Why is it called three point articulator?
In many articulators the Frankfort plane is more popularly being used as the plane of orientation for the facebow records and to mount the maxillary casts in the articulator. This is achieved by using the infraorbital notch from the patient as the third point of reference, for which an alignment pointer was made.
What are the parts of articulator?
The main articulators are the tongue, the upper lip, the lower lip, the upper teeth, the upper gum ridge (alveolar ridge), the hard palate, the velum (soft palate), the uvula (free-hanging end of the soft palate), the pharyngeal wall, and the glottis (space between the vocal cords).
What are the functions of articulator?
An Articulator is a mechanical device used in dentistry to which casts of the maxillary (upper) and mandibular (lower) teeth are fixed and reproduces recorded positions of the mandible in relation to the maxilla.
What is semi adjustable articulator?
A semi-adjustable articulator uses some fixed values based on averages and is not therefore capable of reproducing any particular jaw relationship, or occlusions which are not close to the average.
Which is the best articulator?
21. ADJUSTABLE ARTICULATOR-FULLY • It is the most accurate instrument. It is designed to reproduce the entire character of the mand. border movements, including: immediate and progressive lateral translation, and the curvature and direction of the condylar inclination.
What is Arcon and Non Arcon?
The joint cavity imitating the natural joint fossa is part of the upper frame of the articulator. In other words, the Arcon articulator copies the natural bones of the skull, while the non-Arcon articulator is in reverse, with the condyle moving in the opposite direction (Figures 3 and 4).
What is a non adjustable articulator?
A non-adjustable articulator allows fixation of casts of the maxillary and mandibular teeth, showing recorded positions of the mandible in relation to the maxilla. Non-adjustable articulators only open and close in a fixed horizontal axis, they can simulate lateral and protrusive jaw movement.
What are the two types of articulators?
They can be divided into two types. The passive articulator is the articulator that remains stationary in the production of a speech sound. Often, this is the destination that the active articulator moves towards (i.e the hard palate). Bilabial: Bilabial sounds involve the upper and lower lips.
What is freeway space?
the space between the occluding surfaces of the maxillary and mandibular teeth when the mandible is in physiologic resting position.