Cluster-randomized controlled trials: Part 1
In certain situations, it is not possible to use patients as the randomization unit, so we must randomize to clusters (groups) consisting of a few, several, or many subjects who…
Orthodontics
Accelerated decompensation of mandibular incisors in surgical skeletal Class III patients by using augmented corticotomy: A preliminary study
Introduction Our objectives were to evaluate the amount of decompensation of the mandibular incisors and the change of periodontal support around them after corticotomy with bone augmentation before orthognathic surgery….
Unilateral maxillary molar distalization with zygoma-gear appliance
The aim of this study was to present the orthodontic treatment of a 15-year-old boy with a unilateral maxillary molar distalization system, called the zygoma-gear appliance. It consisted of a…
I’m sorry, so sorry
So starts Brenda Lee’s hit song from 1960. I know, some of you reading this weren’t even born then, but the words are just as true, just as powerful, and…
Motivation for orthodontic treatment investigated with Q-methodology: Patients’ and parents’ perspectives
Introduction Motivation and cooperation are vital components of orthodontic treatment if a good outcome is to be achieved. In this study, we used Q-methodology to investigate motivating factors among adolescents…
Cortical bone and ridge thickness of hyperdivergent and hypodivergent adults
Introduction The purpose of this study was to assess differences in dentoalvolar cortical bone thickness between hyperdivergent and hypodivergent young adults. Methods Pretreatment cone-beam computed tomography images of 57 patients,…
Treatment and stability of Class II Division 2 malocclusion in children and adolescents: A systematic review
Introduction Our objectives were to evaluate the evidence with regard to the effectiveness and stability of orthodontic treatment interventions for Class II Division 2 malocclusion in children and adolescents. This…
Effects of thread shape on the pullout strength of miniscrews
Introduction The aim of this study was to determine the effects of variations in thread shape on the axial pullout strength of orthodontic miniscrews. Methods A total of 35 miniscrews,…
Mandibular dimensions of subjects with asymmetric skeletal Class III malocclusion and normal occlusion compared with cone-beam computed tomography
Introduction The purpose of this study was to use cone-beam computed tomography to compare mandibular dimensions in subjects with asymmetric skeletal Class III malocclusion and those with normal occlusion. Methods…
Residents’ journal review
Statistical modeling of lip movement Popat H, Zhurov AI, Toma AM, Richmond S, Marshall D, Rosin PL. Statistical modelling of lip movement in the clinical context. Orthod Craniofac Res 2012;15:92-102…
When less might be more
Your treatment of Susan, your daughter’s 13-year-old classmate, finished beautifully. You had predicted the 2 mm diastemata that remains distal to the undersized maxillary lateral incisors, so the family was…
You might miss something obvious
One of my best referring general dentists once asked me to evaluate his 34-year-old receptionist. She did not have a complicated malocclusion, just a few malaligned teeth and a slightly…
Author’s response
Thank you for your letter and your interest in our article. The first question raised, regarding the amount of crowding present before treatment, might not add a significant value to…
Question about relapse of corrected deepbites
I would like to congratulate Dr Derek Pollard et al for their article in the April 2012 issue (Pollard D, Akyalcin S, Wiltshire WA, Rody WJ Jr. Relapse of orthodontically corrected…
Online only abstract
Unilateral maxillary molar distalization with zygoma-gear appliance Dogan Kilkis, Mehmet Bayram, Mevlut Celikoglu, and Metin Nur. Am J Orthod Dentofacial Orthop 2012;142:e1-e7 The aim of this study was to present…
Severe complication of a bonded mandibular lingual retainer
Bonding a flexible spiral wire retainer to the lingual surfaces of all 6 anterior mandibular teeth is a commonly used type of retention. Complications are rare but can be serious…
Three-dimensional evaluation of changes in lip position from before to after orthodontic appliance removal
Introduction Our objectives were to develop a reproducible method of superimposing 3-dimensional images for measuring soft-tissue changes over time and to use this method to document changes in lip position…
Correlation of the arch forms of male and female subjects with those of preformed rectangular nickel-titanium archwires
Introduction This investigation was carried out to correlate the normal arch forms of male and female subjects derived mathematically by the beta function with commercially available preformed rectangular nickel-titanium archwires….
Tooth separation: A risk-free procedure?
This article reports the case of a 12-year-old patient with tooth extrusion, pain, gingival bleeding, and localized periodontitis near the maxillary second premolar. Despite probing and radiographic examination, it was…
Impaction of both maxillary central incisors and a canine
This case report describes the treatment of a 14-year-old adolescent patient who had 2 impacted maxillary central incisors with distoangular root dilacerations. He also had an impacted maxillary left canine,…
