Mark II Instruction Manual - Whip Mix

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so the parts can be accurately reassembled if fractured. The material should be of a dead soft consistency when mixed but it must also have sufficient body to resist flow so that it will stay in place when positioned on the teeth. fig. 75 movements preceding the set of the record media and immediately following the set. Resistance to this movement immediately prior to or after the set indicates functions of the patient’s mandible moving muscles and the checkbite record should be discarded and a new one taken. If resistance to this movement is not encountered, the dentist can be reasonable sure the patient did not effect muscle function. This technique is termed “dynamic technique” and the record termed “dynamic checkbite” because of the small movements of the patients mandible executed by the dentist during the securing of the record. The record media selected for this technique should allow an adequate, consistent and not extended working time. It should have a flash set to a hard consistence that will fracture without warping To facilitate the placement of the record media on the occlusal surfaces of the mandibular teeth construct small paper cones from sheets of paper approximately 4 x 6 inches in dimension. Twist the papter around the index finger as illustrated in fig. 76 to fashion a cone that has an opening at its large end approximately 1 1 ⁄4 inches in diameter (fig. 77A). The margin of the paper is sealed with Scotch Tape so the paper will not unwrap. The small end of the cone is cut with a scissors to produce an opening at the apex approximately 1 ⁄8 inch in diameter (fig. 77B). fig. 76 fig. 77 38
<strong>Mix</strong> record media and gather it into one mass on the end of the cement spatula. Load the media into the bottom of a paper cone (fig. 77C). Squeeze the paper cone behind the record media to capture the media near the apex of the cone and to clean the spatula as it is withdrawn (fig. 77D). After the spatula is removed the cone is squeezed with the index finger and thumb of both hands to push all the media to the apex of the cone and then the cone is folded back on itself to prevent movement of the media toward the large end of the cone when it is compressed (fig. 77E). The cone is squeezed to dispense the media into the central groove of the mandibular teeth (fig. 78). As soon as a cone is loaded the operator can proceed to apply the media to the teeth as the assistant immediately begins to mix another batch of material for securing additional centric relation records. An inexpensive file jacket is used as a mixing pad and provides for convenient disposal of the record media after use. It is good procedure to obtain three centric relation records. One is used to mount the mandibular cast and the remaining two are used to double check the mounting for accuracy with the Denar® Vericheck technique presented in Appendix B of this manual. The setting times of zinc oxide eugenol record medias vary with temperature, humidity, spatulation time and batch number. Under certain conditions the material will set very rapidly and the operator must work quickly to get the material to place before the set occurs. Alternately the material may set slowly. Since it is difficult for the operator to maintain the patient’s mandible in centric relation for extended periods of time, time, the operator using a slow setting record media should wait for a period fig. 78 of time after the media is placed on the mandibular teeth until the set is about to occur before manipulating the patient’s mandible to centric relation. Therefore, the operator should dispense record media for four batches of material on the mixing pad (fig. 79). The first batch is use to time the set of the media and is discarded. The remaining three batches are used to obtain the centric relation records. To time the set, mix the first batch of material according to the manufacturers recommendations. Load the cone and apply the first batch of record media to the mandibular teeth. Do not bring the mandible to centric relation. The operator should then start to count slowly until the set occurs. Once the set has been timed the operator knows how long to pause after the media has been placed on the lower teeth before bringing the fig. 79 39
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 12 and 13: fig. 11 Rear Wall Inclination The p
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 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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