![Page 2: General principle Dr. Ahmed AL-Mayali B.D.S M.Sc. Orth. ahmed.almayali@uokufa.edu.iq](https://reader036.vdocuments.us/reader036/viewer/2022070400/56649e395503460f94b2b640/html5/thumbnails/2.jpg)
TYPES OF ORTHODONTIC APPLIANCE1-Removable appliance
2-Fixed appliance
3-Myofunctional appliance
4-Combination between Removable and Fixed appliance
![Page 3: General principle Dr. Ahmed AL-Mayali B.D.S M.Sc. Orth. ahmed.almayali@uokufa.edu.iq](https://reader036.vdocuments.us/reader036/viewer/2022070400/56649e395503460f94b2b640/html5/thumbnails/3.jpg)
Removable orthodontic appliance
Active componentRetentive componentAcrylic base plateAnchorage
![Page 4: General principle Dr. Ahmed AL-Mayali B.D.S M.Sc. Orth. ahmed.almayali@uokufa.edu.iq](https://reader036.vdocuments.us/reader036/viewer/2022070400/56649e395503460f94b2b640/html5/thumbnails/4.jpg)
Material in orthodontic appliance
• Pliers• cutter• stainless steel wire • acrylic
![Page 5: General principle Dr. Ahmed AL-Mayali B.D.S M.Sc. Orth. ahmed.almayali@uokufa.edu.iq](https://reader036.vdocuments.us/reader036/viewer/2022070400/56649e395503460f94b2b640/html5/thumbnails/5.jpg)
Types of pliers •Angle plier•Adam plier
![Page 6: General principle Dr. Ahmed AL-Mayali B.D.S M.Sc. Orth. ahmed.almayali@uokufa.edu.iq](https://reader036.vdocuments.us/reader036/viewer/2022070400/56649e395503460f94b2b640/html5/thumbnails/6.jpg)
Properties of plier
short blade Large comfortable handleTaper of bladeSharp edges of beaksNo roughnessNot rusted
![Page 7: General principle Dr. Ahmed AL-Mayali B.D.S M.Sc. Orth. ahmed.almayali@uokufa.edu.iq](https://reader036.vdocuments.us/reader036/viewer/2022070400/56649e395503460f94b2b640/html5/thumbnails/7.jpg)
stainless steel wire
18-8 s.s wire1-ClassificationsoftHardExtra hard
![Page 8: General principle Dr. Ahmed AL-Mayali B.D.S M.Sc. Orth. ahmed.almayali@uokufa.edu.iq](https://reader036.vdocuments.us/reader036/viewer/2022070400/56649e395503460f94b2b640/html5/thumbnails/8.jpg)
2-Advantage
Does not harm the mouth Does not tarnish Supplied hard or soft Annealed Welded Soldered Once adjusted maintain its displacement Economical
![Page 9: General principle Dr. Ahmed AL-Mayali B.D.S M.Sc. Orth. ahmed.almayali@uokufa.edu.iq](https://reader036.vdocuments.us/reader036/viewer/2022070400/56649e395503460f94b2b640/html5/thumbnails/9.jpg)
3-Physical properties
FatiqueDeflectionFlexibilityRigidity
![Page 10: General principle Dr. Ahmed AL-Mayali B.D.S M.Sc. Orth. ahmed.almayali@uokufa.edu.iq](https://reader036.vdocuments.us/reader036/viewer/2022070400/56649e395503460f94b2b640/html5/thumbnails/10.jpg)
4-Mechanical properties of S.S. wire
• F= D *R4/L3• F force• D deflection• R diameter of wire• L length of wire
![Page 11: General principle Dr. Ahmed AL-Mayali B.D.S M.Sc. Orth. ahmed.almayali@uokufa.edu.iq](https://reader036.vdocuments.us/reader036/viewer/2022070400/56649e395503460f94b2b640/html5/thumbnails/11.jpg)
Tooth movement by removable appliance
TippingRotation less than 90
![Page 12: General principle Dr. Ahmed AL-Mayali B.D.S M.Sc. Orth. ahmed.almayali@uokufa.edu.iq](https://reader036.vdocuments.us/reader036/viewer/2022070400/56649e395503460f94b2b640/html5/thumbnails/12.jpg)
Orthodontic force
LightIntermittentPressure 25-30 g/cm2
![Page 13: General principle Dr. Ahmed AL-Mayali B.D.S M.Sc. Orth. ahmed.almayali@uokufa.edu.iq](https://reader036.vdocuments.us/reader036/viewer/2022070400/56649e395503460f94b2b640/html5/thumbnails/13.jpg)
Types of wire bend
•Soft curve•Right angle bend•Acute bend
![Page 14: General principle Dr. Ahmed AL-Mayali B.D.S M.Sc. Orth. ahmed.almayali@uokufa.edu.iq](https://reader036.vdocuments.us/reader036/viewer/2022070400/56649e395503460f94b2b640/html5/thumbnails/14.jpg)
Art principle of wire bend• Sitting position• Cutting the wire• Wire straight• Non traumatic end• Plier gripping • Area of contact × point of contact• Firm wire gripping• Clean left hand• Marker pen• Avoid notching• Avoid repetition• Don’t go back• Imagination• Follow the anatomy• Parallel to the gum, …….
![Page 15: General principle Dr. Ahmed AL-Mayali B.D.S M.Sc. Orth. ahmed.almayali@uokufa.edu.iq](https://reader036.vdocuments.us/reader036/viewer/2022070400/56649e395503460f94b2b640/html5/thumbnails/15.jpg)