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https://www.readbyqxmd.com/read/28727468/effect-of-finishing-procedures-on-the-surface-roughness-of-resin-modified-glass-ionomer-materials
#1
Mohammad Garshasb, Gildo C Santos, Amin S Rizkalla, Richard Bohay, M Jacinta Santos
This study examined the influence of finishing procedures on the surface roughness of different formulations of resin-modified glass ionomers (RMGIs) available in capsules compared with standard resin composites (RCs). Disc samples of three RMGIs and two RCs were fabricated using a metal mold (5 mm x 1.5 mm). Samples were randomly divided into seven groups (N = 10) and subjected to finishing and polishing procedures using a combination of carbide or diamond burs, followed by either rubber points or aluminum-oxide discs...
July 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28717632/effect-of-different-intracoronal-bleaching-methods-on-shear-bond-strength-of-ceramic-brackets-bonded-to-bleached-enamel-an-in-vitro-study
#2
Vikas Chauhan, Piush Kumar, Payal Sharma, Divya Shetty
OBJECTIVE: To investigate the effect of different intracoronal bleaching methods on the shear bond strength and site of failure of ceramic brackets. MATERIALS AND METHODS: Sixty freshly extracted human maxillary incisors were randomly divided into four groups (n = 15). Endodontic access cavity was prepared and root canals were filled, root fillings were removed 2mm apical to the cementoenamel junction, and a 2-mmthick layer of glass ionomer cement base was applied...
July 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/28701639/synthesized-mesoporous-silica-and-calcium-aluminate-cement-fillers-increased-the-fluoride-recharge-and-lactic-acid-neutralizing-ability-of-a-resin-based-pit-and-fissure-sealant
#3
Atikom Surintanasarn, Krisana Siralertmukul, Niyom Thamrongananskul
This study evaluated the effect of different types of filler in a resin-based pit and fissure sealant on fluoride release, recharge, and lactic acid neutralization. Resin-based sealant was incorporated with 5% w/w of the following fillers: calcium aluminate cement (CAC), synthesized mesoporous silica (SI), a CAC and SI mixture (CAC+SI), glass-ionomer powder (GIC), and acetic acid-treated GIC (GICA). Sealant without filler served as control. The samples were immersed in deionized water or a lactic acid solution and the concentration of fluoride in the water, before and after fluoride recharge, and the lactic acid pH change, respectively, were determined...
July 12, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28701637/retention-and-caries-preventive-effect-of-glass-ionomer-and-resin-based-sealants-an-18-month-randomized-clinical-trial
#4
Asma Al-Jobair, Nouf Al-Hammad, Salwa Alsadhan, Fouad Salama
The objective of this study was to compare the retention and caries-preventive effect of glass ionomer (Fuji Triage) and resin-based (Clinpro) sealants among 6-9-year-old children. This split-mouth, randomized clinical trial covered 35 children/140 fully erupted permanent first molars. Evaluation was conducted by two independent examiners after 6, 12, and 18 months and the data were compared in relation to the children's caries risk and age groups. The Kaplan-Meier survival method and chi-square test were used for analysis...
July 12, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28698331/efficacy-of-conventional-treatment-with-composite-resin-and-atraumatic-restorative-treatment-in-posterior-primary-teeth-study-protocol-for-a-randomised-controlled-trial
#5
Nathalia Miranda Ladewig, Cíntia Saori Sahiara, Laysa Yoshioka, Isabel Cristina Olegário, Isabela Floriano, Tamara Kerber Tedesco, Fausto Medeiros Mendes, Mariana Minatel Braga, Daniela Procida Raggio
INTRODUCTION: Despite the widespread acceptance of conventional treatment using composite resin in primary teeth, there is limited evidence that this approach is the best option in paediatric clinics. Atraumatic restorative treatment (ART) using high-viscosity glass ionomer cement has gradually become more popular because it performs well in clinical studies, is easy to handle and is patient friendly. Therefore, the aim of this randomised clinical trial study is to compare the restoration longevity of conventional treatment using composite resin with that of ART in posterior primary teeth...
July 10, 2017: BMJ Open
https://www.readbyqxmd.com/read/28684840/prevention-of-secondary-caries-using-silver-diamine-fluoride-treatment-and-casein-phosphopeptide-amorphous-calcium-phosphate-modified-glass-ionomer-cement
#6
(no author information available yet)
Treatment of the cavity with silver diamine fluoride before placement of glass ionomer cement containing CPP-ACP enhances anticariogenic effect in vitro.
July 7, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28681046/long-term-in-vivo-effect-of-various-restorative-materials-on-enamel-and-dentin-of-primary-molars
#7
Elyiahu Mass, Alla Hassan, Ornit Cohen, Uri Zilberman
OBJECTIVE: To explore the long-term in-vivo effect of different dental restorative materials on the surrounding enamel and dentin, in primary molars. METHOD AND MATERIALS: Sixteen naturally exfoliated primary molars restored with amalgam, compomer, and glass-ionomer cement were collected after 2 to 5 years of function in the mouth. Four intact molars served as control. The teeth were sliced buccolingually and the ion content in the restorative material, the enamel, and the dentin surrounding the restoration was determined using a scanning electron microscopy-energy dispersive x-ray spectroscopy (SEM-EDS) program...
July 4, 2017: Quintessence International
https://www.readbyqxmd.com/read/28665047/external-tooth-resorption-associated-with-a-peripheral-odontogenic-fibroma-review-and-case-report
#8
Geoffrey Sinclair Heithersay, Davide Musu, Elisabetta Cotti
The purpose of the study is to document a rare case of a peripheral odontogenic fibroma with associated cervical and coronal tooth resorption in a 38-year-old female. Histopathologic features are described, the clinical management outlined and follow-up observations over 27 years detailed. The exophytic firm lesion,coral pink in appearance, located on the labial aspect of a maxillary left lateral incisor was excised, fixed in formalin and prepared for histolologic evaluation. The resorption cavity and adjacent soft tissue were treated by the topical application of trichloracetic acid prior to restoration with a glass ionomer cement and subsequent root canal treatment...
June 30, 2017: Australian Dental Journal
https://www.readbyqxmd.com/read/28663700/interleukin-6-expression-on-inflamed-rat-dental-pulp-tissue-after-capped-with-trigona-sp-propolis-from-south-sulawesi-indonesia
#9
Ardo Sabir, Andi Sumidarti
Background: Propolis is a natural product of plant resins collected by honeybees from various plant sources. It is used as a remedy in folk medicine since ancient times because of its several biological and pharmacological properties. Recently, propolis has been used by dentist to treat various oral diseases. It was always mentioned as an anti-inflammatory agent. Cytokines are proteins that provide communication between cells and play a critical role in a wide variety of processes. It released from cells in an inflammatory process that active, mediate or potential actions of other cells or tissues...
July 2017: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/28662878/bonding-over-dentin-replacement-materials
#10
Naghmeh Meraji, Josette Camilleri
INTRODUCTION: Dentin replacement materials are necessary in large cavities to protect the pulp and reduce the bulk of filling material. These materials are layered with a composite resin restorative material. Microleakage caused by poor bonding of composite resin to underlying dentin replacement material will result in pulp damage. The aim of this study was to characterize the interface between dentin replacement materials and composite resin and to measure the shear bond strength after dynamic aging...
June 26, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28650785/clinical-performance-of-heat-cured-high-viscosity-glass-ionomer-class-ii-restorations-in-primary-molars-a-preliminary-study
#11
Eliyahu Tal, Ari Kupietzky, Anna B Fuks, Nili Tickotsky, Moti Moskovitz
OBJECTIVES: The present preliminary study evaluated the clinical and radiographic performances of heat-cured high viscosity glass ionomer (HCHVGI) in class II restorations of primary molars. STUDY DESIGN: A retrospective study on a cohort of patients who had dental caries restored at a private practice was conducted. Restorations were evaluated radiographically and photographically by two separate examiners. RESULTS: Ninety-three Class II restorations in 44 patients (average age: 108 months ± 25...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28642924/influence-of-niobium-pentoxide-addition-on-the-properties-of-glass-ionomer-cements
#12
Isadora Martini Garcia, Vicente Castelo Branco Leitune, Gabriela De Souza Balbinot, Susana Maria Werner Samuel, Fabrício Mezzomo Collares
Objective: To determine the influence of niobium pentoxide (Nb2O5) addition on the physical and chemical properties of glass ionomer cements (GICs). Materials and methods: Five, 10 or 20 wt.% of Nb2O5 were incorporated into commercial GICs (Maxxion R, Vitro Molar, Vitro Fil R) and one group of each GIC remained without Nb2O5 (control groups). The GICs were evaluated by Knoop hardness, compressive strength, acid erosion, particle size and radiopacity. Data were analyzed by two-way ANOVA followed by Tukey's test...
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28642913/the-effect-of-petroleum-jelly-light-cured-varnish-and-different-storage-media-on-the-flexural-strength-of-glass-ionomer-dental-cements
#13
Kristina Gorseta, Domagoj Glavina, Tomislav Skrinjaric, Beata Czarnecka, John W Nicholson
This study determined the influence of coating with either petroleum jelly or light-cured varnish and storage medium on the flexural strength of glass-ionomer cements (GIC). The flexural strength of two glass-ionomer cements (Fuji Equia Fil and Ketac Molar Aplicap) was measured. Specimens (2 × 2 × 25 mm) were prepared in three groups: uncoated, coated with petroleum jelly, or coated with light-cured varnish (EquiaCoat) cured for 20 s using a cure lamp (Bluephase G2, Ivoclar Vivadent, Schaan, Liechtenstein)...
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28642057/novel-multifunctional-dental-cement-to-prevent-enamel-demineralization-near-orthodontic-brackets
#14
Yansong Ma, Ning Zhang, Michael D Weir, Yuxing Bai, Hockin H K Xu
OBJECTIVES: White spot lesions due to biofilm acid-induced enamel demineralization are prevalent in orthodontic treatments. The aim of this study was to develop a novel bioactive multifunctional cement with protein-repellent, antibacterial and remineralizing capabilities, and investigate the effects on enamel hardness and lesion depth in vitro for the first time. MATERIALS AND METHODS: 2-Methacryloyloxyethyl phosphorylcholine (MPC), dimethylaminohexadecyl methacrylate (DMAHDM), and nanoparticles of amorphous calcium phosphate (NACP) were incorporated into a resin-modified glass ionomer (RMGI)...
June 19, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28638560/effects-of-different-percentages-of-microhydroxyapatite-on-microhardness-of-resin-modified-glass-ionomer-and-zirconomer
#15
Farahnaz Sharafeddin, Soodabe Shoale, Mahsa Kowkabi
BACKGROUND: Hydroxyapatite (HA) is the main mineral component of the tooth structure, which exhibits considerable biological behavior and its incorporation might improve microhardness of dental materials. Microhardness of restorative materials, like glass-ionomer, is critical for the clinical longevity of restorations. The aim of this study was to evaluate the microhardness of two glass-ionomers types by incorporating different percentages of microhydroxyapatite. MATERIAL AND METHODS: In this study, 80 disc-shaped experimental specimens (6 mm in diameter, 2 mm in height) were prepared in 8 groups, including resin-modified glass-ionomer (RMGI, GC, Gold Label, Japan), zirconia-reinforced glass-ionomer (Zirconomer, Shofu, Kyoto, Japan), and their mixture with 0, 5, 15 and 25 wt% of microhydroxyapatite (Sigma-Aldrich, Germany)...
June 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28621270/influence-of-hand-instrumentation-and-ultrasonic-scaling-on-the-microleakage-of-various-cervical-restorations-an-in-vitro-study
#16
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 human first premolars were selected. In each tooth, buccal and lingual cavities (4 mm mesiodistal width, 3 mm occlusogingival height, and 2 mm depth) were made...
June 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28618104/effect-of-two-different-polishing-systems-on-fluoride-release-surface-roughness-and-bacterial-adhesion-of-newly-developed-restorative-materials
#17
Gokcen Deniz Bayrak, Nuket Sandalli, Senem Selvi-Kuvvetli, Nursen Topcuoglu, Guven Kulekci
OBJECTIVES: To evaluate the effects of two different polishing systems on fluoride release, surface roughness and bacterial adhesion of five restorative materials MATERIALS AND METHODS: The study groups were comprised of five different restorative materials, Beautifil II (B); GCP Glass Fill (G); Amalgomer CR (A); Dyract XP (D); Fuji IX GP (F) and 21 specimens were prepared from each material. Each group was divided into three subgroups according to the polishing system: Mylar (control) (C), Sof-lex (S), and Enhance-Pogo (EP)...
June 15, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28611845/novel-nanotechnology-of-tio2-improves-physical-chemical-and-biological-properties-of-glass-ionomer-cement
#18
Daniela Dellosso Cibim, Miki Taketomi Saito, Priscila Alves Giovani, Ana Flávia Sanches Borges, Vanessa Gallego Arias Pecorari, Orisson Ponce Gomes, Paulo Noronha Lisboa-Filho, Francisco Humberto Nociti-Junior, Regina Maria Puppin-Rontani, Kamila Rosamilia Kantovitz
The aim of this study was to assess the performance of glass ionomer cement (GIC) added with TiO2 nanotubes. TiO2 nanotubes [3%, 5%, and 7% (w/w)] were incorporated into GIC's (Ketac Molar EasyMix™) powder component, whereas unblended powder was used as control. Physical-chemical-biological analysis included energy dispersive spectroscopy (EDS), surface roughness (SR), Knoop hardness (SH), fluoride-releasing analysis, cytotoxicity, cell morphology, and extracellular matrix (ECM) composition. Parametric or nonparametric ANOVA were used for statistical comparisons (α ≤ 0...
2017: International Journal of Biomaterials
https://www.readbyqxmd.com/read/28609494/effect-of-three-clinical-curing-treatments-on-fluoride-release-and-surface-hardness-of-glass-ionomer-cements
#19
Dimitrios Dionysopoulos, Kosmas Tolidis, Paris Gerasimou, Thrasyvoulos Sfeikos
The purpose of this study was to investigate the effect of radiant heat, ultrasonic treatment, and 42.7 wt% CaCl₂ solution on fluoride release and surface hardness in three conventional glass-ionomer cements (GICs). The fluoride release patterns of each GIC were evaluated during a 28-day period using a fluoride ion-selective electrode. The surface hardness of the tested GICs was evaluated 24 hours after preparation of the specimens using Vickers hardness test. Statistical analysis of the data was made using analysis of variance and Bonferroni post hoc test (α = ...
July 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28598530/the-effect-of-temporary-cement-cleaning-methods-on-the-retention-of-crowns
#20
Mi-Young Song, Hongseok An, Eun-Jin Park
PURPOSE: To evaluate the effect of temporary cement cleaning methods on the retention of cemented crowns using zinc phosphate cement and resin-modified glass ionomer cement. MATERIALS AND METHODS: Forty titanium specimens were fabricated to simulate prepared molars with minimally retentive taper. The Ni-Cr cast crowns were fabricated, temporarily cemented, and separated. The specimens were divided into four groups according to the temporary cement cleaning method (n = 10) as follows: control group (no temporary cementation), orange solvent group, ultrasonic cleaning group, and air-abrasion group...
June 9, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
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