نتایج جستجو برای: fixed orthodontic appliances
تعداد نتایج: 220727 فیلتر نتایج به سال:
BACKGROUND The objective of this study was to evaluate long-term clinical and bacterial effects of using 6 g of xylitol per day for 3 months on patients with full fixed orthodontic appliances. METHODS The study was a pilot clinical trial that included 41 subjects who were undergoing orthodontic treatment. The subjects were randomly divided into three groups. Group A received xylitol chewing g...
The purpose of this paper is to assess the added risk pose by radio frequency (RF) induced heating near fixed orthodontic appliances in patients undergoing MRI examination at 3 Tesla. Three of the most commonly used types of fixed orthodontic appliances: Palatal expander (Hyrax) Lingual Bar and Multibracket-/-band braces were investigated using a head phantom and positioned to match the in-vivo...
statement of problem: fixed orthodontic appliances can interfere with removing bacterial plaques from dental surfaces which can ultimately lead to white spot formation. purpose: the aim of this study was to evaluate the quantity of white spots and areas of decalcification following fixed orthodontic treatment. materials and methods: a total of 100 patients undergoing or scheduled for fixed orth...
Fixed appliances are commonly used in managing early orthodontic problems. Despite their widespread use, they have the potential to impinge on the soft tissues, interfere with the eruption of adjacent teeth and become dislodged or broken. These two case reports present the poor outcomes of fixed appliance treatments if the patient fails to attend follow-up appointments. A successful outcome of ...
Orthodontic appliances often cause oral diseases such as dental caries and gingivitis due to the attachment of an oral biofilm. However, there are few reliable methods to remove the biofilm from the orthodontic appliances. The aim of this study was to investigate the effects of microbubbled water on the removal of biofilms made with Streptococcus mutans or Candida albicans on orthodontic applia...
OBJECTIVES The aim of the systematic literature review is to update the evidence for the prevention of white spot lesions, using materials containing fluoride and/or casein phosphopeptide-amorphous calcium phosphate during and after treatment with fixed orthodontic appliances. MATERIAL AND METHODS Information search for controlled studies on humans published between January 2008 and February ...
OBJECTIVE The aim of this systematic review was to assess the occlusal outcome and duration of fixed orthodontic therapy from clinical trials in humans with the Objective Grading System (OGS) proposed by the American Board of Orthodontics. METHODS Nine databases were searched up to October 2016 for prospective/retrospective clinical trials assessing the outcomes of orthodontic therapy with fi...
INTRODUCTION Until recently, much of the orthodontic biomechanics literature was restricted to 2-dimensional experimental studies and, more recently, to assumption-based 3-dimensional computer modeling. There is little evidence in the literature regarding 3-dimensional experimental measurements and analysis of orthodontic force systems. METHODS The purpose of this study was the design, constr...
The fixed or removable orthodontic appliances mostly use intrinsic force to move teeth. is exerted by the appliance and dissipated against teeth supporting structures. skeletal Class II correctors evolved from various modifications of original activator. These reposition mandible in downward forward direction, activating attached associated muscle. resultant thus created transmitted not only bu...
INTRODUCTION This study compared the dentoalveolar and skeletal effects on Class II malocclusions of the distal jet with concurrent full fixed appliances and the pendulum appliance both followed by fixed appliances. METHODS The 2 samples each consisted of 32 subjects (19 girls and 13 boys) with mean ages at the start of treatment of 12 years 3 months in the distal jet group and 12 years 6 mon...
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