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Giomer

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https://www.readbyqxmd.com/read/28872994/comparison-of-cytotoxicity-of-new-nanohybrid-composite-giomer-glass-ionomer-and-silver-reinforced-glass-ionomer-using-human-gingival-fibroblast-cell-line
#1
Fatemeh Koohpeima, Mohammad Javad Mokhtari, Maryam Doozandeh, Zahra Jowkar, Fatemeh Yazdanshenas
AIM: The objective of this study was to investigate the cytotoxic effects of new nanohybrid composite, giomer, conventional and resin modified and silver reinforced glass ionomer cements and compare the biocompatibility of these dental materials in cell culture. STUDY DESIGN: Five cylindrical specimens were made of each material, using a mold (2mm. thick and 5 mm in diameter). For HGF, cells were cultured in RPMI-1640 medium. After attaining 80% confluence, cells were treated with different doses of five tested materials for 24h...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28845033/microleakage-and-penetration-depth-of-different-fissure-sealant-materials-after-cyclic-thermo-mechanic-and-brushing-simulation
#2
Hüseyin Hatirli, Bilal Yasa, Elif Yasa
The aim of the study was to evaluate microleakage and the penetration-depths of different fissure-sealant materials applied with/without enameloplasty after cyclic aging. One-hundred-sixty mandibular molars were divided into non-invasive and enameloplasty preparation groups and eight material subgroups, including: flowable composites (microhyrid, nanohybrid, and nanofilled), three resin-based (unfilled, filled, and highly-filled), a giomer-based, and a glass-ionomer-based fissure sealant. Specimens were subjected to two-year cyclic chewing and brushing simulation...
August 25, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28828159/shear-bond-strengths-of-composite-resin-and-giomer-to-mineral-trioxide-aggregate-at-different-time-intervals
#3
Amir-Ahmad Ajami, Mahmoud Bahari, Arezoo Hassanpour-Kashani, Mehdi Abed-Kahnamoui, Ayda Savadi-Oskoee, Farhad Azadi-Oskoee
BACKGROUND: The efficacy of the bond between the restorative materials and the pulp capping materials has an important role in the success of vital pulp therapy. Therefore, the aim of this study was to evaluate the shear bond strength of composite resin and giomer to MTA at different time intervals after mixing of MTA. MATERIAL AND METHODS: Ninety cylindrical MTA samples were prepared and assigned to two groups (n=45) based on the restorative materials used (composite resin or giomer)...
July 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28752095/a-deep-morphological-characterization-and-comparison-of-different-dental-restorative-materials
#4
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/28729788/a-comparative-in-vitro-study-on-fluoride-release-and-water-sorption-of-different-flowable-esthetic-restorative-materials
#5
Asmaa Youssif Harhash, Iman Ibrahim ElSayad, Ahmad G S Zaghloul
OBJECTIVES: The objective of the study was to evaluate fluoride release and water sorption of three flowable esthetic restorative materials: a giomer, a fluoride-releasing resin composite, and a nonfluoridated resin composite. MATERIALS AND METHODS: Ten samples from a giomer, a fluoride releasing nano-hybrid, and a nonfluoridated nano-hybrid composite were prepared and immersed in deionized water. Fluoride measurements were done using an ion-specific electrode attached to a microprocessor-based fluoride meter after 1 day, 1 week, and 4 weeks...
April 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28605721/dynamic-analysis-of-bulk-fill-composites-effect-of-food-simulating-liquids
#6
Ahmed Hesham Eweis, Adrian U-Jin Yap, Noor Azlin Yahya
This study investigated the effect of food simulating liquids on visco-elastic properties of bulk-fill restoratives using dynamic mechanical analysis. One conventional composite (Filtek Z350 [FZ]), two bulk-fill composites (Filtek Bulk-fill [FB] and Tetric N Ceram [TN]) and a bulk-fill giomer (Beautifil-Bulk Restorative [BB]) were evaluated. Specimens (12 × 2 × 2mm) were fabricated using customized stainless steel molds. The specimens were light-cured, removed from their molds, finished, measured and randomly divided into six groups...
October 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28512545/effect-of-hemostatic-agent-on-marginal-gaps-of-class-v-giomer-restorations
#7
Soodabeh Kimyai, Fatemeh Pournaghi-Azar, Narmin Mohammadi, Mahdieh Babri
BACKGROUND: Contamination of dentin with hemostatic agents might exert a deleterious effect on adhesive procedures on dentin. The present study was undertaken to investigate the effect of aluminum chloride hemostatic agent on marginal gaps in Cl V giomer restorations. MATERIAL AND METHODS: Fifty sound bovine permanent incisors were selected for the purpose of this in vitro study and Cl V cavities were prepared on their buccal surfaces; the gingival margins of the cavities were placed in dentin...
May 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28469816/reparability-of-giomer-using-different-mechanical-surface-treatments
#8
Saba Arami, Soodabeh Kimyai, Parnian-Alizadeh Oskoee, Mehdi Daneshpooy, Sahand Rikhtegaran, Mahmoud Bahari, Mehdi-Abed Kahnamoii
BACKGROUND: In the repair process achieving high bond strength between the new and old resin based materials is necessary for clinical longevity. This study compared the effect of three different mechanical surface treatments (air abrasion, Nd:YAG laser and diamond bur) on the repair bond strength of giomer. MATERIAL AND METHODS: In this in vitrostudy, 125 cylindrical giomer samples were used. The giomer samples were randomly assigned to 5 groups (n=25). In group 1, the samples did not undergo any surface treatment...
April 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28422601/degradation-of-resin-restorative-materials-by-streptococcus-mutans-a-pilot-study
#9
Ankit K Gautam, Ruchi Thakur, N D Shashikiran, Singla Shilpy, Nikita Agarwal, Shilpi Tiwari
OBJECTIVE: To evaluate the degradation of three resin based restorative materials by S Mutans. STUDY DESIGN: Class I cavity was prepared in extracted premolars and were randomly divided into 3 groups (Group I - Conventional composite (CC), Group II - Resin Modified GIC and Group III-Giomer). Teeth were then restored by respective restorative material and equally divided in two subgroups (Control and Experimental). Experiment subgroup samples were then incubated in 2 ml of BHI with 1:10 dilution of SM (MTCC-497) grown overnight in BHI whereas control subgroup samples were incubated in BHI without SM...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28253189/microleakage-and-shear-bond-strength-of-a-new-sealant-containing-prereacted-glass-ionomer-particles
#10
Samuel N Durham, Erik J Meyers, Clifton W Bailey, Kraig S Vandewalle
A new fluoride-releasing sealant system is claimed to allow easier and faster placement while providing high bond strengths without the need for phosphoric acid etching. A study was designed to compare the microleakage and shear bond strength of a self-etching, Giomer-based sealant system with those of a traditional resin sealant. Group 1 received traditional sealant applied after use of a 35% phosphoric acid etchant; group 2 received Giomer sealant after use of a self-etching primer; and group 3 received Giomer sealant after the addition of an initial phosphoric acid etching step and placement of the primer...
March 2017: General Dentistry
https://www.readbyqxmd.com/read/28210444/effect-of-two-different-tooth-bleaching-techniques-on-microhardness-of-giomer
#11
Soodabeh Kimyai, Mahmoud Bahari, Fereshteh Naser-Alavi, Soodabeh Behboodi
BACKGROUND: Tooth bleaching is a safe and conservative treatment modality to improve the esthetic appearance of discolored teeth. One of the problems with the use of bleaching agents is their possible effect on surface microhardness of resin-based materials. The present study was carried out to evaluate the effect of in-office and at-home bleaching on surface microhardness of giomer. MATERIAL AND METHODS: Seventy-five disk-shaped giomer samples (Beautifil II) were prepared and cured with a light-curing unit...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28210436/effect-of-disinfecting-the-cavity-with-chlorhexidine-on-the-marginal-gaps-of-cl-v-giomer-restorations
#12
Soodabeh Kimyai, Fatemeh Pournaghi-Azar, Fereshteh Naser-Alavi, Ashkan Salari
BACKGROUND: Considering the effect of cavity disinfecting agents on the bonding and sealing ability of restorations bonded to dentin, the aim of this study was to evaluate the effect of chlorhexidine (CHX) disinfecting agent on the marginal gaps of Cl V giomer restorations. MATERIAL AND METHODS: Cl V cavities were prepared on the buccal surfaces of 60 sound bovine permanent incisors in this in vitro study, with the occlusal and gingival margins in enamel and dentin, respectively...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28154317/depth-of-cure-flexural-properties-and-volumetric-shrinkage-of-low-and-high-viscosity-bulk-fill-giomers-and-resin-composites
#13
Akimasa Tsujimoto, Wayne W Barkmeier, Toshiki Takamizawa, Mark A Latta, Masashi Miyazaki
The purpose of this study was to investigate the depth of cure, flexural properties and volumetric shrinkage of low and high viscosity bulk-fill giomers and resin composites. Depth of cure and flexural properties were determined according to ISO 4049, and volumetric shrinkage was measured using a dilatometer. The depths of cure of giomers were significantly lower than those of resin composites, regardless of photo polymerization times. No difference in flexural strength and modulus was found among either high or low viscosity bulk fill materials...
March 31, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28002693/degree-of-conversion-and-polymerization-shrinkage-of-bulk-fill-resin-based-composites
#14
P Yu, Auj Yap, X Y Wang
This study evaluated the degree of conversion (DC) and polymerization shrinkage (PS) of contemporary bulk-fill resin-based composites (RBCs) including giomer materials. Two giomer bulk-fill (Beautifil Bulk Restorative [BBR], Beautifil Bulk Flowable [BBF]), two nongiomer bulk-fill (Tetric N-Ceram Bulk-fill [TNB], Smart Dentin Replacement [SDR]), and three conventional non-bulk-fill (Beautifil II [BT], Beautifil Flow Plus [BF], Tetric N-Ceram [TN]) RBCs were selected for the study. To evaluate the DC, disc-shaped specimens of 5-mm diameter and 2-mm, 4-mm, and 6-mm thickness were fabricated using customized Teflon molds...
January 2017: Operative Dentistry
https://www.readbyqxmd.com/read/27686259/local-deformation-fields-and-marginal-integrity-of-sculptable-bulk-fill-low-shrinkage-and-conventional-composites
#15
Vesna Miletic, Dejan Peric, Milos Milosevic, Dragica Manojlovic, Nenad Mitrovic
OBJECTIVE: To compare strain and displacement of sculptable bulk-fill, low-shrinkage and conventional composites as well as dye penetration along the dentin-restoration interface. METHODS: Modified Class II cavities (N=5/group) were filled with sculptable bulk-fill (Filtek Bulk Fill Posterior, 3M ESPE; Tetric EvoCeram Bulk Fill, Ivoclar Vivadent; fiber-reinforced EverX Posterior, GC; giomer Beautifil Bulk, Schofu), low-shrinkage (Kalore, GC), nanohybrid (Tetric EvoCeram, Ivoclar Vivadent) or microhybrid (Filtek Z250, 3M ESPE) composites...
September 26, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/27563182/effects-of-thermal-fatigue-on-shear-punch-strength-of-tooth-colored-restoratives
#16
Fam Mei Shi Melody, Yap Adrian U-Jin, Tan Wei Min Natalie, Tay Wan Ling Elizabeth, Jessica Yeo Siu Chien
AIMS: This study investigated the effect of thermal fatigue on the shear strength of a range of tooth-colored restorative materials including giomers, zirconia-reinforced glass ionomer cement (GIC), nano-particle resin-modified GIC, highly viscous GICs, and composite resin. MATERIALS AND METHODS: Twenty specimens of each material were fabricated in standardized washers (17 mm outer diameter, 9 mm internal diameter, 1 mm thick). The specimens were cured, stored in 100% humidity at 37...
July 2016: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/27461814/a-comparative-evaluation-of-microleakage-and-compressive-strength-of-ketac-molar-giomer-zirconomer-and-ceram-x-an-in-vitro-study
#17
Rashmeet Walia, Purshottam Jasuja, Kanika Gupta Verma, Suruchi Juneja, Aditi Mathur, Lovejeet Ahuja
BACKGROUND: Microleakage around dental restorative material and strength to withstand the masticatory forces is major problem in dentistry. Instead, many new materials available, very few actually bond to tooth surface and bear masticatory load. AIM: The aim of this study is to evaluate and compare the microleakage and compressive strength of Ketac Molar, Giomer, Zirconomer, and Ceram-x. MATERIALS AND METHODS: For the evaluation of microleakage, Class V cavities were prepared on sixty human premolar teeth and divided into four study groups (n = 15): Group I (Ketac Molar), Group II (Giomer), Group III (Zirconomer), and Group IV (Ceram-x)...
July 2016: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/27461806/color-stability-of-esthetic-restorative-materials-used-in-pediatric-dentistry-an-in-vitro-study
#18
Hanisha Adusumilli, Jogendra Sai Sankar Avula, Pranitha Kakarla, Sujatha Bandi, George Manoj Kumar Mallela, Krishna Vallabhaneni
BACKGROUND: Children consume foods that are colorful which contain food additives that stain not only the tooth structure but also the restorations. As esthetics is of prime concern for both parents and children nowadays, long-term color stability of restorative materials is of utmost importance. AIM: To evaluate the color stability of two tooth-colored restorative materials (conventional glass ionomer cement [GIC] and giomer) when immersed in various consumable drinks and food (aerated beverage, ice candy, and health drink) at different immersion periods (low, moderate, and high)...
July 2016: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/27437363/comparative-evaluation-of-microleakage-between-nano-ionomer-giomer-and-resin-modified-glass-ionomer-cement-in-class-v-cavities-clsm-study
#19
Indira Priyadarshini Bollu, Archana Hari, Jayaprakash Thumu, Lakshmi Deepa Velagula, Nagesh Bolla, Sujana Varri, Srikanth Kasaraneni, Siva Venkata Malathi Nalli
INTRODUCTION: Marginal integrity of adhesive restorative materials provides better sealing ability for enamel and dentin and plays an important role in success of restoration in Class V cavities. Restorative material with good marginal adaptation improves the longevity of restorations. AIM: Aim of this study was to evaluate microleakage in Class V cavities which were restored with Resin Modified Glass Ionomer Cement (RMGIC), Giomer and Nano-Ionomer. MATERIALS AND METHODS: This in-vitro study was performed on 60 human maxillary and mandibular premolars which were extracted for orthodontic reasons...
May 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27146702/lack-of-buffering-by-composites-promotes-shift-to-more-cariogenic-bacteria
#20
I Nedeljkovic, J De Munck, V Slomka, B Van Meerbeek, W Teughels, K L Van Landuyt
Secondary caries (SC) remains a very important problem with composite restorations. The objectives of this study were to test the acid-buffering ability of several restorative materials and to evaluate whether buffering of the restorative material has an impact on the microbial composition of the biofilm. Disk-shaped specimens of conventional composite, composite with surface prereacted glass-ionomer filler particles (so-called giomer), glass-ionomer cement (GIC), amalgam, and hydroxyapatite (HAp) (control) were exposed to aqueous solutions with pH 4, 5, 6, and 7 and to the medium containing bacteria-produced acids, and pH changes were recorded over several days...
July 2016: Journal of Dental Research
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