Lucy fell from a tree and plunged 40 feet to her death
This past August, most of the major news outlets reported the seemingly sad news that Lucy fell from a tree and plunged 40 feet to her death. This was news…
Canine-lateral incisor transposition: Controlling root resorption with a bone-anchored T-loop retraction
A 12-year-old girl presented with a Class II Division 1 malocclusion, complicated by a complete transposition of the maxillary left canine into the position normally occupied by the left lateral…
Defining the location of the dental midline is critical for oral esthetics in camouflage orthodontic treatment of facial asymmetry
When considering camouflage orthodontic treatment of a malocclusion associated with significant facial asymmetry, it is important to define the location of the dental midline. The patient, a 19-year-old Japanese woman,…
Henri Petit, 1928-2015
Our specialty lost a major contributor to clinical orthodontics and craniofacial biology with the passing of Dr Henri Petit in Nantes, France, at 87 years of age. His application of the…
3D imaging and dentistry. From multiplanar cephalometry to guided navigation in implantology
The authors and editors have provided orthodontists a reference textbook with an overview of 3D volumetric imaging as it relates to clinical orthodontics, 3D technology, and all fields of dentistry….
Effects of zygoma-gear appliance for unilateral maxillary molar distalization: A prospective clinical study
Introduction The aim of the study was to evaluate the dentoskeletal effects of the zygoma-gear appliance used for unilateral maxillary molar distalization in patients with Class II subdivision malocclusion. Methods This prospective…
Serum and urine insulin-like growth factor-1 as biochemical growth maturity indicators
Introduction Biochemical markers are agents directly involved in bone growth and remodeling and can be quantitatively evaluated from various biologic fluids. The aim of this study was to assess the…
Accuracy and mechanical properties of orthodontic models printed 3-dimensionally from calcium sulfate before and after various postprinting treatments
Introduction Dental models fabricated with 3-dimensional printing technologies are revolutionizing the practice of orthodontics, but they generally comprise polymeric materials that may not be suitable for certain applications, such as…
Simplifying optimal tooth-size calculations and communications between practitioners
The purpose of this article is to present a simple method for determining the optimal sizes of anterior teeth. This is needed because of the frequency of anomalous and missing…
The chi-square test for trend
We have already discussed the chi-square (χ 2 ) test and 2 × 2 tables (known as cross-tabulation) to test the association between 2 categorical variables where the distribution of 1 varies…
