Articulator Research
-
Upload
mpavanpreetham -
Category
Documents
-
view
28 -
download
1
Transcript of Articulator Research
![Page 1: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/1.jpg)
Articulator research
![Page 2: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/2.jpg)
Articulators
• Articulator research by
• student / Amr Yousef Kamal
• Mansoura faculty of dentistry
![Page 3: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/3.jpg)
Well adjusted occlusal rims united & casts returned to lab casts
mounted on an articulator so that the teeth can be set up
![Page 4: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/4.jpg)
Articulator•reproduces certain recorded relationship-position of the mandible in relation to the maxilla
•mechanical instrument designed to simulate the movements of the mandibular arch in relation to the maxillary arch
![Page 5: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/5.jpg)
CJRCentric jaw relationship
ICP
![Page 6: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/6.jpg)
The jaw relationship in which maximal occlusal contact occurs
The position of the mandibule when the relationship of opposing occlusial surfaces provides for maximum planned contact and intercuspation
Tooth-determined position.
Intercuspal Position ICP
![Page 7: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/7.jpg)
![Page 8: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/8.jpg)
Articulator• reproduces certain recorded
relationship
• simulate certain movements
![Page 9: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/9.jpg)
Mandibular movements (basic)
• Excursions of the mandible in 3 directions– Downward movement-opening of
the mouth(20 mm incisor separation-retruded arc of closure)
– Forward movement-protrusive(20+ & anterior translation of the condyles down the slope of the articular eminence-condylar path)
– Lateral movements –sidewaysworking side-to witch the mandible moves-immediate shide shift &rotation about vertical axisnon working side-condyle moves down and medially, Bennett Angle
![Page 10: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/10.jpg)
ADJUSTABILITY OF AN ARTICULATOR
The capability of the articulator to closely simulate the movements of the mandible (dependent on the adjustability of the
articulator elements)
![Page 11: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/11.jpg)
ELEMENTS OF AN ARTICULATOR
• horizontal axis of rotation: variability of the position of the horizontal axis of rotation in relationship to the maxillary dental cast
• condylar inclination/fossa components:variability of the angle of the eminentia, directional guidance of the superior, posterior and medial walls of the fossa, and ability to simuate laterotrusive movement
![Page 12: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/12.jpg)
ELEMENTS OF AN ARTICULATOR
• intercondylar distance: adjustability of the distance between the vertical axis of rotation
• Benett angle/Benett movement: adjustability of the angle and capability of stimuating sideshift movement
• incisal guidance: adjustability and ability to stimulate the anterior guidance of the natural dentition
![Page 13: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/13.jpg)
NON ADJUSTABLE-SIMPLE HINGE
• opening and closing around a fixed axis (maximum intercuspation is the only position reproduced)
![Page 14: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/14.jpg)
NON ADJUSTABLEClass II: Average value
• capable for lateral movement, some are cabaple of variable location of the horizontal axis of rotation
• all of this type have fixed, arbitrary condylar inclination settings, vertical axes of rotation settings, and Benett angle. No adjustment of these elements is available. Some have a provision for incisal guidance.
![Page 15: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/15.jpg)
NON ADJUSTABLE-AVERAGE VALUE
• condylar angle relative to occlusal plane in average patient: : 34° Condylus sagittalis
• Capable for lateral movement, : 15° Condylus lateralis
• Incisal guidance:10°
No adjustment of movements
![Page 16: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/16.jpg)
Casts mounted in an average position(average values)
Balkwill and Bonwill ▲s
![Page 17: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/17.jpg)
ADJUSTABLE
• SEMI • Fully
![Page 18: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/18.jpg)
ADJUSTABLEClass III: SEMI ADJUSTABLE
• simulate lateral, protrusive and Benett movements to varying degrees
• The amount of adjustability incorporated in the design provides the degree of simulation available.
![Page 19: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/19.jpg)
SEMI ADJUSTABLE ARTICULATOR
• ARCON: condylar elements are on the lower member of the articulator, mechanical fossae are placed on the upper member of the articulator
• NON ARCON: condylar path simulating the glenoid fossae are attached to the lower member, condylar elements are placed on the uper portion of the articulator
![Page 20: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/20.jpg)
FULLY ADJUSTABLE ARTICULATORS (IV.th year-gnathology)
![Page 21: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/21.jpg)
ADJUSTABLECLASS IV: FULLY ADJUSTABLE
• accepts registration of all anatomic determinant of occlusal morphology, and most closely simulates the movement directed by these controls
• the incisal guidance can closely simulate the paths of natural dentition
• With facebow: The function of the facebow is to record the relationship of the maxillary arch to the horizontal axis of rotation of the mandible
• this class is fully utilized in extensive restorative procedures, as well as adjunct to diagnostic determinations of TMJ dysfunction.
![Page 22: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/22.jpg)
FACEBOW instead of B & B ▲s
![Page 23: Articulator Research](https://reader034.fdocuments.us/reader034/viewer/2022051108/544d5e28af7959f7178b4a5a/html5/thumbnails/23.jpg)
Articulator research
• الشهاوي االسم : علي يوسفكمال عمرو
•
• أسنان طب كلية الثانية الدفعة
الصناعية التركيبات لقسم مقدم• / . الدين. سعد الخضري محمد م د أ