Horizontal jaw relations ppt

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Horizontal jaw relations ppt

  1. 1. Preeti Kalia Ist year PG student Department of ProsthodonticsA.E.C.S Maaruti Dental College
  2. 2. DefinitionEccentric relation records Theories of centric relation Techniques Physiologic Other Functional Graphic
  3. 3. GPT 1’ defines centric relation as “The mostretruded relation of the mandible to themaxillae when the condyles are in the mostposterior unstrained position in the glenoidfossae from which lateral movement can bemade, at any given degree of jaw separation.”
  4. 4. GPT 8 is “The maxillomandibular relationship in which thecondyles articulate with the thinnest avascular portion oftheir respective discs with the complex in the anteriorsuperior position against the slopes of the articulareminences. This position is independent of tooth contact.This position is clinically discernible when the mandible isdirected superior and anteriorly. It is restricted to a purelyrotary movement about the transverse horizontal axis”
  5. 5. AnatomicalS. Davies and R. M. J. Gray, What is occlusion? British Dental Journal, Vol 191, No. 5, September 2001
  6. 6. ConceptualS. Davies and R. M. J. Gray, What is occlusion? British Dental Journal, Vol 191, No. 5, September 2001
  7. 7. GeometricalS. Davies and R. M. J. Gray, What is occlusion? British Dental Journal, Vol 191, No. 5, September 2001
  8. 8. Muscle theory
  9. 9. The ligament theory
  10. 10. Osteofibre theory
  11. 11. Meniscus theory
  12. 12. Checkbites Excursive recordings According toJohn.J.Sharry Deglutition Terminal hinge axis
  13. 13. Tactile Physiological Pressureless Pressure NeedlehouseTechniques Functional Patterson Intraoral Graphic Extraoral
  14. 14. Physiological methodIndications Flabby tissue
  15. 15. Physiological methodMaterials usedAluwax Aluwax Aluwax Aluwax
  16. 16. Physiological method Tactile sense or interocclusal record method It involves 2 steps. First a tentative centric jaw relation is recorded using wax occlusal rims. In the second step an interocclusal check record is made using the trial denture during try-in
  17. 17. Physiological methodPressure less method
  18. 18. Physiological methodNick and notch method
  19. 19. Physiological methodPressure method The lower occlusal rim is fabricated to be of excess height occlusal rim is softened in a water bath and inserted carefully into the patient’s mouth patient is guided to close his mouth in centric relation
  20. 20. Staple pin method
  21. 21. Needle house method
  22. 22. Patterson’s technique
  23. 23. Intraoral tracing device
  24. 24. Extaoral tracing device
  25. 25. Extaoral tracing device
  26. 26. Indications Well healed broad edentulous ridges. Adequate interarch space
  27. 27. Contraindications Severely resorbed ridges Excessively flabby ridgesInstability of denture bases Decreased arch space In patients with temporomandibular joint disorders In patients with abnormal jaw relation
  28. 28. Greber 19661) Classical pointed form2) Classical flat form3) Asymmetrical form4) Miniature tracing5) Vertical line protrudes beyond the arrow point
  29. 29.  Swallowing Chin point guidance Chin point guidance with anterior jig Bilateral manipulationMartin E. Kantor, Sidney I. Silverman and Lawrence Garfinkel ,Centric-relationrecording techniques-a comparative investigation,J Prosthet Dent1972:28;6,593-600
  30. 30. Whip mix
  31. 31. Hanau
  32. 32. Hanau
  33. 33. Whip mix Set side shift guide at 45o. 6mm from centric relation along LL. Right condyle is in protrusion.
  34. 34. Hanau
  35. 35.  Unstability of records Resiliency and displaceability of denture bearing tissues Materials used in record making Equipment used in record making Lack of muscle coordination by the patient Use of articulators not adjusting to all introcclusal check records
  36. 36. Ansari.I.H, A one appointment complete denture impression and centric relation recordmethod for compromised complete denture patients, J Prosthet. Dent,December,1997:78;320-323
  37. 37. Ansari.I.H, A one appointment complete denture impression and centric relation recordmethod for compromised complete denture patients, J Prosthet. Dent,December,1997:78;320-323
  38. 38. Bissasu.M, Use of the tongue for recording centric relation for edentulous patients, JProsthet Dent 1999;82:369-70
  39. 39.  Sheldon Winkler,Essentials of Complete Denture Prosthodontics,2nd edition,A.I.B.T.S publishers and distributors, India, pp-183-201 John.J.Sharry, Complete denture prosthodontics, 3rd edition, Mcgraw-Hill book company,USA, pp-215-222 Charles.L.Bolender,Prosthodontic treatment for edentulous patients,12th edition,2003,Mosby publications,St.Louis,pp-268-297 A.O Rahn and C.M Heartwell,Textbook of complete dentures,4th edition,1993,Lea and Fabiger,USA,pp-290-308
  40. 40.  Deepak Nallaswamy,Textbook of Prosthodontics, Ist edition,2003,Jaypee publishers,New Delhi,pp-108-151 A.O Rahn and C.M Heartwell,Textbook of complete dentures,4th edition,1993,Lea and Fabiger,USA,pp-290-308 Granger.E.R. Centric relation, J Prosthet Dent 1953:2;2 pp:160-177 Cohen.R, Hinge axis and its practical application in the determination of centric relation,Jprosthet Dent 1960:20;2 pp:248-257
  41. 41.  Martin E. Kantor, Sidney I. Silverman andLawrence Garfinkel Centric- relation recordingtechniques-a comparative investigation,J ProsthetDent 1972:28;6,59 James Hart long, An instrument for locatingcentric relation ,J Prosthet Dent 1973:30;1,50-52William E. Avant , Using the term “centric”, JProsthet Dent 1971:25;1,pp:12-15
  42. 42.  Lawrence A. Weinberg, Temporomandibular joint function and its on centric relation,J Prosthet Dent 1973:30;2,176-195 Ansari.I.H, A one appointment complete denture impression and centric relation record method for compromised complete denture patients, J Prosthet. Dent,December, 1997:78;320-323 Bissasu.M, Use of the tongue for recording centric relation for edentulous patients, J Prosthet Dent 1999;82:369-70.
  43. 43.  S. Davies and R. M. J. Gray, What is occlusion? British Dental Journal, Vol 191, No. 5, September 2001, Thomas E.J. Shanahan, Physiologic vertical dimension and centric relation ,J Prosthet Dent 2004: 91;3,203-209 13) Yoshiyuki Watanabe,Observation of horizontal mandibular positions in an edentulous patient using a digital gothic arch tracer:A clinical report,J Prosthet Dent 2004 :91;1,15-19
  44. 44. www.doctorspiller.com

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