نتایج جستجو برای: orthodontic tooth movement

تعداد نتایج: 254265  

Amirhossein Mirhashemi, Elahe Ansari, Mohammad Sadegh Ahmad Akhoundi, Mohmmad Javad Khaarazifard, Nafiseh Momeni, Sedigheh Sheikhzadeh, Yasaman Kheirandish,

Background and Aim: Considering the effect of alcohol on bones, consuming alcohol may have some consequences on orthodontic tooth movement. The present study was aimed to evaluate the effect of alcohol consumption on bone density and orthodontic tooth movement in rats. Materials and Methods: In this experimental study, thirty rats were divided into three groups and underwent 3 weeks of diffe...

Journal: :Journal of endodontics 2005
Paula A Villa Giovanni Oberti Cesar A Moncada Olga Vasseur Alejandro Jaramillo Diego Tobón Jaime A Agudelo

Pulpitis, external root resorption, and pain may be experienced during orthodontic movement. The use of nonsteroidal anti-inflammatory drugs (NSAIDs) has been suggested to control these changes. The purpose of this study was to observe pulp-dentinal reactions, root resorption, tooth pain, and tooth movement after the application of a 4-ounce intrusive orthodontic force to human maxillary first ...

Journal: :journal of dentistry, tehran university of medical sciences 0
kazem dalaie assistant professor, department of orthodontics, school of dentistry, shahid beheshti university of medical sciences, tehran, iran roya hamedi postgraduate student, department of orthodontics, school of dentistry, shahid beheshti university of medical sciences, tehran, iran mohammadjavad kharazifard statistical advisors, dental research center, dentistry research institute, tehran university of medical sciences, tehran, iran mina mahdian dentist mehrdad bayat dentist

o bjectives: one major drawback of orthodontic treatment is its long duration due to slow tooth movement and the pain at the onset of treatment following application of forces. there is controversy regarding the efficacy of laser for decreasing the treatment time and pain of orthodontic treatment. the purpose of this study was to investigate the effect of low level diode laser on the rate of or...

ژورنال: مجله دندانپزشکی 2010
حسینی, محمد هاشم, محمودزاده دربندی, مجید, کمالی, عباس,

Background and Aims: Lasers with different characteristics have been used to stimulate orthodontic tooth movements and to inhibit the pain during tooth movements. Considering the contradictory finding in this respect, the effect of low level laser therapy (LLLT) was evaluated on the pain during orthodontic tooth movement. Materials and Methods: In this randomized clinical trial study, 12 patie...

2010
Ali H Hassan Ahmad A Al-Fraidi Samar H Al-Saeed

Corticotomy-assisted orthodontic treatment is an established and efficient orthodontic technique that has recently been studied in a number of publications. It has gradually gained popularity as an adjunct treatment option for the orthodontic treatment of adults. It involves selective alveolar decortication in the form of decortication lines and dots performed around the teeth that are to be mo...

2014
Steven W. McCormack Ulrich Witzel Peter J. Watson Michael J. Fagan Flora Gröning

Orthodontic tooth movement occurs as a result of resorption and formation of the alveolar bone due to an applied load, but the stimulus responsible for triggering orthodontic tooth movement remains the subject of debate. It has been suggested that the periodontal ligament (PDL) plays a key role. However, the mechanical function of the PDL in orthodontic tooth movement is not well understood as ...

2013
Hui Xue Jun Zheng Ziping Cui Xiufeng Bai Gang Li Caidi Zhang Sanhu He Weihong Li Shayanne A. Lajud Yinzhong Duan Hong Zhou

The present study was designed to determine the underlying mechanism of low-intensity pulsed ultrasound (LIPUS) induced alveolar bone remodeling and the role of BMP-2 expression in a rat orthodontic tooth movement model. Orthodontic appliances were placed between the homonymy upper first molars and the upper central incisors in rats under general anesthesia, followed by daily 20-min LIPUS or sh...

2016
Kinki Tokai Kyosei Shika Gakkai Gakujyutsu taikai Sokai

Duration of treatment is one of the main concerns of patients undergoing orthodontic treatment. Fixed orthodontic treatment lasts up to 2 to 3 years increasing the risk of external root resorption, periodontal problems and patient compliance [1]. Clinicians are constantly striving towards developing strategies to enhance the rate of orthodontic tooth movement. An increase in in-depth knowledge ...

Journal: :Collegium antropologicum 2003
Senka Mestrović Mladen Slaj Petra Rajić

The finite element method is a useful technique for measuring structural stress and for movement analyses. The objective of this investigation was to get a more accurate estimation of tooth movement depending on application point when a tipping orthodontic force is applied. The three-dimensional model of un upper canine, consisting of 4,000 hexahedron elements with 2,367 nodes was obtained. Hor...

Journal: :American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics 2006
Vinod Krishnan Ze'ev Davidovitch

Remodeling changes in paradental tissues are considered essential in effecting orthodontic tooth movement. The force-induced tissue strain produces local alterations in vascularity, as well as cellular and extracellular matrix reorganization, leading to the synthesis and release of various neurotransmitters, cytokines, growth factors, colony-stimulating factors, and metabolites of arachidonic a...

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