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June 1990
Volume 24, Issue 6

THE EDITOR'S CORNER

THE EDITOR'S CORNER

EUGENE L. GOTTLIEB, DDS

Post Hoc, Ergo Propter Hoc My father had only one peculiar habit that I can remember. On the bottom shelf of our medicine cabinet was a pile of razor blades that he would use in order, taking one from...

341

Thermoformed Orthodontic Appliances

DR. MICHEL AMORIC

Thermoformed appliances made in a Biostar unit have a number of orthodontic applications. They can provide better anchorage than sectional arches in most cases, because they are not susceptible to the...

351

The DigiGraph Work Station, Part 1: Basic Concepts

SPIRO J. CHACONAS, DDS, MS, GARY A. ENGEL, AB, MS, ANTHONY A. GIANELLY, DMD, PHD, MD, JOHN C. GORMAN, DMD, MS, DUANE C. GRUMMONS, DDS, MSD, MARC S. LEMCHEN, DMD, RAM S. NANDA, DDS, MS, PHD

Editor's note: Parts 2 and 3 of this series are published in the July and August 1990 issues of JCO.The DigiGraph Work Station (Fig. 1) is a powerful clinical tool that offers advantages in a wide ran...

360

CLINICAL AID Adjustable Impression Trays

J.P. JOUETTE, DSO, DUO

Plastic impression trays (A) originally designed for fixed prostheses have also proven useful in orthodontics. In addition to providing good impressions of the teeth and soft tissues (B), they can be ...

368

Keys to Treatment Plans for Class III Patients with Skeletal Discrepancies

DAVID W. WARREN , DDS

When weighing the alternatives of traditional orthodontics, maxillofacial orthopedics, and orthognathic surgery for Class III patients with skeletal discrepancies, I use the following diagnostic keys....

370

Orthodontic Management of Ankylosed Teeth

MICHAEL K. PHELAN, DMD, ROBERT B. MOSS, JR., DMD, R. STEVEN POWELL, DMD, BRIAN A. WOMBLE, DMD

Ankylosis, a localized fusion of alveolar bone and cementum, is the result of a defective or discontinuous periodontal membrane and is apparently caused by mechanical, thermal, or metabolic trauma to ...

375

THE READERS' CORNER

PETER M. SINCLAIR, DDS, MSD

Topics are retention and meeting with parents.1. What is your preferred retainer for the nonextraction patient? More than 80% of the respondents preferred a Hawley-type retainer for the maxilla. About...

379

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