Multiplicity 3: Repeated measures
In the previous 2 articles, I discussed multiplicity in the context of subgroup analyses, multiple treatments, and multiple outcomes. In this article, I will discuss multiplicity in the context of repeated…
Orthodontics
Stability of quad-helix/crib therapy in dentoskeletal open bite: A long-term controlled study
Introduction The purpose of this study was to evaluate the long-term stability of quad-helix/crib treatment in subjects with dentoskeletal open bite. Methods Twenty-eight subjects (11 boys, 17 girls; mean age, 8.2 ± 1.3…
Influence of maxillary incisor edge asymmetries on the perception of smile esthetics among orthodontists and laypersons
Introduction Our objective was to determine the perception of smile esthetics among orthodontists and laypeople with respect to asymmetries on the maxillary incisor edges in a frontal smile analysis. Methods…
Factors related to the rate of orthodontically induced tooth movement
Introduction The purpose of this study was to investigate the variations of orthodontically induced tooth movement in the maxillary and mandibular arches between patients and the factors such as age,…
Intraoral distalizer effects with conventional and skeletal anchorage: A meta-analysis
Introduction The aims of this meta-analysis were to quantify and to compare the amounts of distalization and anchorage loss of conventional and skeletal anchorage methods in the correction of Class…
Residents’ journal review
A systematic review of vertical stability for surgical orthodontic treatments Solano-Hernández B, Antonarakis GS, Scolozzi P, Kiliaridis S. Combined orthodontic and orthognathic surgical treatment for the correction of skeletal anterior…
The pattern of facial skeletal growth and its relationship to various common indexes of maturation
Introduction Sequential stages in the development of the hand, wrist, and cervical vertebrae commonly are used to assess maturation and predict the timing of the adolescent growth spurt. This approach…
The problem with predoctoral orthodontic education
I attended a recent conference sponsored by the American Association of Orthodontists (AAO) to encourage young orthodontists to become more involved in leadership in the national association. Among the attendees…
Class II surgical-orthodontic treatment of a patient with severe coronary disease: 5 years of follow-up
This case study describes the retreatment and long-term follow-up care of a patient with a medical history of 2 heart surgeries and a Class II malocclusion that included a severe anteroposterior…
Accuracy of miniscrew surgical guides assessed from cone-beam computed tomography and digital models
Introduction Several methods are available to enhance the precision of miniscrew placement. The use of surgical guides based on cone-beam computed tomography is indicated especially in patients with risky or…
Informed consent or informed refusal?
Karen is an anesthesiology resident and your last patient of the week. Her chief concern is the irregularity of her maxillary incisors. She describes her experience of prolonged, comprehensive orthodontic…
Bonded lingual retainers
We read the article “Lingual retainers bonded without liquid resin: A 5-year follow-up study” in the January 2013 issue of the AJO-DO with great interest (Tang ATH, Forsberg CM, Andlin-Sobocki…
Authors’ response
Thank you for conveying these questions to us. We believe that questions are the primary driving force of scientific progress. Two concerns are related to possible bias in our study…
Esthetic evaluation of dynamic smiles with attention to facial muscle activity
Introduction Numerous studies of smile esthetics have used still photos. Photos, however, do not capture the dynamics of a smile, an element that can contribute to overall smile esthetics. In…
Skeletal and soft-tissue incidental findings on cone-beam computed tomography images
Cone-beam computed tomography provides orthodontists with 3-dimensional images of the craniofacial region and valuable information for diagnosis and treatment planning of craniofacial or dental anomalies. However, a narrow focus on…
Periodontal microstructure change and tooth movement pattern under different force magnitudes in ovariectomized rats: An in-vivo microcomputed tomography study
Introduction The purpose of this study was to evaluate the dynamic changes in the periodontal microstructure and the molar displacement pattern during orthodontic tooth movement in ovariectomized rats. Methods Twenty…
Pharyngeal airway characterization in adolescents related to facial skeletal pattern: A preliminary study
Introduction The objective of this study was to characterize the volume and the morphology of the pharyngeal airway in adolescent subjects, relating them to their facial skeletal pattern. Methods Fifty-four…
Interdisciplinary approach for increasing the vertical dimension of occlusion in an adult patient with several missing teeth
This case report describes the interdisciplinary treatment of a 39-year-old man with several missing teeth (including both maxillary lateral incisors), Class II malocclusion, deep overbite, and significant mandibular midline deviation….
Nonsurgical correction of a Class III malocclusion in an adult by miniscrew-assisted mandibular dentition distalization
This article reports the successful use of miniscrews in the mandible to treat a 20-year-old Mongolian woman with a chief complaint of anterior crossbite. The patient had a skeletal Class…
Review of randomized controlled trials: Issues to consider when designing a trial
In this article, I will provide a short review of the fundamentals of a randomized controlled trial (RCT) before I move on to observational studies. It will be in a…
