Retention & relapse (2)
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Retention & relapse (2)
- 7. Retention- -”Holding of teeth in ideal esthetic and functional positions” -- RIEDEL www.indiandentalacademy.comwww.indiandentalacademy.com
- 8. Retention-is the final phase of active orthodontic treatment where teeth are maintained in a healthy, functional, and esthetic position www.indiandentalacademy.comwww.indiandentalacademy.com
- 10. RETENTION General Factors affecting stability Among the many suggested factors mentioned that influence stability, three deserve further elaboration: (i) the involvement of the periodontal ligament fibers and gingival fibers (ii) late mandibular growth and, (iii) physiologic imbalance of local extrinsic forces acting on the corrected dentition. www.indiandentalacademy.comwww.indiandentalacademy.com
- 15. �Rotational relapse might be caused by the elastic fibers of the gingival tissue �Fiberotomy �Life time retention www.indiandentalacademy.comwww.indiandentalacademy.com
- 16. � �collaginous fibers reorganize structurally in 4 to 6 months �supracrestal elastic fibers of the gingiva take up to 1 year to structurally adapt to the new position of the teeth www.indiandentalacademy.comwww.indiandentalacademy.com
- 19. Relapse- is –”The loss of any correction achieved by orthodontic treatment.” www.indiandentalacademy.comwww.indiandentalacademy.com
- 21. physiologic imbalance of local extrinsic forces the “rebound effect” - occlusion - tongue musculature - cheek musculature - gingival fibers - fibers of the PDL www.indiandentalacademy.comwww.indiandentalacademy.com
- 27. Sardar Gurbachan Singh is appearing for his University final examination. He takes his seat in the examination hall, stares at the question paper for five minutes, and then in a fit of inspiration takes his shoes off and throws them out of the window. He then removes his turban and throws it away as well. His shirt, pant, socks and watch follow suit. The invigilator, alarmed, approaches him and asks what is going on. "Oye, I am only following the instructions yaar," he says, " it says here, 'Answer the following questions in brief' www.indiandentalacademy.comwww.indiandentalacademy.com
- 57. INDIANS ON THE MOON www.indiandentalacademy.comwww.indiandentalacademy.com
- 68. Retention planning divided into 3 categories: 1. No retention— A. Corrected crossbites B. Dentition treated by serial extractions C.Treated of partially impacted Lower premolars & upper canines 2. Limited retention- A.class 1 non-extraction cases- -Spacing & proclination B. Class 1 & 11 extraction cases C. Corrected deep bites D, Correction of rotated teeth www.indiandentalacademy.comwww.indiandentalacademy.com
- 69. 3.PERMANENT OR SEMI PERMANENT RETENTION A. Midline Diastemas in adult patients Severe rotations www.indiandentalacademy.comwww.indiandentalacademy.com