نتایج جستجو برای: infected dentine
تعداد نتایج: 164834 فیلتر نتایج به سال:
The aim was to analyze the protective effects of titanium, zirconium and hafnium tetrafluorides on erosion of pellicle-free and pellicle-covered enamel and dentine in vitro. Eight groups of 20 specimens each of bovine enamel and bovine dentine were prepared. Half the specimens in each group were immersed in human saliva for 2 h for pellicle formation. Specimens were then left untreated (control...
AIM Dentine hypersensitivity may be defined as pain arising from exposed dentine typically in response to chemical, thermal or osmotic stimuli that cannot be explained as a rising from any other form of dental defect or pathology. The aim to this cross-sectional study was to determine prevalence of dentine hypersensitivity (DH) and to examine some associated etiological factors in a study of pa...
Gilbert et al. (2004) report on the lack of Yersinia pestis DNA detection in 108 teeth collected in five northern Europe suspected plague sites, thus challenging our discoveries in three southern Europe sites (Drancourt et al., 1998; Raoult et al., 2000). The interpretation of these negative results is either the absence of Y. pestis in tested specimens or a failure to detect it. Particularitie...
OBJECTIVES To review the available literature investigating the effects of peroxide-based products and solutions on enamel and dentine properties. SOURCES All original scientific full papers listed in ISI Web of Science and Medline were included in this review using the search terms peroxide AND (enamel OR dentin*) up to the end of 2006. CONCLUSIONS The majority of studies indicate that per...
SUMMARY OBJECTIVES The purpose of this study was to investigate time-related dental tissue reactions to tooth replantation in mature and immature human premolars by histomorphometric and radiographic methods. MATERIAL AND METHODS Sixty premolars were extracted, immediately replanted (T0), and left without intervention for 1, 2, 3, 6, 12, and 24 weeks before re-extraction (T1). Periapical radi...
High-sucrose diet and metabolic acidosis have some similar effects on bone and they both reduce the formation of dentine. This series of experiments was conducted in order to get information about the effects of acidosis and alkalosis on dentine during primary dentinogenesis and also to ascertain if high-sucrose diet affects dentine formation via acidosis. Chronic metabolic acidosis (0.25 mol/L...
BACKGROUND Translucency of dentine is the result of occlusion of the corresponding dentinal tubules by a mineral substance which has a refractive index similar to that of the rest of the dentine. CASE PRESENTATION This case report describes the microradiographic features of an upper cadaveric canine. Transverse microradiograph is one of the methods assessing apical dentine translucency for va...
The diffusion through dentine by a number of biological and synthetic molecules, including resins and dyes, is reported. In vitro measurements were derived by experiments with a modified 'split-chamber device'. Diffusion was found to be indirectly proportional to dentine thickness for all molecules. Permeability of water-soluble molecules and ethanol-soluble molecules was proportional to the mo...
BACKGROUND Candida albicans may have cariogenic potential but its role in caries etiology has not been established. The aim of this study was to determine candida albicans in supragingival dental plaque and infected dentine of cervical and proximal in early childhood caries (ECC). METHODS This cross-sectional study was carried out on 6o children aged 2-5 years, which were divided into 3 group...
Received: January 06, 2017; Accepted: January 16, 2017; Published: January 18, 2017 One of the most important components in dentistry is dentine, which is a complex structure with a high organic component. Majority of its organic component is consisted of collagen type I fibres followed by collagen type III, proteoglycans, MMPs and cysteine cathepsins. Thus, dentine can be introduced as one of ...
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