Alveolar cortical plate changes associated with incisor retraction and its influence on the limits of orthodontic tooth movement.

Objective: The extent to which the modelling behaviour of the anterior alveolus limits tooth movement remains unclear. Will the labial and lingual cortical plates model as incisors retract, or will they remain unchanged, therefore limiting the extent of possible tooth movement?

Setting And Sample Population: Pre- and post-treatment lateral cephalometric radiographs of 29 bimaxillary protrusive patients of South Korean descent were examined. Treatment consisted of two premolar extractions in one or both arches with en masse retraction of the incisors using miniscrew anchorage.

Bimaxillary transverse constriction in adults: Short-term follow-up of non-surgical arch expansion.

Objective: Concurrent maxillary and mandibular expansion is a treatment option for patients with maxillary and mandibular transverse constriction. These patients do not present with crossbite but require expansion due to narrow arches and associated crowding, dark buccal corridors and decreased anterior arch contour. The objective of the study is to first establish Bimaxillary Transverse Constriction as an under-recognized malocclusion and second to evaluate whether in adults the maxillary and mandibular arches can be successfully and safely expanded.

Idiopathic Condylar Resorption: What Should We Do?

Idiopathic condylar resorption (ICR), alternatively called progressive condylar resorption, is an uncommon aggressive form of degenerative disease of the temporomandibular joint seen mostly in adolescent and young women. ICR occurring before the completion of growth results in a shorter mandibular condyloid process, ramus and body, compensatory growth at the gonial angle and coronoid process, as well as an increase in anterior facial vertical dimension. Management options discussed include oral appliances, orthodontics, medical management, orthognathic surgery with and without disc repositioning, and alloplastic temporomandibular joint replacement.

Quantitative measures of gingival recession and the influence of gender, race, and attrition.

Background: Gingival recession in dentitions with otherwise healthy periodontium is a common occurrence in adults. Recession is clinically measured using a periodontal probe to the nearest millimeter. The aim of this study is to establish quantitative measures of recession, the clinical crown height, and a new measure the gingival margin-papillae measurement.

Nonextraction treatment of a Class II deepbite malocclusion with severe mandibular crowding: visualized treatment objectives for selecting treatment options.

A 14-year-old girl with Class II Division 2 malocclusion and a severe deepbite, retroclined incisors in both arches, and extreme crowding in the mandibular arch was treated by orthodontic residents, with supervision of the clinical faculty, at the University of Illinois at Chicago. A visualized treatment objective (VTO) was developed for the patient and used to select the best treatment alternative.

Bimaxillary dentoalveolar protrusion: traits and orthodontic correction.

A group of 48 ethnically diverse patients with bimaxillary protrusion was used to study the pretreatment cephalometric traits of this malocclusion and the effect of orthodontic correction. All patients were treated with four premolar extractions and retraction of the anterior teeth. Pre- and posttreatment lateral cephalograms were evaluated using a series of 18 linear and angular measurements, and the effect of orthodontic correction was determined using paired t-tests.