Monday, October 17, 2011

AN ORTHODONTIC LECTURE NOTE ON INTRODUCTION TO FIXED APPLIANCE


INTRODUCTION TO FIXED APPLIANCE
Appliances that are fixed or fitted onto to the teeth by the operator & cannot be removed by the patient at will are called fixed appliance.
Components of Orthodontic Fixed Appliances
Advantages:-
Can do complex tooth movement
Better control over tooth movement
Better control of anchorage & extraoral force can be used in conjunction with fixed Eg: Head gears.
Does not require pt co-operation
Better aligning, detailing & finishing of the occlusion
Disadvantages:-
Difficult to maintain good oral hygiene
More time consuming to fix & adjust
More conspicous and not esthetically pleasing   
Requires special training of the operator
Patient visit the orthodontist at regular intervals
Comparatively expensive
Various tooth movement brought about by fixed appliances:
      Tipping
Bodily movement
Torquing
Uprighting
Rotations
Extrusion & Intrusio


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