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A Novel Protocol to Evaluate Hard and Soft Tissue Relationships in Three Dimensions without the Use of Additional Radiographic Studies - Exam 85
by Maness, Hottel, Trojan, Hottel
The evaluation of hard and soft tissue relationships is an important part of the
study of facial morphology, craniofacial development and orthodontic treatment
and outcomes. Historically, this evaluation has occurred in two dimensions. The
purpose of this study was to develop a protocol to study the relationships of hard
and soft tissues in three dimensions without the use of additional radiation.
1) Data sets needed for the study of soft and hard tissues without the use of additional radiation are:
Two 3dMD images of the patient
Stone diagnostic models
A previously exposed lateral cephalometric radiograph
All of the above
2) The stone orthodontic models trimmed in occlusion were scanned utilizing a:
Nikon digital camera
A motion view digital model scanner
An 8 mm movie camera
3) How were the digitized models "saved"?
Stereolithography file format
4) Stereophtogrammic cameras offer 3-dimensional studies of the face.
5) Photogrammic images may be superimposed on 3-dimensional cone beam technology. The downside to this analysis is:
That it exceeds traditional orthodontic radiation doses.
That is gives no additional information.
That it does not reveal pathology.
That is often causes osteoradionecrosis.
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