ortho means?

Answer 1

Straight

Question 2

In the beginning only anterior malpositions were corrected, what made orthodontics extend to other dental areas?

Answer 2

For those anterior movements, posterior teeth support was needed

Question 3

The purpose for orthopaedics is?

Answer 3

To correct the irregularities of the jaw

Question 4

Who distinguished between orthodontics and orthopaedics?

Answer 4

Chaplin Harris in 1849

Question 5

Who is considered as the father of orthodontics?

Answer 5

Edward Angle

Question 6

Orthodontics is considered as?

Answer 6

The branch of dentistry concerned with preventing or correcting irregularities of the
teeth

Question 7

Angle defined orthodontics as?

Answer 7

The science which aims to correct teeth malocclusions

Question 8

Moyers defined orthodontics as?

Answer 8

The branch of dentistry that deals with the study of the skull growth, development of the
occlusion and treatment of dentofacial anomalies

Question 9

Mayoral defined orthodontics as?

Answer 9

Is that part of the science dealing with facial and oral morphology in different stages
of growth and development, as well as with the knowledge, prevention and correction of the
deviations of such morphology and normal functions

Question 10

Juan Canut defined orthodontics as?

Answer 10

Orthodontics is the stomatological science that studies and meets the
development of the occlusion and its correction through mechanical appliances, which deliver physical forces on the dentition and its environment

Question 11

Which of the following statements is incorrect about orthodontics?

A: The diagnosis, prevention, interception and treatment of all kind of malocclusions and skeletal associated anomalies.

B: The design, application and control of orthodontic appliances.

C: Restoration of natural teeth and/or replacement of missing teeth and oral tissues.

D: The preservation and guidance of the dentition and supporting structures, in order to obtain and maintain optimum dentomaxillofacial relations in a functional and aesthetic balance with the cranio-facial structures.

E: Integral health of the whole stomatognathic system, achieving an optimal occlusion and
function and establishing an aesthetic facial harmony.

Answer 11

C

Question 12

Goals of orthodontics?

Answer 12

1. To diagnose, prevent, and treat dental malocclusions and dentofacial anomalies
2. To design, implement, and control orthodontic appliances
3. To know the dentition and the supporting structures (bone, gingiva)
4. To achieve facial and dental harmony

Question 13

3 factors of malocclusion:

Answer 13

• prevention
• interception
• treatment

TIP

Question 14

3 factors of orthodontic appliances:

Answer 14

• design
• application
• control

CAD

Question 15

Orthodontics and its relationship with myofunctional therapy?

Answer 15

1. Oral breathers with hypotonicity of the orbicularis oris muscle.
2. Mentalis muscle abnormal contraction.
3. Atypical deglutition habit.
4. Labial interposition habit due to mandibular retrognathism.

Question 16

Orthodontics and its relationship with surgical therapy?

Answer 16

1. Major surgical operations: orthognathic surgery, for volume, shape and position correction of the jaws. Examples: cleft lip and palate.
2. Minor surgical operations: impacted teeth, cysts, frenulum, gingival recessions, dental extractions.

Question 17

Orthodontics and its relationship with prosthetic-restorative-aesthetic therapy?

Answer 17

1. Teeth number alterations: agenesis (space opening or space closure to place implants or not), supernumerary (mesiodens).
2. Teeth shape alterations (conoid teeth).
3. Teeth size alterations: big (macrodonita)/ small (microdonita).

Question 18

Orthodontics and its relationship with periodontal therapy?

Answer 18

1. Gingival hypertrophy.
2. Gingival hypertrophy during/after an orthodontic treatment.
3. Gingival recessions.
4. Fibrotomies: retention purposes.
5. Corticotomies: for faster treatments.

Question 19

What is the most important part of orthodontics?

Answer 19

Diagnosis