July 2017
Volume 51, Issue 7

THE EDITOR'S CORNER

Controlling the Vertical Dimension

ROBERT G. KEIM DDS, EdD, PhD

The vertical dimension of the face, or facial height, is one of the more esoteric concepts in dentistry. The online Medical Dictionary defines it as "the linear dimension in the midline from the hairline to menton." Anterior facial height is rather self-evidently described as "the sum of upper and lower facial heights, the lower limit of the latter variously defined as the pogonion, gnathion, or menton. Posterior facial height is often measured from the gonion to the condylare, sella, or center of face point." The occlusal correlate of facial height is the vertical dimension of occlusion (VDO).

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THE CUTTING EDGE

3D-Printed Double-Wire Bracket for Anterior Alignment

GI-SUN BAE PhD, YONG-IL KIM PhD, SEONG-SIK KIM PhD, SOO-BYUNG PARK PhD, WOO-SUNG SON PhD

This article describes the production of a fully customized, twin-wire lingual bracket using a 3D printer. Indirect-bonding jigs are printed along with the brackets. The resin material is strong enough to withstand orthodontic forces when two strands of wire are used; friction is minimized by forming the slot entrance as a clip.

377

Interdisciplinary Aligner Treatment of Short-Face Patients

JAMES CHENG-YI LIN DDS, STACY CHEN DDS, ERIC JEIN-WEIN LIOU DDS, MSC, KENJI OJIMA DDS, S. JAY BOWMAN DMD, MSD

The authors introduce a comprehensive esthetic interdisciplinary treatment approach, including clear aligners, for short-face patients with complex facial, smile, and esthetic problems. As demonstrated in four cases, the orthodontist may be required to coordinate treatment with prosthodontics, periodontics, restorative dentistry, and orthognathic surgery to achieve optimal results.

382

Use of Osseointegrated Implants for Orthodontic Anchorage

DIANA WEBER DDS, MS, STEVEN HANDEL DMD, DANIEL DUNHAM DDS

This biomechanical setup, called the handlebar-style technique, uses an osseointegrated implant-supported device as anchorage to accommodate vectors for correction of a single misaligned tooth while preventing undesirable movement of adjacent teeth. An existing implant can be used or one can be strategically placed, as illustrated in two cases.

406

Effects of Declining Battery Voltage on Light Intensity and Power Consumption of Light-Curing Units

SERKAN ÖZKAN DDS, PhD, YESIM YASEMIN GOLLERLI DDS

Clinicians have many choices of lithium-ion battery-powered portable light-curing units at various price points. This study measures the decline in light intensity and irradiance percentage as voltage declines in several commonly available devices. Recommendations are made for the inclusion of LED driver circuits with constant current.

411

CASE REPORT

Class II Correction in an Adult High-Angle Patient Using Low-Friction Mechanics and Skeletal Anchorage

NASIB BALUT DDS, MS, LAURA GIL DDS, MS

A nonextraction approach is demonstrated in an adult high-angle patient with a skeletal Class malocclusion and severe crowding. By using low-friction, passive self-ligating brackets and bilateral temporary anchorage devices over 18 months of treatment, the authors are able to avoid any surgical intervention other than an advancement genioplasty.

419

PEARLS

Root-First Lingual Canine Retraction with Power Arms

MORTEN GODTFREDSEN LAURSEN DDS, BIRTE MELSEN DDS, DrOdont

Uprighting canines is challenging with lingual appliances because of the narrow brackets and short interbracket distances. This Pearl describes a lingual technique that can be effectively employed after premolar extractions, using a special Incognito canine bracket with an auxiliary tube in combination with lingual power arms and palatal mini-implants.

427

Continuing Education for July 2017 (questions only)

Click here to download a PDF of the printed questions from the journal for reference. CE tests must be taken online. See the link to continuing education on the menu bar at the top of the screen.

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