Journal of oral science最新文献_第2页

Clinical effect of equol supplementation in the treatment of desquamative gingivitis with 1-year follow-up 补充马钱子醇治疗脱屑性牙龈炎的临床效果及 1 年随访

IF 1.9 4区医学

Journal of oral science Pub Date : 2024-05-14 DOI: 10.2334/josnusd.24-0082

Aki Kawamoto, Naoyuki Sugano, Masako Sakai, Shouhei Ogisawa, Hiroshi Shiratsuchi, Keisuke Seki, Soichiro Manaka, Naoto Yoshinuma, Shuichi Sato

{"title":"Clinical effect of equol supplementation in the treatment of desquamative gingivitis with 1-year follow-up","authors":"Aki Kawamoto, Naoyuki Sugano, Masako Sakai, Shouhei Ogisawa, Hiroshi Shiratsuchi, Keisuke Seki, Soichiro Manaka, Naoto Yoshinuma, Shuichi Sato","doi":"10.2334/josnusd.24-0082","DOIUrl":"https://doi.org/10.2334/josnusd.24-0082","url":null,"abstract":"Purpose: Desquamative gingivitis (DG) is characterized by desquamative erosion, edematous erythema, and vesicle formation on the gingiva. Because of its prevalence in women during the pre- and postmenopausal period, its potential association with female hormones has been suggested. Equol is a soy isoflavone metabolite with a chemical structure similar to estrogen. Scientific evidence suggests that equol helps in alleviating menopausal symptoms. This study evaluated the clinical effect of a 12-month equol supplementation as a substitute for estrogen to alleviate DG symptoms.Methods: The study enrolled 16 women with DG who regularly visited Nihon University School of Dentistry Dental Hospital. Urinary equol levels, periodontal tissue examination, O’Leary’s plaque control record, stimulated saliva flow rate, and gingival pain-related questionnaires were evaluated before and after the 12-month daily intake of 10 mg equol supplement.Results: Equol supplementation led to a statistically significant improvement in bleeding on probing, visual findings, and reductions in the frequency and severity of gingival pain.Conclusion: Urinary equol testing and equol supplementation may be novel treatment options for female patients with DG.\u0000","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140932240","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

Touch-cure activation by marketed universal resin luting cements of their associated primer to dentin 市场上销售的通用树脂胶合剂在牙本质上的触碰固化活化其相关底漆

IF 1.9 4区医学

Journal of oral science Pub Date : 2024-05-03 DOI: 10.2334/josnusd.24-0019

Sarah Abdel-Gawad, Elisabeth Dursun, Romain Ceinos, Stéphane Le Goff, Timothy Fasham, Jean-Pierre Attal, Philippe Francois

{"title":"Touch-cure activation by marketed universal resin luting cements of their associated primer to dentin","authors":"Sarah Abdel-Gawad, Elisabeth Dursun, Romain Ceinos, Stéphane Le Goff, Timothy Fasham, Jean-Pierre Attal, Philippe Francois","doi":"10.2334/josnusd.24-0019","DOIUrl":"https://doi.org/10.2334/josnusd.24-0019","url":null,"abstract":"Purpose: The aim of this study was to investigate the dentin shear bond strength (SBS) and bonding interface of three recently developed “universal” resin luting cements based on different modalities.Methods: The dentin SBS and interfacial analysis of three recently launched “universal” resin luting cements, namely, G-Cem One, RelyX Universal and Panavia SA cement universal, were studied. All bonding protocols, including the previous use of their dedicated primer or universal adhesive in touch-cure mode or light-cure mode were performed. Variolink Esthetic LC used in conjunction with Scotchbond Universal Plus was used as a control group. For each group (n = 9), 10 specimens were tested for dentin SBS and two were examined by scanning electron microscopy. SBS were analyzed by two-way ANOVA followed by Dunnett’s test.Results: SBS values showed that the three “universal” resin luting cements tested exhibit different adhesive behaviors. G-Cem One with its touch-cure activated primer had a greater SBS to dentin (25.5 MPa) than that of the control group (22.1 MPa).Conclusion: “Universal” resin luting cements have variable efficacy when used in self-curing mode. The touch-curing mode is also of concern but may show high potential for some formulations.\u0000","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140835943","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

Reactive oxygen species generation required for autophagy induction during butyrate- or propionate-induced release of damage-associated molecular patterns from dying gingival epithelial Ca9-22 cells. 丁酸盐或丙酸盐诱导濒死牙龈上皮 Ca9-22 细胞释放损伤相关分子模式时，自噬诱导过程中需要产生活性氧。

IF 1.9 4区医学

Journal of oral science Pub Date : 2024-04-16 Epub Date: 2024-03-15 DOI: 10.2334/josnusd.23-0421

Kiwa Miyake, Yoshikazu Mikami, Takayuki Asayama, Taku Toriumi, Keiji Shinozuka, Morio Tonogi, Yoshiyuki Yonehara, Hiromasa Tsuda

{"title":"Reactive oxygen species generation required for autophagy induction during butyrate- or propionate-induced release of damage-associated molecular patterns from dying gingival epithelial Ca9-22 cells.","authors":"Kiwa Miyake, Yoshikazu Mikami, Takayuki Asayama, Taku Toriumi, Keiji Shinozuka, Morio Tonogi, Yoshiyuki Yonehara, Hiromasa Tsuda","doi":"10.2334/josnusd.23-0421","DOIUrl":"10.2334/josnusd.23-0421","url":null,"abstract":"Purpose: Bacterial cells in mature dental plaque produce a high concentration of short-chain fatty acids (SCFAs) such as butyrate and propionate. SCFA-treatment on human gingival epithelial Ca9-22 cells induced cell death. However, the exact mechanism underlying cell death remains unclear. In this study, the relationship between reactive oxygen species (ROS) and autophagy induction during SCFA-induced cell death was examined.Methods: Human gingival epithelial Ca9-22 cells were treated with butyrate or propionate to induce cell death and the number of dead cells were measured using SYTOX-green dye. A siRNA for ATG5 and N-acetylcysteine (NAC) were used for autophagy reduction and ROS-scavenging, respectively. Release of damage-associated molecular patterns (DAMPs) such as Sin3A-associated protein 130 (SAP130) and high-mobility group box 1 (HMGB1) were detected using western blot.Results: Reducing autophagy significantly suppressed SCFA-induced Ca9-22 cell death. ROS generation was observed upon SCFA treatment, and scavenging ROS with NAC decreased cell death. NAC also reduced the SCFA-induced increase in microtubule-associated protein 1 light chain 3B (LC3B)-I and LC3B-II, and mitigated the release of DAMPs.Conclusion: The findings suggest that ROS generation is necessary for autophagy, which is required for SCFA-induced cell death and accompanying DAMP release.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140143694","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 root dentin bond strength and intratubular biomineralization of a premixed calcium aluminate-based hydraulic bioceramic endodontic sealer. 评估预混合铝酸钙基液压生物陶瓷牙髓封闭剂的根牙本质粘结强度和管内生物矿化。

IF 1.9 4区医学

Journal of oral science Pub Date : 2024-04-16 Epub Date: 2024-02-08 DOI: 10.2334/josnusd.23-0235

Yu-Na Lee, Min-Kyeong Kim, Hee-Jin Kim, Mi-Kyung Yu, Kwang-Won Lee, Kyung-San Min

{"title":"Evaluation of the root dentin bond strength and intratubular biomineralization of a premixed calcium aluminate-based hydraulic bioceramic endodontic sealer.","authors":"Yu-Na Lee, Min-Kyeong Kim, Hee-Jin Kim, Mi-Kyung Yu, Kwang-Won Lee, Kyung-San Min","doi":"10.2334/josnusd.23-0235","DOIUrl":"10.2334/josnusd.23-0235","url":null,"abstract":"Purpose: This study evaluated the dentin bonding strength and biomineralization effect of a recently developed premixed calcium aluminate-based endodontic sealer (Dia-Root Bio Sealer) in comparison with existing calcium silicate-based sealers.Methods: The root canals of 80 mandibular premolars were filled with Dia-Root Bio Sealer, Endoseal MTA, EndoSequence BC Sealer, and AH Plus Bioceramic Sealer. Medial and apical specimens were then obtained by sectioning. The push-out bond strength was measured using the medial specimens, and the failure mode was recorded. Intratubular biomineralization in the apical specimens was analyzed using scanning electron microscopy and energy-dispersive X-ray spectroscopy (EDS). The data were analyzed using one-way analysis of variance followed by the Tukey test (P < 0.05).Results: The push-out bond strength of Dia-Root Bio Sealer was significantly higher than that of the other tested materials, and a cohesive failure pattern was observed in all groups. Dia-Root Bio Sealer also exhibited a significantly higher degree of biomineralization than the other groups, and EDS analysis indicated that the biomineralized precipitates were amorphous calcium phosphate.Conclusion: The results of this study indicate that Dia-Root Bio Sealer has the potential to be used as an adequate root canal sealer due to its favorable bonding performance.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139702760","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

Flexural strength of repaired denture base materials manufactured for the CAD-CAM technique. 采用 CAD-CAM 技术制造的修复义齿基托材料的抗弯强度。

IF 1.9 4区医学

Journal of oral science Pub Date : 2024-04-16 Epub Date: 2024-03-15 DOI: 10.2334/josnusd.23-0275

Şebnem Özatik, Canan Bural Alan

{"title":"Flexural strength of repaired denture base materials manufactured for the CAD-CAM technique.","authors":"Şebnem Özatik, Canan Bural Alan","doi":"10.2334/josnusd.23-0275","DOIUrl":"10.2334/josnusd.23-0275","url":null,"abstract":"Purpose: To evaluate the flexural properties of repaired poly(methylmethacrylate) (PMMA) denture base materials for computer-aided design/computer-aided manufacturing (CAD-CAM) and to compare them with heat-activated polymerized PMMA.Methods: A total of 288 specimens (65 × 10 × 2.5 mm) were prepared using both CAD-CAM and conventional blocks and repaired using autopolymerizing and visible-light polymerizing (VLC) materials. Microwave energy, water storage and hydroflask polymerization were applied as additional post-polymerization cycles after the repair process. The flexural strength (FS) of the specimens was evaluated using the three-point bending test. Data were evaluated statistically using 2-way ANOVA followed by Bonferroni's correction to determine the significance of differences between the groups (P ≤ 0.05).Results: The FS of the denture base materials for CAD-CAM was significantly higher than that for the heat-activated group (P ≤ 0.05). The FS was significantly highest when microwave energy was used for the post-polymerization cycle. The FS values for all groups repaired with VLC resin were significantly lower than for the autopolymerization group (P ≤ 0.05).Conclusion: The flexural properties of denture base materials for CAD-CAM repaired using autopolymerizing acrylic resins can recover by 50-70%. Additional post-polymerization cycles for autopolymerizing repair resin can be suggested to improve the clinical service properties of repaired dentures.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140143693","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

Preoperative oral hygiene treatment reduces bacterial transport and colonization during intubation for orthopedic surgery 术前口腔卫生治疗可减少骨科手术插管期间的细菌迁移和定植

IF 1.9 4区医学

Journal of oral science Pub Date : 2024-04-16 DOI: 10.2334/josnusd.23-0425

Yu Shuai, Xin Wang, Songli Chen, Tixue Huang, Zhao Wang, Yi Zhang

{"title":"Preoperative oral hygiene treatment reduces bacterial transport and colonization during intubation for orthopedic surgery","authors":"Yu Shuai, Xin Wang, Songli Chen, Tixue Huang, Zhao Wang, Yi Zhang","doi":"10.2334/josnusd.23-0425","DOIUrl":"https://doi.org/10.2334/josnusd.23-0425","url":null,"abstract":"Purpose: The process of infection by bacteria and viruses involves invasion, establishment, growth, and parasitization. Poor oral hygiene and dysbiosis are significant risk factors for pneumonia. The aim of this study was to evaluate bacterial transport into the trachea during intubation for orthopedic surgery and the impact of oral hygiene treatment.Methods: The study cohort included 53 patients with fracture who underwent surgical procedures under general anesthesia and were divided into two groups: an oral hygiene treatment (OHT) group (n = 27) and a control group (n = 26). Before intubation, the OHT group underwent preoperative oral hygiene treatment. Microbiological culture was used for detection and counting of bacteria from the oropharynx, trachea, and tip of the endotracheal tube (ETT).Results: Patients in the OHT group had a lower pathogen detection rate and lower degree of bacterial colonization in the oropharynx, trachea, and ETT tip.Conclusion: Preoperative oral hygiene treatment is able to reduce bacterial transport and colonization during orthopedic surgery, thus providing an important adjunct to pre-anesthesia care.\u0000","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140594178","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

Biological and physical properties of calcium hydroxide-based pulp-capping materials and their modifications. 基于氢氧化钙的纸浆盖材料及其改性的生物和物理特性。

IF 1.9 4区医学

Journal of oral science Pub Date : 2024-04-16 Epub Date: 2024-02-08 DOI: 10.2334/josnusd.23-0288

Dilek Akin, Cigdem Atalayin Ozkaya, Guliz Armagan, Dervis Birim, Mustafa Ates, Huseyin Tezel

{"title":"Biological and physical properties of calcium hydroxide-based pulp-capping materials and their modifications.","authors":"Dilek Akin, Cigdem Atalayin Ozkaya, Guliz Armagan, Dervis Birim, Mustafa Ates, Huseyin Tezel","doi":"10.2334/josnusd.23-0288","DOIUrl":"10.2334/josnusd.23-0288","url":null,"abstract":"Purpose: To evaluate the biological and physical properties of calcium hydroxide-containing pulp-capping materials and their modifications with different solutions and antioxidant Resveratrol (RES) addition.Methods: Calcium hydroxide+distilled-water:C, calcium hydroxide+saline:S, calcium hydroxide+synthetic tissue fluid:STF, Dycal:D, calcium hydroxide+distilled-water+RES:C+RES, calcium hydroxide+saline+RES:S+RES, calcium hydroxide+synthetic tissue fluid+RES:STF+RES, Dycal+RES:D+RES were tested. Cytotoxicity was determined by WST-1. Antibacterial-activity was evaluated by agar-diffusion. The water-absorption and solubility were examined for ISO-6876 and ISO-3107. The color-change was evaluated by spectrophotometer. Radiopacity was evaluated for ISO-6876 and ISO-9917. The normal distribution and homogeneity were determined and comparisons were made with appropriate analysis and post hoc tests (P < 0.05).Results: The highest cell-viability was determined in the C+RES and the lowest was in D and D+RES after 24 h (P < 0.0001). RES-addition increased cell-viability and the highest rate was detected in C+RES, S+RES and STF+RES after 48 h (P < 0.0001). A limited inhibition-zone against Streptococcus mutans was detected in D and D+RES. RES-addition did not change the water-absorption in S and STF or the solubility in S group.Conclusion: RES-addition may be used to increase the biocompatibility of calcium hydroxide without any adverse effect on physical properties. Saline may be the first choice as a mixing solution.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139702759","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

Possible roles of short-chain fatty acids produced by oral bacteria in the development of alveolar osteitis. 口腔细菌产生的短链脂肪酸在牙槽骨炎发展过程中的可能作用。

IF 1.9 4区医学

Journal of oral science Pub Date : 2024-04-16 Epub Date: 2024-02-29 DOI: 10.2334/josnusd.23-0410

Takayuki Asayama, Ayaka Takada, Yoshikazu Mikami, Hirofumi Yamaguchi, Muneaki Tamura, Kunihito Matsumoto, Kiwa Miyake, Yoshiyuki Yonehara, Hiromasa Tsuda

{"title":"Possible roles of short-chain fatty acids produced by oral bacteria in the development of alveolar osteitis.","authors":"Takayuki Asayama, Ayaka Takada, Yoshikazu Mikami, Hirofumi Yamaguchi, Muneaki Tamura, Kunihito Matsumoto, Kiwa Miyake, Yoshiyuki Yonehara, Hiromasa Tsuda","doi":"10.2334/josnusd.23-0410","DOIUrl":"10.2334/josnusd.23-0410","url":null,"abstract":"Purpose: Alveolar osteitis (dry sockets) is a painful condition characterized by a limited immune response. It is typically caused by the removal of blood clots from extracted tooth sockets, which leads to the fermentation of trapped food remnants by oral bacteria in the cavities, producing high concentrations of short-chain fatty acids (SCFAs). This study examined the effects of SCFAs on immunity and bone metabolism.Methods: Mouse macrophage Raw264.7 cells were treated with oral bacteria supernatants or SCFA mixtures, and inducible nitric oxide synthase (iNOS) levels were determined by western blot. The same cells were treated with SCFA mixtures in the presence of receptor activator of nuclear factor-kappa B ligand (RANKL), and osteoclast-like cells were counted. MC3T3-E1 cells were treated with SCFA mixtures and stained with alizarin red S.Results: Raw264.7 cells treated with oral bacterial culture supernatants of Porphyromonas gingivalis and Fusobacterium nucleatum inhibited lipopolysaccharide (LPS)-induced iNOS production, likely due to SCFA content. SCFA mixtures mimicking these supernatants inhibited the number of RANKL-induced tartrate-resistant acid phosphatase (TRAP)-positive cells and MC3T3-E1 cell mineralization.Conclusion: These data suggest that SCFAs produced by P. gingivalis and F. nucleatum may reduce the inflammatory response and mildly induce mineralization of the alveolar walls. These results may contribute to the understanding of alveolar osteitis.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139990384","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

Association between oral health and nutritional status among older patients requiring long-term care who received home-visit dental care 接受上门牙科护理的需要长期护理的老年患者的口腔健康与营养状况之间的关系

IF 1.9 4区医学

Journal of oral science Pub Date : 2024-03-08 DOI: 10.2334/josnusd.23-0344

Yutaka Fukuyama, Takamasa Komiyama, Takashi Ohi, Yoshinori Hattori

{"title":"Association between oral health and nutritional status among older patients requiring long-term care who received home-visit dental care","authors":"Yutaka Fukuyama, Takamasa Komiyama, Takashi Ohi, Yoshinori Hattori","doi":"10.2334/josnusd.23-0344","DOIUrl":"https://doi.org/10.2334/josnusd.23-0344","url":null,"abstract":"Purpose: This study examined the association between oral health and nutritional status among older patients receiving home-visit dental care.Methods: This study enrolled 110 older patients (age ≥65 years) requiring long-term care who received home-visit dental care. The oral health indicators evaluated included number of teeth, occlusal support, number of functional teeth, tongue pressure, tongue coating index (TCI), and rinsing ability. Nutritional indicators included skeletal muscle mass index (SMI) and the mini-nutritional assessment short-form (MNA-SF). A multivariate modified Poisson regression analysis (adjusted for age, sex, medical history, care level, and housing type) was used to calculate prevalence ratios and 95% confidence intervals (CIs).Results: The prevalence ratio for low SMI was not significantly higher for patients with ≥20 teeth than for those with 1-19 or no teeth. Number of teeth was not significantly associated with MNA-SF score. A high TCI score (2.15, 95% CI: 1.07-4.32) and poor rinsing ability (2.32, 95% CI: 1.25-4.30) were significantly associated with low SMI. High TCI scores were associated with low scores in MNA-SF categories (1.25, 95% CI: 1.01-1.55).Conclusion: TCI and rinsing ability, rather than number of teeth, were associated with nutritional status in older patients requiring long-term care.\u0000","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140056504","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

Assessment of the color stability of two silicone elastomers for maxillofacial prostheses upon exposure to cold beverages 评估两种用于颌面修复体的硅树脂弹性体在接触冷饮后的颜色稳定性

IF 1.9 4区医学

Journal of oral science Pub Date : 2024-03-05 DOI: 10.2334/josnusd.23-0360

Anshul Chugh, Mariko Hattori, Marwa A. Aboelez, Yuka I. Sumita, Noriyuki Wakabayashi

{"title":"Assessment of the color stability of two silicone elastomers for maxillofacial prostheses upon exposure to cold beverages","authors":"Anshul Chugh, Mariko Hattori, Marwa A. Aboelez, Yuka I. Sumita, Noriyuki Wakabayashi","doi":"10.2334/josnusd.23-0360","DOIUrl":"https://doi.org/10.2334/josnusd.23-0360","url":null,"abstract":"Purpose: This study investigated the color stability of different commercially available silicone materials for facial prostheses upon exposure to everyday beverages. It was hypothesized that the beverages would not alter the color of the silicone under conditions simulating daily exposure.Methods: Sixty specimens were fabricated using two materials – VST-50 and Silfy – and exposed to commercially available cold mineral water, tea, or coffee. Specimen color was evaluated on days 1 and 15. The color was measured with a spectrophotometer based on CIELab system and color differences were calculated as ΔE. Statistical analysis was performed using the Kruskal-Wallis test and Mann-Whitney U test.Results: The mean ΔE values after 15 days of exposure to mineral water, cold green tea, and coffee were 1.016, 3.480, and 3.636 for VST-50 and 0.440, 0.798, and 1.425 for Silfy, respectively. Both materials showed significant differences in color, and VST-50 showed a greater color change than Silfy, especially for coffee.Conclusion: Pigmented silicone elastomers have low color stability, leading to an overall color change in silicone prostheses when exposed to pigmented beverages. Color changes in such prostheses can be mitigated by selecting materials with better color stability to extend their longevity.\u0000","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140025688","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