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February 2011
Volume 45, Issue 2

THE EDITOR'S CORNER

Lies, Damned Lies, and Statistics

ROBERT G. KEIM DDS, EdD, PhD

One of my favorite quotations comes from Mark Twain's Own Autobiography: The Chapters from the North American Review. As the American humorist put it with his customary wit, "Figures often beguile me,...

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2011 AAO CONVENTION

Toddlin' Back to Chicago

DAVID S. VOGELS III

Chicago has something to offer everyone, from architecture aficionados to art addicts, from gourmands to sports fans. Since the AAO last visited for its annual meeting in 2000, a number of exciting ne...

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The Skeletal Frog Appliance for Maxillary Molar Distalization

BJÖRN LUDWIG DMD, MSD, BETTINA GLASL DMD, MSD, GERO S.M. KINZINGER DMD, MSD, PhD, KEVIN C. WALDE DDS, MS, JÖRG A. LISSON DDS, PhD

Appliances typically used for molar distalization in Class II cases--removable plates and various types of headgear--require a high degree of patient motivation. This disadvantage has encouraged the d...

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CASE REPORT

Extraction of a Geminated Central Incisor

ALDO GIANCOTTI DDS, MS, PAOLA MOZZICATO DDS, FRANCESCO GERMANO DDS, CLAUDIO ARCURI DDS, MS

Abnormalities in tooth size, shape, and structure generally occur during the morphodifferentiation stage of development, although tooth buds can fuse during the histological phase.1-4 Congenital tooth...

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THE READERS' CORNER

Cone Beam Computed Tomography Scanners

JOHN J. SHERIDAN DDS, MSD

(Editor's Note: The Readers Corner is a quarterly feature of JCO in which orthodontists share their experiences and opinions about treatment and practice management. Pairs of questions are mailed peri...

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Clinical Application of a Modified Lip Bumper

RAPHAEL L. GREENFIELD DDS, MSD

Although the literature supports the efficacy of lip bumpers in producing as much as 8mm of arch development in mixed-dentition cases with mild-to-borderline crowding,1-16 this versatile appliance rem...

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Evaluation of Facial Asymmetry with Three-Dimensional Cone-Beam Computed Tomography

YOON-AH KOOK DDS, PhD, YOONJI KIM DDS, PhD

Orthognathic surgery and temporary anchorage devices can now correct malocclusions that were once considered untreatable.1 To make a differential diagnosis between orthodontic and surgical approaches,...

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