نتایج جستجو برای: human dental enamel

تعداد نتایج: 1787662  

Journal: :Romanian journal of morphology and embryology = Revue roumaine de morphologie et embryologie 2014
Ruxandra Matei Mihai Raul Popescu Mircea Suciu Anne Marie Rauten

Although the adhesion phenomenon is crucial in achieving and maintaining a composite building on dental structure, this phenomenon is not completely understood. On the other hand, adhesion is dependent on the interface quality (the interface between enamel and adhesive). In this study, the authors approached the subject of the influence of adhesive clinical application on the composite-enamel i...

2016
JiaLi Yin May Lei Mei QuanLi Li Rong Xia ZhiHong Zhang Chun Hung Chu

We aimed to create a slippery liquid-infused enamel surface with antibiofouling property to prevent dental biofilm/plaque formation. First, a micro/nanoporous enamel surface was obtained by 37% phosphoric acid etching. The surface was then functionalized by hydrophobic low-surface energy heptadecafluoro-1,1,2,2-tetra- hydrodecyltrichlorosilane. Subsequent infusion of fluorocarbon lubricants (Fl...

Journal: :Journal of dental research 1985
M Apap M Goldberg

A new microsampling method is described for measuring variations in calcium and phosphorus distribution in dental enamel. Ten successive layers, 10 micron thick, from five human enamel posts with previously abraded flat upper surfaces were ground and analyzed. Mean Ca and P values were, respectively, 1116 +/- 110 and 527 +/- 47 micrograms/mm3, and mean Ca/P w/w and molar ratios, 2.11 +/- 0.10 a...

Journal: :journal of dentistry, tehran university of medical sciences 0
masoud fallahinejad ghajari associated professor of pediatric dentistry, department of pediatric dentistry, school of dentistry , shahid beheshti university of medical sciences. tehran, iran. ladan eslamian professor of orthodontics, department of orthodontic dentistry, school of dentistry, shahid beheshti university of medical sciences .tehran, iran. azam naji rad pedodontist seyyedeh pouya morovati assistant professor of pediatric dentistry

objectives: this study aimed to compare the incidence of white spot lesions (wsls) around orthodontic bands following the application of two glass ionomer (gi) cements namely gc gold label and gc fuji plus for six to 12 months. materials and methods: a total of 186 permanent first molars of orthodontic patients requiring banding of at least two permanent first molars were chosen. the teeth were...

Journal: :Medical hypotheses 2004
R J Radlanski H Renz

In human enamel, the enamel rods do not run straight in most regions. Instead, they obtain an undulated path. The diameter of the enamel rods remains constant all the way, and a wavy pattern is necessary to produce the volume of the enamel mantle. It is not understood, how this undulated migration of ameloblasts is created. Considerations are presented to explain causal interdependencies betwee...

2012
Gennady V. Lubarsky Raechelle A. D’Sa Sanjukta Deb Brian J. Meenan Patrick Lemoine

Characterisation of the electrostatic properties of dental enamel is important for understanding the interfacial processes that occur on a tooth surface and how these relate to the natural ability of our teeth to withstand chemical attack from the acids in many soft drinks. Whereas, the role of the mineral component of the tooth enamel in providing this resistance to acid erosion has been studi...

Journal: :American journal of dentistry 2010
Alexander García-Godoy Franklin García-Godoy

PURPOSE To evaluate the effect of 8.0% arginine and calcium carbonate, in-office desensitizing paste (Colgate Sensitive Pro-Relief Desensitizing Paste) on the shear bond strength of composites to human dental enamel. METHODS Two resin composites (Filtek Supreme, Premise) and human dental enamel were used. 16 samples per composite were prepared. Caries-free extracted human molars, not older th...

Journal: :American journal of physical anthropology 2009
T M Smith K Harvati A J Olejniczak D J Reid J-J Hublin E Panagopoulou

Developmental and structural affinities between modern human and Neanderthal dental remains continue to be a subject of debate as well as their utility for informing assessments of life history and taxonomy. Excavation of the Middle Paleolithic cave site Lakonis in southern Greece has yielded a lower third molar (LKH 1). Here, we detail the crown development and enamel thickness of the distal c...

Background: To increase the effectiveness of orthodontic treatment in children with various degrees of dental enamel caries resistance using a personified orthodontic treatment. Materials and Methods: The present study included 108 adults (6-16 years old) with the first class of occlusion who referred for the Department of Pediatric Dent...

Fluoride is now accessible in a variety of forms, including water, toothpaste, mouth rinses, and professional fluoride therapy at dental clinics. A body of data supports the use of systemic and topical fluoride from various sources to prevent dental caries. Fluoride ions are absorbed by the enamel prior to tooth eruption and produce fluorohydroxyapatite, which is more resistant to acid attack t...

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