نتایج جستجو برای: tooth caries
تعداد نتایج: 134812 فیلتر نتایج به سال:
Research in dental caries generates data with two levels of hierarchy: that of a tooth overall and that of the different surfaces of the tooth. The outcomes often exhibit spatial referencing among neighboring teeth and surfaces, i.e., the disease status of a tooth or surface might be influenced by the status of a set of proximal teeth/surfaces. Assessments of dental caries (tooth decay) at the ...
Dental caries is one of the most common preventable childhood disease; people are susceptible to this ailment throughout the lifetime [1]. Data from the National Health and Nutrition Examination Survey (NHANES) conducted between 1999 and 2004 revealed that 28 percent of children ranging from 2 to 5 years of age had one or more primary tooth affected by dental caries and 51 percent of children h...
BACKGROUND Over the last two decades, progress in prevention and treatment of caries and periodontal diseases has been translated to better oral health and improved tooth retention in the adult population. The ageing population and the increasing expectations of good oral health-related quality of life in older age pose formidable challenges to clinical care and healthcare systems. AIMS The o...
Tooth enamel is the hardest substance in the human body and has a unique combination of hardness and fracture toughness that protects teeth from dental caries, the most common chronic disease worldwide. In addition to a high mineral content, tooth enamel comprises organic material that is important for mechanical performance and influences the initiation and progression of caries; however, the ...
It is generally accepted that three conditions are essential in the oral cavity for dental caries to occur: a suitable microbe, a substrate for the microbe, and a susceptible tooth. Susceptibility or resistance to dental caries is usually thought of in terms of structure, which is determined, for the most part, during calcification. However, it is also plausible that susceptibility to dental ca...
A multi-dimensional model for dental caries is applied to study the shape of caries lesions in a realistic tooth geometry and to examine the rate of progress of caries. An upgraded model, taking into account the outer prismless enamel layer, is derived and solved. The model demonstrates the importance of this layer in delaying the onset of caries. The conclusions are discussed in light of exper...
OBJECTIVES To evaluate the changes in the prevalence of dental caries in Lagos State over a 3 years period and the role of age, sex, and playing in the changes observed. MATERIALS AND METHODS Three primary schools in Lagos State, Nigeria were randomly selected for the study. Six hundred and thirty-three children age 2-12 years, were examined for caries in 2000 while 513 children were examined...
INTRODUCTION Dental decay (caries) can cause pain, infection and tooth loss, negatively affecting eating, speaking and general health. People living in rural and regional Australian communities have more caries, more severe caries and more untreated caries than those in the city. The unique environmental conditions and population groups in these communities may contribute to the higher caries b...
our aiin has been to correlate animal experiments and investigations on man, the former serving as a basis for the latter, It is obvious that these two means, taken in conjunction, hold out the best hope for the discovery of the aetiology of dental disease and for the evolution of suitable methods for its elimination. It has been shownl 2 that normal, well-developed teeth are more resistant to ...
AIM The aim of this study was to identify the causes and patterns of tooth loss among Nigerian adults. BACKGROUND Tooth loss continues to be a major problem in clinical dentistry and has received significant attention in everyday dental practice. In Nigeria there is a discernible lack of current data that would explain the reasons and patterns of tooth loss from its different geopolitical zon...
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