Lasers in orthodontics /certified fixed orthodontic courses by Indian dental academy


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Lasers in orthodontics /certified fixed orthodontic courses by Indian dental academy

  1. 1. LASERS IN ORTHODONTICS INDIAN DENTAL ACADEMY Leader in continuing dental education
  2. 2. ORTHOPHASEROne of the latest commercially available argonlaser welderBigger than the conventional spot welderStrong weld and biocompatibleAll metals including titanium can also be welded.Consist of working microscope with integrated eyeprotection, a flexible hand piece and a compact controlwith pre-programmed parameters
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  4. 4. Laser welding of commercially pure titanium• Used in dentistry for crowns, bridges and partial denture framework.• Highly reactive metal in air• Oxide layer formed on this converts it from an active to a passive state.• At temperatures used for soldering procedures, the thickness of the titanium oxide layer increases thereby debonding from the parent metal.
  5. 5. • Hence conventional soldering not employed.• Laser welding in an argon gas atmosphere is done to join the titanium components• Advantage using this method is that the metal is subjected to very minimal heat influence and hence the welded joint will be composed of same pure titanium as the substrate components
  7. 7. Advantages of laser welding Processes high alloy metals without difficulty can be used in open air Can be transmitted over long distances with a minimal loss of power Narrow heat affected zone Low total thermal input Welds dissimilar metals No filler metals necessary No secondary finishing necessary Extremely accurate Welds high alloy metals without difficulty
  8. 8. Disadvantages of laser welding Rapid cooling rate may cause cracking in certain metals High cost Optical surfaces easily damaged High maintenance cost
  9. 9. Fully Automated Laser Welder Developed specifically for joining orthodontic brackets to their pads, customized weld spot sizesAUTOMATED LASER WELDER ASSEMBLY INTERNAL
  10. 10. Intra Oral Laser Micro welding Leigh & Bevis ( Oct 1978) Source - InternetThe laser micro welder used in this study was ahigh power industrial neodymium laser capable ofdelivering 20 joules/pulse for a maximum of 6milliseconds at a wavelength of 1.06 microns. Afour inch focal length lens was used ,which yieldsan effective spot diameter of .010 to .015 inch
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  13. 13. Rapid and repeatable actions of neodymium laser intra orally is safe and creates no damage to dental tissuesIntra oral micro welding in the placement of spacemaintainers, retainers, orthodontic splint, periodontal splints,archwire brackets to existing bands and auxiliaries It eliminates time consuming procedures like ligature tying of archwire, eliminates the need of painful intra oral soldering, and aids or eliminates the process of crimping and clamping
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  15. 15. EDMUND
  16. 16. Edmund.H.wuerpel a great artist and friend of angle has told………………. “The mind of a child is as tender and as lovely as the petals of a full blown rose.Beware how you touch it!!meet it with all the reverence of your being.Use it with gentle respect and fill it with the honey of love,theperfume of faith and the tenderness of tolerance.Thus shall you fulfill the mission of your life”
  17. 17. THANK YOU INDIAN DENTAL ACADEMYLeader in continuing dental education