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April 2021
Volume 55, Issue 4

THE EDITOR'S CORNER

The Risks of Root Resorption

ROBERT G. KEIM DDS, EdD, PhD

One of the more comforting aspects of practicing orthodontics is that we see few complications of treatment in comparison with, say, our colleagues in oral and maxillofacial surgery. Surgical complica...

206

OVERVIEW

Clinical Considerations in Patients at High Risk for Root Resorption

EBRAHIM A. AL-AWADHI BDS, MSc, PhD, MFD, MOrth, FFD, LEAH S. FINAN BDS, MFD

Drs. Al-Awadhi and Finan list patient-related risk factors for root resorption and review evidence-based recommendations from the literature for avoiding orthodontically induced resorption. Appliance choices, types of tooth movement, force application, duration of treatment, and extractions are covered.

207

Functional Class II Treatment with a Miniplate-Anchored Herbst Appliance

PAOLO MANZO DDS, PhD, STEFANO MARTINA DDS, PhD, PIETRO LEONE DDS, VINCENZO D’ANTÒ DDS, PhD

Lower incisor proclination due to loss of anchorage is almost unavoidable in conventional Herbst treatment. Drs. Manzo, Martina, Leone, and D’Antò demonstrate how to use miniplate anchorage to take advantage of the Herbst’s effectiveness in correcting mandibular retrusion while minimizing dental side effects.

218

PEARLS

Lateral Incisor Bracket Positioning for Phase I Treatment

NEAL D. KRAVITZ DMD, MS, SHAWN L. MILLER DMD, MMedSc

This month’s Pearl shows how to modify bracket positioning on the upper lateral incisors during Phase I treatment to avoid premature distal root tip in the path of the erupting canines, thus preventing the development of an unsightly midline diastema.

227

Intraoral Maxillary Protractor for Early Treatment of a Class III Malocclusion with Maxillary Deficiency

MATHEUS MELO PITHON DDS, MSc, PhD, JUCIARA FRANÇA DOS SANTOS DDS, CAMILA SILVA DE AMORIM DDS, MSc, ORLANDO MOTOHIRO TANAKA DDS, MSc, PhD, LUCIANNE COPLE MAIA DDS, MSc, PhD

This simple toothborne device, as described by Dr. Pithon and colleagues, can be installed as soon as the lower first permanent molars have erupted. Combined with rapid maxillary expansion, it eliminates the need for extraoral appliances or miniplate anchorage in a skeletal Class III case.

229

BOOK REVIEWS

Dentists at War: 12 Who Went Beyond the Call of Duty

ROBERT G. KEIM DDS, EdD, PhD

NORMAN WAHL, DDS, MS, MA 214 pages. $13.99. 2020.AuthorHouse, 1663 S. Liberty Drive, Bloomington, IN 47403.(833) 262-8899; www.authorhouse.com. I will confess to being a lifelong military history buff...

236

CASE REPORT

Uprighting an Impacted Lower Canine with Miniscrew Anchorage in a Severely Oligodontic Patient

MARCO MIGLIORATI DDS, MSc, PhD, SARA DRAGO MSc, DDS, ARMANDO SILVESTRINI-BIAVATI MD, DDS

A hybrid tooth- and boneborne appliance is used with anchorage from an obliquely inserted miniscrew to treat a patient with the congenital absence of most permanent teeth. Prosthetic restoration is performed using a nylon-based denture material in both arches.

237

Product News in April 2020 Issue

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

246

Continuing Education from April 2020 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.

247

THE CUTTING EDGE

A Fully Digital Workflow for PEEK Fixed Retainers

MATTEO BERETTA DDS, MS, ALESSANDRO MANGANO DDS, MS, ALESSANDRO GIANOLIO DDS, MS, STEFANO NEGRINI CDT, FABIO FEDERICI CANOVA DDS, MS, NUNZIO CIRULLI DDS, MS, PhD

The authors describe how a biocompatible material called polyetheretherketone can be used to make an upper or lower lingual retainer by means of a completely digital workflow, with fabrication from either a milling machine or a three-dimensional printer.

249

CASE REPORT

Management of Alveolar Bone Exostosis after Orthodontic Treatment

AMORNRUT MANOSUDPRASIT DDS, MSD, CAGs, WORATHEP CHANTADILOK DDS, MONTIAN MANOSUDPRASIT DDS, MDS, FRCDT

This patient developed upper and lower buccal alveolar bone exostoses after premolar extractions and anterior retraction. The upper bony protuberance is removed with minor osseous surgery, and post-treatment follow-up shows normal healing and good orthodontic results.

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