نتایج جستجو برای: affected dentine

تعداد نتایج: 289750  

Journal: :Photomedicine and laser surgery 2004
Walter Niccoli-Filho Luiz Alberto Plácido Penna Sigmar Mello Rode Rudimar Riva

OBJECTIVE A morphological and ultra-structural study of copper vapor laser (lambda = 510.6 nm) effects on enamel and dentine was performed to show the effects of this radiation. METHODS A total of 15 human molars were cut in half; 15 pieces were separated for irradiation on enamel and 15 for dentine. These two groups were further divided into five experimental groups, including a control grou...

2003
H. Watanabe K. Kataoka H. Iwami T. Shinoki Y. Okagami I. Ishikawa

This study was performed to examine the possibility of Er:YAG laser for dentine hypersensitivity treatment using a novel laser probe; broom-type probe. The morphological change of dentinal tubules of bovine dentine plate after low power laser irradiation (5 or 10 mJ/ pulse, 10 pps) or boiling was observed by SEM. Fifty teeth from 13 patients aged 31–54 years with complaint of dentine hypersensi...

Journal: :The Yale Journal of Biology and Medicine 1936
Bert G. Anderson Arthur H. Smith Sumter S. Arnim Aline U. Orten

Data have been presented indicating that changes occur in the dental structures of growing albino rats fed diets adequate except for extreme restriction of inorganic salts (Arnim et al.2). Marked rarefaction of the alveolar bone and the formation of irregular dentine containing few tubules, many spaces, and occasional cells were observed. This unusual dentine was most prominent in the cusps of ...

2016
May Lei Mei Quan-Li Li Chun Hung Chu

Root caries prevention has been a challenge for clinicians due to its special anatomical location, which favors the accumulation of dental plaque. Researchers are looking for anti-biofouling material to inhibit bacterial growth on exposed root surfaces. This study aimed to develop polydopamine-induced-polyethylene glycol (PEG) and to study its anti-biofouling effect against a multi-species cari...

Journal: :Clinica chimica acta; international journal of clinical chemistry 1973
I M Shapiro B Dobkin O C Tuncay H L Needleman

A method for the preparation of circumpulpal dentine for lead analysis is described. The technique consists of cutting 6oo-,L-thin sections of deciduous teeth, and, utilizing a vice, fracturing off the circumpulpal dentine from the coronal dentine. Both dentine and circumpulpal dentine of teeth of normal American children and previously identified lead-poisoned children were prepared in this fa...

Journal: :European journal of paediatric dentistry : official journal of European Academy of Paediatric Dentistry 2007
T Peric D Markovic

AIM The aim of the study was to assess the efficacy of chemo-mechanical method for caries removal based on histological analysis and scanning electron microscopy of dentine samples. METHODS Forty-five freshly extracted human deciduous and permanent teeth with dentinal caries were used in this in vitro study. The teeth were allocated to two different technique groups. Chemo- mechanical caries ...

2015
Chi P Lee John S Colombo Wayne Nishio Ayre Alastair J Sloan Rachel J Waddington

Bioactive growth factors identified within the extracellular matrix of dentine have been proposed roles in regulating the naturally inherent regenerative dentine formation seen in teeth in response to trauma and infection, which may also be harnessed for novel clinical treatments in augmenting mineralised tissue repair. This study examined the specific biological action of demineralised dentine...

Journal: :Archives of oral biology 2015
Nezar Boreak Hiroshi Ishihata Hidetoshi Shimauchi

OBJECTIVE To evaluate the flow dynamics of dentine fluid using a chemiluminescence method in vitro. MATERIALS AND METHODS Horizontally sliced coronal dentine specimens with thicknesses of 1.4, 1.6, 1.8, and 2.0mm (n=10 each) were prepared from extracted human third molars. After cleaning with EDTA, a mounted specimen was clamped between 2 acrylic chambers attached to both the occlusal and pul...

Journal: :Archaeological and Anthropological Sciences 2022

Abstract Neolithisation was a relatively fast process that affected both the interior and coastal zones of Iberian Peninsula, but it also heterogeneous had diverse impacts on genomic cultural diversity. In Late Neolithic–Chalcolithic, change in funerary practices, material trade networks occurred, heterogeneity decreased, suggesting human mobility genetic admixture between different populations...

Journal: :Environmental Health Perspectives 1997
B L Gulson B R Gillings

Stable lead isotopes and lead concentrations were measured in the enamel and dentine of permanent (n = 37) and deciduous teeth (n = 14) from 47 European immigrants to Australia to determine whether lead exchange occurs in teeth and how it relates to lead exchange in bone. Enamel exhibits no exchange of its European-origin lead with lead from the Australian environment. In contrast, dentine lead...

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