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Orthodontic force causes an injury to and subsequent degradation of the attachment apparatus, thus leading to the transposition of the tooth. The gingiva, however, is compressed and sometimes becomes hypertrophic with tooth movement and often shrinks after treatment. To study the effect of force on the gingiva, we applied orthodontic force in dogs and(More)
OBJECTIVES To evaluate the reliability of a new technique for measuring 3D-scanned orthodontic cast models with cross-section planes using teledent, a new software, developed at Technion - for the purpose of this research. EXPERIMENTAL VARIABLE Thirty orthodontic plaster models were divided into three equal groups according to severity of teeth crowding.(More)
With the increasing demand for adult orthodontics, a growing need arises to bond attachments to porcelain surfaces. Optimal adhesion to a porcelain surface should allow orthodontic treatment without bond failure but not jeopardize porcelain integrity after debonding. In this study, 90 glazed porcelain facets were divided into three groups according to(More)
The number of adults requesting orthodontic treatment is constantly growing, with a resultant increase in the need to bond brackets to porcelain restorations. Because adults often favor more esthetic ceramic brackets, it is important to evaluate the bond strength of ceramic to porcelain restorations and the integrity of the porcelain surface after(More)
Orthodontic tooth movement is brought about by prolonged application of force on the attachment apparatus. This results in cellular and extracellular changes within the periodontium. As shown in numerous studies, tooth movement is achieved after the remodeling of alveolar bone and the response of the periodontal ligament to the mechanical force. Although(More)
This study evaluated the effect of sustained-release chlorhexidine varnish on orthodontic patients. Ten children, ages 10 to 16 years, participated. Bacterial levels of Streptococcus mutans and Actinomyces viscosus and total counts were evaluated in sputum samples. These counts were evaluated at 4 stages: before orthodontic treatment, at least 2 weeks after(More)
BACKGROUND Characterization of periodontal ligament (PDL) fibroblast proteome is an important tool for understanding PDL physiology and regulation and for identifying disease-related protein markers. PDL fibroblast protein expression has been studied using immunological methods, although limited to previously identified proteins for which specific(More)
This study evaluated the static friction force created between archwires and "reduced-friction" brackets during sliding mechanics. Five different brands of "reduced-friction" brackets were used: group A: NuEdge (TP Orthodontics, LaPorte, Ind); group B: Discovery (Dentaurum, Ispringen, Germany); group C: Synergy (Rocky Mountain Orthodontics, Denver, Colo);(More)
The ability of elastic fibers to respond to mechanical stimuli suggests that they play a central role in physiological adaptation to external stimuli including application of orthodontic force. The purpose of this study was to examine the effect of external pressure simulating orthodontic force on tropoelastin gene expression in cultured human periodontal(More)
OBJECTIVES/HYPOTHESIS To determine the effect of mouth breathing during childhood on craniofacial and dentofacial development compared to nasal breathing in malocclusion patients treated in the orthodontic clinic. STUDY DESIGN Retrospective study in a tertiary medical center. METHODS Clinical variables and cephalometric parameters of 116 pediatric(More)