Multiplicity 2: Multiple treatments and multiple outcomes
In the previous article, I discussed subgroup analyses. In this article and the next, we will consider other aspects of clinical trials that lead to multiplicity of data when multiple…
Two-phase orthodontic treatment of a complex malocclusion: Giving up efficiency in favor of effectiveness, quality of life, and functional rehabilitation?
The interceptive orthodontic treatment of patients with complex dentofacial abnormalities is frequently inefficient and produces less than ideal outcomes. Therefore, postponing therapy to a single-phase surgical-orthodontic approach might be considered…
Predicting tooth-size discrepancy: A new formula utilizing revised landmarks and 3-dimensional laser scanning technology
Introduction The goal of this study was to develop a more accurate formula to forecast tooth-size discrepancies in patients based on not only the size of the whole teeth but…
Information-seeking behavior of adolescent orthodontic patients
Introduction Health-information-seeking behavior is the purposive search for health-related information. The literature contains few articles examining this behavior as it relates to orthodontics; therefore, the aim of this study was…
Microbial contamination of “as received” and “clinic exposed” orthodontic materials
Introduction Our objective was to determine whether components of fixed orthodontic appliances as received from the manufacturers and after exposure to the clinical environment are free from microbial contamination before…
Different manifestations of Class II Division 2 incisor retroclination: A morphologic study
Introduction The aims of this study were to investigate whether there is a different transverse morphologic pattern of dental arches among patients with different manifestations of Class II Division 2…
Early treatment of an ectopic premolar to prevent molar-premolar transposition
Orthodontic treatment is planned on an individual, case-by-case basis after thoroughly considering the patient’s overall facial and dental characteristics, the expected duration of treatment, costs, patient preferences, and the orthodontist’s…
Dens evaginatus: The hornet’s nest of adolescent orthodontics
Dens evaginatus is a rare dental anomaly that occurs during tooth development and results in an abnormal protrusion from the occlusal surface of the affected tooth, often in the area…
Residents’ journal review
Facemask therapy with miniplates for anchorage Lee NK, Yang IH, Baek SH. The short-term treatment effects of face mask therapy in Class III patients based on the anchorage device: miniplates…
The need to know
Your new adult patient, Amy, is remarkably attentive to detail. A self-employed jeweler, she is known in the city for her creative, meticulously executed pieces that command healthy fees. She…
Validating continued competency
The year was 1999. The place was the Stanley Hotel in Estes Park, Colorado. The event was the annual summer retreat of the directors of the American Board of Orthodontics…
Periodontal ligament distraction: Esthetics and occlusal stability at the 2-year follow-up
Dental distraction is an orthodontic tooth movement technique that allows closure of extraction spaces, usually of premolars, in periods from 1 to 3 weeks, by bodily retraction of the canine….
Force levels in complex tooth alignment with conventional and self-ligating brackets
Introduction The force applied to the teeth is a variable of orthodontic treatment that can be controlled. Poor control of the applied force can lead to adverse biologic effects as…
The face: Pictorial atlas of clinical anatomy
Atlases of human anatomy are fascinating volumes. They are particularly appealing and useful to those with special professional interests: figurative artists, biologists, anatomists, and clinicians. In this new anatomic atlas…
Maxillary lateral incisor morphology and palatally displaced canines: A case-controlled cone-beam volumetric tomography study
Introduction The goal of this study was to compare the dimensions of maxillary lateral incisors in subjects with and without palatally displaced canines. Methods An experimental group of 40 patients…
Estimation of periodontal ligament’s equivalent mechanical parameters for finite element modeling
Introduction Young’s modulus (E) and Poisson’s ratio (v) of the periodontal ligament are needed in a finite element analysis for investigating the biomechanical behavior of a tooth, periodontal ligament, and…
Minor differences
Okay, this has happened to almost every orthodontist I know. For 1 reason or another, mom or dad is unhappy with some aspect of the treatment you rendered to junior….
Botulinum neurotoxin type A in the masseter muscle: Effects on incisor eruption in rabbits
Introduction Botulinum neurotoxins are responsible for the paralytic food poisoning, botulism. Commercial formulations such as botulinum neurotoxin type A are increasingly used for various conditions, including cosmetic recontouring of the…
Apical root resorption: The dark side of the root
Introduction The diagnosis of apical root resorption is usually based on routine radiographs. However, these methods are limited because the images reflect the superimposition of the whole root structure and…
Serum PTHrP level as a biomarker in assessing skeletal maturation during circumpubertal development
Introduction Many investigators have studied the cellular organization and the local and systemic factors regulating endochondral bone growth in the growth plate and condylar cartilage. Parathyroid hormone-related protein (PTHrP) and…
