Comparative biomechanics in orthodontics /certified fixed orthodontic courses by Indian dental academy
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Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a widea 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 range of dental certified courses in different formats.
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Comparative biomechanics in orthodontics /certified fixed orthodontic courses by Indian dental academy
- 1. COMPARATIVE BIOMECHANICS IN ORTHODONTICS INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
- 2. Why is it so different ?? Relation of Point of force application Centre of Resistance www.indiandentalacademy.com
- 7. Compative Biomechanics Alignment Leveling and Space Closure Finishing www.indiandentalacademy.com
- 8. Compative Biomechanics Alignment Leveling and Space Closure Finishing www.indiandentalacademy.com
- 9. Leveling and Alignment Intrusion – Teeth with Normal inclination www.indiandentalacademy.com
- 10. Leveling and Alignment Intrusion – Proclined Teeth www.indiandentalacademy.com
- 11. Leveling and Alignment Intrusion – Retroclined/Upright Teeth www.indiandentalacademy.com
- 12. Leveling and Alignment Lower arch - Similar effect - Re-enforcement of Anchorage www.indiandentalacademy.com
- 13. Leveling and Alignment Leveling of lower arch www.indiandentalacademy.com
- 14. Leveling and Alignment Leveling of lower arch www.indiandentalacademy.com
- 15. Leveling and Alignment Effect of Reverse Curve Mushroom Archwire on Lower Incisors in Adult Patients: A Prospective Study Ryoon-Ki Hong, Hun-Pyo Hong, Hee-Sook Koh (Angle Orthod 2001;71:425–432.) www.indiandentalacademy.com
- 18. Leveling and Alignment Rotation Control Difficult to Engage Wire Lower Magnitude of Moment www.indiandentalacademy.com
- 20. Leveling and Alignment Rotation Control 1. 2. 3. 4. 5. 6. 7. Tight ligation, double over tie – resilient wire –CuNiTi Looped wire / offsets Reciprocal rotation with power chain Correct one at a time Power chain to anchor unit or archwire hook Smith’s rotation tie Half rotation tie to buccal composite button www.indiandentalacademy.com
- 21. Leveling and Alignment Smith’s rotation Tie Looped Archwire www.indiandentalacademy.com
- 22. Bite Plane Effect Especially seen with brackets with bite plane Kurz-Ormco 7th Generation www.indiandentalacademy.com
- 23. Bite Plane Effect Helps in bite opening Intrusive force on incisors Posterior eruption Depends on inclination Control in High angle www.indiandentalacademy.com
- 24. Bite Plane Effect Upto 2mm opening and 3 incisors contact – Acceptable More opening and < 3 incisor contact Periodontal trauma Discomfort Composite build-ups www.indiandentalacademy.com
- 25. Bite Plane Effect Composite Build-ups www.indiandentalacademy.com
- 26. Bite Plane Effect Incisors may not occlude with bite planes Increased Overjet / Reverse overjet www.indiandentalacademy.com
- 27. Bite Plane Effect Loss of Anchorage 1. 2. Space closure in Excessive/Reverse overjet Disocclusion Loss of inter-cuspation Easier tipping – Mesio-distal / Bucco-lingual Extrusion www.indiandentalacademy.com
- 28. Compative Biomechanics Alignment Leveling and Space Closure Finishing www.indiandentalacademy.com
- 29. Space Closure Intrusion and retraction www.indiandentalacademy.com
- 30. Space Closure Intrusion and retraction www.indiandentalacademy.com
- 31. Space Closure Anchorage Considerations 1. Adult patients 1. 2. 3. 4. 2. 3. 4. 5. Non growing Reduced PDL Support Mutilated occlusion Restriction in use of HG/ Lip bumper etc Bite plane effect – Disclusion(??) Tongue kept away from teeth Higher in lower arch – uprighting effect of leveling Cortical anchorage www.indiandentalacademy.com
- 32. Space Closure Cortical Anchorage - Takemoto www.indiandentalacademy.com
- 33. Space Closure – Effects Bowing Vertical Bowing (Rollercoaster effect) •Highly placed canines •Distally tipped canines •Rapid space closure (esp on resilient wires) www.indiandentalacademy.com
- 34. Space Closure – Effects Bowing Transverse Bowing www.indiandentalacademy.com
- 35. Space Closure – Effects Bowing Transverse Bowing - Prevention www.indiandentalacademy.com
- 36. Space Closure – Effects Bowing Transverse Bowing - Prevention www.indiandentalacademy.com
- 37. Compative Biomechanics Alignment Leveling and Space Closure Finishing www.indiandentalacademy.com
- 38. Finishing 1. Tooth related problems 2. Mechanical difficulties www.indiandentalacademy.com
- 39. Finishing – Tooth Related Problems Adult patients Abraded teeth Missing teeth Very demanding Lingual Poorly finished Bulky crowns Lingual restorations anatomy Variations Difficult to vary bracket height www.indiandentalacademy.com
- 40. Finishing – Mechanical considerations Point of force application away from buccal surface Reduced inter-bracket distance Difficult to place bends Difficult to engage wire Difficulty in rotation correction Short Inter-bracket Span www.indiandentalacademy.com
- 41. Finishing – Mechanical considerations Longer time to express bracket prescriptions Wire changes and activations after 6-8 weeks Appliance to be left in position for additional 3 months after achieving correction www.indiandentalacademy.com
- 42. Better Finishing Accurate diagnosis and Treatment planning Accurate bracket placement – lab procedures Prevent problems Light forces Prevent bowing Proper alignment & complete expression of torque www.indiandentalacademy.com
- 43. REMEMBER More Sensitive on lingual side More demanding patient Wires become more rigid… so watch for side effects Lingual appliance tips teeth lingually Anchorage – Extraction decision Loss of Torque www.indiandentalacademy.com
- 45. www.indiandentalacademy.com Leader in continuing dental education www.indiandentalacademy.com