Abstract

As orthodontists, we are often unaware of the technical and methodological advances in other dental specialties. However, many of these new experimental developments may ultimately become accepted dental therapy and influence the diagnosis and treatment of our orthodontic patients. Therefore, as part of the dental community, we must keep abreast of current information in all areas of dentistry. The purpose of this section of The Angle Orthodontist is to provide a brief summary of what is new in dentistry.

Abstract

This investigation was designed to compare the esthetic effects of extraction and nonextraction treatments. Panels of 58 laypersons and 42 dentists evaluated randomly presented pre- and posttreatment profiles of 70 extraction and 50 nonextraction Class I and II Caucasian patients. The samples were similar at the outset; however, at the end of treatment, the extraction patients' faces were, on average, 1.8 mm “flatter” than the faces of nonextraction subjects. The flatter faces were preferred by both panels, dentists more so than laypersons. In general, nonextraction treatment was seen as having little effect on the profile, whereas the perceived effect of extraction treatment was a statistically significant function of initial soft tissue protrusion—the greater the initial protrusion, the greater the benefit. The point at which a reduction in protrusion produces a perceived improvement was explored by way of regression analysis. Both panels saw extraction as being potentially beneficial when the lips were more protrusive than 2 to 3 mm behind Ricketts' E-plane. It is concluded that extraction treatment can produce improved facial esthetics for many patients who present with some combination of crowding and protrusion.

Abstract

The aim of this study was to investigate the prevalence of bacteremia after orthodontic debanding and debonding. The study group comprised 30 patients (10 men, 20 women). All were treated using the Edgewise technique. Patients with acceptable oral hygiene and fixed appliances in both jaws were included in the study group. Blood samples were obtained using a strict aseptic technique before and after removal of bands and brackets. A 6.6% bacteremia prevalence was observed in both preoperative and postoperative blood samples.

This article is important because little scientific work has been done to investigate the effect of common orthodontic procedures on the presence of measurable bacteria in the bloodstream. After approximately 1000 case reports and case series, we now know that the consequence of displaced oral bacteria from dental manipulations can cause death or serious illness from bacterial endocarditis.1 Bacteremia is a necessary intermediate in the causal pathway of endocarditis, but it must act in conjunction with other risk factors, such as the presence of a damaged heart valve. Many other factors may determine whether bacteremia will lead to

Effects of printing layer thickness and build orientation on the mechanical properties and color stability of 3D-printed clear aligners

Chengzan Wu,

Utkarsh Mangal,

Na Bai,

Hoon Kim,

Geelsu Hwang,

Jung-Yul Cha,

Kee-Joon Lee,

Jae-Sung Kwon, and

Sung-Hwan Choi

The Angle Orthodontist in 2000 and Beyond

Abstract

What's New in Dentistry

Abstract

The Esthetic Impact of Extraction and Nonextraction Treatments on Caucasian Patients

Abstract

Investigation of Bacteremia Following Orthodontic Debanding

Abstract

Investigation of Bacteremia Following Orthodontic Debanding

Hypodontia in Children with Various Types of Clefts

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Effects of a Nonrinse Conditioner and 17% Ethylenediaminetetraacetic Acid on the Etch Pattern of Intact Human Permanent Enamel

Abstract

Polymerization with the Argon Laser: Curing Time and Shear Bond Strength

Abstract

Sliding Mechanics of Coated Composite Wires and the Development of an Engineering Model for Binding

Abstract

Effects of T-Loop Geometry on Its Forces and Moments

Abstract

Specialized Spring Design in Segmented Edgewise Orthodontics: Further Verification of Dedicated Software

Abstract

Respiratory-Related Genioglossus Electromyographic Activity in Response to Head Rotation and Changes in Body Position

Abstract

Osseous Morphology and Spatial Relationships of the Temporomandibular Joint: Comparisons of Normal and Anterior Disc Positions

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Craniofacial Asymmetry and Temporomandibular Joint Internal Derangement in Female Adolescents: A Posteroanterior Cephalometric Study

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Case Report: Long-Term Outcome of Class II Division 1 Malocclusion Treated with Rapid Palatal Expansion and Cervical Traction

Abstract

Effects of printing layer thickness and build orientation on the mechanical properties and color stability of 3D-printed clear aligners

The effect of clear aligner and fixed orthodontic treatment on the development of pulp stones: a retrospective observational study

Orthodontic forces and moments of three-bracket geometries

Accuracy and reliability of automated landmark identification and cephalometric measurements on cone beam computed tomography using Invivo software

Accuracy and reliability of Keynote for tracing and analyzing cephalometric radiographs