Pacific Coast Society of Orthodontists Bulletin Summer 2015 - (Page 29)

Special Section Let's Talk about That CBCT Cone-Beam Computed Tomography Cone-Beam Computed Tomography (CBCT) in Today's Orthodontic Practice Ken Fischer Interviews Duane Grummons I am pleased to announce that Dr. Ken Fischer has agreed to become the new editor for "Seasoned Practitioner's Corner," to be renamed "Let's Talk about That." Dr. Fischer's first column features Dr. Duane Grummons. - Editor Dr. Ken Fischer Editor, Let's Talk about That Villa Park, CA Here is my conversation with Duane Grummons, DDS, MSD, a board-certified orthodontist practicing in Spokane, WA. He is Associate Professor of Orthodontics at Loma Linda University Medical Center Orthodontic Department, a published author, an international speaker, a clinical innovator, and critical thinker.-Ken Fischer, DDS Ken Fischer (KF): Duane, thank you for your willingness to share your knowledge and expertise on the use of cone-beam computed tomography (CBCT) in orthodontic practice. Tell our readers how you have learned so much about the use of this technology. Dr. Duane Grummons Spokane, WA Figure 1. Mesiodens Summer 2015  PCSO Bulletin Duane Grummons (DG): In 2002, when the NewTom was first introduced in America, I took immediate interest in the pursuit of learning about CBCT technologies. I studied online resources and scientific publications, purchased textbooks, accessed the American Association of Orthodontists (AAO) library, and reached out to radiologists. My CBCT unit was installed seven years ago, and we utilize the advanced features of leading imaging and surgical software programs. My imaging techs and I have forged a deep and valued knowledge of the advantages and broadening benefits of three-dimensional (3D) technologies in orthodontic practice, especially in evaluations of airways, temporomandibular joint (TMJ), and facial frontal asymmetries. KF: All of us know about the technology that provides us with cephalograms, intraoral X-rays, and panoramic radiographs; tell us how CBCT is different. DG: A CBCT scanner is a dental imaging device that combines low, effective dose X-rays with computing power to produce exquisitely detailed, 3D pictures of the teeth, jaws, and cranial internal structures. Image capture acquisition occurs as a cone-shaped X-ray beam passes around the patient in a one-time 360° circular motion. Computer-generated reconstruction and volumetric renderings from the digital imaging and communications in medicine (DICOM) data are created in multiplaner views in the sagittal, axial, and coronal planes. KF: Do these 3D images provide the orthodontist with more diagnostic information than do traditional two-dimensional (2D) images? For a typical case, is a CBCT scan more valuable to you for diagnosis and treatment planning? DG: CBCT can generate selected renderings that allow for 3D visualization and interpretations; this cannot be done with conventional 2D images. Analysis of unerupted or impacted teeth cannot be accurately made with 2D images. Knowledge of the exact positions of supernumerary teeth, the coronal portions of canines to the Figure 2. Bone lesions 29

Table of Contents for the Digital Edition of Pacific Coast Society of Orthodontists Bulletin Summer 2015

Staying Connected in a Large, Diverse Orgainziation
Palm Springs: A PCSO Favorite
Trustee Report
PCSO at a Glance
PCSO Member News
AAOF Report
Special Section on CBCT
CBCT Imaging Protocols Within PCSO Residency Programs
Cone-Beam Computed Tomography in Orthodontics - Benefits of Comprehensive Visualization
Case Report Pre-Treatment
CBCT in Today's Orthodontic Practice
Case Report Post-Treatment
Differentiating Posterior Crossbites with CBCT Volumetric Images
Apps for the Orthodontist
Dr. Ib Leth Nielsen, San Francisco, CA
Dr. Robert J. Bendzak
Dr. Arthur A. Dugoni's 90th Birthday Makes for a Special Alumni Meeting in San Francisco
Preparing for the Unexpected: Your Emotional SOS Plan, Part II
Resident Spotlight
Hygiene: A New Battle for an Old War
Dr. Peter Picard, 1919-2013

Pacific Coast Society of Orthodontists Bulletin Summer 2015