نتایج جستجو برای: x gideon enamel microhardness

تعداد نتایج: 635241  

Ajami, Behjatolmolok, Ebrahimi, Masoomeh, Karbasi, Sedigheh,

An In - Vitro study on the effect of Iranian soft drinks on enamel microhardness of primary teeth Dr. B. Ajami* - Dr. M. Ebrahimi** - Dr. S. Karbasi*** *- Associate Professor of Pedodontics Dept. – Faculty of Dentistry – Mashhad University of Medical Sciences. **- Assistant Professor of Pedodontics Dept. – Faculty of Dentistry – Mashhad University of Medical Sciences. ***- Dentist. Background a...

Journal: :Archives of oral biology 1994
S R Grobler I J du Toit N J Basson

Various fruit juices with relatively low pH are known to have erosive effects on human tooth enamel in a reasonably short time. Honey, also with a relatively low pH, could do the same, but scanning electron microscopy showed no erosion of enamel by honey over a period of 30 min, neither did Knoop microhardness tests show any deterioration of enamel structure. The absence of any effect could be ...

Journal: :Journal of clinical and diagnostic research : JCDR 2015
Bejoy Mony A V Rajesh Ebenezar Mohamed Fayas Ghani Ashwin Narayanan Anand S Ajit George Mohan

AIM To evaluate the remineralization potential of enamel surface lesion using chicken eggshell powder (CESP) solution. MATERIALS AND METHODS Ten freshly extracted un-erupted third molars decoronated at cement-enamel junction (CEJ) used in this study. Each decoronated tooth was sectioned to get 4 samples of enamel blocks such that 40 blocks were obtained which were then subjected to deminerali...

2013
Didem Nalbantgil Mehmet Oguz Oztoprak Derya Germec Cakan Kemal Bozkurt Tulin Arun

OBJECTIVE This in-vitro study was done to evaluate the effects of two different seal materials, Duraflor™ and Enamel Pro(®) Varnish, on enamel demineralization adjacent to orthodontic fixed appliances. METHODS Seventy-two extracted solid premolars were allocated to three groups as one control and two study groups after brackets were placed and bonded with Transbond™ XT. The control group rece...

2013
Ece EDEN Dilsah COGULU Thomas ATTIN

The aim of this study is to examine the effect of different finishing and polishing systems on the surface roughness, microhardness and microleakage of a nano-hybrid composite. The effect of four different finishing and polishing systems (Mylar-strip, Diamond finishing bur, Sof-lex disc, PoGo) were evaluated on a nanohybrid composite (Ceram-X mono, Denstply). The surface roughness was measured ...

2015
Mohammad Bagher Rezvani Mehrdad Karimi Raheleh Akhavan Rasoolzade Roza Haghgoo

STATEMENT OF THE PROBLEM With the recent focus of researches on the development of non-invasive treatment modalities, the non-invasive treatment of early carious lesions by remineralization would bring a major advance in the clinical management of these dental defects. Casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) is considered to be effective in tooth remineralization. PURPOSE ...

Journal: :Brazilian dental journal 2015
Stella S Ferreira Tais Scaramucci Anderson T Hara Idalina V Aoki Maria Angela Pita Sobral

Protein supplementation may be an alternative to reduce the erosive potential of acidic drinks. The aim of this in vitro study was to evaluate the erosive potential of an orange juice modified by dietary proteins. A commercially available orange juice was added 0.2 g/L casein, 2.0 g/L ovalbumin and their combination. The juice with no additives and a commercially available calcium-modified juic...

Journal: :Biomedical materials 2009
S B Huang S S Gao H Y Yu

The purpose of the research was to determine the effect of nano-hydroxyapatite concentrations on initial enamel lesions under dynamic pH-cycling conditions. Initial enamel lesions were prepared in bovine enamel with an acidic buffer. NaF (positive control), deionized water (negative control) and four different concentrations of nano-hydroxyapatite (1%, 5%, 10% and 15% wt%) were selected as the ...

Journal: :Brazilian dental journal 2010
Eliana Rodrigues Alberto Carlos Botazzo Delbem Denise Pedrini Luciana Cavassan

This study proposes a pH-cycling model for verifying the dose-response relationship in fluoride-releasing materials on remineralization in vitro. Sixty bovine enamel blocks were selected for the surface microhardness test (SMH1). Artificial caries lesions were induced and surface microhardness test (SMH2) was performed. Forty-eight specimens were prepared with Z 100, Fluroshield, Vitremer and V...

Journal: :Journal of clinical microbiology 1986
H E Strassler G E Minah K S Kula

Devices simulating occlusal fissures were constructed from dental enamel and bonded to human maxillary molar teeth for 3 weeks. Facilitation of in vivo caries research in humans is the long-range goal for this model system. In the present investigation, microbial compositions of plaque in the fissural space of the model and natural fissural plaque from teeth bearing the devices were compared. P...

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