نتایج جستجو برای: glass ionomer

تعداد نتایج: 72658  

2016
X. D. Wang R. T. Qu S. J. Wu Q. Q. Duan Z. Q. Liu Z. W. Zhu H. F. Zhang Z. F. Zhang

Studying the effect of notch on the fatigue behavior of structural materials is of significance for the reliability and safety designing of engineering structural components. In this work, we conducted notch fatigue experiments of two high-strength materials, i.e. a Ti32.8Zr30.2Ni5.3Cu9Be22.7 metallic glass (MG) and a 00Ni18Co15Mo8Ti ultra-high strength steel (CM400 UHSS), and compared their no...

Journal: :Community dentistry and oral epidemiology 2006
N Beiruti J E Frencken M A van 't Hof W H van Palenstein Helderman

INTRODUCTION The difference in preventing dentine lesion development between resin-based and glass ionomer sealant materials is unclear. Two recently published reviews were unable to conclude on the difference because the comparison was an exclusion criterion in one review and there were statistical shortcomings in the relevant papers in the other (Cochrane) review. OBJECTIVES The aim of the ...

ژورنال: مجله دندانپزشکی 1998
قوام, مریم , مفتاحی, پروانه ,

  Current study is aimed to compare fluride release in conventional glass ionomer, light-cured glass ionomer and compomers. Standard samples from the aforementioned materials were prepared and measured by selective fluride ion electrode in intervals of 24hours, 1,2,3 and 4 weeks in neutral PH of 7 and acidic PH of 4.5. The obtained data represented that fluride ion release decreased in time but...

Journal: :Mansoura Journals of Dentistry 2023

To evaluate the influence of adding different antibiotics to glass ionomer cement (GIC) on its surfaceroughness, water sorption, and solubility.

Journal: :Journal of dental research 1991
R J Heys M Fitzgerald

The purpose of this study was to evaluate the ability of a glass-ionomer cement-base material to prevent bacterial penetration along the dentin interface and to compare it with two conventional cement-base materials. A total of 107 Class 5 restorations was placed in Rhesus monkey teeth by means of three test materials [zinc oxide-eugenol (ZOE), copalite varnish + zinc phosphate cement base (V +...

Journal: :The journal of contemporary dental practice 2017
Bita Rohani Mehrdad Barekatain Shirin Z Farhad Navid Haghayegh

INTRODUCTION In cervical lesions, various restorative materials can be inserted, which can be affected by the application of periodontal scalers. This study evaluated and compared the marginal seal of class V glass ionomer, composite resin, and amalgam restorations after subjecting them to hand instrumentation and ultrasonic scaling. MATERIALS AND METHODS In this experimental study, 30 sound ...

Journal: :Prilozi 2012
A Dimkov W J Nicholson E Gjorgievska S Booth

Because of the relatively frequent occurrence of recurrent caries after a restorative treatment, and because of the huge number of cariogenic microorganisms present in the oral cavity, which present a potential risk factor regarding the development of new carious lesions, attention has increasingly been directed towards the therapeutic antimicrobial effects of restorative materials. The glass i...

Journal: :Journal of the College of Physicians and Surgeons--Pakistan : JCPSP 2013
Nazish Fatima Syed Yawar Ali Abidi Fazal-ur-Rehaman Qazi Shahbaz Ahmed Jat

OBJECTIVE To estimate the microhardness of glass ionomer cement (vitrofil) and resin modified glass ionomer cement (vitremere) in the presence and absence of different surface protections. STUDY DESIGN An in-vitro experimental study. PLACE AND DURATION OF STUDY The Department of Operative Dentistry, Dr. Ishrat-ul-Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences...

2008
Matheus Melo Pithon Eduardo Franzotti Sant’anna

Correspondence to: Matheus Melo Pithon Rua México 78 Recreio, Vitória da Conquista, Bahia, Brazil CEP 45020-390 Phone: +55 77 34212750 E-mail: [email protected] Abstract The evolution in glass ionomer cements has contributed to the reduction in dental caries in orthodontic patients because of the biological and chemical characteristics of this material; however no studies in the literatu...

2012
Biji Briget

Objective: The Purpose of this investigation was to assess the effectiveness of Mineral Trioxide Aggregate in providing an apical seal in comparison with High Copper Silver Amalgam, Conventional Glass Ionomer Cement Type 2, and Glass Cermet cement by using a dye penetration method. Methods: The root canals of seventy extracted teeth were instrumented and obturated with gutta-percha. Each tooth ...

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