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https://www.readbyqxmd.com/read/29140371/biofunctionalization-of-titanium-granules-with-simvastatin-for-improving-osteogenic-activity-and-antibacterial-properties-ex-vivo-study
#1
Zahra Gorgin Karaji, Behzad Houshmand, Shahsanam Abbasi, Sara Shafiei, Shahab Faghihi
PURPOSE: Titanium-based biomaterials present good biocompatibility, while their osseointegration and antibacterial properties need to be improved. This study aimed to enhance the bone-bonding ability of titanium-based granules, which are intended to be used as bone graft. MATERIALS AND METHODS: The titanium granules were anodized in ethylene glycol-based electrolyte and subsequently annealed to be loaded separately with simvastatin. The samples were then inspected with attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) for drug loading...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29128350/biomechanical-behavior-of-adhesive-cement-layer-and-periodontal-tissues-on-the-restored-teeth-with-zirconia-rbfdps-using-three-kinds-of-framework-design-3d-fea-study
#2
Ayana Uraba, Reina Nemoto, Kosuke Nozaki, Tasuku Inagaki, Satoshi Omori, Hiroyuki Miura
PURPOSE: To investigate stress and strain concentrations on resin-bonded fixed dental prostheses (RBFDPs) frameworks of different design using finite element analysis. METHODS: A human dry skull was scanned and models were produced using three-dimensional printer. After abutment preparation, three frameworks, including a three-unit RBFDP, and two-unit cantilevered RBFDPs using #21 and #23 for the abutment tooth, were fabricated. Scanned data were subtracted to define boundary of each structure...
November 8, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29109829/cytotoxicity-of-etch-and-rinse-self-etch-and-universal-dental-adhesive-systems-in-fibroblast-cell-line-3t3
#3
Yasmine Mendes Pupo, Cintia Fernanda de Freitas Bernardo, Francielly Fernanda de Freitas A de Souza, Milton Domingos Michél, Camila Nunes de Morais Ribeiro, Sandro Germano, Daniela Florencio Maluf
The aim of this study was to evaluate in fibroblast cultures the direct cytotoxic effects of etch-and-rinse, self-etch, and universal adhesive systems. The sterile glass cover slips (n = 3) were then immersed in culture medium to obtain the eluates for the experimental groups: (1) Adper™ Single Bond 2; (2) Ambar; (3) Adper™ Scotchbond™ Multi-Purpose; (4) Scotchbond™ Universal; (5) Ambar Universal; and (6) OptiBond All-In-One. As a negative control, sterile glass cover slips were immersed in culture medium only...
2017: Scanning
https://www.readbyqxmd.com/read/29109338/effect-of-dentin-surface-modification-using-carbon-nanotubes-on-dental-bonding-and-antibacterial-ability
#4
Lai Suo, Zhongjie Li, Feng Luo, Junyu Chen, Lingling Jia, Tong Wang, Xibo Pei, Qianbing Wan
This study developed carbon nanotube coatings for the dentin surface and investigated the bonding strength and the in vitro antibacterial properties of carbon nanotube-coated dentin. Single-walled carbon nanotubes and multi-walled carbon nanotubes were first modified and then characterized using Fourier-transform infrared spectroscopy, scanning electron microscope, and transmission electron microscopy. Second, dentin samples were coated using either single-walled carbon nanotubes or multi-walled carbon nanotubes and observed under a scanning electron microscope...
November 3, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/29106299/comparison-of-two-early-treatment-protocols-for-anterior-dental-crossbite-in-the-mixed-dentition-a-randomized-trial
#5
Cristina B Miamoto, Leandro S Marques, Lucas G Abreu, Saul M Paiva
OBJECTIVE: To evaluate and compare two treatment protocols to correct anterior dental crossbite in the mixed dentition. MATERIALS AND METHODS: Thirty children, 8-10 years of age, participated. Individuals were divided into two groups. Group 1 consisted of 15 children treated with an upper removable appliance with finger springs; group 2, 15 children treated by bonding resin-reinforced glass ionomer cement bite pads on the lower first molars. The 30 participants were evaluated before treatment (T1) and 12 months after treatment began (T2)...
November 6, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/29104596/deposition-of-crystalline-hydroxyapatite-nanoparticles-on-y-tzp-ceramic-a-potential-solution-to-enhance-bonding-characteristics-of-y-tzp-ceramics
#6
Abbas Azari, Sakineh Nikzad Jamnani, Arash Yazdani, Faezeh Atri, Vania Rasaie, Abbas Fazel Anvari Yazdi
Objectives: Many advantages have been attributed to dental zirconia ceramics in terms of mechanical and physical properties; however, the bonding ability of this material to dental structure and/or veneering ceramics has always been a matter of concern. On the other hand, hydroxyapatite (HA) shows excellent biocompatibility and good bonding ability to tooth structure, with mechanically unstable and brittle characteristics, that make it clinically unacceptable for use in high stress bearing areas...
March 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29103436/effectiveness-of-pulsed-electromagnetic-field-for-pain-caused-by-placement-of-initial-orthodontic-wire-in-female-orthodontic-patients-a-preliminary-single-blind-randomized-clinical-trial
#7
Jin-Gon Jung, Jae Hyun Park, Sang-Cheol Kim, Kyung-Hwa Kang, Jin-Hyoung Cho, Jin-Woo Cho, Na-Young Chang, R Curtis Bay, Jong-Moon Chae
INTRODUCTION: The purpose of this 2-arm parallel trial was to assess the effects of pulsed electromagnetic field (PEMF) on the reduction of pain caused by initial orthodontic tooth movement. METHODS: Thirty-three female patients (mean age, 16.8 ± 3.8 years) who began orthodontic treatment using fixed appliances were examined. In the pilot study, male patients were less likely to use the PEMF device (epatchQ; Speed Dental, Seoul, Korea) and answer a survey consistently, so eligibility criteria were female patients who were periodontally and systemically healthy at the initiation of treatment and had no history of dental pain in the prior 2 weeks or who used no medications (anti-inflammatory or analgesic drugs) during the experiment period...
November 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/29083086/polymerization-shrinkage-and-porosity-profile-of-dual-cure-dental-resin-cements-with-different-adhesion-to-dentin-mechanisms
#8
Adrieli Burey, Paulo José Dos Reis, Bruno Luiz Santana Vicentin, Cássia Cilene Dezan Garbelini, Márcio Grama Hoeppner, Carlos Roberto Appoloni
This research aims to probe the porosity profile and polymerization shrinkage of two different dual cure resin cements with different dentin bonding systems. The self-adhesive resin cement RelyX U200 (named RU) and the conventional Allcem Core (named AC) were analyzed by x-ray microtomography (μCT) and Scanning Electron Microscopy (SEM). Each cement was divided into two groups (n = 5): dual-cured (RUD and ACD) and self-cured (RUC and ACC). μCT demonstrated that the method of polymerization does not influence the porosity profile but the polymerization shrinkage...
October 30, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/29081448/the-effective-design-of-zirconia-coping-on-titanium-base-in-dental-implant-superstructure
#9
Maiko Mieda, Ikiru Atsuta, Yasuyuki Matsushita, Takehiro Morita, Yasunori Ayukawa, Yoshihiro Tsukiyama, Yoshinori Sawae, Kiyoshi Koyano
Zirconia exhibits good tissue compatibility and nontoxicity, making it a widely used esthetic replacement material for implant abutments. To avoid abutment-fracture, the parts composed of zirconia with a bonded metal component connected to the implant can be used. The purpose of this study was to design titanium and zirconia components with high fracture resistance at the zirconia component's edge line. Three edge line designs of the titanium base and zirconia sleeve were made: chamfer, shoulder, and backtaper...
October 27, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/29071037/the-impact-of-plasma-treatment-of-cercon%C3%A2-zirconia-ceramics-on-adhesion-to-resin-composite-cements-and-surface-properties
#10
Kasra Tabari, Sepanta Hosseinpour, Hossein Mohammad-Rahimi
Introduction: In recent years, the use of ceramic base zirconia is considered in dentistry for all ceramic restorations because of its chemical stability, biocompatibility, and good compressive as well as flexural strength. However, due to its chemical stability, there is a challenge with dental bonding. Several studies have been done to improve zirconia bonding but they are not reliable. The purpose of this research is to study the effect of plasma treatment on bonding strength of zirconia. Methods: In this in vitro study, 180 zirconia discs' (thickness was 0...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/29068426/preparation-and-characterization-of-resorbable-bacterial-cellulose-membranes-treated-by-electron-beam-irradiation-for-guided-bone-regeneration
#11
Sung-Jun An, So-Hyoun Lee, Jung-Bo Huh, Sung In Jeong, Jong-Seok Park, Hui-Jeong Gwon, Eun-Sook Kang, Chang-Mo Jeong, Youn-Mook Lim
Bacterial cellulose (BC) is an excellent biomaterial with many medical applications. In this study, resorbable BC membranes were prepared for guided bone regeneration (GBR) using an irradiation technique for applications in the dental field. Electron beam irradiation (EI) increases biodegradation by severing the glucose bonds of BC. BC membranes irradiated at 100 kGy or 300 kGy were used to determine optimal electron beam doses. Electron beam irradiated BC membranes (EI-BCMs) were evaluated by scanning electron microscopy (SEM), attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy, thermal gravimetric analysis (TGA), and using wet tensile strength measurements...
October 25, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29056869/engineered-peptide-repairs-defective-adhesive-dentin-interface
#12
Qiang Ye, Paulette Spencer, Esra Yuca, Candan Tamerler
Failure of dental composite restorations is primarily due to recurrent decay at the tooth-composite interface. At this interface, the adhesive and its bond with dentin is the barrier between the restored tooth and the oral environment. In vivo degradation of the bond formed at the adhesive/dentin (a/d) interface follows a cascade of events leading to weakening of the composite restoration. Here, a peptide-based approach is developed to mineralize deficient dentin matrices at the a/d interface. Peptides that have an inherent capacity to self-assemble on dentin and to induce calcium-phosphate remineralization are anchored at the interface...
May 2017: Macromolecular Materials and Engineering
https://www.readbyqxmd.com/read/29054277/all-zirconia-resin-bonded-fixed-dental-prostheses-replacing-missing-incisors-probably-have-a-high-10-year-survival-rate-in-patients-who-are-highly-compliant
#13
Romina Brignardello-Petersen
No abstract text is available yet for this article.
October 17, 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/29042724/evaluation-of-bond-strength-between-grooved-titanium-alloy-implant-abutments-and-provisional-veneering-materials-after-surface-treatment-of-the-abutments-an-in-vitro-study
#14
Gowtham Venkat, Murugesan Krishnan, Suganya Srinivasan, Muthukumar Balasubramanian
INTRODUCTION: Titanium has become the material of choice with greater applications in dental implants. The success of the dental implant does not only depend on the integration of the implant to the bone but also on the function and longevity of the superstructure. The clinical condition that demands long-term interim prosthesis is challenging owing to the decreased bond between the abutment and the veneering material. Hence, various surface treatments are done on the abutments to increase the bond strength...
July 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29042114/extending-the-service-life-of-existing-dental-restorations-with-esthetic-and-functional-limitations
#15
Malin Strasding, Vincent Fehmer, Bjarni E Pjetursson, Irena Sailer
Adhesive cementation is a useful procedure not only for cementing restorations onto teeth but also for attaching new ceramic restorations to existing restorations to improve their esthetics and/or function. This clinical report presents a technique for modifying an existing nonsatisfactory implant-supported fixed dental prosthesis by means of adhesively cemented veneers and onlays bonded to the pre-existing metal-ceramic surface with resin cement. This modification may avoid the replacement of the fixed dental prosthesis, reducing both treatment costs and time while fulfilling the patient's demands...
October 14, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29039965/scanning-electron-microscope-comparative-surface-evaluation-of-glazed-lithium-disilicate-ceramics-under-different-irradiation-settings-of-nd-yag-and-er-yag-lasers
#16
Josko Viskic, Drazen Jokic, Suzana Jakovljevic, Lana Bergman, Sladana Milardovic Ortolan, Senka Mestrovic, Ketij Mehulic
OBJECTIVE: To evaluate the surface of glazed lithium disilicate dental ceramics after irradiation under different irradiation settings of Nd:YAG and Er:YAG lasers using a scanning electron microscope (SEM). MATERIALS AND METHODS: Three glazed-press lithium disilicate ceramic discs were treated with HF, Er:YAG, and Nd:YAG, respectively. The laser-setting variables tested were laser mode, repetition rate (Hz), power (W), time of exposure (seconds), and laser energy (mJ)...
October 17, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/29033192/chemical-affinity-of-10-methacryloyloxydecyl-dihydrogen-phosphate-to-dental-zirconia-effects-of-molecular-structure-and-solvents
#17
Ying Chen, Zhicen Lu, Mengke Qian, Huaiqin Zhang, Chen Chen, Haifeng Xie, Franklin R Tay
OBJECTIVES: To examine whether solvents and changing the molecular structure of 10-Methacryloyloxydecyl dihydrogen phosphate (10-MDP) affect its chemical affinity to Yttria-stabilized tetragonal zirconia polycrystals (Y-TZP). METHODS: The present work investigated the chemical affinity between Y-TZP and 10-MDP dissolved in different solvents (acetone/ethanol/water or mixture) using X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, and thermodynamic calculations...
October 13, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29031995/comparison-of-deproteinization-agents-on-bonding-to-developmentally-hypomineralized-enamel
#18
Manikandan Ekambaram, Robert P Anthonappa, Sharaschandra R Govindool, Cynthia Ky Yiu
OBJECTIVE: To compare bonding of dental adhesive to hypomineralized enamel (HE) after pre-treatment with either 5% sodium hypochlorite (NaOCl) solution or papain-based papacarie gel. METHODS: Normal enamel (NE) and HE obtained from hypomineralized first permanent molars were acid-etched with 32% phosphoric acid and randomly allocated into no deproteinization, deproteinization using 5% NaOCl, or deproteinization usping papacarie gel groups. Subsequently, the specimens were bonded, packed with composite resins and subjected to micro-shear bond strength (MSBS) testing and the data analysed using 2-way ANOVA and Tukey tests...
October 11, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/29028596/synthesis-characterization-and-evaluation-of-a-fluorinated-resin-monomer-with-low-water-sorption
#19
Xue Liu, Zengyao Wang, Chengji Zhao, Wenhuan Bu, Yurong Zhang, Hui Na
A fluorinated acrylate monomer (4-TF-PQEA) without BPA (bisphenol-A) structure was synthesized and mixed with triethylene glycol dimethacrylate (TEGDMA) to used as dental resin system in order to achieve lower water sorption and reduce human exposure to BPA derivatives. Double bond conversion (DC) was measured using Fourier transform infrared spectroscopy (FTIR). Water sorption (WS), water solution (WL) and depth of cure (DOC) were evaluated according to ISO 4049:2009. Water contact angle (CA) was measured using contact angle analyzer...
September 21, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29024714/antibacterial-effect-and-bond-strength-of-a-modified-dental-adhesive-containing-the-peptide-nisin
#20
Meixuan Su, Shunyi Yao, Lisha Gu, Zihua Huang, Sui Mai
This study attempted to incorporate the antibacterial peptide nisin into an etch-and-rinse dental adhesive to evaluate the antibacterial activity of the modified adhesive against Streptococcus mutans and the bond strength. Single Bond 2 was used as a negative control, and nisin was incorporated at 1%, 3%, and 5% (w/v). The antibacterial activity against S. mutans was evaluated using the film contact test, the agar diffusion test, XTT assays and confocal laser scanning microscopy (CLSM). The microtensile bond strength (μTBS) of the modified dental adhesive was also evaluated...
October 9, 2017: Peptides
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