Simultaneous Torquing & Intrusion /certified fixed orthodontic courses by Indian dental academy


Published on

Welcome to Indian Dental Academy
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 has a unique training program & curriculum that provides students with exceptional clinical skills and enabling them to return to their office with high level confidence and start treating patients

State of the art comprehensive training-Faculty of world wide repute &Very affordable.

Published in: Health & Medicine
1 Like
  • Be the first to comment

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

Simultaneous Torquing & Intrusion /certified fixed orthodontic courses by Indian dental academy

  1. 1. Simultaneous Torturing and Intrusion Auxiliary INDIAN DENTAL ACADEMY Leader in continuing dental education
  2. 2. Simultaneous Torquing and Intrusion Auxiliary RAPHAEL L. GREENFIELD, DDS, MSD Intrusion is required throughout retraction to maintain occlusal plane angle and keep roots within cancellous bone for future torquing Patient before and two years after intrusion of incisors to eliminate "gummy" smile. Sectional archwire with auxiliary. B. Intrusion Torquing and intrusion auxiliary, with sectional archwire arch (.018") should be broad enough to avoid completely filling bracket slots impingement of soft tissue. C. Intrusion arch engaged to activate auxiliary.
  3. 3. Use of Class I elastic to prevent labial crown tipping of incisors in Class II, division 1 case. Simultaneous Torquing and Intrusion Auxiliary - . Activation needed to intrude central and lateral incisors (half this amount is needed if only • Helix used instead of tipback bend in Class II, central incisors are engaged). B,C. With activation for intruding all four division 1 case. incisors, arch lies in vestibule. D,E. "V"-bend keeps bite-opening bend of intrusion arch from entering buccal tube as incisors are retracted.
  4. 4. • By using this auxiliary, simultaneous torturing and incisor intrusion is achieved during retraction. • By using light, continuous forces and maintaining the roots within the chancellors bone, root desorption and patient discomfort are minimized. • Treatment time is significantly reduced because the incisors do not require torturing at the completion of retraction.
  5. 5. If canines are not engaged and intrusion arch is tied into incisor roots tend to converge toward midline and spaces open at incisal edges, due to bowing of wire. B. With canines engaged, there is initial undesirable extrusive component on incisors (assuming canines and incisors are initially at same level). • • The torquing spring is especially effective in Class II, division 2 cases where the central incisors are When torquing incisors lingually on a continuous lingually inclined By simultaneously torquing the rectangular archwire, there is 1° of mesial roots as the incisors are intruded, the roots are convergence of the gingival portions of the central kept safely away from the labial cortical plate and and lateral incisor crowns for every 4° of lingual well within cancellous bone. crown torque.1, The same convergence would • In a Class II, division 1 malocclusion, the .018" occur if the intrusion arch were engaged directly intrusion arch and torquing spring maintain into the four incisor brackets). However, this proper root angulation as the anterior segment is effect is eliminated with the torquing and retracted with light Class I forces This produces intrusion auxiliary, because the intrusion arch is bodily distal movement with intrusion instead of connected to the anterior segment by a one-point the usual extrusive component seen with contact. retraction.
  6. 6. Clinical cases A. 12-year-old male Class 11, division 2 patient before treatment. B. Torquing and intrusion auxiliary used for six months. C. After 26 months of treatment. 12-year-old male Class II, division 2 patient before treatment. B. Torquing and intrusion auxiliary used for five months. C. After 26 months of treatment.
  7. 7. Clinical cases of clII DivI A. 11-year-old female Class II, division 1 patient before treatment. B. Torquing and intrusion auxiliary used for eight months. C. After 22 months of treatment. A. 11-year-old female Class II, division 1 patient before treatment. B. Torquing and intrusion auxiliary used for seven months. C. After 28 months of treatment.
  8. 8. Cuspid intrusion after incisor intrusion • A. 12-years-old male Class II, division 1 patient before treatment. B. Torquing and intrusion auxiliary used for five months. C. Cuspid intrusion with .012" nickel titanium overlay wire (three months). D. After 23 months of treatment.But the auxillary should be in place to intrude canines. • True incisor intrusion produces about 5-10mm deep, directly plateau, behind incisors
  9. 9. Torquing individual teeth with intrusion • 11-year-old female patient before treatment. B. • A. 11-year-old female patient with flared upper Torquing auxiliary engaged through vertical incisors before treatment. B. Placement of bracket slot for torquing central incisors auxiliary to intrude incisors without lingual root individually (six months). C. After 18 months of torque. C. After 26 months of treatment. treatment.
  10. 10. Point of force application • Transpalatal arch used to stabilize molars during intrusion • . when the upper incisors are flared labially and no lingual root torque is desired This is achieved by A. Point of force application perpendicular moving the point of force application to center of resistance of incisors produces perpendicular to the center of resistance of the no moment and no torque. B. Point located incisors, thus producing no moment and no torque he point can be located by drawing an imaginary on line bisecting cemento-enamel junctions line that bisects the cemento-enamel junctions on on lingual surfaces of central incisors. C. the lingual surfaces of the central incisors. I Placement of auxiliary and intrusion arch. strongly recommend that a lingual molar stabilizer such as a Nance button or transpalatal arch be used to minimize undesirable side-effects
  11. 11. SELECTIVE INTRUSION • Indiscriminant leveling with a continuous arch or with a sectional wire can produce undesirable side effects. Many times the overbite is corrected not because intrusion has accomplished, but because extrusion and altering the cant of the oculus plane have occurred. If this occurs it is impossible to achieve through intraoral mechanics. • In classic D 2 cases, the central incisors should be intruded using intersegment intrusion ice centrals should be intruded more than the laterals. If continuous wire placed in 4 incisors will level, but erupt laterals & also produce moments which will cause roots to converge medially .So centrals should be intuded,then all 4’s sould be intruded.
  12. 12. Thank you Leader in continuing dental education