Treatment effects of a fixed intermaxillary device to correct class II malocclusions in growing patients.

Background: The objective of this study was to evaluate the treatment effects of Forsus™ Fatigue Resistant Device (FRD; 3M Unitek, Monrovia, CA, USA) in growing patients with Class II non-extraction malocclusions.

Methods: A retrospective sample of 24 class II patients treated consecutively with the FRD followed by comprehensive orthodontic treatment was compared to a sample of untreated control subjects from the Bolton Brush Study who was matched in age, sex, and craniofacial morphology. Lateral cephalometric radiographs were taken before treatment (T1) and after removal of fixed appliances (T2).

Class III correction using an inter-arch spring-loaded module.

Background: A retrospective study was conducted to determine the cephalometric changes in a group of Class III patients treated with the inter-arch spring-loaded module (CS2000®, Dynaflex, St. Ann, MO, USA).

Methods: Thirty Caucasian patients (15 males, 15 females) with an average pre-treatment age of 9.

Evaluation of masseter muscle morphology in different types of malocclusions using cone beam computed tomography.

Objectives: To evaluate the length and orientation of masseter in different types of malocclusions using Cone Beam Computed Tomography (CBCT).

Methods: Samples of 180 patients seeking orthodontic treatment at the University of Nevada, Las Vegas School of Dentistry, were included in the study. Pre-treatment multi-slice CBCT scans of these patients were divided into three anteroposterior groups: Class I subjects with ANB angle 0° to 5°; Class II subjects with ANB angle >5°; and Class III subjects with ANB angle <0°.

Prevention of enamel demineralization during orthodontic treatment: an in vitro comparative study.

Aim: Enamel demineralization is considered to be the most prevalent and significant iatrogenic effect associated with fixed orthodontic treatment and can seriously jeopardize both tooth longevity and dental esthetics. This in vitro study was undertaken to compare the effectiveness of four different commercially available surface treatment medicaments for the inhibition of enamel demineralization.

Methods: Seventy-five intact maxillary premolars extracted from patients undergoing orthodontic treatment were divided into five equal groups and were subjected to one of the following protocols: no treatment (control group) or treatment with one of the following four medicaments: fluoride varnish (Fluor Protector [FP]), casein phosphopeptide-amorphous calcium phosphate (GC Tooth Mousse [TM]), calcium sodium phosphosilicate (SHY-NM), and casein phosphopeptide-amorphous calcium phosphate with fluoride (GC Tooth Mousse Plus [TMP]).

Anteroposterior relationship of the maxillary central incisors to the forehead in adult white males.

Aim: To evaluate and compare the anteroposterior relationship of the maxillary central incisors to the forehead in white male adults with harmonious profiles and white male adult orthodontic patients.

Methods: Photographs of 101 white male adults with good facial harmony (control sample) were compared with photographs of 97 white male adults seeking orthodontic treatment (study sample). All were profile images with the maxillary central incisors and foreheads in full view.

Stability of Class II treatment with an edgewise crowned Herbst appliance in the early mixed dentition: Skeletal and dental changes.

Introduction: The objectives of this research were to assess skeletal and dental changes in patients with Class II malocclusion treated with the edgewise crowned Herbst appliance in the early mixed dentition and to measure the stability of treatment after a second phase of fixed appliance therapy.

Methods: Twenty-two patients (ages, 8.4 ± 1.

Class III camouflage treatment: what are the limits?

Introduction: The purpose of this study was to determine the skeletal, dental, and soft-tissue changes in response to camouflage Class III treatment.

Methods: Thirty patients (average age, 12.4 + or - 1.

Comparison of computer-generated, enhanced and conventional 2-dimensional radiographic imaging.

Introduction: Technological advances have attempted to improve the standard of traditional x-ray imaging. ImageIQ software (LumenIQ, Bellingham, Wash) enhances conventional radiography by producing a computer-generated, enhanced 2-dimensional (2D) image, adding depth and detail. The software converts the scales of gray to topographic height values, which are easier for the eye to see.

Use of conventional tomography to evaluate changes in the nasal cavity with rapid palatal expansion.

Introduction: The relationship between nasal airway resistance and the use of rapid palatal expansion appliances remains controversial. The purpose of this study was to use conventional tomography to determine the anatomical changes in the nasal cavity after maxillary expansion.

Methods: Nineteen patients (aged 8-15 years) were included in the study.

Treatment effects of the edgewise Herbst appliance: a cephalometric and tomographic investigation.

Introduction: The crown Herbst appliance was introduced in the late 1980s because of shortcomings of the banded Herbst. In edgewise Herbst treatment, a fixed appliance is used with the crown Herbst to maximize the skeletal effects of treatment. Treatment response to the edgewise Herbst appliance has not been reported in the literature.