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American Journal of Dentistry

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https://www.readbyqxmd.com/read/29251459/phosphate-buffer-stabilized-0-1-chlorine-dioxide-oral-rinse-for-managing-medication-related-osteonecrosis-of-the-jaw
#1
REVIEW
Srinivas Rao Myneni Venkatasatya, Howard H Wang, Swetha Alluri, Sebastian G Ciancio
PURPOSE: This is a review of the literature on nonsurgical treatment of non-healing medication related osteonecrosis of the jaw (MRONJ) utilizing a phosphate buffer-stabilized 0.1% chlorine dioxide mouthrinse. METHODS: A literature search in PubMed revealed only six case reports. MRONJ lesion site description, patient's medication history, the healing time, and the MRONJ treatment protocol followed by those authors were recorded. Additional literature review of the scientific mechanism, risks and benefits, safety and efficacy of the phosphate buffer-stabilized 0...
December 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29251458/effect-of-instruction-light-curing-unit-and-location-in-the-mouth-on-the-energy-delivered-to-simulated-restorations
#2
Sara Samaha, Sapan Bhatt, Matthew Finkelman, Aikaterini Papathanasiou, Ronald Perry, Howard Strassler, Gerard Kugel, Franklin Garcia-Godoy, Richard Price
PURPOSE: To determine the amount of energy (Joules/cm²) delivered by students to simulated restorations in a patient simulator based on the restoration location, the curing light unit used, and before vs. after instruction on how to improve their light curing technique. METHODS: 30 dental students "light cured" two simulated restorations (that were 1-mm deep anterior and 4-mm deep posterior) using three light-curing units (LCUs) : VALO, Bluephase G2, and Optilux 401...
December 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29251457/efficacy-of-an-experimental-3-potassium-nitrate-mouthwash-in-providing-long-term-relief-from-dentin-hypersensitivity-an-8-week-randomized-controlled-study-study-2
#3
Claire Hall, Farzana Sufi, Paul Constantin
PURPOSE: To evaluate the efficacy of an experimental mouthwash containing 3% potassium nitrate (KNO3) in the relief of dentin hypersensitivity when used as an adjunct to brushing with fluoride toothpaste compared with the use of the same toothpaste alone. METHODS: This was a randomized, two-treatment, examiner-blind, parallel-design single-center, 8-week study in healthy subjects with self-reported and clinically diagnosed dentin hypersensitivity. Subjects were randomized to receive either fluoride toothpaste plus 3...
December 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29251456/efficacy-of-different-protocols-for-at-home-bleaching-a-randomized-clinical-trial
#4
Iria López Darriba, Lourdes Novoa, Víctor Alonso de la Peña
PURPOSE: To evaluate the efficacy of two products used for at-home bleaching with different application times. METHODS: 80 participants were enrolled and divided into four groups, (1) 10% carbamide peroxide 1 hour a day; (2) 10% carbamide peroxide overnight; (3) 7.5% hydrogen peroxide 1 hour a day; and (4) 7.5% hydrogen peroxide overnight. The duration of treatment was 14 days. Color measurement was performed using a dental spectrophotometer on the right maxillary central incisor and the canine, at baseline and 2 weeks after...
December 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29251455/effect-of-various-teas-on-color-stability-of-resin-composites
#5
Gül Dinç Ata, Osman Gokay, Arzu Müjdeci, Tugba Congara Kivrak, Armin Mokhtari Tavana
PURPOSE: To investigate the effect of various teas on color stability of resin composites. METHODS: Two methacrylate-based (Arabesk Top, Grandio) and a silorane-based (Filtek Silorane) resin composites were used. 110 cylindrical samples of each resin composite were prepared (2 mm thickness and 8 mm diameter), polished and stored in distilled water (37°C for 24 hours). They were randomly divided into 11 groups (n= 10) and color measurements were taken. Then the samples were immersed in tap water (control), a black tea, a green tea or one of the eight herbal-fruit teas (37°C for 1 week) and subsequently subjected to the final color measurements...
December 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29251454/effects-of-cigarette-smoking-on-color-stability-of-dental-resin-composites
#6
Xiaoyi Zhao, Filippo Zanetti, Shoaib Majeed, Jie Pan, Hans Malmstrom, Manuel C Peitsch, Julia Hoeng, Yanfang Ren
PURPOSE: To evaluate the effect of simulated toothbrush abrasion on the surface gloss, the surface roughness and the color stability of incrementally-filled and bulk-fill composites. METHODS: 48 dimensionally standardized composite specimens (n= 8/group) were made from four incrementally-filled composites (Tetric EvoCeram, IPS Empress Direct Enamel, Ceram X mono and Arabesk) and two bulk-fill composites (Quix fil and Tetric EvoCeram Bulk). Before and after toothbrushing simulation the surface gloss was measured by a glossmeter, the surface roughness was evaluated with a profilometer, and the color was measured using a spectrophotometer...
December 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29251453/an-induced-extrinsic-tooth-stain-prevention-model-to-investigate-whitening-potential-of-sugar-free-chewing-gums
#7
Michael Wj Dodds, Minmin Tian, Lilian Ramirez, Jeffery L Milleman, Kimberly R Milleman, Howard M Proskin
PURPOSE: To establish an accelerated clinical test method to evaluate the effectiveness of sugar-free gums in prevention of the formation of extrinsic stains when chewed over a 2-week period in conjunction with daily tooth brushing. A secondary objective was to compare three methods for measuring extrinsic stain. METHODS: 25 healthy adult volunteers were enrolled in a single center, examiner blind, randomized 4-way crossover clinical study. Starting with a stain-free baseline, subjects rinsed five times daily with freshly brewed black tea, followed either by chewing one of three different gums for 12 minutes or not chewing (negative control)...
December 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29251452/fluoride-release-and-re-release-from-a-bioactive-restorative-material
#8
Elizabeth May, Kevin J Donly
PURPOSE: To compare the amount of fluoride release and re-release of three different restorative materials. METHODS: The three restorative materials included a resin-based composite (Z100TM, 3M-ESPE), a resin-modified glass ionomer cement (VitremerTM, 3M-ESPE) and a bioactive material (Activa Bioactive-RestorativeTM, Pulpdent,). Ten disks were fabricated from each material. The disks were immersed in deionized water and stored. Samples were taken from each vial on Days 1, 7, 14 and 30 for fluoride ion analysis...
December 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29251451/cad-cam-post-and-core-using-different-esthetic-materials-fracture-resistance-and-bond-strengths
#9
Denis Roberto Falcão Spina, Rogério Goulart da Costa, Isabelli Carolini Farias, Leonardo Gonçalves da Cunha, André Vicente Ritter, Carla Castiglia Gonzaga, Giselle Maria Correr
PURPOSE: To evaluate the fracture resistance (FR), and push-out bond strengths (BS) of custom-made CAD/CAM post-and-cores manufactured with different esthetic materials. METHODS: 90 single-rooted extracted teeth were selected, endodontically treated and prepared to receive the posts. The specimens were randomly divided into three equal groups according to the material: hybrid ceramic Vita Enamic (HC); nano-ceramic resin composite Lava Ultimate (RC); and experimental epoxy-resin reinforced by glass-fiber (FG)...
December 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29251450/correspondence-between-fiber-post-and-drill-dimensions-for-post-canal-preparation
#10
Ricardo Pablo Portigliatti, José Luis Tumini, Alejandro Daniel Bertoldi Hepburn, Romina Flavia Aromando, Jorge Lorenzo Olmos
PURPOSE: To compare fiber posts of several calibers and trademarks to their corresponding root canal preparation drills. METHODS: Three widely used endodontic post brands and their drills were evaluated: Exacto, ParaPost Taper Lux, and Macro-Lock Illusion X-RO. Fiber posts and drills were microphotographed with a scanning electron microscope and images were analyzed using ImageJ image processing software. Fiber post diameter on apical extreme (Pd0), fiber post diameter at 5 mm from the apical extreme (Pd5), drill diameter on apical extreme (Dd0) and drill diameter at 5 mm from the apical extreme (Dd5) were analyzed...
December 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29178733/the-role-of-adhesive-materials-and-oral-biofilm-in-the-failure-of-adhesive-resin-restorations
#11
REVIEW
Roberto Pinna, Paolo Usai, Enrica Filigheddu, Franklin Garcia-Godoy, Egle Milia
PURPOSE: To critically discuss adhesive materials and oral cariogenic biofilm in terms of their potential relevance to the failures of adhesive restorations in the oral environment. METHODS: The literature regarding adhesive restoration failures was reviewed with particular emphasis on the chemistry of adhesive resins, weakness in dentin bonding, water fluids, cariogenic oral biofilm and the relations that influence failures. Particular attention was paid to evidence derived from clinical studies...
October 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29178732/comparison-of-enamel-bond-fatigue-durability-of-universal-adhesives-and-two-step-self-etch-adhesives-in-self-etch-mode
#12
Akimasa Tsujimoto, Wayne W Barkmeier, Yumiko Hosoya, Kie Nojiri, Yuko Nagura, Toshiki Takamizawa, Mark A Latta, Masashi Miyazaki
PURPOSE: To comparatively evaluate universal adhesives and two-step self-etch adhesives for enamel bond fatigue durability in self-etch mode. METHODS: Three universal adhesives (Clearfil Universal Bond; G-Premio Bond; Scotchbond Universal Adhesive) and three two-step self-etch adhesives (Clearfil SE Bond; Clearfil SE Bond 2; OptiBond XTR) were used. The initial shear bond strength and shear fatigue strength of the adhesive to enamel in self-etch mode were determined...
October 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29178731/clinical-effect-of-a-manual-toothbrush-with-tapered-filaments-on-dental-plaque-and-gingivitis-reduction
#13
Longxing Ni, Rongying Tang, Tao He, Jinlan Chang, Jiahui Li, Sarah Li, Renzo Alberto Ccahuana-Vasquez, Richard Cheng, Julie Grender
PURPOSE: To evaluate the anti-plaque efficacy (Study 1) and the anti-gingivitis efficacy (Study 2) of a manual toothbrush with tapered bristles compared to marketed control manual toothbrushes. METHODS: Studies 1 and 2 were independent, randomized and controlled, single-center, examiner-blind clinical trials in generally healthy adults. Study 1 included a 2-day acclimation period, followed by a 5-day twice daily toothbrushing test phase with the assigned brush. Baseline and Day 5 pre- and post-brushing plaque levels were assessed via Turesky Modified Quigley-Hein Plaque Index (TMQHPI)...
October 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29178730/a-clinical-randomized-double-blind-study-on-the-use-of-toothpastes-immediately-after-at-home-tooth-bleaching
#14
Christiane de Melo Alencar, Ranna Castro da Silva, Jusuína Lamartine Nogueira Araújo, Ana Daniela Silva da Silveira, Cecy Martins Silva
PURPOSE: To evaluate the effect of 5% potassium nitrate containing 2% sodium fluoride and 10% strontium chloride on tooth sensitivity and color change after at-home bleaching treatment across 3 months of follow-up. METHODS: 60 subjects were randomly allocated by numerical draw into three groups (n= 20): (1) Control, treated with 22% carbamide peroxide (CP) followed by application of a toothpaste without active ingredient: (2) Nitrate, treated with 22% CP followed by application of a toothpaste containing 5% potassium nitrate and 2% sodium fluoride: (3) Strontium, treated with 22% CP followed by application of a toothpaste containing 10% strontium chloride...
October 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29178729/surface-properties-and-color-stability-of-incrementally-filled-and-bulk-fill-composites-after-in-vitro-toothbrushing
#15
Guangyun Lai, Liya Zhao, Jun Wang, Karl-Heinz Kunzelmann
PURPOSE: To evaluate the effect of simulated toothbrush abrasion on the surface gloss, the surface roughness and the color stability of incrementally-filled and bulk-fill composites. METHODS: 48 dimensionally standardized composite specimens (n= 8/group) were made from four incrementally-filled composites (Tetric EvoCeram, IPS Empress Direct Enamel, Ceram X mono and Arabesk) and two bulk-fill composites (Quix fil and Tetric EvoCeram Bulk). Before and after toothbrushing simulation the surface gloss was measured by a glossmeter, the surface roughness was evaluated with a profilometer, and the color was measured using a spectrophotometer...
October 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29178728/a-randomized-clinical-study-to-evaluate-the-effect-of-an-ultra-low-abrasivity-dentifrice-on-extrinsic-dental-stain
#16
Sarah Young, Stephen Mason, Jeffery L Milleman, Kimberly R Milleman
PURPOSE: To investigate the stain-removal efficacy of an experimental ultra-low abrasivity anti-sensitivity dentifrice containing sodium tripolyphosphate (STP) and a cocamidopropyl betaine/sodium methyl cocoyl taurate detergent system. METHODS: This was a single-center, examiner-blind, randomized, parallel-group study. Extrinsic dental stain was assessed on the facial surfaces of the six maxillary and six mandibular anterior teeth and the lingual surfaces of the six mandibular anterior teeth using the Macpherson modification of the Lobene Stain Index (MLSI)...
October 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29178727/performance-of-cad-cam-fabricated-fiber-posts-in-oval-shaped-root-canals-an-in-vitro-study
#17
Nino Tsintsadze, Jelena Juloski, Michele Carrabba, Marella Tricarico, Cecilia Goracci, Alessandro Vichi, Marco Ferrari, Simone Grandini
PURPOSE: To assess the push-out strength, the cement layer thickness and the interfacial nanoleakage of prefabricated fiber posts, CAD/CAM fiber posts and metal cast posts cemented into oval-shaped root canals. METHODS: Oval-shaped post spaces were prepared in 30 single-rooted premolars. Roots were randomly assigned to three groups (n=10), according to the post type to be inserted: Group 1: Prefabricated fiber post (D.T. Light-Post X-RO Illusion); Group 2: Cast metal post; Group 3: CAD/CAM-fabricated fiber post (experimental fiber blocks)...
October 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29178726/shear-bond-strength-of-different-materials-used-as-core-build-up-to-ceramic
#18
Bledar Lilaj, Alexander Franz, Viktoria Dangl, Rinet Dauti, Andreas Moritz, Barbara Cvikl
PURPOSE: To determine the performance of a resin composite material specially developed for core build-ups in comparison with conventional restorative materials. METHODS: 90 roughened ceramic blocs were divided into three groups; one group (n=30) was used for the core build-up material (Gradia Core) and the other two groups (n=30, each) were used for two conventional restorative materials (Tetric EvoCeram, Compoglass F). After adhesive fixation, specimens of each material were subdivided in accordance with the storage conditions (thermocycling or water storage)...
October 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29178725/efficacy-of-an-anti-discoloration-system-ads-in-a-0-12-chlorhexidine-mouthwash-a-triple-blind-randomized-clinical-trial
#19
Elena Maria Varoni, Marco Gargano, Nicola Ludwig, Giovanni Lodi, Andrea Sardella, Antonio Carrassi
PURPOSE: To determine the efficacy of an anti-discoloration system (ADS) in a 0.12% chlorhexidine (CHX) mouthwash to reduce dental discoloration. METHODS: A triple-blind, cross-over, randomized clinical trial was carried out in 22 healthy volunteers asked to perform oral rinses, twice a day for 21 days, using 0.12% CHX mouthwashes containing or not ADS (wash-out= 21 days). Dental discolorations were compared via spectroscopy (ΔE), and direct visual examination performed by the dentist and volunteers themselves...
October 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29178706/stress-distribution-of-bulk-fill-resin-composite-in-class-ii-restorations
#20
Pietro Ausiello, Stefano Ciaramella, Franklin Garcia-Godoy, Massimo Martorelli, Roberto Sorrentino, Antonio Gloria
PURPOSE: To study the influence of the resin bonding layer thickness and the bulk filling material stiffness in adhesive class II mesio-occlusal-distal (MOD) restorations using numerical finite element analysis (FEA). METHODS: Four 3D-FE models of teeth restored with different filling material stiffness and resin bonding layer thickness were built-up and analyzed. The 3D model of a sound lower molar was also analyzed and compared with restored ones. The tooth tissues (enamel, dentin), dental restoration and bolus on the occlusal surface, was divided into 3D solid CTETRA elements with four grid points...
August 2017: American Journal of Dentistry
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