14238 2000 Articulator_BW - Whip Mix

Fig. 53Allow the anterior end of the upper frame of the articulatorto rest on the horizontal cross bar of the face-bow.Fig. 54Securely tighten the thumb screw on top of the face-bow.Note that the rubber-band maintains the ear piecesagainst the brass mounting pins with a slight pressurewhich helps facilitate stable placement of the face-bowon the articulator.Fig. 55Because the guidance of this instrument is part of theupper frame and the face-bow is, in effect, one piecewith this frame, the face-bow fork is in fixed relation tothe upper frame.Fig. 56The face-bow only relates to the upper member and not tothe lower member of the articulator. The relationship of theface-bow to the lower member is of no consequence at thispoint and the lower member will only serve as a convenientsupport during the mounting of the maxillary cast.20