Dental articulators

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Dental articulators

  1. 1. DENTAL ARTICULATORS By Patrick Royson, Doha Al Doujealy 201-ca 2013
  2. 2. Articulator  It is a mechanical instrument that represents the temporomandibular joints and jaw members, to which maxillary and mandibular casts may be attached to simulate some or allmandibular movements. 11/8/2013 d. sirag eddin al-hamadi
  3. 3. Functions  11/8/2013 It allow most of the prosthetic work to be done in the absence of the patient d. sirag eddin al-hamadi
  4. 4. Purpose of articulator • *To hold the maxillary & mandibular cast in a determined fixed relationship. • *To stimulate the jaw movements like opening & closing. • *To produce border movements (extreme lateral & protrusive movements)
  5. 5. Uses of an articulator • *To diagnosis the state of occlusion in both the natural & relationship dentitions. • *To plan dental procedures based on the relationship between opposing natural &artificial teeth .e.g. evaluation of the possibility of balanced occlusion. • *To aid in the fabrication restorations & prosthodontics replacements. • To correct & modify completed restorations. • *To arrange artificial teeth
  6. 6. Classification of articulators • The design of articulators have been based on :• 1-Theories of occlusion Bon will theory • Conical • Spherical • 2-based on the types of inter occlusal record. • 3- based on the ability to stimulate the jaw relation. • 4 based on the adjustability of articulator
  7. 7. Types of articulators  1-Simple hinge articulators.  2-Fixed or mean value condylar path articulators.  3-Adjustable condylar path articulators. a.Semi-adjustable condylar path articulators. b.Fully-adjustable condylar path articulators. 11/8/2013 d. sirag eddin al-hamadi
  8. 8. 1- Simple Hinge Articulators 11/8/2013 d. sirag eddin al-hamadi
  9. 9. Possible movements:  This type of articulators gives only opening and closing movements. 11/8/2013 d. sirag eddin al-hamadi
  10. 10. 2- Mean Value Or Fixed Condylar Path Articulators  Design: 11/8/2013 d. sirag eddin al-hamadi
  11. 11. Possible movements  1-Opening and closing.  2-Protrusive movement at a fixed horizontal condylar path angle. 11/8/2013 d. sirag eddin al-hamadi
  12. 12. 3- Adjustable Condylar Path Articulators 11/8/2013 d. sirag eddin al-hamadi
  13. 13. A- Semi Adjustable Condylar Path Articulators  Design: 11/8/2013 d. sirag eddin al-hamadi
  14. 14. Possible movements  1-Opening and closing.  2-Protrusive movement to an angle recorded from the patient.  3-Lateral movement to an angle calculated from the Hanau’s formula:  L=H/8+12.  Where; L = the lateral condylar path  H = the horizontal condylar path angle which is recorded from the patient. 11/8/2013 d. sirag eddin al-hamadi
  15. 15. B- Fully adjustable articulators  They differ from the semiadjustable articulators in that the lateral condylar path inclinations are adjusted according to records taken from the patient. 11/8/2013 d. sirag eddin al-hamadi
  16. 16. We can watch how a new model articulator works.
  17. 17. How to diagnosis in articulator….

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