INTRODUCTION TO ARTICULATORS
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This document provides information about different types of articulators used in dentistry. It begins with defining an articulator as a mechanical device that holds dental casts in varying positions to simulate jaw movement. It describes the simplest articulators as only accepting interocclusal records, while more sophisticated ones can accept all types of records. The document outlines the components and adjustments of semi-adjustable and fully adjustable articulators. It explains the basic parts of a mean-value articulator and its condylar guidance and incisal guide features. In closing, it defines the horizontal and lateral guidance functions in articulation.
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An articulator is a mechanical device that simulates the temporomandibular joint and jaw movements. It allows dentists to visualize a patient's occlusion outside of the mouth. The primary functions of an articulator are to act as a representative of a patient's jaw movements and simulate the temporomandibular joint. Articulators are classified based on the records used for adjustment, the theories of occlusion they are based on, and their adjustability. Early articulators included simple hinge and barn door designs, while modern articulators can accurately simulate three-dimensional jaw motion.
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INTRODUCTION TO ARTICULATORS
- 1. INTRODUCTION TO ARTICULATORS NAME – RUCHIK C. PATEL ENROLL NO.100420117048 BRANCH :- INSTRUMENTION AND CONTROL SUBJECT :- IBA SEMESTER:- 7th
- 2. Articulator An articulator is a mechanical device used in dentistry to which casts of the maxillary (upper) and mandibular (lower) teeth are fixed, reproducing recorded positions of the mandible in relation to the maxilla. An articulator assists in the fabrication of removable prosthodontic appliances (dentures), fixed prosthodontic restorations (crowns, bridges, inlays and onlays) and orthodontic appliances
- 3. Simplest articulator - can accept only interocclusal records Sophisticated articulator - can accept all types of records
- 4. SEMI ADJUSTABLE A. Have adjustable horizontal condylar paths, adjustable lateral condylar path adjustable incisal guide table and adjustable inter condylar distance. Two Type Arcon Type Non arcon Type
- 5. FULLY ADJUSTABLE A. Capable of being adjusted to follow the mandibular movement in all direction. They donot have a condylar guidance instead they have receptacles. Exp. Stuart Gnathoscope Simulator
- 6. MEAN-VALUE ARTICULATOR Upper member :Triangular frame Vertical Rod with thumb screw. Two Condylar elements
- 7. Incisal guide table :Contain very short cylinder whose upper surface is concave. Vertical Rod should rest on the center of the incisal guide table during articulation.
- 8. Condylar guidance Represent by a slot ( condylar track) Condylar element of upper member passes through this track. A spring is mounted within this track to established the condylar element.
- 9. Vertical Rod or Incisal Pin :Helps to keep a fixed distance between the upper & lower member at anterior end. The pointed tip of vertical rod should rest on the center of incisal guide during articulation.
- 10. BASIC PARTS OF SEMIADJUSTABLE ARTICULATOR Upper member Lower member Mounting plates Condylar analogues Condylar guidance Incisal guide pin Incisal guide table
- 11. Horizontal guidance (anteroposterior) represents the lingual slopes of the upper anterior teeth. Lateral guidance represents the lingual slopes of maxillary cannine/ lingual slopes of buccal cusps of maxillary posterior teeth.