In alignment
Using the OneBite evice for bite recording
By Dr. Ken Hovden, Daly City, Calif., Clinical Mentor for the Hornbrook Group. Lab work by Smile Designs by Rego. Information provided by Precision Dental Products.
The OneBite consists of a bite tray for picking up tooth position and a vertical/horizontal leveling bar. It eliminated concerns about setting time, because the reference bar can be adjusted well after the bite material is set. When the desired position is achieved, the bar's set screw is locked so the information can be transferred to the lab.
Following are step-by-step procedures for taking an accurate bite with OneBite.
The pre-operative smile is seen in Fig.1, close-up and retracted.
- With the reference indicator gently attached, load the tray with bite material and have the patient close down until the material sets. Note: Don't worry if the reference bar is not perfectly aligned at this point; just be sure it does not impinge on the patient's nose.
- After material sets, loosen the set screw and align the reference bar with the proper horizontal and vertical reference points.
- Gently lock the set screw and step back to confirm the proper position of the reference bar. If it is not properly aligned, loosen the set screw and adjust.
- When the reference bar is properly positioned, flow "super glue" around the set screw to lock its position (Fig.2).
- Take a full-face photo for the lab.
- Have the patient open and remove the assembly.
- Disinfect and send the OneBite to the lab.
Fig. 3 shows the close-up view of the final result.
Canted centrals?
Not anymore
How do you currently prevent anterior crowns coming back from the lab leaning to one side? Do you use a facebow? A stick bite? Or some other form of reference?
Research conducted at the University of Washington Dental School shows that the public will accept a midline shift of up to 4 mm, but a cant greater than 2mm is unacceptable. Our job is to deliver anterior crowns with no cant.
There currently are multiple techniques for communicating the anterior horizontal plane of occlusion to the laboratory, but some of these methods can be difficult to orient.
The OneBite device allows the dentist to quickly and accurately transfer important information to the laboratory. The all-in-one system registers exact midline and horizontal esthetic planes.
It's 90° angle locking position provides a right and left torque as well as right and left movement for patients with symmetrical faces, the bars work independently of each other, enabling angles to be changed while retaining the ability to change right and left torque and movement.
Kenneth Hovden DDS - Providing services in cosmetic dentistry, smile design and extreme makeover dentistry to the areas of Daly City and San Francisco.
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