Biomaterial investigations in dentistry最新文献

{"title":"Effectiveness of iodoform-based filling materials in root canal treatment of deciduous teeth: a systematic review and meta-analysis","authors":"Manoelito Ferreira Silva Junior, L. Wambier, Mayara Vitorino Gevert, A. Chibinski","doi":"10.1080/26415275.2022.2060232","DOIUrl":"https://doi.org/10.1080/26415275.2022.2060232","url":null,"abstract":"Abstract Introduction The objective was to review the effectiveness of iodoform-based compared to noniodoform-based filling materials in the root canal treatment of deciduous teeth. Methods This systematic review and meta-analysis used randomized clinical trials with six months or more follow-up. The risk of bias of individual studies and the certainty of the evidence were evaluated (Cochrane risk of bias tool and GRADE, respectively). Results The initial search resulted in 5,127 studies after removal of duplicates. After screening by title and abstract, 34 full-text studies were eligible and 21 remained in the qualitative synthesis and 19 in the meta-analysis. Iodoform-based filling materials resulted in fewer clinical failures when compared to noniodoform-based filling materials at the 6 months (OR = 0.43, 95%CI: 0.19–0.97, p = .04) and 9–12 months (OR = 0.46, 95%CI: 0.23–0.93, p = .03), but not at the 18–30 months follow-up (OR = 1.08, 95%CI: 0.58–2.03, p = .81). When considering radiographic failures, there was no statistical difference between iodoform-based and noniodoform-based filling materials at the 6 months (OR = 0.72, 95%CI: 0.39–1.32, p = .29) and 18–30 months follow-ups (OR = 1.06, 95%CI: 0.51–2.21, p = .87), but fewer radiographic failures were detected at the 9–12 months follow-up (OR = 0.49, 95%CI: 0.29–0.80, p = .005). Conclusion Iodoform-based filling materials showed better clinical and radiographic performance when compared to non-iodoform-based filling materials in the short term, and similar performance in the long term. However, most of the studies exhibited unclear or high risk of bias and the overall certainty of the evidence ranged from low to very low. Therefore, new randomized clinical trials must be accomplished to corroborate this conclusion.","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":"9 1","pages":"52 - 74"},"PeriodicalIF":0.0,"publicationDate":"2022-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42244847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Potential of «universal» bonding agents for composite repair","authors":"F. Staxrud, H. Valen","doi":"10.1080/26415275.2022.2073234","DOIUrl":"https://doi.org/10.1080/26415275.2022.2073234","url":null,"abstract":"Abstract Aim The aim of this in vitro study was to compare nine different bonding agents of so-called universal type with one well-recognized, 3-step etch-and-rinse bonding agent, as control, in a composite-to-composite shear bond strength (SBS) test. Materials and methods Cylindrical composite substrates were made according to manufacturers’ specifications and potted in epoxy according to the description in ISO TS 29022:2003. They were stored in water (37 °C) for 2 months (for water sorption). New composite was bonded to the substrates using nine different bonding agents of universal type, and one 3-step etch-and-rinse bonding agent as control. Fifteen specimens were made for each bonding agent as required by ISO 29022. SBS testing was performed as described in the standard. Vertical load was applied at the speed of 1 mm/min, using a universal testing machine. Two test series were performed: (A) Short term test of SBS after 2 weeks (B) Long term test of SBS after 1-year storage of specimens in water at 37 °C. Results Test results for the short term test (A); composite-to-composite SBS mean values ranged from 12.0 to 24.9 MPa, and for the long term test (B), SBS ranged from 11.4 to 25 MPa. Six universal bonding agents showed significantly higher bond strength than control in 1-year test. Conclusion In this in vitro study, testing shear bond strength of composite-to-composite bonding, the universal bonding agents performed similar and for some agents better than the 3-step etch-and-rinse bonding agent. New simplified bonding procedures seem reliable for repair of composite.","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":"9 1","pages":"41 - 46"},"PeriodicalIF":0.0,"publicationDate":"2022-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47106295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physical-chemical characterization and bond strength to zirconia of dental adhesives with different monomer mixtures and photoinitiator systems light-activated with poly and monowave devices","authors":"Constantino Fernandes Neto, M. Narimatsu, P. Magão, Reginaldo Mendonça da Costa, C. Pfeifer, A. Furuse","doi":"10.1080/26415275.2022.2064289","DOIUrl":"https://doi.org/10.1080/26415275.2022.2064289","url":null,"abstract":"Abstract Introduction: Bonding to crystalline zirconia is currently a challenge. Properly cured adhesives are crucial to optimize this bond, and that in turn is influenced by the initial mobility of the system, as well as by the reactivity of the initiators. Aim: This study aimed to characterize adhesives containing monomer mixtures of different viscosities and double and triple photoinitiator systems; and to evaluate the bonding to Y-TZP zirconia, when adhesives were light-activated with monowave or polywave light-curing units (LCU). Materials and methods: Adhesives were formulated at a 1:1 weight proportion of Bis-GMA/TEGDMA or Bis-GMA/Bis-EMA. To these mixtures 0.5 wt% of CQ, 0.5–1.0 wt% of DABE, 0.5–1.0 wt% of DPIHP, or 0.5–1.0 wt% of TAS-Sb were added and used as photoinitiator systems. A total of ten adhesives were prepared. Resin composite cylinders were cemented on zirconia slices and 6000 thermal cycles were performed. Degree of conversion (DC), sorption (SO) and solubility (SL) after 7 days of water storage, and microshear bond strength (µSBS) were evaluated. Data were analyzed with three-way ANOVA and Tukey’s HSD (α = 0.05). Results: Bis-GMA/Bis-EMA combined with either CQ/DABE or CQ/DABE/TAS-Sb presented the highest DC, and no significant differences were observed for LCUs (p = .298). CQ/DABE < CQ/DABE/TAS-Sb ≈ CQ/DABE/DPIHP and the polywave LCU showed smaller overall SO (p < .05). Bis-GMA/TEGDMA with CQ/DABE cured with the polywave LCU presented the lowest SO. SL varied as follows: CQ/DABE/TAS-Sb < CQ/DABE/DPIHP < CQ/DABE (p < .001). For µSBS, only the factor photoinitiator system was significant (p = .045). All mean values were above 30 MPa, with higher values being observed for BIS-GMA/TEGDMA and CQ/DABE. Conclusion: It can be concluded that the adhesive containing CQ/DABE/TAS-Sb as coinitiator of Bis-GMA/Bis-EMA mixtures produced a material with higher DC and lower SL, while bond strength values were similar to the ones obtained by CQ/DABE.","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":"9 1","pages":"20 - 32"},"PeriodicalIF":0.0,"publicationDate":"2022-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47926376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shear bond strength of resin bonded zirconia and lithium disilicate - effect of surface treatment of ceramics and dentin.","authors":"Mina Aker Sagen,&nbsp;Linda Vos,&nbsp;Jon E Dahl,&nbsp;Hans J Rønold","doi":"10.1080/26415275.2022.2038177","DOIUrl":"https://doi.org/10.1080/26415275.2022.2038177","url":null,"abstract":"<p><p><b>Objectives:</b>The purpose of the study was to investigate the effect of ceramic surface pretreatment, effect of resin cement and dentin surface roughness on shear bond strength. <b>Methodology:</b> Zirconia rods (<i>n</i> = 140) were randomly assigned to air born particle abrasion with aluminum oxide (Al₂O₃) or hot etching with potassium hydrogen difluoride (KHF₂). Lithium disilicate rods (LDS; <i>n</i> = 50) etched with hydrofluoric acid served as reference material. In Part 1 of the study, ceramic rods were cemented to bovine dentin using 5 dual-polymerizing resin cements (Variolink Esthetic, Multilink Automix (Ivoclar Vivadent), Duo-Link (BISCO Dental), Panavia F2.0 (Kuraray Dental), RelyX Unicem (3 M)). Shear bond strength was tested and fracture morphology determined. In Part 2 of the study, test groups with the highest frequency of adhesive fractures between cement and dentin were selected for further bond strength testing with different surface roughness of dentin; ground with P1200 or P80 silicon carbide paper. Dentin samples were fractured vertically to the cemented surface and the adherence between cement and dentin was studied. <b>Results:</b> The results of Part 1 showed that hot etching of zirconia significantly improved bond strength to Duo-Link cement. In Part 2, RelyX Unicem showed significantly higher bond strength to P1200 compared to P80 ground dentin. For Variolink Esthetic, bond strengths to P1200 and P80 ground dentin were similar. Adhesive fracture between cement and dentin dominated. <b>Conclusions:</b> A smooth dentin surface (P1200) improved bond strength to RelyX Unicem. Surface roughness was not important for Variolink Esthetic.</p>","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":" ","pages":"10-19"},"PeriodicalIF":0.0,"publicationDate":"2022-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8856076/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39940718","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}

{"title":"A comparative evaluation of microleakage and dentin shear bond strength of three restorative materials.","authors":"Alpana Kumari,&nbsp;Namita Singh","doi":"10.1080/26415275.2022.2033623","DOIUrl":"https://doi.org/10.1080/26415275.2022.2033623","url":null,"abstract":"<p><strong>Aim: </strong>To evaluate the microleakage and dentin shear bond strength of two glass containing restorative materials, Zirconomer and Cention N, and to compare them with a conventional glass ionomer cement (GIC) (GC Fuji II).</p><p><strong>Materials and methods: </strong>Zirconomer (Shofu) and GC Fuji II (GC Corp.) are self-curing GICs whereas Cention N (IvoclarVivadent) also offers a self-curing option as well as the option of light-curing using an adhesive. For evaluating microleakage, standardized class V cavities were prepared on the buccal surface of 30 premolars. The cavities were restored with one of the three restorative materials (<i>n</i> = 10) according to manufacturers' instructions, Cention N being used with an adhesive (Te-EconomBond, IvoclarVivadent) and in the light-curing mode. After restoration and thermocycling, the microleakage assessment was made under a stereomicroscope at 40x magnification following immersing of the teeth in 0.5% methylene blue dye and buccolingual sectioning. For evaluating dentin shear bond strength, the occlusal surface of the 30 premolars was ground flat, and cylinders of the three restorative materials (<i>n</i> = 10) were bonded to the occlusal surface according to manufacturers' instructions, Cention N being used with an adhesive (Te-EconomBond, IvoclarVivadent) and in the light-curing mode. Following 24-h storage at 100% humidity, the dentin shear bond strength was measured and the fracture mode was determined under a stereomicroscope at 10× magnification. Data were statistically analyzed using Mann-Whitney and Scheffé tests (<i>p</i> = .05).</p><p><strong>Results: </strong>Cention N displayed significantly less microleakage than did Zirconomer and GC Fuji II at occlusal as well as the gingival margins. Dentin shear bond strength varied significantly between 5.15 and 9.89 MPa with Cention N showing the highest bond strength and GC Fuji II the lowest.</p><p><strong>Conclusion: </strong>In this <i>in vitro</i> evaluation, Cention N consistently performed better than the conventional GIC (GC Fuji II) as well as Zirconomer.</p>","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":" ","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2022-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8843194/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39638547","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}

{"title":"Editorial Announcement.","authors":"Anne Peutzfeldt,&nbsp;Jon Dahl","doi":"10.1080/26415275.2022.2152939","DOIUrl":"https://doi.org/10.1080/26415275.2022.2152939","url":null,"abstract":"","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":"9 1","pages":"110"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9788678/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10437488","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}

{"title":"Effect of interfacial surface treatment on bond strength of particulate-filled composite to short fiber-reinforced composite.","authors":"L Lassila,&nbsp;J Tuokko,&nbsp;A Suni,&nbsp;S Garoushi,&nbsp;P K Vallittu","doi":"10.1080/26415275.2022.2070489","DOIUrl":"https://doi.org/10.1080/26415275.2022.2070489","url":null,"abstract":"<p><strong>Objective: </strong>The aim was to investigate the effect of different interfacial surface treatments on the shear bond strength (SBS) between a short fiber-reinforced flowable composite (SFRC) and a particulate-filled flowable composite (PFC). In addition, SBS between two successive layers of similar materials was evaluated.</p><p><strong>Materials and methods: </strong>One-hundred and forty-four specimens were prepared having either SFRC (everX Flow) as a substructure composite and PFC (G-aenial Flo X) as a surface composite or having one of the two materials as both substructure and surface layer. Eight groups of specimens were created (<i>n</i> = 18/per group) according to the interfacial surface protocol used. Group 1: no treatment; Group 2: ethanol one wipe; Group 3: ethanol three wipes; Group 4: phosphoric acid etching + bonding agent; Group 5: hydrofluoric acid etching + bonding agent; and Group 6: grinding + phosphoric acid etching. Group 7: only PFC layers and Group 8 (control) only SFRC layers without any surface treatment. After one-day storage (37 °C), SBS between surface and substructure composite layers was measured in a universal testing machine, and failure modes were visually analyzed. SEM was used to examine the bonding surface of the SFRC composite after surface treatment. SBS values were statistically analyzed with a one-way analysis of variance (ANOVA) followed by the Tukey HSD test (α = .05).</p><p><strong>Results: </strong>The SBS between successive SFRC layers (Group 8) was statistically (<i>p</i> < .05) the highest (43.7 MPa) among tested groups. Surface roughening by grinding followed by phosphoric acid etching (Group 6) resulted in a higher SBS (28.8 MPa) than the remaining surface treatments.</p><p><strong>Conclusion: </strong>Flowable composite with glass fibers (everX Flow) showed higher interlayer SBS compared to PFC flowable composite. Interfacial surface roughness increases the bonding of PFC to the substructure of SFRC.</p>","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":"9 1","pages":"33-40"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9090340/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10446215","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}

{"title":"Antimicrobial effectiveness of root canal sealers against <i>Enterococcus faecalis</i>.","authors":"Paola Castillo-Villagomez,&nbsp;Elizabeth Madla-Cruz,&nbsp;Fanny Lopez-Martinez,&nbsp;Idalia Rodriguez-Delgado,&nbsp;Jorge Jaime Flores-Treviño,&nbsp;Guadalupe Ismael Malagon-Santiago,&nbsp;Myriam Angelica de La Garza-Ramos","doi":"10.1080/26415275.2022.2071719","DOIUrl":"https://doi.org/10.1080/26415275.2022.2071719","url":null,"abstract":"<p><p>We evaluated four root canal sealers to determine their antimicrobial effectiveness against <i>E. faecalis</i>. The direct contact test was used to measure the effectiveness of the study materials and close contact between bacteria on the kinetics of bacterial growth. The agar diffusion test (ADT) was also performed for comparison. Using one-way ANOVA and the F-test, significant differences between the sealers were confirmed. Whereas BioRoot endodontic sealer had an antimicrobial effect statistically similar to the zinc oxide-eugenol control (<i>p</i>=.99), EndoSequence sealer and AH Plus sealer both had a significantly lower antimicrobial effect than the control (<i>p</i>=.0000266 and <i>p</i>=.0000068, respectively).</p>","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":"9 1","pages":"47-51"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9103261/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10250676","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}

{"title":"Editorial.","authors":"Anne Peutzfeldt,&nbsp;Jon E Dahl","doi":"10.1080/26415275.2021.2010366","DOIUrl":"https://doi.org/10.1080/26415275.2021.2010366","url":null,"abstract":"","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":" ","pages":"180"},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8667950/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39591612","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}

{"title":"Comparative evaluation of Rheological characteristics of Giomers and other Nano-flowable resin composites <i>in vitro</i>.","authors":"Loulwa M Al-Saud","doi":"10.1080/26415275.2021.1996239","DOIUrl":"https://doi.org/10.1080/26415275.2021.1996239","url":null,"abstract":"<p><strong>Objective: </strong>The purpose of this research was to determine the viscoelastic properties of a group of commercially available nano-flowable resin composites; and to explore the relation between these properties and the materials' composition (with/without fluoride), filler size description (nano-filled, nanohybrid and submicron-filled) and filler loading (by volume).</p><p><strong>Methods: </strong>Rheological measurements were performed using a rheometer. A Dynamic frequency sweep test was conducted to evaluate the complex viscosity, storage and loss moduli, loss tangent, and complex shear modulus at an angular frequency (<i>ω</i>) of 0.1-100 rad/s. Comparative evaluations of the nano flowable resin composites on rheological properties was performed, and statistically analyzed using one-way ANOVA.</p><p><strong>Results: </strong>The results indicated that all the tested materials exhibited shear-thinning flow behaviour. As the shear rate increased, the complex viscosity of the nano-flowable composites decreased. The nanohybrid filled flowable resin composites exhibited the highest complex viscosity, while the nano-filled flowable resin composites exhibited the lowest value. The submicron-filled materials exhibited the lowest complex shear moduli and loss tangent values. <b>Conclusions:</b> The findings from the current study provided comprehensive evaluation of the rheological properties of different nano-flowable composites. The observed differences in rheological properties among the tested materials were independent of their fluoride content or filler size. Furthermore, no relationship was found between the complex viscosity of the tested nano-flowable resin composites and their filler volume.</p>","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":" ","pages":"170-179"},"PeriodicalIF":0.0,"publicationDate":"2021-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8583922/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39624973","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}