Mark II Instruction Manual - Whip Mix

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fig. 11 Rear Wall Inclination The posterior fossa wall of the <strong>Mark</strong> <strong>II</strong> Articulator is nonadjustable but is constructed to average anatomic dimensions. It is inclined posteriorly 25 degrees to allow for a backward movement of the rotating condyle as it moves outward (fig. 12). HAND GRASPS To use the articulator properly the operator must master the proper hand grasps. A right handed operator curls the fingers of the left hand under the mandibular crossbar and places his left thumb on top of the upper bow (fig. 13). To effect both left and right lateral excursive movements the left thumb guides the back of the upper bow while the forefinger and thumb of the right hand holds the incisal pin moving it in the desired direction. These hand grasps can be best described as the underhand push– pull grasps and the underhand protrusive grasps. In order to execute lateral movements the centric latch must be open. Underhand Push Grasps To effect a right lateral mandibular movement be sure the latch is open and move the upper bow to the left. (The left side of the articulator is the left side of the instrument as it is viewed from the rear.) Pressure is applied with the left thumb to insure the left orbiting condyle maintains contact with its superior and medial fossa walls and the right rotating condyle maintains contact with its superior and rear fossa walls (fig. 13). Rear Wall fig. 12 fig. 13 10
Underhand Pull Grasps To effect a left lateral mandibular movement the upper bow is moved to the right and pressure is applied with the left thumb to insure that the right orbiting condyle maintains contact with its superior and medial fossa walls and the left rotating condyle maintains contact with its superior and rear fossa walls (fig. 14). fig. 14 fig. 15 Underhand Protrusive Grasps (Protrusive Push Grasp) To effect a straight protrusive movement the upper bow is moved straight posteriorly with the right hand and the left thumb is used to apply downward pressure on the back of the upper bow so that the condyles maintain contact with their superior fossa walls. The overhand grasps as contrasted from the underhand grasps are also useful in manipulating the articulator and are required to efficiently set a fully adjustable articulator to a pantographic record. Figure 15 illustrates the Overhand Push Grasp; fig. 16 the Overhand Pull Grasp, and fig. 17 the Overhand Protrusive Grasp. When employing the overhand grasps to manipulate the articulator be sure to apply pressure to the back of the articulator to insure that the condyles maintain contact with their respective fossa bearing surfaces. fig. 16 fig. 17 11
Page 1: The Denar ® Mark II System TECHNIQ
Page 4 and 5: ACKNOWLEDGEMENTS The Mark II System
Page 6 and 7: APPENDICES A. Checkbite Procedure .
Page 8 and 9: WHY SHOULD THE MARK II SYSTEM BE US
Page 10 and 11: To Lock in the Open Position When t
Page 14 and 15: III. RELATING CONDYLAR MOVEMENTS TO
Page 16 and 17: fig. 23 fig. 25 The rotating condyl
Page 18 and 19: fig. 29 To facilitate a clear under
Page 20 and 21: justment (Denar ® Mark II) were ad
Page 22 and 23: fig. 33 fig. 34 Average measurement
Page 24 and 25: Put the bite fork assembly back in
Page 26 and 27: fig. 44 fig. 45 reference points (f
Page 28 and 29: The maxillary cast support is adjus
Page 30 and 31: With the facebow application (not t
Page 32 and 33: VII. SETTING THE ARTICULATOR TO CHE
Page 34 and 35: VIII. INCISAL TABLE ADJUSTMENTS CUS
Page 36 and 37: fig. 69 fig. 71 Scale fig. 70 fig.
Page 38 and 39: APPENDIX A CHECKBITE PROCEDURE The
Page 40 and 41: so the parts can be accurately reas
Page 42 and 43: mandible to centric relation. It is
Page 44 and 45: APPENDIX B DENAR SYSTEM PROTOCOL FO
Page 46 and 47: 2. Tripod Contacts (. . .). Centric
Page 48 and 49: (O.P.S.C.) will ultimately be locat
Page 50 and 51: A plastic record card is now secure
Page 52 and 53: sufficient unprepared teeth to prov
Page 54 and 55: APPENDIX E Denar ® Mark II Semi-Ad
Page 56 and 57: APPENDIX F ARTICULATOR CARE AND MAI
Page 60: The Denar ® Mark II System TECHNIQ

Mark II Instruction Manual - Whip Mix

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