INTRODUCTION TO ARTICULATORS

NAME – RUCHIK C. PATELENROLL NO.100420117048BRANCH :- INSTRUMENTION AND CONTROLSUBJECT :- IBASEMESTER:- 7th

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

Simplest articulator

- can accept only interocclusal records

Sophisticated articulator

- can accept all types of records

SEMI ADJUSTABLE A.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

FULLY ADJUSTABLE A.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

MEAN-VALUE ARTICULATORMEAN-VALUE ARTICULATOR

Triangular frame

Vertical Rod with thumb screw.

Two Condylar elements

UpperUpper member :-member :-

Contain very short cylinder whose upper surface is concave.

Vertical Rod should rest on the center of the incisal guide table during articulation.

Incisal guide table :-Incisal guide table :-

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.

Condylar guidanceCondylar guidance

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.

Vertical Rod or Incisal Pin :-Vertical Rod or Incisal Pin :-

BASIC PARTS OF SEMI-ADJUSTABLE ARTICULATOR Upper member

Lower member

Mounting plates

Condylar analogues

Condylar guidance

Incisal guide pin

Incisal guide table

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.