articulators about semi adjustable haunau wide view articulators

this presentation is all about semi adjustable articulators

1. articulators

2. contents Parts of Hanau articulators Articulator preparation Mounting procedure Programming Conclusion Reference Definition Classification of articulators Commonly used articulators Hanau articulators

3. DEFINITION Articulator is defined as A mechanical device that simulates the temporomandibular joints and jaw movement, used by dentists and dental technicians to hold models of the patient’s upper and lower teeth in fixed or adjustable positions. It helps in diagnosing occlusion, planning treatment, and fabricating restorations such as crowns, bridges, and dentures." GPT 10 th edition.

4. Classification of articulators ARCON TYPE NON ARCON TYPE

5. Non-adjustable articulator Salient Features: Can open and close in a fixed horizontal axis. Have a fixed condylar path. The incisal pins ride on an inclined plate in a fixed inclination. Can accept one or two of the following records: Face bow, centric jaw relation or protrusive record. Example; Class I articulator

6. Semi-adjustable articulator The semi-adjustable articulator has adjustable condylar and incisal guides and is capable of accepting a facebow record. The condylar guides are programmed from protrusive and lateral records obtained from the patient. Salient Features:

7. Have adjustable; Horizontal condylar paths, Adjustable lateral condylar path, Adjustable incisal guide table, Adjustable inter condylar distance. Can accept all three of the following records: Face bow centric jaw relation or protrusive record.

8. A class II or III articulator is a semi adjustable articulator. Two Types:- Arcon Type Non arcon Type

9. ARCON TYPE The term " Arcon " was derived by Bergstrom from the words Ar - Ar ticulator & Con - Con dyle This articulator resembles the TMJ. The Condylar Element / analogue / sphere attached to - Lower Member (Movable) The Condylar Guidance (Glenoid Fossa) attached to - Upper /Cranial Member (immovable)

10. Advantage The Face Bow transfer, occlusal plane, and relationship of the opposing casts are preserved when the articulator is opened and closed. Examples Whip mix, 8500 (DR. Charles Stuart, 1963) Hanau Arcon

11. non arcon type This articulator is the reverse of the TMJ The Condylar Element / analogue / sphere attached to -Upper Member (Movable) The Condylar Guidance (Glenoid Fossa) à attached to -Lower Member (immovable) Examples ; Hanau, 96h20 Hanau, Kinoscope

12. FULLY ADJUSTABLE ARTICULATOR Capable of being adjusted to follow the mandibular movement in all direction. They have numerous adjustable readings which can be customized for each patient. They do not have a condylar guidance instead they have receptacles, in which acrylic dough can be contoured to form a customized condylar & incisal guidance. Salient Features :

13. Uses. In gnathologic studies , occlusal rehabilitation is done through selective grinding or full mouth restorations. The articulator is customized by adjusting the condylar path and incisal guidance, often using acrylic resin. Patient jaw movements are recorded using stereographic or pantographic methods.

14. following 5 records can be used; Face bow, Centric jaw relation, Protrusive, Lateral records, Intercondylar distance record.

15. COMMONLY USED ARTICULATORS Mean-Value Articulator Hanau wide VUE articulator Whip-mix articulator Denar articulator Panadent articulator TMJ articulator

16. In this presentation I will be highlighting about semi-adjustable Hanau wide vue articulator.

17. HANAU ARTICULATORS Hanau-brand articulators were first introduced to the dental profession in 1921 by Rudolph Hanau . The articulator was designated the Model H. Originally designed for complete dentures with the assistance of Drs. E. J. Farmer, Felix A French, Robert Gillis, Victor Sears, R. O.Schlosser

18. HANAU WIDE VUE (Model 183 and 184) These are Arcon in nature and have similar features. The only difference is that the upper and the lower members can be separated in model 184 due to open condylar track.

19. The design results in most openness among all the hanau models. The Horizontal condylar guidance is adjustable from - 20° to +60° for protrusive angles. The Bennett side shift is adjustable from 0° to 30° for bennett angles.

20. Major Components of the Hanau Wide-Vue Articulator Region Upper Member (Maxilla) Lower Member (Mandible) Anterior Provision for incisal rod, orbitale indicator Incisal guide table Posterior Condylar Guidance Assemblies and Lateral condylar guidance Condylar elements

21. PARTS OF HANAUT™ WIDE VUE II ARTICULATOR

22. CONDYLAR GUIDANCE Figure 2: The Condylar Guidance are the control centers of the Articulator and they adjustably assimilate the multiple function of the glenoid fossa.

23. HORIZONTAL CONDYLAR GUIDANCE The Condylar Track may be adjustably inclined on the horizontal transverse axis from a “zero” to a plus 60 degree or to a minus 20 degree These inclinations are termed the protrusive inclination and simulate the patient’s superior wall of the fossa .

24. The Condylar Track may also be adjusted on the vertical axis from a “zero” sagittal to 30˚. This angle is termed the progressive Bennett angle and corresponds to the medial wall of the patient’s fossa. LATERAL CONDYLAR GUIDANCE

25. CONDYLAR TRACK Closed condylar guidance track rotates in a enclosed housing which stops the condylar element, preventing the accidental disengagement of the upper member.

26. Open condylar guidance track Open condylar guidance has a condyle retainer which controls the end of the condylar track. Pushing the retainer inward will release a retention ball, fully opening the track and allowing rapid removal of upper member. Pushing it outward will reengage the retention ball and block the track, preventing its accidental removal.

27. CENTRIC LOCK This is to limit the anterior movement of the condylar element. Engagement of the centric lock depresses a centric pin, causing it to arrest the condylar element at the centric position, the point from where the protrusive and Bennett angles emanate .

28. When locked the upper member is restricted to an opening and closing movement only. Releasing the centric lock two full turns will disengage the centric pin and return the elements freedom of movement on the condylar track.

29. CONDYLAR SHAFTS Condylar shafts adjustably slide in the wings of the lower member. They have been factory fixed by set screws and hold the condylar elements.

30. RESILIENT BUMPER This will protectively stop the upper member and rest against the wings of the lower member when fully opening the articulator.

31. DUAL END INCISAL PIN -SPHERICAL & CHISEL The incisal pin serves as a forward control of the articulator. It maintains a vertical stop and provides a stylus contact for excursive movements. Midline groove about 1 inch from the spherical tip. Five additional lines in mm on each side for altering the VD.

32. Two annular grooves on the Incisal Pin at 37 ( Bonwill's theory) and 54 mm below the Frankfort Horizontal Plane. Arbitrary vertical landmarks alignment of the incisal edge of the maxillary centrals when making a Facebow transfer. Third point of stability

33. Midline groove is aligned with top edge of the upper member. It is secured by thumbscrew against the flattened side of the pin.

34. ADJUSTABLE INCISAL GUIDE This provides an independent adjustment of anterior guidance. The incisal guide can rotate antero-posteriorly from a horizontal 0° to a 60° positive inclination of protrusion which is then secured by a small locknut.

35. The central guiding table is 5.56mm wide and forms the inclined surface for the protrusive guidance of the incisal pin. Separately adjustable lateral wings elevate by thumbscrews from 0° horizontal to 45° inclined.

36. ORBITAL INDICATOR Represents the patient's infra- orbitale notch. Anterior reference landmark of the Frankfort Horizontal Plane. When used with an orbitale pointer on a facebow, it provides an anatomical vertical orientation for upper arch.

37. Mounting plates To attach upper and lower casts to upper and lower members of articulator. Has elongated luting slots - for a secure adherence of gypsum mounting. Center domed brass insert which is internally threaded for attachment to upper and lower members.

38. ARTICULATOR PREPARATION Adjust the protrusive inclination of both Condylar Guidance to 30 degrees and tighten the Thumbnuts. Adjust the Bennett Angles of both Condylar Guidance at 30 degrees and tighten their thumbnuts. Adjust the Incisal Pin to align the mid-line calibration to the top edge of the Upper Member.

39. Adjust the Incisal Guide to a "zero degree and tighten the small Locknut. Slide the Platform to align the Incisal Pin contact over the "zero" indicating line on Guidance and tighten Platform Lockscrew

40. Mounting procedure Maxillary cast is attached to the articulator using the orientation jaw relation record. Procedure of transferring the orientation jaw relation to the articulator is called face-bow transfer.

41. Ear piece is attached to the roll pin of the articulator. Transfers the posterior reference point of the face-bow to the articulator. Anterior reference point - positioned by making the orbital indicator contact the orbital pointer of the face-bow. A pivot stand attached to the lower member helps to prevent vertical displacement of the occlusal rim during articulation.

42. Centric lock is engaged. Later tentative jaw relations is carried out according which the mandibular cast with occlusal rim is articulated. Then tracers are attached such that central bearing plate to lower and central bearing pointer to upper rim and tracings was carried out

43. And also centric and protrusive records are made. Now mandibular cast Is de-articulated. Now by placing the centric interocclusal ,records on mandibular rim, again mandibular cast is articulated in exact centric relation with the maxilla.

44. programming the articulator Before teeth can be arranged, the articulator must be programmed or customized to the individual patient. The programmed articulator is vital to plan an occlusion which is both efficient and at the same time reduces stresses transmitted to the underlying tissues and temporomandibular joints

45. PROGRAMMING THE CONDYLAR GUIDANCES HORIZONTAL CONDYLAR GUIDANCE OR INCLINATION USING PROTRUSSIVE INTEROCCLUSAL CHECK RECORDS

46. A protrusive inter occlusal record (ask the patient to protrude the mandible around 6mm) is made by using bite registration material. The condylar lock nuts on articulator are loosened and the occlusal rims with record is placed on the articulator.

47. The condylar inclinations are adjusted until the upper and lower occlusal rim seat firmly and evenly in the protrusive record. The degree of inclination is noted and recorded on the mounting plaster. The condylar inclination lock nuts are then secured.

48. LATERAL CONDYLAR GUIDANCE INCLINATION Using lateral interocclusal records or by Using Hanau's formula; L=H/8+12.

49. ARRANGEMENT OF ANTERIOR TEETH The six upper and six lower teeth are set up in the arrangement dictated by the patient’s esthetic and phonetic requirements.

50. INCISAL GUIDE PREPARATION Figure 23. Lock the Articulator into centric. The occlusal rims are then seated onto their casts at the established vertical and centric relation. Lower the Incisal Pin into contact with the “zero” horizontal Incisal Guide, the chisel end of the Pin resting crosswise on the center table and lock in position by the Thumbscrew.

51. Verify or correct at this time, the alignment of the Incisal Pin chisel end with the “zero” indicating line on the Lateral Wings. Slightly loosen the small Locknut for protrusion and disengage the Centric Locks.

52. ADJUSTMENT OF INCISAL GUIDE Gently guide the upper cast into a straight protrusion. The lingual edges of the upper central incisors are brought into contact with the incisal edges of the lower incisors,

53. Figure 24 . The Incisal Guide is then rotated antero posteriorly to make contact with the Incisal Pin, tightening the small Locknut to maintain the angulation. Figure 25 . The Lateral Wing is then elevated to contact the corner of the Incisal Pin and the Locknut is tightened to maintain this adjustment.

54. ARRANGEMENT OF POSTERIOR TEETH The teeth are set in centric occlusion and checked for proper contacts during all excursive movements, ensuring the incisal pin remains in contact. The wax rims are tried in for esthetics and function, then articulation is finalized with gingival and palatal waxing. Finally, the rims are reseated and sealed on the master casts to prevent leakage during flasking .

55. Conclusion The Hanau Wide-Vue Articulator is a semi-adjustable articulator designed to replicate mandibular movements with clinical accuracy. Its key features—like the dual-end incisal pin, adjustable condylar elements, and stable mounting system—make it suitable for complex procedures such as full-mouth rehabilitation. It provides a balance between ease of use and precision, making it a valuable tool for both prosthodontic education and clinical practice.

56. reference Whip Mix Corporation. Hanau™ Wide-Vue Articulator Instructions for Use. Document ID: 339602-F-AG-R1020, Published October 2020. The Glossary of Prosthodontic Terms 9th Edition, Journal of Prosthetic Dentistry, 2017. Manappallil , D. N. (2017). Textbook of Prosthodontics (3rd ed.). New Delhi: Jaypee Brothers Medical Publishers. Nallaswamy , D. (2017). Textbook of Prosthodontics (2nd ed.). New Delhi: Jaypee Brothers Medical Publishers.

57. Thank you