نتایج جستجو برای: tooth

تعداد نتایج: 89477  

2014
T Wu

Introduction Regenerating a tooth completely in human oral cavity is not achieved by current studies yet. Here, we have conceived a man-induced method to construct a teeth germ which might be used to regenerate a tooth in vivo. This idea was generated by traits of the development of the compound odontoma, a benign tumour of tooth malformation. This is a kind of developmental tooth malformation,...

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
alireza hadi dept. of prosthodontics, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. aboulfazl saboury dept. of prosthodontics, school of dentistry, shahid beheshti university of medical sciences, tehran, iran.

abstract the attrition of anterior teeth leads to the loss of efficient anterior guidance, which protects posterior teeth from wear during lateral excursions. this clinical report describes a 48-year-old man with diagonal tooth wear and posterior mandibular tooth loss. the clinical diagnosis was based on a complete oral examination, photos, functional analysis of lateral excursion movements, ge...

2015
Naomi Yamamoto Masamitsu Oshima Chie Tanaka Miho Ogawa Kei Nakajima Kentaro Ishida Keiji Moriyama Takashi Tsuji

The tooth is an ectodermal organ that arises from a tooth germ under the regulation of reciprocal epithelial-mesenchymal interactions. Tooth morphogenesis occurs in the tooth-forming field as a result of reaction-diffusion waves of specific gene expression patterns. Here, we developed a novel mechanical ligation method for splitting tooth germs to artificially regulate the molecules that contro...

2013
Michael D. D’Emic John A. Whitlock Kathlyn M. Smith Daniel C. Fisher Jeffrey A. Wilson

BACKGROUND Tooth replacement rate can be calculated in extinct animals by counting incremental lines of deposition in tooth dentin. Calculating this rate in several taxa allows for the study of the evolution of tooth replacement rate. Sauropod dinosaurs, the largest terrestrial animals that ever evolved, exhibited a diversity of tooth sizes and shapes, but little is known about their tooth repl...

Journal: :The Iowa Review 1997

Journal: :Journal of international oral health : JIOH 2013
Mohankumar K P Priya N K Madhushankari G S

BACKGROUND An upsurge of herbal products in various catalogues of fast moving consumer goods is evident. Dental creams or pastes which have numerous brands since years, have addition of many more herbal tooth pastes. Main claim of these herbal tooth pastes being effective reduction in cavities and plaque control. Proven fact is that proper brushing with a tooth brush and tooth paste brings down...

Journal: :journal of dentistry, tehran university of medical sciences 0
b. vadiati saberi postgraduate student, department of periodontology, school of dentistry, babol university of medical a. shakoorpour postgraduate student, department of periodontology, school of dentistry, babol university of medical

to report the oral findings, including dental anomalies, ectopic eruption of the maxillary permanent first molars and periodontal disease and soft tissue alterations, in a subject with apert syndrome. clinical and radiographic examination of a patient with apert syndrome, aged 21 years old, not previously submitted for orthodontic or orthognathic treatment. dental anomalies were present in a pa...

Journal: :journal of dental materials and techniques 0
seifollah gholampour assistant professor of biomechanical engineering, department of biomedical engineering, tehran north branch, islamic azad university, tehran, iran.سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) ghazale zoorazma student of biomechanical engineering. department of biomedical engineering, tehran north branch, islamic azad university, tehran, iran.سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) ehsan shakouri assistant professor of mechanical engineering, department of biomedical engineering, tehran north branch, islamic azad university, tehran, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch)

ackground and aim: it is important to evaluate the effect of the type of filling material on deformation and strength of tooth after filling and also the effect of filling depth on quality of restoration of a decayed tooth. material and methods: the orthopantomogram (opg) of the first and second molars of a 28-year-old man was made and the teeth were 3d modeled. the stress-deformation analysis ...

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
مسعود اجلالی massoud ejlali dental school, shahid beheshti university of medical sciences,tehran-iran ([email protected])دانشکده دندانپزشکی، دانشگاه علوم پزشکی شهید بهشتی راحیل احمدی rahil ahmadi

background & aim: the artificial teeth are produced with same standards for all the ethnics and countries in the world. the purpose of this study was to establish a normative size distribution in a group of students and staffs of shahid beheshti university of medical sciences. methods & materials: 320 individuals participated in this descriptive study. a vernier caliper was used to measure the ...

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