Types of torqueing auxiliary
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1. The document describes 10 different types of torqueing auxiliaries used in orthodontic treatment including reciprocal, short four-spur, and individual torqueing auxiliaries. 2. It also discusses various types of uprighting springs including plain, minispring, and short-arm uprighting springs used to upright teeth such as canines and premolars. 3. The document provides details on how each auxiliary and spring is designed and used as well as factors that influence their degree of activation.
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Types of torqueing auxiliary
- 1. TYPES OF TORQUEING AUXILIARY 1. TWO SPUR TORQUEING AUXILIARY 2. FOUR SPUR 3. SIX SPUR 4. RECIPROCAL 5. SHORT FOUR SPUR 6. INDIVIDUAL 7. ONE TO ONE RECIPROCAL 8. LOWER REVERSE 9. RAT - TRAP 10. ASYMMETRICAL www.indiandentalacademy.com
- 2. RECIPROCAL TORQUEING AUXILIARY - Indicated when the upper lateral incisors were blocked out palatally before treatment. Their root apices must be torqued labially to reduce the tendency for the crowns to relapse lingually. - Lever arms on laterals pass incisaly for labial root torque. www.indiandentalacademy.com
- 3. SHORT FOUR – SPUR TORQUEING AUXILIARY Indicated for torqueing of upper anterios. Does not engage cuspid bracket Easy to fabricate. www.indiandentalacademy.com
- 4. INDIVIDUAL TORQUEING AUXILIARY Used for selected upper or lower teeth If placed gingivally, torque the root of the lateral lingually. www.indiandentalacademy.com
- 5. ONE TO ONE TORQUEING AUXILIARY Indicated when two adjacent teeth require root torque in opposite directions. Tends to deliver excessive force therefore degree of activation between lever arms should be low www.indiandentalacademy.com
- 6. REVERSE TORQUEING AUXILIARY Indicated if lower anterior teeth are becoming too proclined. Acts as a source of intra oral mandibular anchorage to inhibit forward movement of mandibular dental arch. www.indiandentalacademy.com
- 7. RAT - TRAP TORQUEING AUXILIARY Main arch wire is formed from 0.020 inch round wire. The auxiliary is wound from either 0.014 or 0.016 inch highly resilient round wire. The torqueing “bars” do not extend to the gingiva. www.indiandentalacademy.com
- 8. ASYMMETRICAL TORQUING AUXILIARY Auxiliary used to produce palatal root torque of the maxillary right central and lateral incisors. The ends of the auxiliary are terminated distal to the canine brackets. As the central incisor loop is formed mesial to the bracket and the lateral incisor loop is formed distal to the bracket mesodistal movement of the auxiliary is prevented. www.indiandentalacademy.com
- 9. 1. Two spur arch 2. Four spur arch 3. Modified four spur 4. Art four – spur 5. Modified Kitchon 2 – spurs 6. Kitchon two finger spur 7. F and J two spur arch 8. Von der heydt two – spur arch 9. Modified reverse torque arch 10. Sain reverse torque arch www.indiandentalacademy.com
- 10. The lingual torquing effect is on account of two factors: 1. Vertical plane changes to horizontal. 2. Smaller circle opens to large. Both these effects force the tips of the spurs to press in a lingual direction against the gingival portion of the crown. Reciprocally, the inter – spur spans of the auxiliary tend to lift away in a labial direction. Thus a force couple is created. The labial forces are resisted by the bracket slots and the base archwire to which auxiliary is tied this accentuates the action of root lingual moving force. www.indiandentalacademy.com
- 11. TYPES OF UPRIGHTING SPRING A combination safety lock pin and uprighting spring that eliminates the need for ligating the arch wire to the bracket. Locked in place by bending the tail of the spring around the body of bracket. Available as two coil and three coil from .014 www.indiandentalacademy.com
- 12. PLAIN UPRIGHTING SPRING Made of 0.014 for uprighting canine and premolars, 0.012 for incisors. The angulation of the active arm and retentive arm is 135 degree. The helix with retentive arm should face the tooth surface. The base arch wire is ligated, otherwise the action of uprighting spring will extrude the tooth . www.indiandentalacademy.com
- 13. -The length of hook is made greater than the diameter of the helix to keep the arm of the spring parallel to the arch wire in the vertical plane. -- To avoid a rotating force on the tooth, the arm of the spring is offset buccally to make it parallel to the arch wire in the horizontal plane. www.indiandentalacademy.com
- 14. The degree of activation of the uprighting springs depends on: 1. The size of wire 2. Diameter of helix 3. Number of turns in the helix 4. Length of the arm of the spring 5. The size of the root being uprighted. www.indiandentalacademy.com
- 15. MINISPRING Made of thinner diameter (0.009) high resilient supreme grade wire. The coil of springs is only twice the size of the wire. The activation is 100%, the stem and active arm are in one line. www.indiandentalacademy.com
- 16. The hooks of short – arm uprighting springs will slide along the arch wire and approach each other as teeth upright. If long arm uprighting springs are used, the arms of premolar and canine cross each other. www.indiandentalacademy.com