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Effect of surface treatments on the adhesion of fiber post to resin composite core material. 表面处理对纤维桩与树脂复合芯材粘合性能的影响。
IF 1.9 4区 医学
Dental materials journal Pub Date : 2025-11-28 Epub Date: 2025-10-31 DOI: 10.4012/dmj.2025-091
Jiyoon Kwon, Hyo Jin Jo, Jeong Hun Lee, Young Kyung Kim
{"title":"Effect of surface treatments on the adhesion of fiber post to resin composite core material.","authors":"Jiyoon Kwon, Hyo Jin Jo, Jeong Hun Lee, Young Kyung Kim","doi":"10.4012/dmj.2025-091","DOIUrl":"10.4012/dmj.2025-091","url":null,"abstract":"<p><p>This study aimed to evaluate the effect of various surface treatments of a fiber post on the bond strength to a composite core. The polished flat surfaces of fiber posts received different treatments: C (no surface treatment), S (silanization only), HS (30% hydrogen peroxide etching followed by silanization), HNS (etching with a 30% hydrogen peroxide/5 wt% sodium bicarbonate mixture followed by silanization), and SBS (sandblasting and then silanization). Resin composite cylinders were bonded on each pretreated surface and all bonded samples were stored in water at 37ºC for 24 h, with half of them additionally thermocycled for 10,000 cycles before microshear testing. Surface morphology and elemental composition of the conditioned post surfaces were studied by scanning electron microscopy and energy dispersive X-ray spectroscopy. The HNS exhibited the highest bond strength, regardless of thermocycling (p<0.05). Although etching and sandblasting increased surface roughness, sandblasting caused structural damage of the post.</p>","PeriodicalId":11065,"journal":{"name":"Dental materials journal","volume":" ","pages":"697-704"},"PeriodicalIF":1.9,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145437586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of bonding methods on shear bond strength between cobalt-chromium and titanium alloys fabricated by selective laser melting and denture base resins. 选择性激光熔融钴铬钛合金与义齿基托树脂剪切结合强度的评价。
IF 1.9 4区 医学
Dental materials journal Pub Date : 2025-11-28 Epub Date: 2025-11-07 DOI: 10.4012/dmj.2025-093
Yuji Uchida, Atsushi Takaichi, Yuka Kajima, Hidekazu Takahashi, Noriyuki Wakabayashi
{"title":"Evaluation of bonding methods on shear bond strength between cobalt-chromium and titanium alloys fabricated by selective laser melting and denture base resins.","authors":"Yuji Uchida, Atsushi Takaichi, Yuka Kajima, Hidekazu Takahashi, Noriyuki Wakabayashi","doi":"10.4012/dmj.2025-093","DOIUrl":"10.4012/dmj.2025-093","url":null,"abstract":"<p><p>This study evaluated the shear bond strength (SBS) between cobalt-chromium (CoCr) and titanium (Ti) alloys fabricated via selective laser melting (SLM) and denture base resins with different bonding methods. After surface pretreatment of cylindrical CoCr and Ti alloy specimens, bonding was performed using three methods: the compression molding (CM) method, the pouring (PT) method, and the method using 4-META/MMA-TBB resin (SB). SBS tests were performed after storing all specimens in distilled water at 37ºC for 24 h, either immediately or following 10,000 thermocycles. For CoCr alloys, without thermocycling, the CM method exhibited significantly higher SBS than SB method (p<0.001), but no significant differences were observed with thermocycling. For Ti alloys, the CM method showed significantly higher SBS than the SB method without thermocycling (p=0.018) and was higher than the PT method with thermocycling (p=0.047). These results suggested the CM method may be a promising bonding technique for SLM-fabricated alloys.</p>","PeriodicalId":11065,"journal":{"name":"Dental materials journal","volume":" ","pages":"663-671"},"PeriodicalIF":1.9,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145480969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of the influence of gingival retraction width on the optical impression of the subgingival region using a 3D printed abutment tooth model. 应用3D打印基牙模型评价龈下区域缩进宽度对光学印模的影响。
IF 1.9 4区 医学
Dental materials journal Pub Date : 2025-11-28 Epub Date: 2025-10-10 DOI: 10.4012/dmj.2024-269
Takahiro Nishiyama, Kazumichi Wakabayashi, Miyu Tanaka, Shingo Tamiya, Takashi Nakamura, Shoichi Ishigaki
{"title":"Evaluation of the influence of gingival retraction width on the optical impression of the subgingival region using a 3D printed abutment tooth model.","authors":"Takahiro Nishiyama, Kazumichi Wakabayashi, Miyu Tanaka, Shingo Tamiya, Takashi Nakamura, Shoichi Ishigaki","doi":"10.4012/dmj.2024-269","DOIUrl":"10.4012/dmj.2024-269","url":null,"abstract":"<p><p>This study aimed to evaluate the conditions for the finish line position and gingival retraction width that allow for taking optical impressions using three-dimensional (3D) printed models. Taking an impression using an intraoral scanner (IOS) is widely performed in fabricating crown prostheses. Measuring the subgingival finish line using an IOS is difficult; to obtain optical impressions of the subgingival finish line, the gingival retraction has been recommended. However, no study has evaluated the amount of gingival retraction width and the depth of the finish line. In this study, the measurement limits of the subgingival finish line using an IOS and models fabricated by a 3D printer were investigated. The results of this study revealed that TRIOS3 could not measure the finish line when the gingival retraction width was <0.25 mm, and the finish line was located >0.50 mm below the gingival margin.</p>","PeriodicalId":11065,"journal":{"name":"Dental materials journal","volume":" ","pages":"627-633"},"PeriodicalIF":1.9,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145285246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of new bonding materials with high adhesive strength to dentin using blended calcium salts of MDP. 利用MDP混合钙盐开发高强度牙本质新型粘结材料。
IF 1.9 4区 医学
Dental materials journal Pub Date : 2025-11-28 Epub Date: 2025-11-07 DOI: 10.4012/dmj.2025-052
Yuusuke Fujita, Kohei Sato, Shuichi Ito, Takashi Nezu, Masato Saitoh
{"title":"Development of new bonding materials with high adhesive strength to dentin using blended calcium salts of MDP.","authors":"Yuusuke Fujita, Kohei Sato, Shuichi Ito, Takashi Nezu, Masato Saitoh","doi":"10.4012/dmj.2025-052","DOIUrl":"10.4012/dmj.2025-052","url":null,"abstract":"<p><p>In this experiment, calcium salt (MDP-Ca) was synthesized from methacryloyloxydecyl dihydrogen phosphate (MDP), which is an adhesive monomer, and blended into a bonding system (Hybrid Coat: HC). The results from the microtensile and the indentation hardness revealed that HC with 1.50% MDP-Ca (MDCP) had higher values. In the FE-SEM observations, MDCP began to change its structure with a dense etching pattern after 24 h of immersion earlier than HC. These results indicated that MDP-Ca strengthened the mechanical structure of the hybrid layer because the initial bonding strength and indentation hardness of MDCP were greater than those of HC. Then MDCP was observed to have a dense structure that was resistant to ion etching treatment within 24 h. Thus, the addition of an appropriate concentration of MDP-Ca improved the initial bonding strength and mechanical properties of the prototype bonding material and formed a hybrid layer that was useful as a coating material.</p>","PeriodicalId":11065,"journal":{"name":"Dental materials journal","volume":" ","pages":"652-662"},"PeriodicalIF":1.9,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145480858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Calcium silicate sol-gel derived amorphous materials incorporating silver, zinc, or cupper ions: Effects of ion type and sample amount on antibacterial properties and cell compatibility. 含银、锌或铜离子的硅酸钙溶胶-凝胶衍生非晶材料：离子类型和样品数量对抗菌性能和细胞相容性的影响。
IF 1.9 4区 医学
Dental materials journal Pub Date : 2025-11-20 DOI: 10.4012/dmj.2025-174
Takuya Zenji, Akiko Obata, Toshihiro Kasuga
{"title":"Calcium silicate sol-gel derived amorphous materials incorporating silver, zinc, or cupper ions: Effects of ion type and sample amount on antibacterial properties and cell compatibility.","authors":"Takuya Zenji, Akiko Obata, Toshihiro Kasuga","doi":"10.4012/dmj.2025-174","DOIUrl":"https://doi.org/10.4012/dmj.2025-174","url":null,"abstract":"<p><p>Calcium silicate sol-gel derived amorphous materials incorporated with one of three antibacterial metal ions, silver, zinc, or copper, were prepared, and their antibacterial properties and cell compatibility were evaluated using Escherichia coli and a mouse fibroblast-like cell line, respectively. In all samples, the ions derived from the constituent elements of the materials were eluted into the culture medium. However, when antibacterial and cell culture tests were conducted under the same sample concentration conditions, the amount of eluted ions, including antibacterial metal ions, differed depending on the test. Furthermore, the variation in the elution amount depended on the type of antibacterial metal ion. Both antibacterial properties and cell compatibility were confirmed only in the zinc-containing samples. In addition, the prepared materials can be shaped into fibrous forms with cotton-wool-like structures by electrospinning. These materials are expected to serve as flexible bone grafts with antibacterial properties and therapeutic ion-providing ability.</p>","PeriodicalId":11065,"journal":{"name":"Dental materials journal","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145556536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Physical and biological properties of bioactive glass-containing Bis-GMA-free pulp capping materials: An in vitro study. 含生物活性玻璃的不含bis - gma的牙髓封盖材料的物理和生物特性：体外研究。
IF 1.9 4区 医学
Dental materials journal Pub Date : 2025-09-30 Epub Date: 2025-08-13 DOI: 10.4012/dmj.2024-392
Mijoo Kim, Reuben Kim
{"title":"Physical and biological properties of bioactive glass-containing Bis-GMA-free pulp capping materials: An in vitro study.","authors":"Mijoo Kim, Reuben Kim","doi":"10.4012/dmj.2024-392","DOIUrl":"10.4012/dmj.2024-392","url":null,"abstract":"<p><p>The purpose of this study was to develop and evaluate Bis-GMA-free pulp capping materials incorporating bioactive glass (BG). Experimental Bis-GMA-free resin-based materials (TC2.1) were formulated with varying concentrations of 45S BG (0, 10, and 20 wt%). Degree of conversion (DC) was measured using FT-IR-ATR spectrometry. Cell viability was assessed through MTS assay on human dental pulp stem cells. Wound healing capacity was evaluated using scratch assay, while odontogenic differentiation was assessed through alkaline phosphatase (ALP) activity and Alizarin Red S staining. TC2.1+BG0% achieved highest DC (68.1±3.5%), with values decreasing as BG content increased (TC2.1+BG20%: 34.4±4.2%). All formulations maintained cell viability above 80%, with TC2.1+BG20% demonstrating superior wound healing capacity and highest ALP activity compared to commercial controls. Mineralization assays showed enhanced calcium deposition in TC2.1+BG20% by day 14. This novel material demonstrates promising biocompatibility and mineralization-inducing properties while maintaining adequate polymerization efficiency, offering potential advantages for vital pulp therapy applications.</p>","PeriodicalId":11065,"journal":{"name":"Dental materials journal","volume":" ","pages":"479-486"},"PeriodicalIF":1.9,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144844839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Changes in physical properties of decellularized bone after long-term treatment in phosphate-buffered saline. 磷酸盐缓冲盐水长期治疗后脱细胞骨物理特性的变化。
IF 1.9 4区 医学
Dental materials journal Pub Date : 2025-09-30 Epub Date: 2025-09-12 DOI: 10.4012/dmj.2024-345
Zi Deng, Masato Nakagawa, Yasuhiko Matsushima, Masahiro Okada, Yoshitomo Honda
{"title":"Changes in physical properties of decellularized bone after long-term treatment in phosphate-buffered saline.","authors":"Zi Deng, Masato Nakagawa, Yasuhiko Matsushima, Masahiro Okada, Yoshitomo Honda","doi":"10.4012/dmj.2024-345","DOIUrl":"10.4012/dmj.2024-345","url":null,"abstract":"<p><p>Phosphate-buffered saline (PBS) is used as the washing solution, diluent, and stock solution to prepare decellularized bone. However, limited information exists regarding the effects of PBS alone on changes in bone structure and mechanical properties. This study examined the effects of prolonged PBS treatment (up to 14 days) on the bone matrix. Histological staining showed a reduction in cellular components (partial decellularization) after extended treatment, while collagen fibers were retained. Although PBS-treated bone showed remarkably decreased bone strength, the loss of inorganic materials was limited to the bone surface of the tibia. Collagen fibers in the PBS-treated bones showed marked irregularity and an increase in their diameter. These results suggest that prolonged PBS treatment affects the structure and network of collagen fibers, similar to inorganic materials, in the bone matrix. Our results provide basic insights into the preparation of functional decellularized bone for dental applications.</p>","PeriodicalId":11065,"journal":{"name":"Dental materials journal","volume":" ","pages":"547-556"},"PeriodicalIF":1.9,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145074526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structural and chemical properties of acellular scaffolds made from bovine ribs. 牛肋骨脱细胞支架的结构与化学性质研究。
IF 1.9 4区 医学
Dental materials journal Pub Date : 2025-09-30 Epub Date: 2025-09-04 DOI: 10.4012/dmj.2024-390
Reza Al Fessi, Coen Pramono Danudiningrat, Koichi Kato, Anita Yuliati
{"title":"Structural and chemical properties of acellular scaffolds made from bovine ribs.","authors":"Reza Al Fessi, Coen Pramono Danudiningrat, Koichi Kato, Anita Yuliati","doi":"10.4012/dmj.2024-390","DOIUrl":"10.4012/dmj.2024-390","url":null,"abstract":"<p><p>This study was aimed to analyze the structural and chemical properties of scaffolds prepared using the bovine rib bone. The bovine rib bone was extracted and processed by water jet washing, hydrogen peroxide treatment, and freeze drying to obtain porous scaffolds. Scanning electron microscopy analysis revealed that the scaffold was composed of interconnected trabeculae networks with an average pore diameter of 223 µm. The bulk density was determined to be 0.582 g/cm<sup>3</sup>, and the porosity was 70.3%. X-ray diffraction analysis showed that the scaffold consisted of hydroxyapatite at a low crystallinity. It was further observed that the scaffold contained calcium and phosphate at a Ca/P ratio of 1.68, with a trace of proteins. When the scaffold was soaked in the phosphate buffered saline at 37°C, the weight of the scaffold decreased by 5.5% after 28 days. These results will provide a platform for subsequent processing to fabricate decellularized scaffolds.</p>","PeriodicalId":11065,"journal":{"name":"Dental materials journal","volume":" ","pages":"572-578"},"PeriodicalIF":1.9,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144991705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fluoride release and strength change of self-adhesive filling materials after storage in water. 自粘填料在水中贮存后的氟释放及强度变化。
IF 1.9 4区 医学
Dental materials journal Pub Date : 2025-09-30 Epub Date: 2025-07-17 DOI: 10.4012/dmj.2024-217
Feng Gao, Gabe Chadwell, Qing Hong, Maria Cuevas-Nunez, Kaveh Adel, Marcela R Carrilho, John C Mitchell
{"title":"Fluoride release and strength change of self-adhesive filling materials after storage in water.","authors":"Feng Gao, Gabe Chadwell, Qing Hong, Maria Cuevas-Nunez, Kaveh Adel, Marcela R Carrilho, John C Mitchell","doi":"10.4012/dmj.2024-217","DOIUrl":"10.4012/dmj.2024-217","url":null,"abstract":"<p><p>The introduction of self-adhesive filling materials has shown advantage in clinical use due to reduced procedure time. The newly developed self-adhesive Surefil One (SO) was compared to other current self-adhesive materials Vertise Flow (VF) and GC Fuji II LC (FJ). Shear bond strength (SBS) to dentin, flexural strength and water sorption were measured at 24 h and 4 weeks. Fluoride release was measured up to 4 weeks. SO showed intermediate fluoride-release that was higher than VF, but lower than FJ. SO demonstrated lower flexural strength than VF at 24 h but maintained that same strength to 4 weeks. SO had SBS comparable to FJ and VF at 24 h but it decreased at 4 weeks. Caution should be exercised when selecting and using SO, as well as the other two self-adhesive materials. Further studies are necessary to evaluate the efficacy for their clinical use in direct restorations.</p>","PeriodicalId":11065,"journal":{"name":"Dental materials journal","volume":" ","pages":"471-478"},"PeriodicalIF":1.9,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144648799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Less grams per square meter of woven reinforced fiber improves the flexural properties and color stability of glass fiber-reinforced plastics used for dental CAD-CAM. 减少每平方米编织增强纤维的克数，提高了用于牙科CAD-CAM的玻璃纤维增强塑料的弯曲性能和颜色稳定性。
IF 1.9 4区 医学
Dental materials journal Pub Date : 2025-09-30 Epub Date: 2025-08-13 DOI: 10.4012/dmj.2024-308
Shunsuke Nagata, Yukako Kato, Dai Saito, Masato Somemiya, Norio Hirayama, Yasuhiro Tanimoto
{"title":"Less grams per square meter of woven reinforced fiber improves the flexural properties and color stability of glass fiber-reinforced plastics used for dental CAD-CAM.","authors":"Shunsuke Nagata, Yukako Kato, Dai Saito, Masato Somemiya, Norio Hirayama, Yasuhiro Tanimoto","doi":"10.4012/dmj.2024-308","DOIUrl":"10.4012/dmj.2024-308","url":null,"abstract":"<p><p>This study investigates the effect of the grams per square meter (GSM) of glass fiber woven cloth used as reinforcement on the flexural properties and color stability of glass fiber-reinforced plastics (GFRPs) applied in computer-aided design-computer-aided manufacturing (CAD-CAM) restorations. Two types of GFRPs were fabricated using glass fiber woven cloth with different GSM values (215 and 47 g/m²), which were impregnated with thermoplastic acrylic resin. The control group consisted of acrylic resin without reinforcement, as well as two types of commercially available CAD-CAM GFRPs with a thermosetting epoxy resin matrix. As a result, GFRPs impregnated with thermoplastic acrylic resin showed higher flexural properties than commercially available GFRPs, and a lower GSM provided improved flexural properties and color stability compared with specimens using a higher GSM.</p>","PeriodicalId":11065,"journal":{"name":"Dental materials journal","volume":" ","pages":"518-524"},"PeriodicalIF":1.9,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144844838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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