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https://www.readbyqxmd.com/read/29770926/effect-of-mouthwashes-on-the-discolouration-of-restorative-materials-commonly-used-in-paediatric-dentistry
#1
N B Ulusoy, V Arikan, A Akbay Oba
AIM: This was to investigate the effects of Klorhex, Tantum Verde, Kloroben, and Listerine on the discolouration of composite resin, compomer, giomer, and resin-modified glass ionomer. METHODS: Fifty disc-shaped specimens from each restorative material (n = 50) were prepared; initial colour values were measured with a spectrophotometer. Forty specimens from each group were placed in the four different types of mouthwashes (n = 10), while the remaining 10 specimens were immersed in distilled water for 2 min, twice a day for a period of 3 weeks...
May 16, 2018: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/29533719/viscoelastic-properties-of-contemporary-bulk-fill-restoratives-a-dynamic-mechanical-analysis
#2
Jex Ong, A U Yap, J Y Hong, A H Eweis, N A Yahya
This study investigated the viscoelastic properties of contemporary bulk-fill restoratives in distilled water and artificial saliva using dynamic mechanical analysis. The materials evaluated included a conventional composite (Filtek Z350), two bulk-fill composites (Filtek Bulk-fill and Tetric N Ceram), a bulk-fill giomer (Beautifil-Bulk Restorative), and two novel reinforced glass ionomer cements (Zirconomer [ZR] and Equia Forte [EQ]). The glass ionomer materials were also assessed with and without resin coating (Equia Forte Coat)...
May 2018: Operative Dentistry
https://www.readbyqxmd.com/read/29451649/the-effects-of-different-restorative-materials-on-periodontopathogens-in-combined-restorative-periodontal-treatment
#3
Sila Çagri Isler, Gonen Ozcan, Gülcin Akca, Zahide Kocabas
Objective The aim of the study was to evaluate the association between subgingival restorations and the target periodontopathogenic bacteria (Pg, Td and Pi) in subgingival biofilm during one year after combined restorative-periodontal treatment. Material and Methods Seventeen systemically healthy subjects, who were positive for the presence of three cervical lesions associated with gingival recessions in three different adjacent teeth, were included in the study. A total of 51 combined defects were treated with connective tissue graft plus a nanofilled composite resin (NCR+CTG), a resin-modified glass ionemer cement (RMGI+CTG) and a fluoride-releasing resin material with pre-reacted glass (PRG), called giomer (Giomer+CTG)...
2018: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29414474/effects-of-water-and-microbial-based-aging-on-the-performance-of-three-dental-restorative-materials
#4
Xinxuan Zhou, Suping Wang, Xian Peng, Yao Hu, Biao Ren, Mingyun Li, Liying Hao, Mingye Feng, Lei Cheng, Xuedong Zhou
The objective of this study was to evaluate the performance changes of three restorative materials before and after three different aging treatments: storage in distilled water, Streptococcus mutans (S. mutans) and oral salivary microbes suspensions for one month. Resin composite (RC), giomer and glass ionomer cement (GIC) were chosen for aging procedures. Surface morphology, roughness average (Ra), color changes and mechanical properties were all determined before and after aging respectively. Biomass and metabolism difference of early attached biofilm on the material surface were tested through 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and lactic acid measurement...
April 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29386787/fracture-resistance-of-posterior-teeth-restored-with-high-viscosity-bulk-fill-resin-composites-in-comparison-to-the-incremental-placement-technique
#5
Vibha Hegde, Amrita Vilas Sali
Aim: Comparative evaluation of the fracture resistance of maxillary premolar teeth restored with two high-viscosity bulk-fill composites and incrementally placed composite. Materials and Methods: Seventy-five freshly extracted maxillary premolar teeth were selected. Fifteen specimens served as positive control (Group 1). Mesio-occluso-distal cavity preparation was prepared on the rest of the specimens. These specimens were further divided into four groups: unrestored teeth (Group 2), teeth restored with incrementally placed nanocomposite (Group 3), teeth restored with high-viscosity bulk-fill giomer (Group 4), and teeth restored with high-viscosity bulk-fill nanocomposite (Group 5)...
September 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29364336/structural-and-mechanical-properties-of-a-giomer-based-bulk-fill-restorative-in-different-curing-conditions
#6
COMPARATIVE STUDY
Mustafa Sarp Kaya, Meltem Bakkal, Ali Durmus, Zehra Durmus
The main goal of this study was to compare the polymerization degree of bulk-fill giomer resin cured with three different light-curing units (LCUs): a polywave third-generation (Valo); a monowave (DemiUltra: DU); and a second-generation LED (Optima 10: Opt) LCUs by using structural and mechanical properties. Giomer samples of 2 and 4 mm cured with three LCUs were employed in vitro analysis. The degree of curing (DC%) was determined with Fourier-Transform Infrared Spectroscopy (FTIR). Microstructural features were observed with scanning electron microscopy (SEM)...
January 18, 2018: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29279627/one-year-comparative-evaluation-of-ketac-nano-with-resin-modified-glass-ionomer-cement-and-giomer-in-noncarious-cervical-lesions-a-randomized-clinical-trial
#7
Bollu Indira Priyadarshini, Thumu Jayaprakash, Bolla Nagesh, Chukka Ram Sunil, Varri Sujana, Velagala L Deepa
Aim: The purpose of this study was to evaluate the clinical performance of Ketac Nano (Ketac™ N100), RMGIC (Fuji Filling™ LC), and Giomer (Beautifil® II) in noncarious cervical lesions (NCCLs). Materials and Methods: One operator restored 120 NCCLs in 20 subjects, with at least two lesions restored with one of the restorative materials: RMGIC (control group), Giomer and Ketac Nano (experimental groups). Two observers evaluated retention, marginal discoloration, marginal adaptation, color match, surface roughness, and postoperative sensitivity using modified USPHS criteria at baseline, 6, and 12 months...
May 2017: Journal of Conservative Dentistry: JCD
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
#8
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
#9
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...
January 30, 2018: 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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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