Confounding
Observational studies in orthodontics, such as cohort or case-control studies that examine the influence of risk factors on the occurrence of malocclusions, are especially prone to confounding, as are similar…
Orthodontics
Physical properties of root cementum: Part 24. Root resorption of the first premolars after 4 weeks of occlusal trauma
Introduction In orthodontics, adding restorative materials on occlusal or lingual surfaces is a common method to create a mini-biteplane to increase patients’ vertical dimension temporarily to facilitate several treatment procedures….
Practicing what you preach—or not
Is it okay for an expert witness to say that the standard of care is X, but, personally, I do Y? Smethers v. Campion , 1 CA-CV 04-0117, Dept. C…
Accidental debondings: Buccal vs fully individualized lingual multibracket appliances
Introduction The aim of this study was to retrospectively assess the frequency and localizations of bond failures (BFs) in patients treated with either lingual (TOP-Service für Lingualtechnik GmbH, a 3M…
Bony adaptation after expansion with light-to-moderate continuous forces
Introduction The purpose of this study was to evaluate the biologic response of dentoalveolar bone to archwire expansion with light-to-moderate continuous forces. Methods With a split-mouth experimental design, the maxillary…
Comparison of orthodontic treatment outcomes in nonextraction, 2 maxillary premolar extraction, and 4 premolar extraction protocols with the American Board of Orthodontics objective grading system
Introduction The aim of this study was to compare the orthodontic clinical outcomes of 2 maxillary premolar extraction, 4 premolar extraction, and nonextraction treatment protocols. Methods The sample for this…
Effect of bone-borne rapid maxillary expanders with and without surgical assistance on the craniofacial structures using finite element analysis
Introduction The aim of this study was to analyze stress distribution and displacement of the craniofacial structures resulting from bone-borne rapid maxillary expanders with and without surgical assistance using finite…
Stability of surgically assisted rapid palatal expansion with and without retention analyzed by 3-dimensional imaging
Introduction Surgically assisted rapid palatal expansion (SARPE) is the procedure of choice for treatment of adults with transverse maxillary deficiency greater than 7 mm. There is no consensus about the…
Quantitative analysis of changes in salivary mutans streptococci after orthodontic treatment
Introduction The purpose of this study was to analyze the initial changes in salivary mutans streptococci levels after orthodontic treatment with fixed appliances. Methods Our subjects consisted of 58 adults….
Comparative assessment of alignment efficiency and space closure of active and passive self-ligating vs conventional appliances in adolescents: A single-center randomized controlled trial
Introduction The aim of this study was to compare the time to initial alignment and extraction space closure using conventional brackets and active and passive self-ligating brackets. Methods One hundred…
Residents’ journal review
Class I extraction vs nonextraction predictors Konstantonis D, Anthopoulou C, Makou M. Extraction decision and identification of treatment predictors in Class I malocclusions. Prog Orthod 2013;14:47 The decision to extract…
Temporary skeletal anchorage devices: The case for miniplates
The desire to have complete control over anchorage is no doubt universal among orthodontists. About 100 years after orthodontists first started using tooth-borne anchorage for orthodontic treatment, temporary skeletal anchorage…
Temporary skeletal anchorage devices: The case for miniscrews
According to Newton’s Third Law, for every action, there is an equal and opposite reaction. Orthodontists must acknowledge this law every time they try to move teeth. Simply stated, every…
Is ignorance bliss?
Sandy is a lovely 13-year-old patient and your daughter’s classmate. Your initial examination revealed a left Class II relationship with peg-shaped lateral incisors. The retained maxillary left deciduous canine lies…
Correction
Şar Ç, Şahinoğlu Z, Arman Özçırpıcı A, Uçkan S. Dentofacial effects of skeletal anchored treatment modalities for the correction of maxillary retrognathia. Am J Orthod Dentofacial Orthop. 2014;145:41-54. Dentofacial effects…
Author’s response
I would like to thank Drs Zeyun Tian and Yinqiu Yan for their comments and interest in our research article entitled “Tooth mineralization stages as a diagnostic tool for assessment…
Tooth mineralization stages as a diagnostic tool for assessment of skeletal maturity
We read with interest the article by Surendran and Thomas (Tooth mineralization stages as a diagnostic tool for assessment of skeletal maturity. Am J Orthod Dentofacial Orthop 2014;145:7-14). First and…
Authors’ response
We thank Dr Wu for his interest in our article and for providing the opportunity to clarify the concerns regarding the methods used in this study. Regarding the distribution of…
Oral epithelial cell reaction and Invisalign treatment
I read the article “Oral epithelial cell reaction after exposure to Invisalign plastic material” in the January issue (Premaraj T, Simet S, Beatty M, Premaraj S. Am J Orthod Dentofacial…
Spontaneous improvement of gingival recession after correction of tooth positioning
A 30-year-old woman sought treatment for malpositioned mandibular incisors; the roots were positioned outside the alveolar bone, related to severe localized gingival recession. She had been previously treated orthodontically and…
