The Experts below are selected from a list of 1020 Experts worldwide ranked by ideXlab platform
Norihiro Nishiyama - One of the best experts on this subject based on the ideXlab platform.
-
evaluation of adhesive properties of three resilient Denture Liners by the modified peel test method
Acta Biomaterialia, 2009Co-Authors: Yasuhiro Tanimoto, Hiroyuki Saeki, Suguru Kimoto, Tsuyoshi Nishiwaki, Norihiro NishiyamaAbstract:Abstract The characteristics of adhesive properties between a Denture base and resilient Denture Liner were investigated by a modified peel test with an L-shaped metal attachment. Three commercially resilient Denture lining materials, namely GC Reline Soft (S), GC Reline Extra Soft (ES), and GC Reline Ultra Soft (US), were evaluated. Acrylic resin (GC Acron) was used as Denture base material. Peel specimens consisting of the Denture base acrylic resin and resilient Denture Liner were tested after storage for 1 and 30 days in distilled water at 37 °C. The modified peel test method gave load–displacement curves and work of adhesion (WA) values of the Denture base material and resilient Denture Liner. The WA of specimens after 1 day of storage ranged from 1.71 to 2.55 N mm−1 and increased in the order from US to S to ES. On the other hand, the WA of specimens after 30 day of storage ranged from 1.44 to 2.47 N mm−1 and increased in the order from US to ES to S. US had significantly lower WA after 1 and 30 days of storage than did S and ES (P
-
Evaluation of adhesive properties of three resilient Denture Liners by the modified peel test method.
Acta Biomaterialia, 2009Co-Authors: Yasuhiro Tanimoto, Hiroyuki Saeki, Suguru Kimoto, Tsuyoshi Nishiwaki, Norihiro NishiyamaAbstract:The characteristics of adhesive properties between a Denture base and resilient Denture Liner were investigated by a modified peel test with an L-shaped metal attachment. Three commercially resilient Denture lining materials, namely GC Reline Soft (S), GC Reline Extra Soft (ES), and GC Reline Ultra Soft (US), were evaluated. Acrylic resin (GC Acron) was used as Denture base material. Peel specimens consisting of the Denture base acrylic resin and resilient Denture Liner were tested after storage for 1 and 30 days in distilled water at 37 degrees C. The modified peel test method gave load-displacement curves and work of adhesion (W(A)) values of the Denture base material and resilient Denture Liner. The W(A) of specimens after 1 day of storage ranged from 1.71 to 2.55 N mm(-1) and increased in the order from US to S to ES. On the other hand, the W(A) of specimens after 30 day of storage ranged from 1.44 to 2.47 N mm(-1) and increased in the order from US to ES to S. US had significantly lower W(A) after 1 and 30 days of storage than did S and ES (P
Tatiana Pereira-cenci - One of the best experts on this subject based on the ideXlab platform.
-
Effect of triazine derivative added to Denture materials on a microcosm biofilm model.
Journal of Biomedical Materials Research Part B, 2012Co-Authors: Aline Pinheiro De Moraes, Caroline Barwaldt, Thais Nunes, Rafael Sarkis-onofre, Noéli Boscato, Fabricio Aulo Ogliari, Tatiana Pereira-cenciAbstract:The aim of this study was to assess the effect of triazine incorporation to Denture materials on biofilm formation of saliva derived from microcosms of patients who are positive for Candida albicans. Biofilms were formed on microwave-cured acrylic resin, one hard Denture Liner, and two soft Denture Liners containing 0, 2.5, 5, and 10% triazine. For experimental subset (n = 10), mechanical properties of the materials and colony-forming unit counts from the biofilms formed on the materials were assessed. Flexural strength and modulus decreased with the addition of 2.5% triazine (p < 0.01). In general, the addition of 5 and 10% triazine leaded to more soluble materials (p < 0.001). Saliva donor with candidiasis resulted in higher counts of total microorganisms (p = 0.0294) and Streptococci (p = 0.0008). Soft Denture Liners showed the highest counts for total microorganisms, Streptococci, and Candida species (p < 0.001). The addition of triazine directly to Denture materials was not beneficial in reducing biofilm formation in a complex biofilm model. © 2012 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2012.
-
In vivo biofilm formation on a soft Denture Liner in elderly patients with controlled diabetes
Gerodontology, 2010Co-Authors: Daniela R. Faccio, Maximiliano Sérgio Cenci, Tatiana Pereira-cenci, Flávio Fernando Demarco, Rafael R. Moraes, Noéli BoscatoAbstract:doi: 10.1111/j.1741-2358.2010.00428.x In vivo biofilm formation on a soft Denture Liner in elderly patients with controlled diabetes Objectives: This in vivo study evaluated the influence of controlled diabetes on biofilm formation on a soft Denture Liner in elderly patients. Background: Soft Denture lining materials are more susceptible to microbial colonisation than Denture base acrylic resins. Especially in the elderly, several predisposing factors may accumulate leading to an increased probability of biofilm development that may result in candidiasis, a significant clinical oral disease. Materials and methods: Volunteers wearing complete Dentures were divided into two groups (n = 20): diabetic patients with controlled glycaemia, and healthy patients. In both groups, a silicone-based soft Liner was placed in a recess created at the base of the maxillary Dentures. Subjects cleaned the prosthesis three times a day. Biofilm formed on the Liner was quantified at various time points (baseline, two, four and six weeks). Data were analysed by two-way repeated measures anova and Tukey’s test (α = 0.05). Results: There was no statistical difference in biofilm formation for any of the time points between controlled diabetes patients and healthy patients. Conclusion: The results suggest that the control of diabetes in elderly patients provides the same levels of biofilm formation when compared to healthy individuals.
-
Temporal changes of Denture plaque microbiologic composition evaluated in situ.
International Journal of Prosthodontics, 2010Co-Authors: Tatiana Pereira-cenci, Maximiliano Sérgio Cenci, Wander José Da Silva, Altair Antoninha Del Bel CuryAbstract:: This study assessed how biofilm composition is affected by both time and Denture material in complete Denture wearers. Biofilm was formed during two phases of 14 days on acrylic resin and Denture Liner specimens mounted on the buccal surface of the mandibular Dentures of 21 patients. Specimens were removed randomly on days 2, 7, and 14. Higher counts of Candida glabrata, total streptococci, Actinomyces, total microorganisms, and percentage of Actinomyces were observed after 7 and 14 days (P < .05). C glabrata was the only species to show progressively rising counts from day 2 to 14, while no difference was found in biofilm composition among the materials tested.
-
In vitro Candida colonization on acrylic resins and Denture Liners: influence of surface free energy, roughness, saliva, and adhering bacteria.
International Journal of Prosthodontics, 2007Co-Authors: Tatiana Pereira-cenci, Maximiliano Sérgio Cenci, Altair Antoninha Del Bel Cury, Renata Cunha Matheus Rodrigues-garciaAbstract:: This study aimed to determine the influence of surface roughness (Ra), surface free energy (SFE), saliva, and bacteria on Candida adhesion to Denture materials. The Ra and SFE of 2 acrylic resin specimens and 2 Denture Liner specimens were measured and assayed in a flow chamber for bacteria culture perfusion plus Candida albicans or C glabrata cultures. Adhesion was determined by counting under light microscopy. Candida adhesion showed significant differences depending on the factors involved. The overall colonization was significantly decreased by saliva and influenced by bacteria. Candida adhesion was strongly affected by Ra, saliva, and bacteria, but not by SFE.
Hakan Akin - One of the best experts on this subject based on the ideXlab platform.
-
The Journal of Advanced Prosthodontics 121
2016Co-Authors: Hakan Akin, Faik Tugut, Burcu Mutaf, Umit GuneyAbstract:Investigation of bonding properties of Denture bases to silicone-based soft Denture Liner immersed in isobutyl methacrylate and 2-hydroxyethyl methacrylat
-
Tensile bond strength of silicone-based soft Denture Liner to two chemically different Denture base resins after various surface treatments
Lasers in Medical Science, 2013Co-Authors: Hakan Akin, Faik Tugut, Umit Guney, Omer Kirmali, Turker AkarAbstract:This study evaluated the effect of various surface treatments on the tensile bond strength of a silicone-based soft Denture Liner to two chemically different Denture base resins, heat-cured polymethyl methacrylate (PMMA), and light-activated urethane dimethacrylate or Eclipse Denture base resin. PMMA test specimens were fabricated and relined with a silicone-based soft Denture Liner (group AC). Eclipse test specimens were prepared according to the manufacturer’s recommendation. Before they were relined with a silicone-based soft Denture Liner, each received one of three surface treatments: untreated (control, group EC), Eclipse bonding agent applied (group EB), and laser-irradiated (group EL). Tensile bond strength tests (crosshead speed = 5 mm/min) were performed for all specimens, and the results were analyzed using the analysis of variance followed by Tukey’s test ( p = 0.05). Eclipse Denture base and PMMA resins presented similar bond strengths to the silicone-based soft Denture Liner. The highest mean force was observed in group EL specimens, and the tensile bond strengths in group EL were significantly different ( p
-
Tensile bond strength of silicone-based soft Denture Liner to two chemically different Denture base resins after various surface treatments
Lasers in medical science, 2012Co-Authors: Hakan Akin, Faik Tugut, Umit Guney, Omer Kirmali, Turker AkarAbstract:This study evaluated the effect of various surface treatments on the tensile bond strength of a silicone-based soft Denture Liner to two chemically different Denture base resins, heat-cured polymethyl methacrylate (PMMA), and light-activated urethane dimethacrylate or Eclipse Denture base resin. PMMA test specimens were fabricated and relined with a silicone-based soft Denture Liner (group AC). Eclipse test specimens were prepared according to the manufacturer’s recommendation. Before they were relined with a silicone-based soft Denture Liner, each received one of three surface treatments: untreated (control, group EC), Eclipse bonding agent applied (group EB), and laser-irradiated (group EL). Tensile bond strength tests (crosshead speed = 5 mm/min) were performed for all specimens, and the results were analyzed using the analysis of variance followed by Tukey’s test (p = 0.05). Eclipse Denture base and PMMA resins presented similar bond strengths to the silicone-based soft Denture Liner. The highest mean force was observed in group EL specimens, and the tensile bond strengths in group EL were significantly different (p < 0.05) from those in the other groups.
-
Effect of different surface treatments on tensile bond strength of silicone-based soft Denture Liner
Lasers in Medical Science, 2011Co-Authors: Hakan Akin, Faik Tugut, Burcu Mutaf, Gulsah Akin, A. Kemal OzdemirAbstract:Failure of the bond between the acrylic resin and resilient Liner material is commonly encountered in clinical practice. The purpose of this study was to investigate the effect of different surface treatments (sandblasting, Er:YAG, Nd:YAG, and KTP lasers) on tensile bond strength of silicone-based soft Denture Liner. Polymethyl methacrylate test specimens were fabricated and each received one of eight surface treatments: untreated (control), sandblasted, Er:YAG laser irradiated, sandblasted + Er:YAG laser irradiated, Nd:YAG laser irradiated, sandblasted + Nd:YAG laser irradiated, KTP laser irradiated, and sandblasted + KTP laser irradiated. The resilient Liner specimens ( n = 15) were processed between two polymethyl methacrylate (PMMA) blocks. Bonding strength of the Liners to PMMA were compared by tensile test with the use of a universal testing machine at a crosshead speed of 5 mm/min. Kruskal–Wallis and Wilcoxon tests were used to analyze the data (α = 0.05). Altering the polymethyl methacrylate surface by Er:YAG laser significantly increased the bond strengths in polymethyl methacrylate/silicone specimens, however, sandblasting before applying a lining material had a weakening effect on the bond. In addition, Nd:YAG and KTP lasers were found to be ineffective for increasing the strength of the bond.
Andre Ulisses Dantas Batista - One of the best experts on this subject based on the ideXlab platform.
-
effect of disinfection treatments on the hardness of soft Denture Liner materials
Journal of Prosthodontics, 2007Co-Authors: Sabrina Pavan, Joao Neudenir Arioli Filho, Paulo Henrique Dos Santos, Sergio Sualdini Nogueira, Andre Ulisses Dantas BatistaAbstract:Department of Dental Materials and Prosthodontics Araraquara Dental School Sao Paulo State University, Araraquara, Sao Paulo
Turker Akar - One of the best experts on this subject based on the ideXlab platform.
-
Tensile bond strength of silicone-based soft Denture Liner to two chemically different Denture base resins after various surface treatments
Lasers in Medical Science, 2013Co-Authors: Hakan Akin, Faik Tugut, Umit Guney, Omer Kirmali, Turker AkarAbstract:This study evaluated the effect of various surface treatments on the tensile bond strength of a silicone-based soft Denture Liner to two chemically different Denture base resins, heat-cured polymethyl methacrylate (PMMA), and light-activated urethane dimethacrylate or Eclipse Denture base resin. PMMA test specimens were fabricated and relined with a silicone-based soft Denture Liner (group AC). Eclipse test specimens were prepared according to the manufacturer’s recommendation. Before they were relined with a silicone-based soft Denture Liner, each received one of three surface treatments: untreated (control, group EC), Eclipse bonding agent applied (group EB), and laser-irradiated (group EL). Tensile bond strength tests (crosshead speed = 5 mm/min) were performed for all specimens, and the results were analyzed using the analysis of variance followed by Tukey’s test ( p = 0.05). Eclipse Denture base and PMMA resins presented similar bond strengths to the silicone-based soft Denture Liner. The highest mean force was observed in group EL specimens, and the tensile bond strengths in group EL were significantly different ( p
-
Tensile bond strength of silicone-based soft Denture Liner to two chemically different Denture base resins after various surface treatments
Lasers in medical science, 2012Co-Authors: Hakan Akin, Faik Tugut, Umit Guney, Omer Kirmali, Turker AkarAbstract:This study evaluated the effect of various surface treatments on the tensile bond strength of a silicone-based soft Denture Liner to two chemically different Denture base resins, heat-cured polymethyl methacrylate (PMMA), and light-activated urethane dimethacrylate or Eclipse Denture base resin. PMMA test specimens were fabricated and relined with a silicone-based soft Denture Liner (group AC). Eclipse test specimens were prepared according to the manufacturer’s recommendation. Before they were relined with a silicone-based soft Denture Liner, each received one of three surface treatments: untreated (control, group EC), Eclipse bonding agent applied (group EB), and laser-irradiated (group EL). Tensile bond strength tests (crosshead speed = 5 mm/min) were performed for all specimens, and the results were analyzed using the analysis of variance followed by Tukey’s test (p = 0.05). Eclipse Denture base and PMMA resins presented similar bond strengths to the silicone-based soft Denture Liner. The highest mean force was observed in group EL specimens, and the tensile bond strengths in group EL were significantly different (p < 0.05) from those in the other groups.