The total reading time of this paper is 6 minutes
Seven o'clock Monday morning
How many times have you failed? How to make the bite successfully? I think I'm the only one who knows how hard it is~~
There are many functions of jaw position relationship record, such as providing stability and support for the remaining dentition, saving operation time beside the chair, reducing the possibility of occlusal elevation or reduction of the prosthesis, reducing the possibility of causing perforation of the prosthesis or having to adjust the right jaw teeth, etc
One time success is the ultimate ideal (mainly do not want to re take ah have wood)! We can effectively find out the deformation of the model through the jaw record, and achieve the final perfect shape through several criteria established by the model between medical technology
Today, let's learn the multiple extraction method of jaw biting record with Mr. Ma Chao!
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Specific knowledge explanation click the picture to enlarge and watch
What is the content of this lecture?
Now let's pick out the key content to explain. Please study together~
1、 Operation steps
1. Make a record of mixed jaw. 2. Make sure the masseter muscles bulge to reach the maximum contact with the tip of teeth. 3. Repair the gap between the buccal side and the pit. 4. Check repeatedly in the wearing area
2、 Medical technology check bite through jaw record
(figure left: front teeth of maxillofacial record dressing; figure right: rear teeth of maxillofacial record dressing)
Step1 - paste finishing
Buccal and maxillofacial paste tumor, prevent the gasket from biting the jaw
Step2 - jaw record repair
Pit gap and buccal side should be recorded
Tips: if the above fails to meet this standard, it is determined as a problem model, and it is recommended to take it again!
3、 How can medical technology pass the model examination to check whether there is serious deformation?
Observe whether there is contact in the wearing area of the jaws. There will be wear at the working tip in the model. If the working tip in the model does not contact, it is determined as the model deformation.
It is recommended to take out the mold with silica gel!!
Relative to (bite 100 microns) (adjacency 12 microns) is the general inspection standard. If the operation is not carried out according to the "powder ratio" in clinical practice, the deformation of the jaw model is relatively high, which is easy to cause the deviation of the jaw?.
4、 The problem of jaw adjustment is often encountered in clinic
1. White model deformation
2. Effective examination of the deformation of the right jaw with the record of the mixed bite
Problem model solution:
Check: repair the buccal silica gel, and make sure the gap between the working side and the opposite jaw is firm
1. It is found that the front grinding? Air opening? Contacts
2. Find the method of jaw alignment and jaw record reduction
3. It is found that there is abrasion in the front grinding area but contact with the method
To jaw: observe whether there is contact in the wearing area of the bite jaw. There will be wear at the "inner" working tip. When the "most" contact is made, the "working tip" is not contacted, which is defined as the deformation of the jaw model.
The accuracy of silica gel is relatively high, and the relative deformation rate of alginate and paste is relatively high when they are not operated according to vacuum or powder?.
Related factors of repairing wearing and adjusting jaw
5、 Repair preparation space
The zirconium crown was completed by wearing teeth and adjusting jaw, and the thinnest part was 0.2mm. Where's the other 0.3? Gone?
Prepare the space inspection method: place the heavy silica gel on the base jaw, press evenly, place it on the jaw, cut longitudinally after solidification, and check whether it fits.
Case 1:
Need to be solved: the thinnest part is 0.2mm, check the jaw record tightness, and measure the spare space at the thinnest part.
→ Technology Room Process
1. Binder space 0.03mm ~ 0.02mm
2. Bite paper thickness 100 μ?
3. Anatomic jaw frame: through the fork transfer of the patient's upper jaw immobility and flatness, the distance from the "tunnel" to the upper jaw is obtained, and the movement radius of the lower jaw is closer to the actual situation of the patient.
Jaw support: when the rotation axis is constant, the jaw support shortens the movement radius, so the jaw bite is generally at the back, i.e. the closer it is to the rotation axis, the more?.
4. Thickness of carbon paper 0.1mm
0.17MM＋0.1MM＝0.27mm
0.03mm+0.1mm+0.04mm＝0.17mm
Case 1 answer
0.03mm adhesive space + 0.1mm snap in paper + 0.04mm?? vertical movement = 0.17mm
0.17mm + simple jaw frame movement radius = 0.5mm + 0.17mm = 0.67mm, recommended thickness of zirconia 0.7mm-0.8mm
6、 Record of mixed jaw with bilateral silica gel bracket
The standard system can effectively avoid the deformation of the model, but the bite can not reach the most contact? It is recommended to use silica gel for tray and jaw!
T-a-o jaw recording method
Conclusion: silica gel is taken out in static mode, jaw record is taken out in the most extreme contact, pad on the static mode, there will be incomplete fit state, grinding area is more obvious, and static mode taking position is in the most extreme contact with the inside.
The two sides of silica gel paste are the same, and the jaw biting is still unstable
Key points of t-a-o bite record
T-a-o bite recording procedure
Vertical jaw extraction most contact?. The occlusal contact problems in? Cavity repair include static occlusal contact (mainly occlusal contact when the? Tips are interlaced) and dynamic occlusal contact (mainly occlusal contact in masticatory motion).
1. Control mold taking
（1） Two coins with a diameter of? Yuan? Small weight mixed and placed in the abutment position;
(2) Put the light body on both sides into the door (wear a sleeve for internal operation, pay attention to protection)
2. Control silica gel
3. Control jaw record
(1) Re bite the contact surface of posterior teeth
(2) Wax form
(3) 100 μ m bite point examination
(4) Contact position of bite point
4. control paste?
5. Control jaw frame
6. Control biting paper
Conclusion: it is suggested to use the mixture of heavy silica gel for jaw record, the ratio of the upper and lower silica gel to the mold gypsum water powder for mixing, the zero expansion gypsum for jaw frame, the recommended thickness of full zirconium teeth preparation is 0.7mm ~ 0.8mm, the anatomical type for jaw frame, the t-a-o bite record can stabilize the jaw, take out the maximum tip contact, and the use of the reference model of the single crown within 2 of the posterior inlay jaw.
The operation demonstration is in the live broadcast back to see ~ such a wonderful operation, you deserve to have, look back and forth quickly!
Previous related live broadcast
Gifts and fragrance
The questions in this issue are as follows. Please complete the gift link in the way of [vote + message], and participate more! (Tips: the answer format is as follows: your options, your reasons for choosing, your expectations / suggestions)
What else do you want to know about the occlusal record?
We'll choose the most attentive of you
Send out: a box of Baoshi bite paper (100 μ m, red)
[at the same time] if the following conditions are met, you can get prizes:
01 high quality message (must be to the point)
02 the number of comments liked ranked first
03 no less than 40 comments liked
04 message deadline: 24:00 on March 30 (Monday)
05 the deadline for the statistics of the liked number: March 31 (Tuesday) 17pm
We will choose the best message and reply the winning result on Wednesday. Please look forward to it.
Today's weeklong class is over here
More interesting content, please pay attention to the official account of the week.
See you next time, seeu~
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