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June 2024
Volume 58, Issue 6

THE EDITOR'S CORNER

Private Inequity

NEAL D. KRAVITZ DMD, MS

Private equity (PE) refers to investment capital for companies that aren’t publicly traded on the stock market. The idea is to offer investors an alternative avenue to generate returns outside of trad...

334

Independent Canine Retraction Using T-Loop Springs

SYLVAIN CHAMBERLAND DMD, MSc

Dr. Sylvain Chamberland describes the biomechanics of using segmental, mushroom-shaped TMA T-loop springs to retract and extrude ectopic canines independently with differential moments. Two sample cases are shown, involving a 12-year-old male and a 21-year-old female.

335

CASE REPORT

In-House 3D-Printed Shape Memory Aligners for Retreatment after Fixed Retainer Failure

MATIAS GABRIEL SIVAK DDS, PhD, YONG-MIN JO DMD, MSD, PhD, RAVINDRA NANDA BDS, MDS, PhD, TILL E. BECHTOLD DMD, MS, PhD

Drs. Sivak, Jo, Nanda, and Bechtold demonstrate the digital design and in-house 3D-printing of customized aligners with thermomechanical shape memory, a property that makes them flexible enough for easy insertion upon exposure to hot water but allows them to regain their shape upon cooling to body temperature.

345

ALIGNER CORNER

Nonsurgical Treatment of an Adult Skeletal Class II Malocclusion with Clear Aligners

TERESA SOBRAL COSTA DDS, MSC, PhD, BEATRIZ VAZ DUARTE DDS, MSC, ANA SINTRA DELGADO DDS, MSC, PhD

In this edition of the Aligner Corner, the authors document the successful treatment of a severe Class II malocclusion in a nongrowing patient using a combination of Invisalign, temporary anchorage devices in the infrazygomatic crest, and intermaxillary elastics.

354

CASE REPORT

Hemisection of an Ankylosed Lower Second Deciduous Molar for Orthodontic Closure of a Congenitally Missing Second-Premolar Space

RAVIKUMAR ANTHONY BDS, MDS, MS, NIKA REZAEIKALANTARI DDS, BELAL HEDDAYA DDS, MS

In a patient with a missing lower second premolar, the distal half of an ankylosed second deciduous molar is removed to enable mesial drift of the first permanent molar. The mesial half of the tooth is later extracted to allow further mesialization of the first molar using Class II elastics.

367

PEARLS

Customized Metal-Printed Appliance for Molar Derotation and Distalization

SEUNG-WOO YOO DMD, TILL E. BECHTOLD DMD, MS, PhD

This Pearl illustrates a completely digital workflow in which computer-aided design and selective laser melting are used to print a customized appliance that can accomplish the challenging movements of upper first-molar derotation and distalization with ample anchorage.

377

Continuing Education in the June 2024 Issue (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.

379

Glass Ionomer Open Exposure (GOPEX) of Palatally Impacted Canines

JULIA NAOUMOVA DDS, PhD, JUDIT HANSSON DDS, KEN HANSEN DDS, PhD

As a modification of the open surgical technique for exposing impacted canines, Drs. Naoumova, Hansson, and Hansen explain the use of glass ionomer cement to cover the canine crown. Two patients in early to middle adolescence are presented as examples.

381

Product News in June 2024 Issue

PRODUCT NEWS is presented as a service to the reader and in no way implies endorsement by JCO.

390

DIGITAL PEARLS

Temporary Maryland Bridge Retainer

In this video Pearl, Dr. Kravitz shows how to place a temporary Maryland bridge to hold space for pontics and eventual implant restorations.

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