European Journal of Oral Sciences最新文献_第10页

Effects of stress contagion on anxiogenic- and orofacial inflammatory pain-like behaviors with brain activation in mice 应激传染对小鼠焦虑性和口面部炎症性疼痛样行为的影响

IF 1.9 4区医学

European Journal of Oral Sciences Pub Date : 2023-06-28 DOI: 10.1111/eos.12942

Kajita Piriyaprasath, Mana Hasegawa, Yoshito Kakihara, Yuya Iwamoto, Rantaro Kamimura, Isao Saito, Noritaka Fujii, Kensuke Yamamura, Keiichiro Okamoto

{"title":"Effects of stress contagion on anxiogenic- and orofacial inflammatory pain-like behaviors with brain activation in mice","authors":"Kajita Piriyaprasath, Mana Hasegawa, Yoshito Kakihara, Yuya Iwamoto, Rantaro Kamimura, Isao Saito, Noritaka Fujii, Kensuke Yamamura, Keiichiro Okamoto","doi":"10.1111/eos.12942","DOIUrl":"10.1111/eos.12942","url":null,"abstract":"The conditions of stress contagion are induced in bystanders without direct experiences of stressful events. This study determined the effects of stress contagion on masseter muscle nociception in mice. Stress contagion was developed in the bystanders after cohabitating with a conspecific mouse subjected to social defeat stress for 10 days. On Day 11, stress contagion increased anxiety- and orofacial inflammatory pain-like behaviors. The c-Fos and FosB immunoreactivities evoked by masseter muscle stimulation were increased in the upper cervical spinal cord, while c-Fos expressions were increased in the rostral ventromedial medulla, including the lateral paragigantocellular reticular nucleus and nucleus raphe magnus in stress contagion mice. The level of serotonin in the rostral ventromedial medulla was increased under stress contagion, while the number of serotonin positive cells was increased in the lateral paragigantocellular reticular nucleus. Stress contagion increased c-Fos and FosB expressions in the anterior cingulate cortex and insular cortex, both of which were positively correlated with orofacial inflammatory pain-like behaviors. The level of brain-derived neurotrophic factor was increased in the insular cortex under stress contagion. These results indicate that stress contagion can cause neural changes in the brain, resulting in increased masseter muscle nociception, as seen in social defeat stress mice.","PeriodicalId":11983,"journal":{"name":"European Journal of Oral Sciences","volume":"131 4","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10214037","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: 1

Evaluating the stress of root canal treatment in patients and dentists compared to other dental treatments: A systematic review and meta-analysis 评估患者和牙医根管治疗与其他牙科治疗的压力:一项系统回顾和荟萃分析

IF 1.9 4区医学

European Journal of Oral Sciences Pub Date : 2023-06-25 DOI: 10.1111/eos.12941

Richard Huynh, Christine I. Peters, Sobia Zafar, Ove A. Peters

{"title":"Evaluating the stress of root canal treatment in patients and dentists compared to other dental treatments: A systematic review and meta-analysis","authors":"Richard Huynh, Christine I. Peters, Sobia Zafar, Ove A. Peters","doi":"10.1111/eos.12941","DOIUrl":"10.1111/eos.12941","url":null,"abstract":"This systematic review aimed to investigate whether root canal treatment caused greater stress than other dental treatments for patients and dentists. All peer-reviewed literature published in English between January 1990 and January 2023 was included. This included randomized/non-randomized control trials, cohort studies, case-control studies, and cross-sectional studies. An electronic search used PubMed, Scopus, Medline, Cochrane Collaboration, and Embase. Hand searching supplemented the screening pool. Studies examining physiological or psychological stress measures within patients or providers of dental treatment (dentists, dental specialists, and dental students) were eligible. The study must have reported on the stress outcome for root canal treatment and at least one other dental procedure. After screening 3639 eligible records, there were 23 studies included, varying from very-low to low certainty of evidence. This review found that root canal treatment was more psychologically stressful for patients than routine restorative or cleaning procedures. However, the stress of root canal treatment relative to other dental procedures, especially extractions, was inconclusive for both dental patients and providers. Since patients regard root canal treatment as more stress-evoking than other routine dental procedures, providers should endeavour to minimise their own bias toward root canal treatment when providing adequate information for an informed treatment choice.","PeriodicalId":11983,"journal":{"name":"European Journal of Oral Sciences","volume":"131 4","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eos.12941","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9910073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of long-term intake of liquid nutrition on the development and maintenance of the weight and size of the skull, mandible, and teeth in rats 长期摄入液体营养对大鼠头盖骨、下颌骨和牙齿重量和大小的发育和维持的影响

IF 1.9 4区医学

European Journal of Oral Sciences Pub Date : 2023-06-23 DOI: 10.1111/eos.12940

Filip Blasko, Bohuslav Novak, Karolina Gyonyorova, Boris Mravec

{"title":"Effect of long-term intake of liquid nutrition on the development and maintenance of the weight and size of the skull, mandible, and teeth in rats","authors":"Filip Blasko, Bohuslav Novak, Karolina Gyonyorova, Boris Mravec","doi":"10.1111/eos.12940","DOIUrl":"10.1111/eos.12940","url":null,"abstract":"The consistency of the diet may affect the development and maintenance of the muscular and bony parts of the masticatory apparatus. Therefore, we investigated the effect of chronic intake of liquid nutrition (Fresubin) on the growth and maintenance of the weight and size of the skull, mandible, and teeth in Wistar rats fed with liquid nutrition during different developmental periods: (i) from weaning to adulthood, (ii) only in the juvenile period, or (iii) only in adulthood. We found that in all groups of rats fed with liquid nutrition, the skull and the mandible were significantly lighter in weight than those of control rats fed exclusively with pelleted chow from weaning to adulthood. In addition, in rats fed with liquid nutrition, the length of the mandible was significantly increased, whereas the height of the mandible and the length of the upper incisors were reduced. Our data indicate that food consistency may profoundly affect the growth pattern and the maintenance of the mass and size of skull bones and teeth during different periods of life. The extent of the effect was found to depend on the period during which liquid nutrition is provided and on the duration of its intake. In conclusion, the findings indicate that prolonged intake of liquid nutrition can significantly affect the development of the bone part of the masticatory apparatus.","PeriodicalId":11983,"journal":{"name":"European Journal of Oral Sciences","volume":"131 4","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9856266","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: 1

Effect of irrigation acid solutions on cleaning and bond strength to post-space dentin 灌洗酸溶液对牙本质清洁及牙本质与牙本质结合强度的影响

IF 1.9 4区医学

European Journal of Oral Sciences Pub Date : 2023-06-09 DOI: 10.1111/eos.12939

C. de Melo Alencar, J. Ferrari Zaniboni, J. Felipe Besegato, A. Patricia Oliveira Barros, M. Bena Gélio, L Garcia Belizário, E. Maximiliano Fernandez Godoy, M. Carlos Kuga

{"title":"Effect of irrigation acid solutions on cleaning and bond strength to post-space dentin","authors":"C. de Melo Alencar, J. Ferrari Zaniboni, J. Felipe Besegato, A. Patricia Oliveira Barros, M. Bena Gélio, L Garcia Belizário, E. Maximiliano Fernandez Godoy, M. Carlos Kuga","doi":"10.1111/eos.12939","DOIUrl":"10.1111/eos.12939","url":null,"abstract":"This study evaluated the effects of irrigating solutions containing 5% boric acid + 1% citric acid or 1% peracetic acid + high concentration hydrogen peroxide on root cleaning and bond strength of cementation systems after 24 h and 6 months of glass fiber post cementation. One hundred and twenty roots were endodontically treated. The specimens were randomized into one of four treatments (n = 10): DW (distilled water); NaOCl2.5% + EDTA17% (2.5% sodium hypochlorite solution + 17% EDTA); PA1% + HP (1% peracetic acid solution + high concentration of hydrogen peroxide); BA5% + CA1% (5% boric acid associated with 1% citric acid). The cleaning efficacy in the cervical, middle, and apical thirds of the post-space, and the push-out bond strength at 24 h and 6 months after post cementation were evaluated by Kruskal-Wallis and two-way ANOVA tests, respectively. BA5% + CA1% showed statistically significantly superior cleaning efficacy compared to the other solutions. This irrigation protocol also resulted in higher bond strength at 24 h and 6 months, regardless of the root third considered, and this was statistically significantly higher than those seen for DW and PA1% + HP. For BA5% + CA1% irrigation protocol, type 1 adhesive failure was the most prevalent. Post-space irrigation with BA5% + CA1% provided both higher cleaning efficacy and better bond strength.","PeriodicalId":11983,"journal":{"name":"European Journal of Oral Sciences","volume":"131 4","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10226434","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

Effect of calcium hypochlorite and sodium thiosulfate on the bond strength to pulp chamber dentin: A laboratory investigation 次氯酸钙和硫代硫酸钠对牙本质与牙本质结合强度的影响:实验室研究

IF 1.9 4区医学

European Journal of Oral Sciences Pub Date : 2023-06-01 DOI: 10.1111/eos.12938

Guilherme Pauletto, Israel Bangel Carlotto, Lucas Saldanha da Rosa, Natália de Freitas Daudt, Gabriel Kalil Rocha Pereira, Carlos Alexandre Souza Bier

{"title":"Effect of calcium hypochlorite and sodium thiosulfate on the bond strength to pulp chamber dentin: A laboratory investigation","authors":"Guilherme Pauletto, Israel Bangel Carlotto, Lucas Saldanha da Rosa, Natália de Freitas Daudt, Gabriel Kalil Rocha Pereira, Carlos Alexandre Souza Bier","doi":"10.1111/eos.12938","DOIUrl":"10.1111/eos.12938","url":null,"abstract":"This study aimed to compare the effect of sodium hypochlorite (NaOCl) and calcium hypochlorite [Ca(OCl)2] on the bond strength to pulp chamber dentin when followed or not by the use of sodium thiosulfate (Na2S2O3). The pulp chamber of fifty human molars were divided into five groups (n = 10) according to the immersion protocol: 2.5% NaOCl; 2.5% NaOCl + 5% Na2S2O3; 2.5% Ca(OCl)2; 2.5% Ca(OCl)2 + 5% Na2S2O3; and 0.9% sodium chloride (NaCl; control). Subsequently, the samples were restored with resin composite. Three sticks each were obtained and subjected to microtensile testing. SEM/EDS analyses of the pulp chamber roof (n = 8) were carried out for mineral quantification. Elemental analysis data were investigated via one-way ANOVA and Tukey's post hoc, and bond strength data by post hoc pairwise comparisons using the Kruskal–Wallis test. Use of 2.5% NaOCl was associated with the lowest value of bond strength, while 2.5% Ca(OCl)2 had similar bond strength to that of the 0.9% NaCl control. Using 5% Na2S2O3 was able to increase the bond strength after 2.5% NaOCl, but not after 2.5% Ca(OCl)2. The group treated only with 2.5% Ca(OCl)2 had a higher Ca/P ratio on the dentin surface. Dentin treated with Ca(OCl)2 was not affected by Na2S2O3 and showed bond strength similar to the 0.9% NaCl.","PeriodicalId":11983,"journal":{"name":"European Journal of Oral Sciences","volume":"131 4","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9854976","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: 1

Effect of sound-induced repeated stress on the development of pain and inflammation in the temporomandibular joint of female and male rats 声音诱导的重复应激对雌雄大鼠颞下颌关节疼痛和炎症发展的影响

IF 1.9 4区医学

European Journal of Oral Sciences Pub Date : 2023-05-27 DOI: 10.1111/eos.12936

Fernanda Barchesi Zanelatto, Willians Fernando Vieira, Catarine Massucato Nishijima, César Renato Sartori, Carlos Amilcar Parada, Claudia Herrera Tambeli

{"title":"Effect of sound-induced repeated stress on the development of pain and inflammation in the temporomandibular joint of female and male rats","authors":"Fernanda Barchesi Zanelatto, Willians Fernando Vieira, Catarine Massucato Nishijima, César Renato Sartori, Carlos Amilcar Parada, Claudia Herrera Tambeli","doi":"10.1111/eos.12936","DOIUrl":"10.1111/eos.12936","url":null,"abstract":"Temporomandibular disorder (TMD) is a common painful condition of the temporomandibular joint (TMJ) and associated structures. Stress is a significant risk factor for developing this painful condition that predominantly affects women. This study aimed to test the hypothesis that stress increases the risk of developing TMJ pain by facilitating inflammatory mechanisms in female and male rats. To test this hypothesis, we evaluated TMJ carrageenan-induced expression of pro-inflammatory cytokines and migration of inflammatory cells and TMJ formalin-induced nociception in female and male rats submitted to a repeated stress protocol induced by sound. We found that sound-induced repeated stress facilitates TMJ inflammation and contributes to TMJ nociception development equally in females and males. We conclude that stress is a risk factor for developing painful TMJ conditions in males and females, at least in part, by favoring the inflammatory process similarly in both sexes.","PeriodicalId":11983,"journal":{"name":"European Journal of Oral Sciences","volume":"131 4","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9852569","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: 1

Short implants: Influence of different diameters, torques, and transmucosal heights of straight prosthetic abutments on screw preload loss after cycling 短种植体:不同直径、扭矩和跨粘膜高度对循环后螺钉预载荷损失的影响

IF 1.9 4区医学

European Journal of Oral Sciences Pub Date : 2023-05-22 DOI: 10.1111/eos.12937

Karla Regina Nogueira da Silva, Lucas Novaes Teixeira, Marcelo Lucchesi Teixeira, Guilherme Bovi Ambrosano, Elizabeth Ferreira Martinez

{"title":"Short implants: Influence of different diameters, torques, and transmucosal heights of straight prosthetic abutments on screw preload loss after cycling","authors":"Karla Regina Nogueira da Silva, Lucas Novaes Teixeira, Marcelo Lucchesi Teixeira, Guilherme Bovi Ambrosano, Elizabeth Ferreira Martinez","doi":"10.1111/eos.12937","DOIUrl":"10.1111/eos.12937","url":null,"abstract":"This study evaluated the influence of different implant diameters, insertion torques, and transmucosal heights on the loosening of abutments installed on short implants, after mechanical cycling. The Morse taper connection implants (n = 96) tested were 5 mm high, divided according to the platform diameter: 4 or 6 mm. A universal abutment was coupled to each implant (with different transmucosal heights: 1 or 5 mm). The sets were subdivided into 20- and 32-Ncm torque. After the cycle fatigue test, the detorque values were measured with a digital torque indicator. After mechanical cycling, the mean detorque values obtained for the abutment with 20-Ncm insertion torque were lower than for implants with 32-Ncm insertion torque, regardless of the platform diameter or transmucosal height. In the 20-Ncm torque group, there was no statistically significant difference in the detorque values between platform diameters or transmucosal heights. Otherwise, for 32-Ncm sets, a smaller platform diameter (4 mm), and a longer transmucosal height (5 mm) showed the lowest detorque values. In conclusion, implants placed with 32-Ncm insertion torque and abutments with 1 mm transmucosal height and a 6 mm implant diameter demonstrated the highest detorque values.","PeriodicalId":11983,"journal":{"name":"European Journal of Oral Sciences","volume":"131 4","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10212969","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

Effect of collagen sponge and flowable resin composite on pain management after free gingival graft harvesting: A randomized controlled clinical trial 胶原海绵和可流动树脂复合材料对游离牙龈移植术后疼痛管理的影响:一项随机对照临床试验

IF 1.9 4区医学

European Journal of Oral Sciences Pub Date : 2023-05-11 DOI: 10.1111/eos.12935

Jonathan Meza-Mauricio, Elisa Ribeiro Sá Tscherbakowski Mourão, Kelson Oliveira Marinho, Andrea Vergara-Buenaventura, Gerardo Mendoza-Azpur, Francisco Wilker Mustafa Gomes Muniz, Mauro Pedrine Santamaria, Marcelo Faveri

{"title":"Effect of collagen sponge and flowable resin composite on pain management after free gingival graft harvesting: A randomized controlled clinical trial","authors":"Jonathan Meza-Mauricio, Elisa Ribeiro Sá Tscherbakowski Mourão, Kelson Oliveira Marinho, Andrea Vergara-Buenaventura, Gerardo Mendoza-Azpur, Francisco Wilker Mustafa Gomes Muniz, Mauro Pedrine Santamaria, Marcelo Faveri","doi":"10.1111/eos.12935","DOIUrl":"10.1111/eos.12935","url":null,"abstract":"The aim of this study was to compare the effect of the application of a flowable resin composite coating, over a collagen sponge stabilized with suture, on postoperative pain after free gingival graft harvesting. Thirty-two free gingival grafts were harvested from the palate in 32 patients, who were subsequently randomized to have only a collagen sponge stabilized with sutures applied to the palatal wound (control), or to have the collagen sponge coated with a flowable resin composite (test). Patients were observed for 14 days, and the pain level was evaluated by using a numerical rating scale. The consumption of analgesics during the postoperative period and the characteristic of the graft were also analyzed. The patients in the test group reported having experienced significantly less pain statistically than the patients in the control group throughout the study. The consumption of analgesics was lower in the test group. The dimensions of harvested grafts in the control and test groups showed no significant differences in height, width, and thickness. In conclusion, the addition of flowable resin composite coating to the hemostatic collagen sponge on the palatal wound following free gingival graft harvesting helped to minimize postoperative pain.","PeriodicalId":11983,"journal":{"name":"European Journal of Oral Sciences","volume":"131 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9525052","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

Salivary fluoride levels after daily brushing with 5000 ppm fluoride toothpaste: A randomised, controlled clinical trial 每天用含氟5000ppm牙膏刷牙后唾液氟化物水平:一项随机对照临床试验

IF 1.9 4区医学

European Journal of Oral Sciences Pub Date : 2023-05-01 DOI: 10.1111/eos.12934

L. Staun Larsen, B. Nyvad, V. Baelum

{"title":"Salivary fluoride levels after daily brushing with 5000 ppm fluoride toothpaste: A randomised, controlled clinical trial","authors":"L. Staun Larsen, B. Nyvad, V. Baelum","doi":"10.1111/eos.12934","DOIUrl":"10.1111/eos.12934","url":null,"abstract":"This study explored salivary fluoride levels following toothbrushing with 5000 and 1450 ppm fluoride toothpaste and determined the decline in salivary fluoride levels following the return from 5000 to 1450 ppm fluoride toothpaste. The study was a randomised, controlled double-blind parallel clinical trial (n = 24/group) measuring salivary fluoride five times during a 3-week trial phase involving 2×/day use of 5000 or 1450 ppm fluoride toothpaste, and five times during an ensuing 2-week wash-out phase where all participants used 1450 ppm toothpaste. Salivary fluoride was measured using a fluoride electrode and data were analysed using multilevel mixed-effects linear regression. Baseline salivary fluoride geometric means were 0.014 and 0.016 ppm for the 1450 and 5000 ppm groups, while the values at the end of the trial phase were 0.023 and 0.044 ppm, respectively. During the trial phase, except at baseline, differences between groups were statistically significant. The salivary fluoride levels for the 5000 ppm group remained statistically significantly higher than for the 1450 ppm group only at the first measurement in the wash-out phase (≈30 h after the last 5000 ppm brushing), indicating that higher salivary fluoride levels resulting from use of 5000 ppm are sustained only as long as the brushing habit continues.","PeriodicalId":11983,"journal":{"name":"European Journal of Oral Sciences","volume":"131 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eos.12934","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9879992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of monomer composition and filler fraction on surface microhardness and depth of cure of experimental resin composites 单体组成和填料分数对树脂复合材料表面显微硬度和固化深度的影响

IF 1.9 4区医学

European Journal of Oral Sciences Pub Date : 2023-04-30 DOI: 10.1111/eos.12933

Diana Leyva del Rio, William Michael Johnston

{"title":"Effect of monomer composition and filler fraction on surface microhardness and depth of cure of experimental resin composites","authors":"Diana Leyva del Rio, William Michael Johnston","doi":"10.1111/eos.12933","DOIUrl":"10.1111/eos.12933","url":null,"abstract":"This study evaluated microhardness profiles and calculated depths of cure at 80% of the surface microhardness of experimental dental resin composites having different base monomer compositions and different filler fractions. Composites were prepared using four different base monomers (bisphenol A-glycidyl methacrylate [Bis-GMA], urethane dimethacrylate [UDMA], ethoxylated bisphenol-A dimethacrylate [Bis-EMA], and Fit-852) with triethylene glycol dimethacrylate (TEGDMA) used as a co-monomer at three filler:resin matrix weight percent fractions (50:50, 60:40, and 70:30). Uncured material was placed in 3D printed molds and light cured for 40 s from the top surface only. Knoop microhardness was measured at the top of the specimen, and at every 0.5 mm up to 4 mm in depth. Microhardness at the surface increased in all experimental composites as the filler fraction increased. When comparing base monomers, microhardness was the highest in UDMA-based composites, while Bis-GMA-based composites showed the lowest values. When comparing depth of cure as a function of base monomer type, both Bis-GMA and Bis-EMA showed significantly lower values than UDMA or Fit-852. Composites having 50 wt% filler showed a significantly higher depth of cure than those with 60 and 70 wt% filler. Base monomer and filler fraction significantly influence microhardness and depth of cure in these experimental composites.","PeriodicalId":11983,"journal":{"name":"European Journal of Oral Sciences","volume":"131 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eos.12933","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9896413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2