Case-control studies: Part 1
In a case-control study, a group of subjects from a specified study population who have the outcome of interest (the cases)—eg, patients with temporomandibular joint (TMJ) pain—is identified, and a…
Effect of bracket slot and archwire dimensions on anterior tooth movement during space closure in sliding mechanics: A 3-dimensional finite element study
Introduction It has been found that controlled movement of the anterior teeth can be obtained by attaching a certain length of power arm onto an archwire in sliding mechanics. However,…
Disparaging disparagement
Many of us worry about how to handle disparaging comments or posts made by disgruntled patients about us or our office on the Internet. Although there are many ways to…
Interlot variations of transition temperature range and force delivery in copper-nickel-titanium orthodontic wires
Introduction The manufacturing process for copper-nickel-titanium archwires is technique sensitive. The primary aim of this investigation was to examine the interlot consistency of the mechanical properties of copper-nickel-titanium wires from…
Efficacy of a fluoride-releasing orthodontic primer in reducing demineralization around brackets: An in-vivo study
Introduction A new, highly filled primer is currently marketed as a fluoride delivery system effective in reducing white spot lesions in orthodontic patients. However, no studies in the literature support…
Mandibular posterior anatomic limit for molar distalization
Introduction The purpose of this study was to investigate the mandibular posterior anatomic limit for molar distalization. Methods Three-dimensional computed tomography scans were obtained on 34 adults with a skeletal…
Cervical vertebral bone mineral density changes in adolescents during orthodontic treatment
Introduction The cervical vertebral maturation (CVM) stages have been used to estimate facial growth status. In this study, we examined whether cone-beam computed tomography images can be used to detect…
Effect of carbon dioxide laser irradiation on enamel surface microhardness around orthodontic brackets
Introduction In this study, we aimed to determine the effect of carbon dioxide laser irradiation on enamel surface microhardness. Methods In this single-blind interventional clinical trial, 16 patients needing at…
Treatment effectiveness of Fränkel function regulator on the Class III malocclusion: A systematic review and meta-analysis
Introduction The Fränkel function regulator III appliance (FR-3) has been used to correct Class III malocclusions for many years; however, its treatment effectiveness is controversial. In this study, we aimed…
Virtual techniques for designing and fabricating a retainer
The purpose of this article was to report a procedure for using 3-dimensional cone-beam computed tomography imaging, computer-aided design, computer-aided manufacturing, and rapid prototyping to design and produce a retainer….
Microelectronic wear-time documentation of removable orthodontic devices detects heterogeneous wear behavior and individualizes treatment planning
Introduction The aim of this study was to investigate whether microelectronic wear-time documentation can contribute to individualized orthodontic management. Methods The wear times and behaviors of 281 patients undergoing orthodontic…
Downregulation of Wnt causes root resorption
Introduction There are multiple causes of external root resorption, but absent a disease state, it is most often observed when excessive physical force is used during orthodontic treatment. Even without…
Residents’ journal review
Nonsurgical maxillary expansion: a meta-analysis Zhou Y, Long H, Ye N, Xue J, Yang X, Liao L, et al. The effectiveness of non-surgical maxillary expansion: a meta-analysis. Eur J Orthod 2014;36:233-42…
What values most?
You enjoy teaching in a nearby orthodontic specialty program. One morning, your department chair calls you up to her office and asks whether you would consider heading the department’s admissions…
Ankylosed maxillary incisor with severe root resorption treated with a single-tooth dento-osseous osteotomy, vertical alveolar distraction osteogenesis, and mini-implant anchorage
Dentoalveolar ankylosis interferes with the vertical growth of the alveolar process, which can lead to an open bite, an unesthetic smile, and occlusal disharmony. This case report presents a new…
Author’s response
Although the writer has the right to choose the title and content of his letter, it seems as if the purpose of the letter is not to allow the authors…
Statistical errors in a recent article: Sella turcica in patients with type 1 diabetes
I read with interest the article by Bavbek and Dincer (Dimensions and morphologic variations of sella turcica in type 1 diabetic patients. Am J Orthod Dentofacial Orthop 2014;145:179-87). Although it…
Maxillary arch width and buccal corridor changes with orthodontic treatment
With great interest and respect, we read the research reported by Anna H. Meyer et al (Meyer AH, Woods MG, Manton DJ. Maxillary arch width and buccal corridor changes with orthodontic…
Author’s response
Thank you to Drs Yan and Tian for the comments and question regarding Part 2 of our work regarding arch-width and buccal corridor changes. Drs Yan and Tian suggested that…
Authors’ response
We are grateful to the Dr Todd Connell for his careful reading and relevant comment on our article. We agree that there was a miswriting in the Abstract and the…
