Hi Dr. Loney, questions about facebow. I've read your manual about CD start to finish. I've been watching your videos. I also read the book "The Complete Denture A Clinical Pathway 2nd edition" by Dr. Michael I. MacEntee. I'm confused about the facebow part. If the steps are in order, does it mean you usually do facebow after you measure/confirm pt's orientation and VDO? If that's so, after VDO and facebow, you go straight to mounting the maxillary arch before you do CR record? If that' so, does it mean you have the pt wait for a while at the chair during the time you mount the max arch in the articulator and then you go back to see the pt to take CR record? Then, you will take a protrusive record? I see most people demonstrate on how to take a facebow bite on people with teeth, thus I'm quite confused on facebow for making CDs. Thank you Mike
The order of making records and mounting casts can vary, and there are advantages and disadvantages for each sequence. Normally I make a face/ear bow and then mount the maxillary cast so that I can check that the position of the maxillary cast is relatively centred on the articulator and that there is not a problem with the mounting. If the mounting doesn't look right, I can make a new facebow immediately, avoiding the necessity to have to redo both the facebow and the mounting of both casts later. Then I normally make protrusive and centric records for mounting the mandibular cast while the patient is still in the chair so that I can check the mounting with the patient still present. Typically I make the protrusive record first, then one CR record, then a second CR record. Making the CR record last allows me to often remove the last record and rims together as a unit and move directly to the mounting without separating them. Once mounted, the 1st CR record can be used to check the centric mounting. If the mounting is off, a new centric record can be made since the patient is still in the chair. Then the protrusive record is used to set the condylar guidance. If you are efficient, the whole procedure can take 10- 15 minutes maximum. If you don't have mounting materials in your office, or if you prefer to save chair time, all records can be made at one appointment without mounting (facebow/earbow transfer, CR records, protrusive record). This does save chair time and makes a shorter visit for the patient. However, if there are any problems with mounting the maxillary and/or mandibular casts, the patient may need to be re-appointed to remake records and remount the casts, thereby negating any time savings.
Hi Dr. Loney, questions about facebow. I've read your manual about CD start to finish. I've been watching your videos. I also read the book "The Complete Denture A Clinical Pathway 2nd edition" by Dr. Michael I. MacEntee. I'm confused about the facebow part. If the steps are in order, does it mean you usually do facebow after you measure/confirm pt's orientation and VDO? If that's so, after VDO and facebow, you go straight to mounting the maxillary arch before you do CR record? If that' so, does it mean you have the pt wait for a while at the chair during the time you mount the max arch in the articulator and then you go back to see the pt to take CR record? Then, you will take a protrusive record? I see most people demonstrate on how to take a facebow bite on people with teeth, thus I'm quite confused on facebow for making CDs.
Thank you
Mike
The order of making records and mounting casts can vary, and there are advantages and disadvantages for each sequence. Normally I make a face/ear bow and then mount the maxillary cast so that I can check that the position of the maxillary cast is relatively centred on the articulator and that there is not a problem with the mounting. If the mounting doesn't look right, I can make a new facebow immediately, avoiding the necessity to have to redo both the facebow and the mounting of both casts later. Then I normally make protrusive and centric records for mounting the mandibular cast while the patient is still in the chair so that I can check the mounting with the patient still present. Typically I make the protrusive record first, then one CR record, then a second CR record. Making the CR record last allows me to often remove the last record and rims together as a unit and move directly to the mounting without separating them. Once mounted, the 1st CR record can be used to check the centric mounting. If the mounting is off, a new centric record can be made since the patient is still in the chair. Then the protrusive record is used to set the condylar guidance. If you are efficient, the whole procedure can take 10- 15 minutes maximum. If you don't have mounting materials in your office, or if you prefer to save chair time, all records can be made at one appointment without mounting (facebow/earbow transfer, CR records, protrusive record). This does save chair time and makes a shorter visit for the patient. However, if there are any problems with mounting the maxillary and/or mandibular casts, the patient may need to be re-appointed to remake records and remount the casts, thereby negating any time savings.
@@DrLoneyDal Thank you very much for your response!