Impression in orthodontics /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
0091-9248678078

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

  1. 1. IMPRESSION IN ORTHODONTICS www.indiandentalacademy.com INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com
  2. 2. Impressions are negative replicas Impressions should fully extend so that not only the crown position & Inclination but also the contour of the supporting alveolar bone can be seen clearly. www.indiandentalacademy.com
  3. 3. Tray selected should include all erupted molars 3mm clearance between teeth & tray Impression material used- Alginate(common), Rubber based impression material Patient is seated upright & mandibular impression made 1st preferably www.indiandentalacademy.com
  4. 4. Impression for functional appliance differs by 2 important ways Areas where appliance components will contact soft tissues must be clearly delineated. Most appliances use contact with lingual mucosa to stimulate forward posturing, so usually this is the critical area. The impression must include the alveolar process bellow the lower molars if long lingual flanges are to be employed. The impression must not stretch & excessively display soft tissue in an area of contact with the appliance. This is critical when lip pads & buccal shields are planned. Too much extension of the impression will result in pads & shields that are too long & will cause soft tissue irritation & ulceration when the appliance is worn. www.indiandentalacademy.com
  5. 5. Impression trays High flange orthodontic trays www.indiandentalacademy.com
  6. 6. Chair Side Custom Impression Tray Non-gothic arch www.indiandentalacademy.com
  7. 7. Teeth covered with base plate wax www.indiandentalacademy.com
  8. 8. Putty molded over wax www.indiandentalacademy.com
  9. 9. Wire reinforcing the frame & handle www.indiandentalacademy.com
  10. 10. Low viscosity material used for detailed impression www.indiandentalacademy.com
  11. 11. Impression making in minimum mouth opening Lingual flange is cut www.indiandentalacademy.com
  12. 12. Sharp edges smoothened by acrylic and polished www.indiandentalacademy.com
  13. 13. Lower impression complete www.indiandentalacademy.com
  14. 14. Disinfecting the impression Rinse well with cold tap water Spray 2.2% glutaraldehyde Place in air tight bag for 10 minutes Remove & rinse again Pour immediately www.indiandentalacademy.com
  15. 15. THANK UFor more details please visit www.indiandentalacademy.com www.indiandentalacademy.com

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