Correlation and linear regression
In the next series of articles, I will discuss correlation and linear regression. Correlation indicates whether there is any association between 2 quantitative variables and the strength of that association….
Orthodontics
Open-bite treatment with vertical control and tongue reeducation
An open-bite malocclusion with a tongue-thrust habit is a challenging type of malocclusion to correct. A 12-year-old girl came for orthodontic treatment with a severe anterior open bite, extruded posterior…
University clinic and private practice treatment outcomes in Class I extraction and nonextraction patients: A comparative study with the American Board of Orthodontics Objective Grading System
Introduction The aim of this study was to compare treatment outcomes in university vs private practice settings with Class I patients using the American Board of Orthodontics Objective Grading System….
It’s irrelevant
In the Marx brothers movie Duck Soup , during the trial scene, Chico asks, “What has a trunk but no key, weighs 2000 pounds, and can be found in a…
Caries prevention during orthodontic treatment: In-vivo assessment of high-fluoride varnish to prevent white spot lesions
Introduction Our objective was to evaluate the efficacy of a fluoridated varnish in preventing white spot lesions in patients with fixed appliances. A laser-induced fluorescence device was used to determine…
Facial morphology in children and adolescents with juvenile idiopathic arthritis and moderate to severe temporomandibular joint involvement
Introduction The aims of this study were to (1) assess lateral facial morphology in children and adolescents with juvenile idiopathic arthritis and moderate to severe temporomandibular joint (TMJ) involvement, (2)…
Novel 3-dimensional analysis to evaluate temporomandibular joint space and shape
Introduction The purpose of this study was to present and validate a novel semiautomated method for 3-dimensional evaluation of the temporomandibular joint (TMJ) space and condylar and articular shapes using…
In-vitro bond strengths and clinical failure rates of metal brackets bonded with different light-emitting diode units and curing times
Introduction The purpose of this study was to compare the clinical failure rates and the in-vitro bond strengths of metal brackets bonded with different light-emitting diode (LED) devices and curing…
Streptococcus mutanscounts in patients wearing removable retainers with silver nanoparticles vs those wearing conventional retainers: A randomized clinical trial
Introduction The rough surface of Hawley removable appliances provides an environment for plaque accumulation, leading to enamel demineralization. The aim of this study was to evaluate the effect of silver…
Impact of orthosurgical treatment phases on oral health–related quality of life
Introduction In this cross-sectional study, we investigated the impact of the orthosurgical treatment phases on the oral health–related and condition-specific quality of life (QoL) of patients with dentofacial deformities. Methods…
Diagnostic accuracy and measurement sensitivity of digital models for orthodontic purposes: A systematic review
Introduction Our objective was to assess the accuracy, validity, and reliability of measurements obtained from virtual dental study models compared with those obtained from plaster models. Methods PubMed, PubMed Central,…
Residents’ journal review
Surgery first for orthognathic patients? Huang CS, Hsu SS, Chen YR. Systematic review of the surgery-first approach in orthognathic surgery. Biomed J 2014;37:184-90 Traditionally, comprehensive orthodontic treatment for alignment of…
Is it for real?
You are honored to receive an appointment to your alma mater’s search committee to identify another full-time faculty member. Clinical research has continued to intrigue you since completion of your…
Authors’ response
We believe that it possible to argue a case objectively, without the need to descend to disparaging, gratuitous, and ad hominem remarks regarding different views held by another person. We…
Misleading article on palatally displaced canines
For a while, I was reluctant to submit a letter challenging another of Dr Adrian Becker’s attempts to restore some dignity to the embattled “guidance theory,” his personal view on…
Maxillary changes with bone-borne surgically assisted rapid palatal expansion: A prospective study
Introduction The aim of this prospective study was to analyze the postexpansion positional changes of the maxillary halves and their initial stability after transpalatal distraction with a bone-borne distractor and…
Intrusion method for a single overerupted maxillary molar using only palatal mini-implants and partial fixed appliances
Mandibular first molars are among the most frequently missing teeth in the adult dentition. As a result, the maxillary first molars are frequently overerupted. Conventional approaches to correct this undesirable…
Cephalometric configuration of the occlusal plane in patients with anterior open bite
Introduction This study was performed to investigate the cephalometric configuration of the occlusal plane in patients with anterior open bite. Methods Of 61 subjects with open bite (overbite ≥3.75 mm) who…
Linear regression
In the previous article, I introduced the concepts of correlation and regression. In the next articles, I will discuss how we can apply linear regression in orthodontic research with an…
