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The Role of the Scan/Radiographic Index |
OVERVIEW A critical step in the Digital Treatment Planning process is ensuring the Scan Appliance remains seated and the upper and lower teeth separated during the CT/CBCT scan. In this Clinical Tip, learn why Capture® Clear Bite from Glidewell Direct is a preferred material for fabrication of a Scan Index.
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Bradley C. Bockhorst, DMD
Director of Clinical Technologies,
Glidewell Laboratories
Newport Beach, Calif.
800-521-0576
inclusivemagazine@glidewelldental.com |
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| After receiving his dental degree from Washington University School of Dental Medicine, Dr. Bradley Bockhorst served as a Navy Dental Officer. Today, Dr. Bockhorst is Director of Clinical Technologies at Glidewell Laboratories, where he oversees Inclusive® Digital Implant Treatment Planning Services and is editor in chief and clinical editor of Inclusive magazine. A member of the CDA, ADA, the Academy of Osseointegration, International Congress of Oral Implantologists and the American Academy of Implant Dentistry, Dr. Bockhorst lectures internationally on an array of dental implant topics. He maintains a private practice focused on implant prosthetics in Mission Viejo, Calif. |
PAGE 1 OF 2 A critical step in the Digital Treatment Planning process is ensuring the scan appliance remains completely seated and the upper and lower teeth are separated during the CT/CBCT scan. This can be accomplished with a scan index (also known as a Radiographic Index). It is basically a bite registration of the Scan Appliance related to the opposing dentition.
We have found Capture® Clear Bite from Glidewell Direct to be an excellent material for the fabrication of a scan index.
It is a clear, radiolucent, medium-viscosity vinyl polysiloxane material (Fig. 1).
Lab FabricationThe Scan Appliance is seated on the articulated model. The pin is opened 4 mm to 5 mm to separate the teeth. Capture Clear Bite is injected onto
the occlusal surfaces of the entire arch and the articulator is closed ( Fig. 2). Once the material has set, the Scan Appliance, scan index and
models are shipped to your office.
Chairside Fabrication
If the lab does not have articulated models, the scan index can easily be fabricated chairside. First, ensure the Scan Appliance is fully seated in the
patient's mouth. For partially edentulous cases, inspection windows provide a means to verify seating (Fig. 3). Next, inject an ample amount of Clear Bite around the entire mandibular arch, as if you are making a standard bite registration. Guide patient into closure so the occlusal surfaces of the Scan Appliance and the opposing dentition are slightly separated.
If you are sending the patient to a radiology lab for his or her scan, ensure the patient and the radiology technician are familiar with the procedure for proper seating of the Scan Appliance and scan index.
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If a dual-scan protocol is being performed, the patient is scanned with the Scan Appliance and scan index (Fig. 4a). A second scan is done of the Scan Appliance alone (Fig. 4b). Don't forget to remove the scan index!
Conclusion
Proper understanding and use of the Scan Appliance/Radiographic Index will ensure complete seating of the Scan Appliance and help your Digital Treatment Planning and guided surgery cases go smoothly.
Related Products and Services |
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Capture® Clear Bite
Glidewell Laboratories
Newport Beach, Calif.
800-854-7256
Capture® Clear Bite from Glidewell |
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