ORTHOdontics PGI PRINCIPLES OF WIRE BENDING FACULTY

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					ORTHOdontics              PGI


PRINCIPLES OF WIRE BENDING
INCLUDES LAB EXERCISES ON:
ARCH FORMING AND WIRE BENDING
____________________________________________________________________________________________________________
_________

FACULTY:     Fares Abou Obeid, DDS.

Goals: This course should enable the resident to:
   1. Be introduced to the materials, pliers and instruments used in the orthodontic
       practice.
   2. Know the different theories concerning the arch form.
   3. Understand the purpose and indications of placing the first, second and third
       order bends.

Objectives: At the end of this course, the resident should know how to:
   1. Perform different arch forms with a straight wire.
   2. Place different types of bends in a working wire, so it can be used in the mouth.
   3. Compensate with bends to deficiencies in bracket positioning.




____________________________________________________________________________________________________________
________
         COURSE DURATION AND SCOPE: This course is scheduled between October and December for
the first year residents. It is given every Monday at a 4-hour session between 8:00 a.m. and 12:00 a.m. and
imparts fundamental knowledge on wire bending that is pre-requisite to ameliorate the skills of residents in
wire bending and to understand the indications of different types of bends used in daily orthodontic
practice.

POLICY ON EXAMINATIONS: One examination is given for this course, usually during the progress
examination in December. During the course, a number of practical assignments on wire bending may be
given. Their cumulative weight in proportion to the final grade may not exceed 50%.
PRINCIPLES OF WIRE BENDING
-
________________________________________________________________________
___
SUMMARY OUTLINE               - COMMONLY USED PLIERS, INSTRUMENTS, AND
MATERIAL
                                                                          - ARCH FORM
                                                                          - 1st ORDER BENDS
                                                                          - 2nd ORDER BENDS
                                                                          - 3rd ORDER BENDS
                                                                          - HEAT TREATING:
ANNEALING
                                                                          - CLINICAL
INDICATIONS OF LOOPS
________________________________________________________________________
___
COURSE OUTLINE


1. COMMONLY USED PLIERS, INSTRUMENTS, AND MATERIAL

2. ARCH FORM

3. 1st ORDER BENDS
    A. Functions
    B. Maxillary arch
          a. Lateral in-set
          b. Cuspid off-set
          c. 1st molar off-set + toe-in
          d. 2nd molar off-set
    C. Mandibular arch
          a. Cuspid off-set
          b. 1st molar off-set + toe-in
          c. 2nd molar off-set

4. 2nd ORDER BENDS
    A. Gable bends
    B. Esthetic bends
    C. Cuspid tip bends
    D. Tip-back bends
    E. Step-up and step-down bends
    F. By-pass bends
    G. Compensating bends
     H. V-bends
     I. Bypass arches
     J. Arch loops

5. 3rd ORDER BENDS
    A. Continuous torque
    B. Progressive torque
    C. Segmental torque
    D. Individual torque
    E. Progressive torque (spiral torque)
    F. Passive torque
    G. Differential torque
    H. Tip and torque relationships
6. HEAT TREATING / ANNEALING

7. CLINICAL INDICATIONS OF LOOPS
    A. Alignment
    B. Leveling
    C. Rotations
    D. Tipping and uprighting
    E. Torquing
    F. Closing and opening spaces
    G. Intrusion
    H. Extrusion
    I. Space maintenance
    F. As stops


 REFERENCES

1.   Clinical orthodontics (Vol 1-2). Charles H. Tweed, Mosby 1966.

				
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