نتایج جستجو برای: dental enamel

تعداد نتایج: 166985  

Journal: :American journal of physical anthropology 1985
M L Blakey G J Armelagos

The month of onset, duration, and incidence of dental enamel hypoplasia and hypocalcification was determined in sub-adults from the Dickson Mounds (Illinois) skeletal series (A.D. 950-1300). The onset of enamel defects occurred predominantly during the intrauterine period, suggesting maternal stress. There are marked differences in survivorship and the duration of enamel disruption in those aff...

2013
V. Lakshmi

Flourosis is the result of fluoride rearranging the crystalline structure of a tooth's enamel as it is still growing. It is evidence of fluoride's potency and ability to cause physiologic changes within the body and raises concerns about similar damage that may be occurring in the bones. Fluoride causes dental fluorosis by damaging the enamel-forming cells, called ameloblasts. The damage to the...

Journal: :Development 1992
A MacKenzie M W Ferguson P T Sharpe

We have studied the expression patterns of the newly isolated homeobox gene, Hox-8 by in situ hybridisation to sections of the developing heads of mouse embryos between E9 and E17.5, and compared them to Hox-7 expression patterns in adjacent sections. This paper concentrates on the interesting expression patterns of Hox-8 during initiation and development of the molar and incisor teeth. Hox-8 e...

2008
Cosmin Balabuc Mariana Miron Camelia Demian Meda Negrutiu Laura Filip Carmen Todea

Received for publication: Sep. 06, 2007. Revised: Sep. 21, 2007. rEZUMat 1 Department of Oral Rehabilitation and Dental Emergency, Faculty of Dentistry, Victor Babes University of Medicine and Pharmacy, Timisoara, 2 Department of Material Sciences and Thermal Treatments, Faculty of Mechanical Engineering, Polytechnic University, Timisoara, 3 Department of Dental Materials and Dental Technologie...

Journal: :Critical Reviews in Oral Biology & Medicine 1999

Journal: :Journal of Dental Research 1981

2010
Po-Yen Lin Hong-Chou Lyu Chin-Ying Stephen Hsu Chia-Seng Chang Fu-Jen Kao

In this study, multiphoton excitation was utilized to image normal and carious dental tissues noninvasively. Unique structures in dental tissues were identified using the available multimodality (second harmonic, autofluorescence, and fluorescence lifetime analysis) without labeling. The collagen in dentin exhibits a strong second harmonic response. Both dentin and enamel emit strong autofluore...

Journal: :medical journal of islamic republic of iran 0
saber azami-aghdash road traffic injury research center, tabriz university of medical sciences, tabriz, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تبریز (tabriz university of medical sciences)سازمان های دیگر: road traffic injury research center farbod ebadifard azar health management and economics research center, iran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences)سازمان های دیگر: health management and economics research center fatemeh pournaghi azar road traffic injury research center, tabriz university of medical sciences, tabriz, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تبریز (tabriz university of medical sciences)سازمان های دیگر: road traffic injury research center aziz rezapour department of health economics, health management and economics research center, iran university of medical sciences, center of excellence in health management and economics, health management and information sciences, iran university of medical sciences,سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences)سازمان های دیگر: health management and economics research center mohammad moradi-joo cancer research center, shahid beheshti university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences)سازمان های دیگر: cancer research center ahmad moosavi department of health and community medicine, dezful university of medical sciences, dezful, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی دزفول (dezful university of medical sciences)

background: dental traumas are common among children and adolescents in many societies posing health and social problems. the aim of this study was to conduct a systematic review and meta-analysis on prevalence, etiology, types, and other epidemiologic aspects of dental trauma in children and adolescents (0-18 years old). methods: in this systematic meta-analytical review, data were collected s...

2012
L. A. Darchuk L. V. Zaverbna R. Van Grieken

Ionizing radiation remains the most significant environmental factor, causing severe impacts on human health on the vast territory of Ukraine for 25 years. Medical monitoring of the dental health of more than 1500 people who participated in cleaning work at the Chernobyl power station territory after the catastrophe has demonstrated an increasing of specific dental problems occurred after sever...

ژورنال: مجله دندانپزشکی 2016
احدی, منا, فکر آزاد, رضا, مجدآبادی, عباس,

Background and Aims: Nowadays lasers are used as alternatives to the tooth preparation because of reducing pain and bloodshed. The aim of this study was to observe the effect of ArF laser on the dental hard tissues. Materials and Methods: For this research human molar teeth with no caries or dental restoration and enamel cracks were used. Irradiation laser energies were taken 95, 70 and ...

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