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https://www.readbyqxmd.com/read/28816187/comparison-of-film-thickness-of-two-commercial-brands-of-glass-lonomer-cement-and-one-dual-cured-composite-an-in-vitro-study
#1
Rajat R Khajuria, Rishav Singh, Pranamee Barua, Nausheen Hajira, Naveen Gupta, Rohit R Thakkar
AIM: The present study is undertaken to examine the film thickness of three most commonly used luting cements and to determine their usage as a luting agent. MATERIALS AND METHODS: This study was carried out strictly according to the guidelines of American Dental Association (ADS) specification no. 8. Two glass slabs of 5 cm in length and 2 cm in width were used. One glass slab was kept over the other glass slab and the space between the two glass slabs was measured using metallurgical microscope at the power of 10*...
August 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28808218/setting-kinetics-and-mechanical-properties-of-flax-fibre-reinforced-glass-ionomer-restorative-materials
#2
Ensanya Ali Abou Neel, Anne M Young
Regardless of the excellent properties of glass ionomer cements, their poor mechanical properties limit their applications to non-load bearing areas. This study aimed to investigate the effect of incorporated short, chopped and randomly distributed flax fibers (0, 0.5, 1, 2.5, 5 and 25 wt%) on setting reaction kinetics, and mechanical and morphological properties of glass ionomer cements. Addition of flax fibers did not significantly affect the setting reaction extent. According to their content, flax fibers increased the compressive (from 148 to 250 MPa) and flexure strength (from 20 to 42 MPa)...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28806426/comparative-evaluation-of-the-effect-of-laser-etching-on-the-shear-bond-strength-of-crowns-cemented-with-two-different-luting-agents-an-in-vitro-study
#3
Ankur Dahiya, Paresh Gandhi, Nadim Z Baba
PURPOSE: The aim of this study was to compare the shear bond strength of crowns cemented on natural teeth after surface treatment of the enamel with an erbium-doped yttrium aluminum garnet (Er:YAG) laser. MATERIALS AND METHODS: Crown preparation was done for 40 full-metal crowns, and wax patterns with loops were cast in a cobalt-chromium alloy. The Er:YAG laser was used for surface treatment of some teeth, and teeth without surface treatment acted as the control...
August 14, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28798450/atraumatic-restorative-treatment-and-minimal-intervention-dentistry
#4
J E Frencken
Too many people worldwide suffer from the consequences of untreated dentine carious lesions. This finding reflects the inability of the currently used traditional mode of treatments to manage such lesions. A change is needed. Dental training institutions should depart from the traditional 'drill and fill' treatments and embrace the holistic oral healthcare approach that is minimal intervention dentistry (MID) and includes within it minimally invasive operative skills. Dental caries is, after all, a preventable disease...
August 11, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28798441/minimal-intervention-management-of-the-older-patient
#5
L J Walsh
With an aging population, dentists need to be aware of the risks which come to their elderly patients from retained teeth and exposed root surfaces. Oral health problems in the later years of life are multifactorial, with lifestyle, plaque and salivary factors remaining paramount. Root surface caries is likely to present a challenge in patients with a strong history of past coronal caries (and who have the attendant lifestyle risk factors) as well as in elderly patients who suddenly develop salivary hypofunction...
August 11, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28783130/shear-bond-strength-and-remineralisation-effect-of-a-casein-phosphopeptide-amorphous-calcium-phosphate-modified-glass-ionomer-cement-on-artificial-caries-affected-dentine
#6
Irene Shuping Zhao, May Lei Mei, Zhuo Long Zhou, Michael Francis Burrow, Edward Chin-Man Lo, Chun-Hung Chu
This study investigated the effect of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP)-modified glass ionomer cement (GIC) on shear bond strength (SBS) and remineralisation of artificial "caries-affected" dentine. Human dentine slices were demineralised and allocated to three groups: group 1, conventional GIC; group 2, CPP-ACP-modified GIC; and group 3, resin-modified GIC. The SBS was measured using a universal testing machine (n = 16 per group). Remaining samples (n = 8 per group) were subjected to pH-cycling for 28 days...
August 7, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28782290/risk-of-subsequent-attention-deficit-hyperactivity-disorder-among-children-and-adolescents-with-amalgam-restorations-a-nationwide-longitudinal-study
#7
Po-Yen Lin, Jui Wang, Yu-Chih Chiang, Chen-Yin Lai, Hong-Ji Chang, Lin-Yang Chi
OBJECTIVES: Dental amalgam has been used as a common restorative material since the 1800s, but concerns have been raised regarding its purported neuropsychological effects due to the neurotoxicity of mercury. In this study, a nationwide population-based database was employed to investigate the association of dental amalgam restoration with the risk of attention-deficit/hyperactivity disorder (ADHD). METHODS: After matching, 88 068 young people with at least one tooth restoration during 2002-2010 and no ADHD history before 2001 were selected and then collected the further information until the end of 2011...
August 7, 2017: Community Dentistry and Oral Epidemiology
https://www.readbyqxmd.com/read/28780718/clinical-and-radiographic-comparison-of-biodentine-mineral-trioxide-aggregate-and-formocresol-as-pulpotomy-agents-in-primary-molars
#8
P Juneja, S Kulkarni
AIM: To compare the clinical and radiographic success rates of three different pulpotomy agents in primary molars after 18 months. METHODS: The study was carried out with 51 primary molars of children aged 5-9 years old. The teeth were randomly assigned to the experimental or control groups. After coronal pulp removal and haemostasis, the remaining pulp tissue was covered with Biodentine(®) or mineral trioxide aggregate in the experimental groups. In the control group, formocresol was placed with a cotton pellet over the pulp tissue for 5 min and after removal the pulp tissue was covered with zinc oxide-eugenol (ZOE) paste...
August 5, 2017: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/28774841/antibacterial-glass-ionomer-cement-restorative-materials-a-critical-review-on-the-current-status-of-extended-release-formulations
#9
REVIEW
Tahereh Mohammadi Hafshejani, Ali Zamanian, Jayarama Reddy Venugopal, Zahra Rezvani, Farshid Sefat, Mohammad Reza Saeb, Henri Vahabi, Payam Zarrintaj, Masoud Mozafari
Glass-ionomer cements (GICs) have been widely used for over forty years, because of their desirable properties in dentistry. The most important advantages of the GICs are associated with their ability to release long-term antimicrobial agents. However, GICs used as restorative materials have still lots of challenges due to their secondary caries and low mechanical properties. Recent studies showed that the fluoride-releasing activity of conventional GICs is inadequate for effectual antibacterial conservation in many cases...
July 31, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28774007/do-dental-resin-composites-accumulate-more-oral-biofilms-and-plaque-than-amalgam-and-glass-ionomer-materials
#10
Ning Zhang, Mary A S Melo, Michael D Weir, Mark A Reynolds, Yuxing Bai, Hockin H K Xu
A long-time drawback of dental composites is that they accumulate more biofilms and plaques than amalgam and glass ionomer restorative materials. It would be highly desirable to develop a new composite with reduced biofilm growth, while avoiding the non-esthetics of amalgam and low strength of glass ionomer. The objectives of this study were to: (1) develop a protein-repellent composite with reduced biofilms matching amalgam and glass ionomer for the first time; and (2) investigate their protein adsorption, biofilms, and mechanical properties...
November 1, 2016: Materials
https://www.readbyqxmd.com/read/28772386/influence-of-porous-spherical-shaped-hydroxyapatite-on-mechanical-strength-and-bioactive-function-of-conventional-glass-ionomer-cement
#11
Szu-Yu Chiu, Yukari Shinonaga, Yoko Abe, Kyoko Harada, Kenji Arita
Glass-ionomer-cement (GIC) is helpful in Minimal Intervention Dentistry because it releases fluoride ions and is highly biocompatible. The aim of this study is to investigate the mechanisms by which hydroxyapatite (HAp) improves the mechanical strength and bioactive functioning of GIC when these materials are combined to make apatite ionomer cement (AIC). A conventional GIC powder was mixed with porous, spherical-HAp particles (HApS), crystalline HAp (HAp200) or one of two types of cellulose. The micro-compressive strengths of the additive particles were measured, and various specimens were evaluated with regard to their compressive strengths (CS), fluoride release concentrations (fluoride electrode) and multi-element release concentrations...
January 3, 2017: Materials
https://www.readbyqxmd.com/read/28764285/a-comparative-evaluation-of-the-influence-of-command-set-methods-on-microleakage-of-glass-ionomer-cement-an-in-vitro-study
#12
Sairaj Punnathara, Ramalingam Krishnakumar, Mohan Govindarajan, Momeka Kanaran, Sunil Thomas Philip, Aswin Saseendran Nair, Joby Peter
INTRODUCTION: A major challenge when using glass ionomer cement in clinical situation particularly in paediatric dentistry is to overcome the problem of microleakage. Fast or command setting of Type IX glass ionomer cement using external energy source enhances the setting reaction and results in improved initial physical and mechanical properties. AIM: To compare and evaluate the influence of ultrasonic activation, halogen light irradiation and combined effect of both on microleakage of enamel adjacent to Type IX glass ionomer restorations...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28762350/comparative-evaluation-of-microleakage-between-bulk-esthetic-materials-versus-resin-modified-glass-ionomer-to-restore-class-ii-cavities-in-primary-molars
#13
Vellore Kannan Gopinath
AIM: The aim of the study was to assess the microleakage of one high-viscosity conventional glass ionomer cement (GIC) and a bulk-fill composite resin, in comparison to a resin-modified GIC in Class II restorations in primary molars. MATERIALS AND METHOD: Standardized Class II slot cavity preparations were prepared in exfoliating primary molars. Teeth were restored using one of the three materials tested (n = 10): SonicFill bulk-fill composite resin (SF), EQUIA Fil conventional reinforced GIC (EQF), and Vitremer resin-reinforced GIC (VT)...
July 2017: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/28761378/calcium-hydroxide-liners-a-literature-review
#14
REVIEW
Naji Ziad Arandi
OBJECTIVE: This review integrates the literature on cavity liners and current concepts of pulp protection with the aim of establishing a better understanding of the role of calcium hydroxide as a cavity liner. MATERIALS AND METHODS: A search was conducted through PubMed, MEDLINE, and Ovid for articles with the criteria for the following terms: cavity liners and bases, pulp protection, and calcium hydroxide liners. No specific inclusion or exclusion criteria were applied as to what articles would be included in this review...
2017: Clinical, Cosmetic and Investigational Dentistry
https://www.readbyqxmd.com/read/28759777/color-stability-of-dental-restorative-materials-submitted-to-cold-temperatures-for-forensic-purposes
#15
Roberto Cesar Biancalana, Sergio Augusto Freitas Vincenti, Ricardo Henrique Alves da Silva, Fernanda Carvalho Panzeri Pires-de-Souza
In the post-mortem examination of the dental arches of accident victims in cold locations, dental restorative materials can be found. Cold temperatures can be capable of causing color changes of aesthetic materials, such as composite resin (CR) and glass ionomer cement (GIC). The aim of this study was to evaluate the effect of the cold action on the color stability of CR and GIC restorations, in order to discriminate them and enable the adequate comparison between antemortem and post-mortem data. Sixty bovine teeth (30 CR and 30 GIC) were prepared (6 × 6 × 2 mm) and separated into groups (n = 10)...
July 25, 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/28759120/pit-and-fissure-sealants-for-preventing-dental-decay-in-permanent-teeth
#16
REVIEW
Anneli Ahovuo-Saloranta, Helena Forss, Tanya Walsh, Anne Nordblad, Marjukka Mäkelä, Helen V Worthington
BACKGROUND: Dental sealants were introduced in the 1960s to help prevent dental caries, mainly in the pits and fissures of occlusal tooth surfaces. Sealants act to prevent bacteria growth that can lead to dental decay. Evidence suggests that fissure sealants are effective in preventing caries in children and adolescents compared to no sealants. Effectiveness may, however, be related to caries incidence level of the population. This is an update of a review published in 2004, 2008 and 2013...
July 31, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28753997/effects-of-chlorhexidine-encapsulated-mesoporous-silica-nanoparticles-on-the-anti-biofilm-and-mechanical-properties-of-glass-ionomer-cement
#17
Huiyi Yan, Hongye Yang, Kang Li, Jian Yu, Cui Huang
One of the primary causes for the failure of glass ionomer cement (GIC) is secondary caries. To enhance the anti-microbial performance of GIC without affecting its mechanical properties, chlorhexidine (CHX) was encapsulated in expanded-pore mesoporous silica nanoparticles (pMSN) to synthesize CHX@pMSN. CHX@pMSN was added at three mass fractions (1%, 5%, and 10% (w/w)) to GIC powder as the experimental groups. Pure GIC was set as the control group. The mechanical and anti-biofilm properties of GIC from each group were tested...
July 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28752157/retention-rate-of-four-different-sealant-materials-after-four-years
#18
Weiwei Zhang, Xi Chen, Mingwen Fan, Jan Mulder, Jo E Frencken
PURPOSE: To test the hypotheses: 1) cumulative survival rates of fully and partially retained high-viscosity glass-ionomer (HVGIC) ART sealants with heat application and glass-carbomer sealants on occlusal and free-smooth surfaces are both higher than that of resin sealants; 2) cumulative survival rate of fully and partially retained high-viscosity glass-ionomer ART sealant with heat application on occlusal and free-smooth surfaces is higher than that of comparable ART sealants without heat application...
July 27, 2017: Oral Health & Preventive Dentistry
https://www.readbyqxmd.com/read/28752095/a-deep-morphological-characterization-and-comparison-of-different-dental-restorative-materials
#19
R Condò, L Cerroni, G Pasquantonio, M Mancini, A Pecora, A Convertino, V Mussi, A Rinaldi, L Maiolo
Giomer is a relatively new class of restorative material with aesthetics, handling and physical properties of composite resins, and benefits of glass ionomers: high radiopacity, antiplaque effect, fluoride release, and recharge. To verify the superior properties of Giomers, in this study, a deep morphological characterization has been performed with an in vitro comparative study among a Giomer (Beautifil® II by Shofu Dental Corporation, Osaka, Japan), a Compomer (Dyract Extra by Dentsply, Caulk, Germany), glass ionomer cement (Ketac fil plus by 3M ESPE), and a composite resin (Tetric Evoceram by Ivoclar)...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28748053/allogeneic-stem-cells-derived-from-human-exfoliated-deciduous-teeth-shed-for-the-management-of-periapical-lesions-in-permanent-teeth-two-case-reports-of-a-novel-biologic-alternative-treatment
#20
Madu Ghana Shyam Prasad, Juvva Ramakrishna, Duvvi Naveen Babu
Stem cells are the pluripotent cells that have the capacity to differentiate into other specialized cells. Recently, many experiments have been conducted to study the potentiality of stem cells in the tissue regeneration. We report two cases treated utilizing stem cells from human exfoliated deciduous teeth (SHED) in the management of periapical lesions in permanent teeth. Two normal human deciduous teeth from children, 7‒8 years of age, were collected to isolate stem cells. Two patients, one with periapical pathology alone and the other with periapical lesion along with an open apex in young permanent teeth, were selected for the study...
2017: Journal of Dental Research, Dental Clinics, Dental Prospects
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