Risk ratio vs odds ratio
In the previous article, we explained that the risk ratio (RR) and the odds ratio (OR) are measures of effect. In this article, we will discuss in more detail the…
Is seeing believing?
One of our readers wrote the following. I routinely use a “light” version of Photoshop to print and digitally store photos of my patients. I also use it to reduce…
Local application of zoledronate for maximum anchorage during space closure
Introduction Orthodontists have used various compliance-dependent physical means such as headgears and intraoral appliances to prevent anchorage loss. The aim of this study was to determine whether 1 local application…
Changes of myelinated nerve and myelin basic protein expression in rats’ periodontal ligaments after experimental tooth movement
Introduction Information about the effect of tooth movement on the myelinated nerve in the periodontal ligament is limited. In this study, we aimed to investigate what responses of the periodontal…
Long-term stability of anterior open-bite closure with bilateral sagittal split osteotomy
Introduction Maxillary impaction and bimaxillary osteotomies are used to treat anterior open-bite malocclusions but can have adverse soft-tissue effects. Correcting an anterior open bite with a single mandibular procedure avoids…
Alveolar bone density changes around miniscrews: A prospective clinical study
Introduction Our objective was to assess the effects of miniscrews on interproximal alveolar bone density and adjacent gingival tissue health. Methods Forty-four titanium miniscrews were inserted between maxillary second premolars…
Skeletal maturation in obese patients
Introduction The objective of this study was to compare skeletal maturation in obese patients and in subjects of normal weight to evaluate the best timing for orthopedic and orthodontic treatment….
Maxillary canine impaction increases root resorption risk of adjacent teeth: A problem of physical proximity
Introduction Our objectives were to investigate the prevalence, resorption location and extent, and potential risk factors for impacted canine-associated root resorption (ICARR) in Chinese patients, who, unlike white patients, have…
The Society of Orthodontic Educators
How many of you reading this editorial have participated in teaching orthodontic residents at an accredited graduate program in the United States or Canada? Many of you participate as part-time…
Residents’ journal review
Removable thermoplastic retainers—a study of wear regimens Jaderberg S, Feldmann I, Engstrom C. Removable thermoplastic appliances as orthodontic retainers—a prospective study of different wear regimens. Eur J Orthod 2012;34:475-9 Achieving…
“Thou shalt not speak ill . . .”
It’s another second-opinion evaluation of a patient who was initially examined by the busiest orthodontist in town. Ten-year-old James comes with his mother upon referral from his neighbor. The recommendation…
Quantification of external root resorption by low- vs high-resolution cone-beam computed tomography and periapical radiography: A volumetric and linear analysis
Introduction The goal of this study was to determine whether cone beam-computed tomography (CBCT) images with resolutions similar to those produced in orthodontic offices have sufficient resolution to accurately quantify…
Treatment of a severe transverse dental arch discrepancy assisted by 3-dimensional planning
This report describes the treatment of a 16-year-old girl with a severe transverse dental arch discrepancy resulting from a mildly constricted maxillary arch and an overexpanded mandibular arch. The patient…
Unilateral delayed eruption of a mandibular permanent canine and the maxillary first and second molars, and agenesis of the maxillary third molar
Delayed tooth eruption can affect the accuracy of orthodontic diagnosis and treatment planning and could delay overall treatment. A girl, aged 7 years 4 months, who had unilateral delayed eruption…
Substitution of impacted canines by maxillary first premolars: A valid alternative to traditional orthodontic treatment
A 13-year-old girl came with the chief complaint of an unesthetic dental appearance. Her maxillary canines were bilaterally impacted. Treatment included extraction of the maxillary canines and the mandibular second…
Validity, reliability, and reproducibility of linear measurements on digital models obtained from intraoral and cone-beam computed tomography scans of alginate impressions
Introduction Digital 3-dimensional models are widely used for orthodontic diagnosis. The aim of this study was to assess the validity, reliability, and reproducibility of digital models obtained from the Lava…
Orthodontic uprighting of severely impacted mandibular second molars
The prevalence of impacted second molars is low, varying from 0% to 2.3%. The etiology of an impaction can involve systemic, local, and periodontal factors, as well as a developmental…
Combined degenerative and regenerative remodeling responses of the mandibular condyle to experimentally induced disordered occlusion
Introduction The purposes of this research were to investigate the long-term responses of mandibular condylar cartilage to experimentally induced disordered occlusion and to evaluate changes in the expression of the…
Lingual retainers bonded without liquid resin: A 5-year follow-up study
Introduction The aim of this in-vivo study study was to evaluate the effect of excluding the liquid resin component of a composite bonding product that is based on bisphenol A…
Time-related changes in salivary levels of the osteotropic factors sRANKL and OPG through orthodontic tooth movement
Introduction In this study, we aimed to determine whether the variations in salivary concentrations of soluble receptor activator of nuclear factor kappa B ligand (sRANKL) and osteoprotegerin (OPG), and their…
