A new technique for forced eruption of impacted /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

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A new technique for forced eruption of impacted /certified fixed orthodontic courses by Indian dental academy

  1. 1. A New Technique for ForcedA New Technique for Forced Eruption of Impacted TeethEruption of Impacted Teeth www.indiandentalacademy.comwww.indiandentalacademy.com INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com
  2. 2. Methods for forced eruption ofMethods for forced eruption of impacted teethimpacted teeth • ElasticsElastics • Elastomeric chainElastomeric chain • Cantilever springs are high­ly elastic andCantilever springs are high­ly elastic and exert relatively long-lasting forces, butexert relatively long-lasting forces, but tend to break easily and can betend to break easily and can be uncomfortable for patientsuncomfortable for patients • NITI coil springNITI coil spring • Easy- Way-Coil (EWC) systemEasy- Way-Coil (EWC) system www.indiandentalacademy.comwww.indiandentalacademy.com
  3. 3. Appliance DesignAppliance Design • Remanium* closed-coil stainless steelRemanium* closed-coil stainless steel spring, an .010" ligature wire, and aspring, an .010" ligature wire, and a bondable lingual button (Fig. 1).bondable lingual button (Fig. 1). www.indiandentalacademy.comwww.indiandentalacademy.com
  4. 4. • The spring has an outerThe spring has an outer diameter of .047" and andiameter of .047" and an inner diameter of .030’’inner diameter of .030’’ • Each 1mm activationEach 1mm activation generates an average forcegenerates an average force of .158N or 16.1g.of .158N or 16.1g. • To assemble the system,To assemble the system, cut a 1" length of springcut a 1" length of spring with a ligature cutter. Atwith a ligature cutter. At one end, careful­ly bendone end, careful­ly bend the last few coils of thethe last few coils of the spring at a 45° angle tospring at a 45° angle to make an eyelet about 1mmmake an eyelet about 1mm in length (Fig. 2A). Attachin length (Fig. 2A). Attach the eyelet to the lingualthe eyelet to the lingual button with the .010"button with the .010" ligature wire (Fig. 2B). Afterligature wire (Fig. 2B). After twisting and trimmingtwisting and trimming www.indiandentalacademy.comwww.indiandentalacademy.com
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  7. 7. • The spring should beThe spring should be reactivated at four­weekreactivated at four­week intervals to maintain a constantintervals to maintain a constant force.force. • Additional reactivations areAdditional reactivations are performed until the springperformed until the spring cannot be shortened furthercannot be shortened further (Fig. 5).(Fig. 5). • At this point, the spring can beAt this point, the spring can be replaced with a length ofreplaced with a length of power tube for additionalpower tube for additional eruption (Fig. 6).eruption (Fig. 6). • If nec­essary, the direction ofIf nec­essary, the direction of force can easily be made moreforce can easily be made more mesial or distal by placing amesial or distal by placing a new attach­ment groove in thenew attach­ment groove in the space-holder spring.space-holder spring. www.indiandentalacademy.comwww.indiandentalacademy.com
  8. 8. • After another fourAfter another four weeks, the crown willweeks, the crown will have emerged enoughhave emerged enough to remove the lingualto remove the lingual button and place abutton and place a bracket on the tooth.bracket on the tooth. Further alignment canFurther alignment can be accomplished withbe accomplished with a "piggyback" archa "piggyback" arch seg­ment (Fig. 7).seg­ment (Fig. 7). www.indiandentalacademy.comwww.indiandentalacademy.com
  9. 9. • Unlike springs made of otherUnlike springs made of other materials, such as nickelmaterials, such as nickel titanium, the stainless steeltitanium, the stainless steel spring can be accuratelyspring can be accurately formed into a sturdy eyelet,formed into a sturdy eyelet, with no introduction ofwith no introduction of torque.torque. • 1. High impaction of the1. High impaction of the maxillary left canine, withmaxillary left canine, with the spring force applied in athe spring force applied in a distoi-ncisal direction (Fig.distoi-ncisal direction (Fig. 8).8). www.indiandentalacademy.comwww.indiandentalacademy.com
  10. 10. • 2. Palatal2. Palatal impaction of theimpaction of the maxillary leftmaxillary left canine, with thecanine, with the spring forcespring force applied in aapplied in a distobuccaldistobuccal direction (Fig. 9).direction (Fig. 9). www.indiandentalacademy.comwww.indiandentalacademy.com
  11. 11. • 3. Impaction of the3. Impaction of the mandibular left secondmandibular left second pre­molar, with thepre­molar, with the spring force applied inspring force applied in a mesio­gingivala mesio­gingival direction (Fig. 10).direction (Fig. 10). • The length oftreatmentThe length oftreatment ranged from 13 to 39ranged from 13 to 39 months in the entiremonths in the entire sample, with ansample, with an average of 26.6average of 26.6 months. No infectiousmonths. No infectious reactions in the oralreactions in the oral mucosa weremucosa were observed in any of theobserved in any of the patients, nor was therepatients, nor was there any loosening of theany loosening of the bonded EWC attach­bonded EWC attach­ ment.ment. www.indiandentalacademy.comwww.indiandentalacademy.com
  12. 12. ConclusionConclusion • The EWC system allows the constantThe EWC system allows the constant appli­cation of force throughout theappli­cation of force throughout the eruption of impact­ed teeth. It can beeruption of impact­ed teeth. It can be applied either unilaterally or bilaterally,applied either unilaterally or bilaterally, with secure anchorage and no unde­with secure anchorage and no unde­ sirable side effects. This new technique issirable side effects. This new technique is versa­tile, efficient, inexpensive, and easyversa­tile, efficient, inexpensive, and easy to perform.to perform. www.indiandentalacademy.comwww.indiandentalacademy.com
  13. 13. Thank youThank you For more details please visitFor more details please visit www.indiandentalacademy.comwww.indiandentalacademy.com www.indiandentalacademy.comwww.indiandentalacademy.com