Acta Biomaterialia Odontologica Scandinavica最新文献

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Anti-demineralization effect of desensitizer containing copolymer and sodium fluoride on root dentin - a transverse microradiographic study. 含共聚物和氟化钠的脱敏剂对牙根本质的防脱矿作用——横向显微放射学研究。
Acta Biomaterialia Odontologica Scandinavica Pub Date : 2019-03-20 eCollection Date: 2019-01-01 DOI: 10.1080/23337931.2019.1591967
Kazuaki Kawamura, Yuichi Kunimatsu, Takafumi Nakano, Haruhiko Hasegawa, Hirohisa Arakawa, Yoshiharu Mukai
{"title":"Anti-demineralization effect of desensitizer containing copolymer and sodium fluoride on root dentin - a transverse microradiographic study.","authors":"Kazuaki Kawamura,&nbsp;Yuichi Kunimatsu,&nbsp;Takafumi Nakano,&nbsp;Haruhiko Hasegawa,&nbsp;Hirohisa Arakawa,&nbsp;Yoshiharu Mukai","doi":"10.1080/23337931.2019.1591967","DOIUrl":"https://doi.org/10.1080/23337931.2019.1591967","url":null,"abstract":"<p><p><b>Objective:</b> To evaluate anti-demineralization effects of dentin desensitizer containing sodium fluoride and methacrylate-co-p-styrene sulfonic acid (MS polymer) on root dentin using transverse microradiography (TMR). <b>Material and methods:</b> Twenty-four dentin specimens were divided into four groups: MSO (no fluoride), MSF (3000 ppm F), FJL (9000 ppm F), and Control. In MSO and MSF, each desensitizer was rubbed into the dentin surfaces for 10 s then left for 20 s. In FJL, paste containing 9000 ppm F was applied onto the surface for 30 s. All specimens, including the Controls, were rinsed with deionized water, dried and an area of their surface exposed to pH 5.0 acidic solution, refreshed every 24 h, for 4 days. Sections 300-µm-thick were assessed by TMR. Mineral profiles and integrated mineral loss (IML) of lesions were analyzed by dedicated software. IML was analyzed with one-way ANOVA and Tukey's test. <b>Results:</b> MSF and FJL specimens showed high mineral volume % at the surface and in lesions, and significantly lower IML than the other groups (<i>p</i> < .05). <b>Conclusion:</b> Dentin desensitizer containing 3000 ppm fluoride and MS polymer has the same anti-demineralization effect as does a fluoride paste containing 9000 ppm F.</p>","PeriodicalId":6997,"journal":{"name":"Acta Biomaterialia Odontologica Scandinavica","volume":"5 1","pages":"38-43"},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23337931.2019.1591967","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37252829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Fracture resistance of simulated immature teeth treated with a regenerative endodontic protocol. 再生牙髓治疗模拟未成熟牙的抗折断性。
Acta Biomaterialia Odontologica Scandinavica Pub Date : 2019-01-31 eCollection Date: 2019-01-01 DOI: 10.1080/23337931.2019.1570822
Mohamed Raouf W Ali, Manal Mustafa, Asgeir Bårdsen, Athanasia Bletsa
{"title":"Fracture resistance of simulated immature teeth treated with a regenerative endodontic protocol.","authors":"Mohamed Raouf W Ali,&nbsp;Manal Mustafa,&nbsp;Asgeir Bårdsen,&nbsp;Athanasia Bletsa","doi":"10.1080/23337931.2019.1570822","DOIUrl":"https://doi.org/10.1080/23337931.2019.1570822","url":null,"abstract":"<p><p>This study aims to evaluate fracture resistance of simulated immature teeth after treatment with regenerative endodontic procedure (REP) using tricalcium silicate cements (TSCs) as cervical plugs. Bovine incisors were sectioned to standard crown/root ratio. Pulp tissue was removed and canals were enlarged to a standardized diameter. Teeth were then treated with a REP protocol consisting of NaOCl and EDTA irrigation, intracanal medication with triple-antibiotic paste for 14 days followed by a TSC cervical seal and composite restoration. Teeth were divided into groups according to the material used; Mineral-Trioxide-Aggregate (MTA), Biodentine, TotalFill. Teeth filled with guttapercha (GP) and intact teeth served as controls. All teeth subjected to an increasing compressive force (rate of 0.05 mm/s at a 45° angle to the long axis of the tooth) until fracture. All treated teeth exhibited significantly lower resistance to fracture compared to the intact teeth but no difference was found between the TSC groups (Kruskal-Wallis, Dunn's multiple comparison, <i>p</i> < .05). TSCs applied at the cervical area of simulated immature teeth treated with REP did not reinforce fracture resistance.</p>","PeriodicalId":6997,"journal":{"name":"Acta Biomaterialia Odontologica Scandinavica","volume":"5 1","pages":"30-37"},"PeriodicalIF":0.0,"publicationDate":"2019-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23337931.2019.1570822","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36568868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Debonding mechanism of zirconia and lithium disilicate resin cemented to dentin. 氧化锆和二硅酸锂树脂胶结牙本质的脱粘机理。
Acta Biomaterialia Odontologica Scandinavica Pub Date : 2019-01-24 eCollection Date: 2019-01-01 DOI: 10.1080/23337931.2018.1561188
Mina Aker Sagen, Ketil Kvam, Eystein Ivar Ruyter, Hans Jacob Rønold
{"title":"Debonding mechanism of zirconia and lithium disilicate resin cemented to dentin.","authors":"Mina Aker Sagen,&nbsp;Ketil Kvam,&nbsp;Eystein Ivar Ruyter,&nbsp;Hans Jacob Rønold","doi":"10.1080/23337931.2018.1561188","DOIUrl":"https://doi.org/10.1080/23337931.2018.1561188","url":null,"abstract":"<p><p>To evaluate debonding mechanism of zirconia and lithium disilicate cemented to dentin mimicking what could occur in a clinical setting. A null hypothesis of no difference in tensile bond strength between groups of zirconia and lithium disilicate cemented with resin cements was also tested. Zirconia rods (<i>n</i> = 100) were randomly assigned to two different surface treatment groups; air borne particle abrasion and hot etching by potassium hydrogen difluoride (KHF<sub>2</sub>). Lithium disilicate rods (<i>n</i> = 50) were surface etched by hydrofluoric acid (HF). Five different dual cure resin cements were used for cementing rods to bovine dentin. Ten rods of each test group were cemented with each cement. Test specimens were thermocycled before tensile bond strength testing. Fracture morphology was visualized by light microscope. Mean surface roughness (Sa value) was calculated for randomly selected rods. Cohesive fracture in cement was the most frequent observed fracture morphology. Combination of adhesive and cohesive fractures were second most common. Fracture characterized as an adhesive between rod and cement was not observed for KHF<sub>2</sub> etched zirconia. Highest mean tensile bond strength was observed when cementing air borne particle abraded zirconia with Variolink Esthetic (Ivoclar Vivadent). All surface treatments resulted in Sa values that were significant different from each other. The number of cohesive cement fractures observed suggested that the cement was the weakest link in bonding of zirconia and lithium disilicate.</p>","PeriodicalId":6997,"journal":{"name":"Acta Biomaterialia Odontologica Scandinavica","volume":"5 1","pages":"22-29"},"PeriodicalIF":0.0,"publicationDate":"2019-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23337931.2018.1561188","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36977827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
The effect of antimicrobial additives on the properties of dental glass-ionomer cements: a review. 抗菌添加剂对牙科玻璃-离子水门汀特性的影响:综述。
Acta Biomaterialia Odontologica Scandinavica Pub Date : 2019-01-10 eCollection Date: 2019-01-01 DOI: 10.1080/23337931.2018.1539623
Tamer Tüzüner, Aleksandar Dimkov, John W Nicholson
{"title":"The effect of antimicrobial additives on the properties of dental glass-ionomer cements: a review.","authors":"Tamer Tüzüner, Aleksandar Dimkov, John W Nicholson","doi":"10.1080/23337931.2018.1539623","DOIUrl":"10.1080/23337931.2018.1539623","url":null,"abstract":"<p><p><b>Aim:</b> The aim of this article is to review the literature on the use of antimicrobial additives in glass-ionomer dental cements. <b>Method:</b> An electronic search between 1987 and the end of 2017 was performed using PubMed, Web of Science and Google search engines with the terms glass-ionomer, glass polyalkenoate, antibacterial and antimicrobial as the key words. The search was refined by excluding the majority of references concerned with cement antimicrobial properties only. Extra papers already known to the authors were added to those considered. <b>Results:</b> A total of 92 relevant articles have been cited in the review of which 55 are specifically concerned with the enhancement of antibacterial properties of glass-ionomers, both conventional and resin-modified, with additives. In addition, information is included on the uses of glass-ionomers and the biological properties of the antibacterial additives employed. There are several reports that show that additives are typically released by diffusion, and that a high proportion is usually left behind, trapped in the cement. Additives generally increase setting times of cements, and reduce mechanical properties. However, smaller amounts of additive have only slight effects and the longer-term durability of cements appears unaffected. <b>Conclusion:</b> Modified glass-ionomer cements seem to be acceptable for clinical use, especially in the Atraumatic Restorative Treatment (ART) technique.</p>","PeriodicalId":6997,"journal":{"name":"Acta Biomaterialia Odontologica Scandinavica","volume":"5 1","pages":"9-21"},"PeriodicalIF":0.0,"publicationDate":"2019-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6327935/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36915158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An in vitro model to assess effects of a desensitising agent on bacterial biofilm formation. 体外模型评估脱敏剂对细菌生物膜形成的影响。
Acta Biomaterialia Odontologica Scandinavica Pub Date : 2018-12-24 eCollection Date: 2019-01-01 DOI: 10.1080/23337931.2018.1544847
Jamie Coulter, Nicholas S Jakubovics, Philip M Preshaw, Matthew J German
{"title":"An <i>in vitro</i> model to assess effects of a desensitising agent on bacterial biofilm formation.","authors":"Jamie Coulter,&nbsp;Nicholas S Jakubovics,&nbsp;Philip M Preshaw,&nbsp;Matthew J German","doi":"10.1080/23337931.2018.1544847","DOIUrl":"https://doi.org/10.1080/23337931.2018.1544847","url":null,"abstract":"<p><p>Desensitising agents are added to dentifrices to occlude exposed dentine tubules and reduce pain associated with dentine hypersensitivity. In occluding the tubules these agents may alter the surface layer of the dentine and consequently affect bacterial biofilm formation. This research sought to examine the effects of desensitising agents on dentinal biofilms using an in vitro model. A constant depth film fermenter (CDFF) was selected to mimic the oral environment and human dentine with exposed tubules was analysed. Calcium sodium phosphosilicate (CSPS) was selected as a model desensitising agent. Dentine discs were treated with pumice or CSPS-containing dentifrices with or without fluoride, or left untreated (control). Dual-species biofilms of <i>Streptococcus mutans</i> and <i>Streptococcus sobrinus</i> were grown in artificial saliva and analysed by viable counts, polymerase chain reaction (PCR) and scanning electron microscopy (SEM). SEM images confirmed the presence of occluded tubules after CSPS application and demonstrated the formation of biofilms containing extracellular matrix material. Analysis of PCR and viable count data using a one-way ANOVA showed no significant differences for bacterial composition for any of the four treatments. There were, however, trends towards increased numbers of bacteria for the pumice and CSPS treated samples which was reversed by the addition of fluoride to CSPS. In conclusion, CSPS was not found to have a significant effect on biofilms and an <i>in vitro</i> model for testing desensitising agents has been developed, however, further work is required to improve the reproducibility of the biofilms formed and to explore the trends seen.</p>","PeriodicalId":6997,"journal":{"name":"Acta Biomaterialia Odontologica Scandinavica","volume":"5 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2018-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23337931.2018.1544847","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36915157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Clinical comparison of conventional and additive manufactured stabilization splints. 常规与增材制造稳定夹板的临床比较。
Acta Biomaterialia Odontologica Scandinavica Pub Date : 2018-08-13 eCollection Date: 2018-01-01 DOI: 10.1080/23337931.2018.1497491
Christian Berntsen, Martin Kleven, Marianne Heian, Carl Hjortsjö
{"title":"Clinical comparison of conventional and additive manufactured stabilization splints.","authors":"Christian Berntsen,&nbsp;Martin Kleven,&nbsp;Marianne Heian,&nbsp;Carl Hjortsjö","doi":"10.1080/23337931.2018.1497491","DOIUrl":"https://doi.org/10.1080/23337931.2018.1497491","url":null,"abstract":"<p><p>The aim of this study was to compare conventional and digital additive manufacturing of hard occlusal stabilization splints (SS) using technical and clinical parameters. 14 subjects were subjected to DC/TMD Axis I clinical examination protocol and Axis II questionnaire. The subjects underwent treatment with splints over a period of 12 weeks. All subjects underwent both conventional alginate impression and intraoral digital scanning. Seven subjects received conventional manufactured stabilization splints (CM-SS), and seven subjects received CAD-CAM additive manufactured stabilization splints (AM-SS). 12 subjects completed the 12 weeks follow-up period. The subjects significantly preferred digital intraoral scanning compared to conventional alginate impression. There was a significant difference in VAS between CM-SS and AM-SS. The mean VAS result was 15 for AM-SS and 42 for CM-SS, 0 represented excellent comfort and 100 very uncomfortable. This was significant. Splint manufacturing method had no influence on treatment outcome. There was no significant difference in mean delta change for unassisted jaw opening from baseline to 12 weeks between the two groups, for CM-SS it was 2 mm difference and for AM-SS the difference was 3 mm. All subjects in both treatment groups showed improved oral function. In this study, the scanning procedure is more accepted by the subjects than alginate impressions, however the first procedure was more time consuming.</p>","PeriodicalId":6997,"journal":{"name":"Acta Biomaterialia Odontologica Scandinavica","volume":"4 1","pages":"81-89"},"PeriodicalIF":0.0,"publicationDate":"2018-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23337931.2018.1497491","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36412834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 28
Effect of discontinuous glass fibers on mechanical properties of glass ionomer cement. 不连续玻璃纤维对玻璃离子水泥力学性能的影响。
Acta Biomaterialia Odontologica Scandinavica Pub Date : 2018-07-31 eCollection Date: 2018-01-01 DOI: 10.1080/23337931.2018.1491798
Sufyan K Garoushi, Jingwei He, Pekka K Vallittu, Lippo V J Lassila
{"title":"Effect of discontinuous glass fibers on mechanical properties of glass ionomer cement.","authors":"Sufyan K Garoushi,&nbsp;Jingwei He,&nbsp;Pekka K Vallittu,&nbsp;Lippo V J Lassila","doi":"10.1080/23337931.2018.1491798","DOIUrl":"https://doi.org/10.1080/23337931.2018.1491798","url":null,"abstract":"<p><strong>Aim: </strong>This study investigated the reinforcing effect of discontinuous glass microfibers with various loading fractions on selected mechanical properties of self-cure glass ionomer cement (GIC).</p><p><strong>Method: </strong>Experimental fiber reinforced GIC (Exp-GIC) was prepared by adding discontinuous glass microfiber (silane/non-silane treated) of 200-300 µm in length to the powder of self-cure GIC (GC Fuji IX) with various mass ratios (15, 20, 25, 35, and 45 mass%) using a high speed mixing device. Flexural strength, flexural modulus, work of fracture, compressive strength and diametral tensile strength were determined for each experimental and control materials. The specimens (<i>n</i> = 8) were wet stored (37 °C for one day) before testing. Scanning electron microscopy equipped with energy dispersive spectrometer was used to analysis the surface of silanized or non-silanized fibers after treated with cement liquid. The results were analyzed with using multivariate analysis of variance MANOVA.</p><p><strong>Results: </strong>Fiber-reinforced GIC (25 mass%) had significantly higher mechanical performance of flexural modulus (3.8 GPa), flexural strength (48 MPa), and diametral tensile strength (18 MPa) (<i>p</i> < .05) compared to unreinforced material (0.9 GPa, 26 MPa and 8 MPa). No statistical significant difference in tested mechanical properties was recorded between silanized and non-silanized Exp-GIC groups. Compressive strength did not show any significant differences (<i>p</i> > .05) between the fiber-reinforced and unreinforced GIC.</p><p><strong>Conclusion: </strong>The use of discontinuous glass microfibers with self-cure GIC matrix considerably increased the all of the studied properties except compressive strength.</p>","PeriodicalId":6997,"journal":{"name":"Acta Biomaterialia Odontologica Scandinavica","volume":"4 1","pages":"72-80"},"PeriodicalIF":0.0,"publicationDate":"2018-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23337931.2018.1491798","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36377086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
Maturation processes in glass-ionomer dental cements. 玻璃离子牙科胶合剂的成熟过程。
Acta Biomaterialia Odontologica Scandinavica Pub Date : 2018-07-31 eCollection Date: 2018-01-01 DOI: 10.1080/23337931.2018.1497492
John W Nicholson
{"title":"Maturation processes in glass-ionomer dental cements.","authors":"John W Nicholson","doi":"10.1080/23337931.2018.1497492","DOIUrl":"https://doi.org/10.1080/23337931.2018.1497492","url":null,"abstract":"<p><p>Glass-ionomer cements are used for a variety of tooth-repair functions in clinical dentistry. They are formed by reaction of a basic glass powder with a solution of polymeric water-soluble acid, usually polyacrylic acid. After the initial neutralization reaction, by which the cement hardens, various maturation reactions occur. Changes induced by these maturation reactions are identified as: increase in strength; reduction in plasticity; improvement in opacity; and increase in proportion of tightly bound water. In addition, in contact with the tooth, an ion-exchange interfacial layer is gradually formed. This is mechanically strong and chemically-resistant. These changes are described in the current paper, which reviews the extent to which they occur, and reports what is know about the chemistry that underlies them. Processes involving slow diffusion of various ions and of water through the set cement bring about these changes. They include a secondary setting reaction to form a phosphate-based phase, binding of water to co-ordination sites around metal cations and to a hydration sheath around the polymer molecules, and possibly reaction of water with glass particle surfaces to form silanol groups. Evidence from a wide range of literature sources is used to be build up a detailed picture of the chemistry of the maturation processes, and gaps in our understanding are highlighted. The article concludes that, given the importance of glass-ionomers in contemporary dentistry, it is important to know the extent to which such maturation processes occur in current cement formulations, and also to determine how rapidly they take place.</p>","PeriodicalId":6997,"journal":{"name":"Acta Biomaterialia Odontologica Scandinavica","volume":"4 1","pages":"63-71"},"PeriodicalIF":0.0,"publicationDate":"2018-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23337931.2018.1497492","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36377085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 50
Presence and leaching of bisphenol a (BPA) from dental materials. 牙科材料中双酚a (BPA)的存在和浸出。
Acta Biomaterialia Odontologica Scandinavica Pub Date : 2018-05-27 eCollection Date: 2018-01-01 DOI: 10.1080/23337931.2018.1476869
Rune Becher, Hanne Wellendorf, Amrit Kaur Sakhi, Jan Tore Samuelsen, Cathrine Thomsen, Anette Kocbach Bølling, Hilde Molvig Kopperud
{"title":"Presence and leaching of bisphenol a (BPA) from dental materials.","authors":"Rune Becher,&nbsp;Hanne Wellendorf,&nbsp;Amrit Kaur Sakhi,&nbsp;Jan Tore Samuelsen,&nbsp;Cathrine Thomsen,&nbsp;Anette Kocbach Bølling,&nbsp;Hilde Molvig Kopperud","doi":"10.1080/23337931.2018.1476869","DOIUrl":"https://doi.org/10.1080/23337931.2018.1476869","url":null,"abstract":"<p><p>BPA has been reported to leach from some resin based dental restorative materials and materials used for orthodontic treatment. To confirm and update previous findings, especially in light of the new temporary lower threshold value for tolerable daily BPA intake, we have investigated the leaching of BPA from 4 composite filling materials, 3 sealants and 2 orthodontic bonding materials. The materials were either uncured and dissolved in methanol or cured. The cured materials were kept in deionized water for 24 hours or 2 weeks. Samples were subsequently analyzed by ultra-performance liquid chromatography coupled to mass spectrometry (UPLC-MS-MS). The composite filling material Tetric EvoFlow<sup>®</sup> and the fissure sealant DELTON<sup>®</sup> showed significantly higher levels of BPA leaching compared to control samples for all test conditions (uncured, 24 h leaching and 2 weeks leaching). There were no significant differences in amount of leached BPA for any of the tested materials after 24 hours compared to 2 weeks. These results show that BPA is still released from some dental materials despite the general concern about potential adverse effects of BPA. However, the amounts of BPA were relatively low and most likely represent a very small contribution to the total BPA exposure.</p>","PeriodicalId":6997,"journal":{"name":"Acta Biomaterialia Odontologica Scandinavica","volume":"4 1","pages":"56-62"},"PeriodicalIF":0.0,"publicationDate":"2018-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23337931.2018.1476869","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36193560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 30
An overview of development and status of fiber-reinforced composites as dental and medical biomaterials. 概述作为牙科和医用生物材料的纤维增强复合材料的发展和现状。
Acta Biomaterialia Odontologica Scandinavica Pub Date : 2018-04-12 eCollection Date: 2018-01-01 DOI: 10.1080/23337931.2018.1457445
Pekka K Vallittu
{"title":"An overview of development and status of fiber-reinforced composites as dental and medical biomaterials.","authors":"Pekka K Vallittu","doi":"10.1080/23337931.2018.1457445","DOIUrl":"10.1080/23337931.2018.1457445","url":null,"abstract":"<p><p>Fibr-reinforced composites (FRC) have been used successfully for decades in many fields of science and engineering applications. Benefits of FRCs relate to physical properties of FRCs and versatile production methods, which can be utilized. Conventional hand lamination of prefabricated FRC prepregs is utilized still most commonly in fabrication of dental FRC devices but CAD-CAM systems are to be come for use in certain production steps of dental constructions and medical FRC implants. Although metals, ceramics and particulate filler resin composites have successfully been used as dental and medical biomaterials for decades, devices made out of these materials do not meet all clinical requirements. Only little attention has been paid to FRCs as dental materials and majority of the research in dental field has been focusing on particulate filler resin composites and in medical biomaterial research to biodegradable polymers. This is paradoxical because FRCs can potentially resolve many of the problems related to traditional isotropic dental and medical materials. This overview reviews the rationale and status of using biostable glass FRC in applications from restorative and prosthetic dentistry to cranial surgery. The overview highlights also the critical material based factors and clinical requirement for the succesfull use of FRCs in dental reconstructions.</p>","PeriodicalId":6997,"journal":{"name":"Acta Biomaterialia Odontologica Scandinavica","volume":"4 1","pages":"44-55"},"PeriodicalIF":0.0,"publicationDate":"2018-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/7e/93/iabo-4-1457445.PMC5917305.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36054507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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