ABSTRACT
This article discusses a metal full-arch interocclusal impression tray. It uses a separation insert that extends into a split handle. Portions of the tray may be used to record sections of an arch singly or in combination from quadrant to full arch. A combination of different materials may be used, selected for low-cost properties that work compatibly side-by-side and/or back-to-back. The tray can be modified by the addition of a mounting stud to the tray handle, which permits linking it to a face-bow to facilitate axis mounting.
Subject(s)
Dental Impression Technique/instrumentation , Costs and Cost Analysis , Dental Impression Technique/economics , Dental Materials , Equipment Design , Humans , Stainless SteelABSTRACT
The hinge axis of the mandible has been determined by using double recording styli at a distance of 2 to 4 inches from the estimated axis area. Visible arcs in pairs on a plain recording surface become the basis for a geometric construction by which the true axis of rotation can be identified. The theoretical basis for this method of axis location is sound and practical as applied and the clinical results indicate that the procedure is accurate.
Subject(s)
Dental Equipment , Dental Occlusion, Centric , Jaw Relation Record , Mandible/anatomy & histology , Equipment Design , Humans , Mandible/physiology , Mathematics , Movement , RotationABSTRACT
This method combines the separate records of (1) maxillary and mandibular impressions, (2) centric occlusion, and (3) arbitrary hinge axis determination. It is made possible by the use of a new instrument which is the combination of a full-arch interocclusal record-impression frame and a facebow.
