This document provides an introduction to orthodontics. It defines orthodontics as the study and correction of misaligned teeth and jaws. The document outlines the aims of orthodontics as achieving functional efficiency, structural balance, and esthetic harmony. It also discusses the scope of orthodontics, including altering tooth position, skeletal patterns, and soft tissues. Finally, it lists the main branches of orthodontics as preventive, interceptive, corrective, and surgical orthodontics.

2. INTRODUCTION TO
ORTHODONTICS
Resource faculty:
Dr.Prabhat Ranjan Pokhrel
Head of department
Dr.Rajesh Gyawali
Assistant professor
Dr. Jamal Giri
Assistant professor
Presented by :Alka Singh
Roll no 472

4. CONTENTS
•DEFINITION
•AIMS OF ORTHODONTICS
•SCOPE OF ORTHODONTICS
•BRANCHES

5. Orthodontics
Orthos = correct
Odontus =teeth

6. DEFINITION
“Orthodontics includes the study of growth and
development of the jaws and face particularly ,and
the body generally as influencing the position of
teeth ;the study of action and reaction of internal
and external influences on the development and
the prevention and correction of arrested and
perverted development”
–british society for study of orthodontics(1992)

7. • ACCORDING TO AMERICAN BOARD OF ORTHODONTICS
“Orthodontics is that specific area of dental practice that has as
its responsibility the study and supervision of the growth and the
development of the dentition and its related anatomical
structures from birth to dental maturity, including all preventive
and corrective procedures of dental irregularities requiring the
repositioning of teeth by functional or mechanical means to
establish normal occlusion and pleasing facial contours”.

8. Why orthodontics?
•Malocclusion and its sequale

15. • Poor facial appearance
• Risk of caries
• Predisposition to periodontal health
• Psychological disturbances
• To close diastema
• Oral habits
• Correction of speech defects
• Risk of trauma: Class II malocclusion

16. AIMS
Jackson’s
triad
Functional efficiency Structural balalnce
Esthetic harmony

17. Functional efficiency It depends upon correct relationship of teeth to
each other and their orientation to skull as a whole to permit a
satisfactory functioning of orofacial apparatus
Structural balance :stable orthodontic treatment is best
achieved by maintaining a balance between dentoalveolar
system, the skeletal system and soft tissue
Esthetic harmony: It is a matter of proportion in shape,
size and orientation of dental organs as a whole in their
relationship to other facial factors

18. GOAL
• Is not ‘just cosmetic’…. It reflects the patient’s
desire to improve their social acceptability and
eliminate discrimination based on appearance,
which can affect their quality of life greatly

19. SCOPE
• ALTERATION IN TOOTH POSITION
• ALTERATION IN SKELETAL PATTERN
• ALTERATION IN SOFT TISSUE PATTERN

20. BRANCHES
• PREVENTIVE ORTHODONTICS
• INTERCEPTIVE ORTHODONTICS
• CORRECTIVE ORTHODONTICS
• SURGICAL ORTHODONTICS