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Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy
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Removable orthodontic appliances /certified fixed orthodontic courses by Indian dental academy

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The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.

Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078

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  • 1. REMOVABLE ORTHODONTIC APPLIANCES INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  • 2. CONTENTS • BOWS • ELASTICS • SCREWS • BASEPLATE • SUMMARY & CONCLUSION www.indiandentalacademy.com
  • 3. BOWS Bow is that component of removable appliance which helps in retracting and retaining the teeth and also contributes for the retention of the appliance. www.indiandentalacademy.com
  • 4. USES • retraction of anterior teeth. retention of teeth, after active orthodontic treatment is completed. • • attachment of auxiliary springs. • for carrying soldered attachments. www.indiandentalacademy.com
  • 5. TYPES OF BOWS SHORT LABIAL BOW Most commonly employed labial bow. Construction: Wire used for construction- 0.6mm for retraction and 0.7mm for retention. Bow adapts labial surface of the incisors at about the junction of middle and www.indiandentalacademy.com incisal thirds of the teeth.
  • 6. www.indiandentalacademy.com
  • 7. U-loops are formed above gingival margins and should be short of sulcus to prevent irritation of soft tissues. Contraindication In case of severe proclination of incisors. Activation By closing the U-loops. www.indiandentalacademy.com
  • 8. Advantages • fabricated easily • for retention • hooks can be soldered • offset bends can be made for minor movements of individual teeth. www.indiandentalacademy.com
  • 9. LONG LABIAL BOW Construction Wire used for construction –0.6mm for retraction and 0.7mm for retention. Activation- by closing the U-loops Uses • to close space between canine and premolar. • used for retention. www.indiandentalacademy.com
  • 10. www.indiandentalacademy.com
  • 11. SPLIT LABIAL BOW 0.6mm wire is used for construction The bow is split to increase the flexibility of the bow Suitable for incisor retraction Adjusted at U-loops www.indiandentalacademy.com
  • 12. www.indiandentalacademy.com
  • 13. ROBERTS’ RETRACTOR 0.5mm wire inserted into SS tube/sleeve to give support at the either end of the bow A coil is placed at the point of emergence of the wire from the tubing Tubing emerges from the base plate distal to the canine www.indiandentalacademy.com
  • 14. www.indiandentalacademy.com
  • 15. Flexibility lies in the vertical limbs Activation- by bending in the vertical limb below the coil.Once the incisors are retracted the horizontal arm should be re adapted. Advantages used for correction of severe • protrusions • light force is applied as thinner wire www.indiandentalacademy.com is used & has longer range of action.
  • 16. HIGH LABIAL BOW WITH APRON SPRING O.9mm wire extending into buccal sulcus. The impression must be muscle trimmed so that the frenae can be avoided. The apron spring is made of 0.35-0.4mm wire which is attached to the base of the arch by wrapping a few turns round the vertical step. www.indiandentalacademy.com
  • 17. www.indiandentalacademy.com
  • 18. Care should be taken not to twist the wire to prevent incorporation of stress Activation- spring is bent towards the teeth Advantages used for correction of severe • protrusions • light force is applied as thinner wire is used & has longer range of action. www.indiandentalacademy.com
  • 19. LABIAL BOW WITH SELF STRAIGHTENING WIRES Increased flexibility (0.4mm wire) Used to reduce an over jet Individual tooth movements cannot be undertaken Adjustment is made by closing the Uloops of the bow and self straightening wires should run freely on the supporting bow www.indiandentalacademy.com
  • 20. www.indiandentalacademy.com
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  • 22. LABIAL BOW WITH REVERSE LOOPS 0.7mm wire is used for fabrication. Should be well clear of clasps on first molars. Reverse loops help in preventing the buccal drift of canines during retraction of anterior teeth. www.indiandentalacademy.com
  • 23. www.indiandentalacademy.com
  • 24. ActivationFirst the vertical loop is opened by compressing the loop, later compensating bends are placed at the base of the loop Flexibility can be improved by incorporating the self straightening wires or by splitting it. www.indiandentalacademy.com
  • 25. EXTENDED LABIAL BOW 0.7mm wire is used. Flexibility is increased because of enlarged loops. Useful alternative to Roberts’ retractor Less comfortable for the patient to wear due to size of the loops. www.indiandentalacademy.com
  • 26. www.indiandentalacademy.com
  • 27. FITTED LABAIL BOW 0.7mm wire is used for construction Similar to short labial bow except that horizontal part is closely adapted on to the labial surfaces. Used for retention www.indiandentalacademy.com
  • 28. www.indiandentalacademy.com
  • 29. BEGG RETENTION BOW 0.9mm wire is used for fabrication. Serves the purpose of the both the active and retentive components. Avoids the need for a molar clasp by using a continuous bow with adjustment loops which emerges distal to the upper molars. Allows the settling of the occlusion. www.indiandentalacademy.com
  • 30. www.indiandentalacademy.com
  • 31. ELASTICS Used as a convenient means for applying pressure Occasionally used as the intra oral active component of a removable appliance, usually to retract upper or lower incisors. Latex elastics are used for intra oral use. www.indiandentalacademy.com
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  • 33. www.indiandentalacademy.com
  • 34. Available in various sizes (1/8 inch-5/16 inch) and selected based on the amount of loading. Patient is advised to renew the elastics every few days. They have the advantage of being inconspicuous and comfortable but they tend to ride upon the crown of the tooth causing gingival damage. www.indiandentalacademy.com
  • 35. SCREWS Active component of a removable appliance. Used to bring about the expansion of either dental arches and/or skeletal bases as required. Combine strength with limitation of force within physiological limits when properly handled. www.indiandentalacademy.com
  • 36. DESCRIPTION OF A SCREW Consists of a central oblong body which is divided into two parts. Each half is tapped centrally to receive one end of a double ended screw. Holes are drilled transversely through the centre boss of the screw for the insertion of a key. www.indiandentalacademy.com
  • 37. www.indiandentalacademy.com
  • 38. There are four of these holes, so that screw is turned ¼ revolution at each adjustment. One end of the screw has a left hand thread thus turning of the screw withdraws it from both sides simultaneously. Near the side of each half is a guiding pin parallel to the central screw. www.indiandentalacademy.com
  • 39. Each guide pin is received into a hole drilled on the opposing half. The surface of the body is suitably serrated to obtain fixation in the plastic base material. www.indiandentalacademy.com
  • 40. PITCH OF THE SCREW The distance moved by the screw on being turned. To avoid damage to the attachment of the tooth the pitch of the screw is limited. The width of the periodontal membrane is 0.15-0.25mm. screw is designed to open this amount of thickness on each adjustment(I.e,1/4 turn). www.indiandentalacademy.com
  • 41. Removable appliances incorporating screws are divided into 3 types: A)Expansion appliance with screw incorporating reciprocal anchorage. B) Appliance with screw to move individual teeth or small groups of teeth in a buccal or a labial direction. C) Appliance with screw to move individual or small groups of teeth in a distal or mesial direction. www.indiandentalacademy.com
  • 42. EXPANSION APPLIANCE WITH SCREW Used to increase the width of dental arch providing the narrowness is due to palatal or lingual inclination of the bicuspids and molars. Simplest form of this appliance is made of 2 modified arrow head clasps and a plastic base divided in the middle, two halves being united by a screw. www.indiandentalacademy.com
  • 43. www.indiandentalacademy.com
  • 44. In the upper arch the screw is placed in the mid-line with its axis set transversely. In the lower arch, the screw is placed in the mid-line lingual to the alveolar process of the incisor teeth. The expansion plate is sometimes used when there is a cross bite, in such cases it is necessary to disengage the upper and lower teeth. www.indiandentalacademy.com
  • 45. www.indiandentalacademy.com
  • 46. APPLIANCE WITH SCREW TO MOVE INDIVIDUAL TEETH OR SMALL GROUP OF TEETH BUCCALLY OR LABIALLY The narrow ness of upper arch is not always symmetrical, the lingual inclination may be confined to teeth on one side only. www.indiandentalacademy.com
  • 47. Appliance with screw to move one or two molars buccally: www.indiandentalacademy.com
  • 48. Appliance with screw to move premolars buccally: www.indiandentalacademy.com
  • 49. Appliance with screw to move upper incisors labially: www.indiandentalacademy.com
  • 50. APPLIANCE WITH SCREW TO MOVE INDIVIDUAL TEETH OR SMALL GROUP OF TEETH IN A DISTAL OR MESIAL DIRECTION The anchorage should be reinforced by means of an inclined plane and a labial bow. Only one side of the arch should receive treatment at any one time www.indiandentalacademy.com
  • 51. www.indiandentalacademy.com
  • 52. The axis of the screw should be parallel to the occlusal plane. Where premolar or molar are to be moved distally the screw should be placed mesially to the tooth to be moved. www.indiandentalacademy.com
  • 53. BASE PLATE: Constitutes the body of the removable appliance. Provides A)Foundation which supports other components. B) Contributes to anchorage. C) May be built into a bite plane to disengage occlusion or reduce overbite. www.indiandentalacademy.com
  • 54. Baseplate act as supports for pressure sources and distribute the reaction of these forces to the anchorage areas. DESIGN AND CONSTRUCTION The baseplate needs to be thick enough. Ideally, this should be about as thick as a sheet of modelling wax. Should cover most of hard palate, finishing just distal to the first molars. www.indiandentalacademy.com
  • 55. The baseplate should fit closely around the necks of teeth that are not being moved– otherwise food packing and gingival hyperplasia may occur. Baseplates are generally manufactured from cold-cured acrylic. www.indiandentalacademy.com
  • 56. BITE PLANES Acrylic of the base plate may be thickened anteriorly or posteriorly to form the bite plane. ANTERIOR BITE PLANE: Mainly used for reduction of over bite. This is mostly successful in in an actively growing patient. www.indiandentalacademy.com
  • 57. www.indiandentalacademy.com
  • 58. When designing the anterior bite plane the over jet and the desired height of the bite plane relative to the palate and the palatal surface of the upper incisors should be taken into consideration. Bite planes should be made with the occlusal surface parallel to occlusal plane. The initial bite plane in adults should be very thin. www.indiandentalacademy.com
  • 59. POSTERIOR BITE PLANE: Used to eliminate lateral or anterior displacement of the mandible. Will also assist in the correction of buccal or an anterior cross bite. Should be thinner posteriorly than anteriorly. Should contact the opposing teeth on both sides of the mouth. www.indiandentalacademy.com
  • 60. Difficult to construct accurately unless the models have been set up on an articulator. www.indiandentalacademy.com
  • 61. SUMMARY AND CONCLUSION: Removable appliances, by definition, are those that can be inserted and removed by the patient. These appliances generally use acrylic base plates and SS wires. Can be used in combination with fixed appliances. www.indiandentalacademy.com
  • 62. They are used universally as retention appliances. Also serve as anchorage. Used to correct minor tooth movements. www.indiandentalacademy.com
  • 63. Removable appliances have ACTIVE COMPONENT PASSIVE COMPONENT BASE PLATE www.indiandentalacademy.com
  • 64. CONCLUSION: Although there are many treatment modalities like the use of fixed and functional appliances which have restricted the use of removable appliances, they still are an essential part of any orthodontic treatment either during or after the active treatment. www.indiandentalacademy.com
  • 65. BIBILOGRAPHY: THE DESIGN CONSTRUCTION AND USE OF REMOVABLE ORTHODONTIC APPLIANCES– C.PHILIP ADAMS & W. JOHN S. KERR REMOVABLE ORTHODONTIC APPLIANCES– K.G.ISAACSON, J.D.MUIR & R.T.REED CONTEMPORARY ORTHODONTICS– WILLIAM R.PROFITT with HENRY W. FIELDS, Jr. REMOVABLE ORTHODONTIC APPLIANCES– T.M.GRABER & B.NEUMANN ORTHODONTICS FOR DENTAL STUDENTS– T.C.WHITE, J.H.GARDINER & B.C.LEIGHTON www.indiandentalacademy.com
  • 66. ORTHODONTIC PRINCIPLES AND PRACTICE— T.M.GRABER ORTHODONTIC CONCEPT FOR GENERAL PRACTICE– SPIRO.J.CHACONAS TEXTBOOK OF ORTHODONTICS– TULLEY & HOUSTON www.indiandentalacademy.com
  • 67. THANK YOU www.indiandentalacademy.com

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