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.

1. LASERS IN ORTHODONTICS
INDIAN DENTAL ACADEMY
Leader in continuing dental education
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2. ORTHOPHASER
One of the latest commercially available argon
laser welder
Bigger than the conventional spot welder
Strong weld and biocompatible
All metals including titanium can also be welded.
Consist of working microscope with integrated eye
protection, a flexible hand piece and a compact control
with pre-programmed parameters
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3. ORTHOPHASER
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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.
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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
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6. TITANIUM TITANIUM
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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
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8. Disadvantages of laser welding
 Rapid cooling rate may cause cracking in certain
metals
 High cost
 Optical surfaces easily damaged
 High maintenance cost
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9. Fully Automated Laser Welder
Developed specifically for joining orthodontic brackets to
their pads, customized weld spot sizes
AUTOMATED LASER WELDER
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INTERNAL

10. Intra Oral Laser Micro welding
Leigh & Bevis ( Oct 1978)
Source - Internet
The laser micro welder used in this study was a
high power industrial neodymium laser capable of
delivering 20 joules/pulse for a maximum of 6
milliseconds at a wavelength of 1.06 microns. A
four inch focal length lens was used ,which yields
an effective spot diameter of .010 to .015 inch
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13. Rapid and repeatable actions of neodymium laser intra orally
is safe and creates no damage to dental tissues
Intra oral micro welding in the placement of space
maintainers, 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. EDMUND
WUERPEL
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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,the
perfume of faith and the tenderness of tolerance.Thus
shall you fulfill the mission of your life”
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17. THANK YOU
INDIAN DENTAL ACADEMY
Leader in continuing dental education
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