Biomaterial investigations in dentistry最新文献

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Analysis of laboratory adhesion studies in eroded enamel and dentin: a scoping review. 侵蚀牙釉质和牙本质的实验室粘附研究分析:范围综述。
Biomaterial investigations in dentistry Pub Date : 2021-02-15 DOI: 10.1080/26415275.2021.1884558
Madalena Belmar da Costa, António H S Delgado, Teresa Pinheiro de Melo, Tomás Amorim, Ana Mano Azul
{"title":"Analysis of laboratory adhesion studies in eroded enamel and dentin: a scoping review.","authors":"Madalena Belmar da Costa, António H S Delgado, Teresa Pinheiro de Melo, Tomás Amorim, Ana Mano Azul","doi":"10.1080/26415275.2021.1884558","DOIUrl":"10.1080/26415275.2021.1884558","url":null,"abstract":"<p><strong>Aim: </strong>To summarize and report laboratory studies of adhesion in eroded substrates, which used bond strength as an outcome measure. To determine the strategies available to overcome bonding difficulties, the quality and consistency of the methodology and to find evidence gaps.</p><p><strong>Materials and methods: </strong>The present review followed PRISMA-ScR guidelines. A search was conducted on PubMed/Medline, Scopus and EMBASE (Ovid) databases to identify published peer-reviewed papers (2010-2020). For final qualitative synthesis, 29 articles were selected which respected the inclusion criteria. Data charting was carried out, independently, by two reviewers and quality assessment of the articles was performed.</p><p><strong>Results: </strong>The primary studies included fall into four major categories: comparison of restorative materials and application modes, enzymatic inhibitors, surface pretreatments or remineralization strategies. Most studies found evaluated dentin (76%), while 17% evaluated enamel, and 7% evaluated both substrates. The majority of the studies reported an effective intervention (83%). Bond strength to eroded dentin is significantly reduced, while in enamel erosion is beneficial. The bond strength to eroded dentin is material-dependent and favored in systems containing 10-MDP. Great disparities among the erosion models used were found, with citric acid in different concentrations being the preferred method, although standardization is lacking.</p><p><strong>Conclusions: </strong>Adhesives containing 10-MDP show beneficial results in eroded dentin, and surface preparation methods should be considered. Studies which evaluated adhesion to eroded enamel/dentin show high heterogeneity in what concerns aims and methodology. Strategies that focus on remineralizing dentin and strategies to protect bond longevity in this substrate require further research.</p>","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":" ","pages":"24-38"},"PeriodicalIF":0.0,"publicationDate":"2021-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7889235/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25403292","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
Effect of fluoride varnish on glass ionomer microhardness changes in endogenous acid erosion challenge. 内源酸侵蚀条件下氟清漆对玻璃离子单体显微硬度变化的影响。
Biomaterial investigations in dentistry Pub Date : 2021-02-10 DOI: 10.1080/26415275.2021.1880907
Fatemeh Moharramkhani, Ladan Ranjbar Omrani, Mahdi Abbasi, Mohammad Javad Kharrazifard, Elham Ahmadi
{"title":"Effect of fluoride varnish on glass ionomer microhardness changes in endogenous acid erosion challenge.","authors":"Fatemeh Moharramkhani,&nbsp;Ladan Ranjbar Omrani,&nbsp;Mahdi Abbasi,&nbsp;Mohammad Javad Kharrazifard,&nbsp;Elham Ahmadi","doi":"10.1080/26415275.2021.1880907","DOIUrl":"https://doi.org/10.1080/26415275.2021.1880907","url":null,"abstract":"<p><strong>Objective: </strong>This study aimed to assess the effect of fluoride varnish on glass ionomer microhardness changes after endogenous acid erosion challenge.</p><p><strong>Methodology: </strong>In this study, 40 conventional glass ionomer (CGI; Fuji IX) and 40 resin-modified glass ionomer (RMGI; Fuji IILC) discs were fabricated and divided into 4 subgroups (<i>n</i> = 10) for immersion in synthetic gastric acid or saliva for 27 h with/without fluoride varnish application. The surface microhardness was measured at baseline and after immersion, and the change in microhardness was calculated. Data were analyzed using analysis of variance and T-test.</p><p><strong>Results: </strong>A reduction in microhardness was noted in all subgroups following immersion. The lowest change in microhardness of both CGI and RMGI occurred in artificial saliva. In CGI groups, the highest reduction in microhardness occurred in synthetic gastric acid with fluoride varnish application, and the reduction was significantly different from that of the CGI group with fluoride varnish application (<i>p</i> value = .01). In RMGI groups, the highest reduction in microhardness was noted in synthetic gastric acid without fluoride varnish application, and the reduction was significantly different from that of the other groups (<i>p</i> value < .05).</p><p><strong>Conclusions: </strong>Exposure to synthetic gastric acid caused a significant reduction in microhardness of RMGI. Varnish application significantly decreased the acid susceptibility of RMGI, but not that of CGI.</p>","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":"8 1","pages":"18-23"},"PeriodicalIF":0.0,"publicationDate":"2021-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/26415275.2021.1880907","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10292691","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
Influence of resin cement on color stability of ceramic veneers: in vitro study. 树脂水泥对陶瓷贴面颜色稳定性影响的体外研究。
Biomaterial investigations in dentistry Pub Date : 2021-01-28 DOI: 10.1080/26415275.2020.1855077
Maryam Hoorizad, Sara Valizadeh, Haleh Heshmat, Seyedeh Farnaz Tabatabaei, Tahereh Shakeri
{"title":"Influence of resin cement on color stability of ceramic veneers: <i>in vitro</i> study.","authors":"Maryam Hoorizad,&nbsp;Sara Valizadeh,&nbsp;Haleh Heshmat,&nbsp;Seyedeh Farnaz Tabatabaei,&nbsp;Tahereh Shakeri","doi":"10.1080/26415275.2020.1855077","DOIUrl":"https://doi.org/10.1080/26415275.2020.1855077","url":null,"abstract":"<p><strong>Statement of the problem: </strong>Long-term success of ceramic veneers depends on the color stability of resin cement used for their cementation. Color change of cement may be seen through the ceramic and compromise esthetics.</p><p><strong>Purpose: </strong>This study aimed to compare the color change of two resin cements and their visibility through the ceramic veneers after accelerated artificial aging.</p><p><strong>Materials and methods: </strong>In this <i>in vitro</i> study, color change (ΔE) was measured in the following groups (<i>n</i> = 10) before and after accelerated artificial aging: group 1, IPS e.max press high translucent ceramic discs; groups 2, Variolink NLC resin cement discs; group 3, Choice 2 resin cement discs; groups 4, Variolink NLC discs bonded to e.max ceramic discs; group 5, Choice 2 disc bonded to e.max ceramic discs. Color change was measured using a spectrophotometer according to International Commission on Illumination Lab (CIELab). Data were analyzed using one-way ANOVA and Tukey's post-hoc test.</p><p><strong>Results: </strong>Group 2 showed the highest (Δ<i>E</i> = 10.4 ± 0.9) and group 1 the lowest (Δ<i>E</i> = 0.9 ± 0.4) color change. The color change of Variolink was significantly greater than Choice 2 either alone (<i>p</i> < .001) or through the ceramic discs (<i>p</i> < .004). The color change of both cements was lower through the ceramic veneer and this reduction was statistically significant (<i>p</i> < .001).</p><p><strong>Conclusion: </strong>Noticeable color change may be expected in areas of cement exposure for both cements studied. Also, in case of using Variolink cement, the color change may be seen through the ceramic veneers.</p>","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":" ","pages":"11-17"},"PeriodicalIF":0.0,"publicationDate":"2021-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/26415275.2020.1855077","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25342985","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
Can maxilla and mandible bone quality explain differences in orthodontic mini-implant failures? 上颌骨和下颌骨的骨质量能否解释微型种植体失败的差异?
Biomaterial investigations in dentistry Pub Date : 2021-01-08 DOI: 10.1080/26415275.2020.1863155
Omar Melendres Ugarte, Ivan Onone Gialain, Naor Maldonado de Carvalho, Gisele Lie Fukuoka, Rafael Yague Ballester, Paolo Maria Cattaneo, Marina Guimarães Roscoe, Josete Barbosa Cruz Meira
{"title":"Can maxilla and mandible bone quality explain differences in orthodontic mini-implant failures?","authors":"Omar Melendres Ugarte,&nbsp;Ivan Onone Gialain,&nbsp;Naor Maldonado de Carvalho,&nbsp;Gisele Lie Fukuoka,&nbsp;Rafael Yague Ballester,&nbsp;Paolo Maria Cattaneo,&nbsp;Marina Guimarães Roscoe,&nbsp;Josete Barbosa Cruz Meira","doi":"10.1080/26415275.2020.1863155","DOIUrl":"https://doi.org/10.1080/26415275.2020.1863155","url":null,"abstract":"<p><p><b>Purpose:</b> This study aimed to compare the risk of orthodontic mini-implant (OMI) failure between maxilla and mandible. A critical analysis of finite-element studies was used to explain the contradiction of the greatest clinical success for OMIs placed in the maxilla, despite the higher quality bone of mandible. <b>Materials and Methods:</b> Four tridimensional FE models were built, simulating an OMI inserted in a low-dense maxilla, control maxilla, control mandible, and high-dense mandible. A horizontal force was applied to simulate an anterior retraction of 2 N (clinical scenario) and 10 N (overloading condition). The intra-bone OMI displacement and the major principal bone strains were used to evaluate the risk of failure due to insufficient primary stability or peri-implant bone resorption. <b>Results:</b> The OMI displacement was far below the 50-100 µm threshold, suggesting that the primary stability would be sufficient in all models. However, the maxilla was more prone to lose its stability due to overload conditions, especially in the low-dense condition, in which major principal bone strains surpassed the pathologic bone resorption threshold of 3000 µstrain. <b>Conclusions:</b> The differences in orthodontic mini-implant failures cannot be explained by maxilla and mandible bone quality in finite-element analysis that does not incorporate the residual stress due to OMI insertion.</p>","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":" ","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2021-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/26415275.2020.1863155","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25316978","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
The effects of mineral trioxide aggregate on osteo/odontogenic potential of mesenchymal stem cells: a comprehensive and systematic literature review. 三氧化二矿聚合体对间充质干细胞成骨/成牙潜能的影响:全面系统的文献综述。
Biomaterial investigations in dentistry Pub Date : 2020-12-02 DOI: 10.1080/26415275.2020.1848432
Danial Babaki, Sanam Yaghoubi, Maryam M Matin
{"title":"The effects of mineral trioxide aggregate on osteo/odontogenic potential of mesenchymal stem cells: a comprehensive and systematic literature review.","authors":"Danial Babaki, Sanam Yaghoubi, Maryam M Matin","doi":"10.1080/26415275.2020.1848432","DOIUrl":"10.1080/26415275.2020.1848432","url":null,"abstract":"<p><p>The significance of dental materials in dentin-pulp complex tissue engineering is undeniable. The mechanical properties and bioactivity of mineral trioxide aggregate (MTA) make it a promising biomaterial for future stem cell-based endodontic therapies. There are numerous <i>in vitro</i> studies suggesting the low cytotoxicity of MTA towards various types of cells. Moreover, it has been shown that MTA can enhance mesenchymal stem cells' (MSCs) osteo/odontogenic ability. According to the preferred reporting items for systematic reviews and meta-analyses (PRISMA), a literature review was conducted in the Medline, PubMed, and Scopus databases. Among the identified records, the cytotoxicity and osteo/odontoblastic potential of MTA or its extract on stem cells were investigated. Previous studies have discovered the differentiation-inducing potential of MTA on MSCs, providing a background for dentin-pulp complex cell therapies using the MTA, however, animal trials are needed before moving into clinical trials. In conclusion, MTA can be a promising candidate dental biomaterial for futuristic stem cell-based endodontic therapies.</p>","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":"7 1","pages":"175-185"},"PeriodicalIF":0.0,"publicationDate":"2020-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7717865/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38706114","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
In vitro abrasivity and chemical properties of charcoal-containing dentifrices. 含炭牙垢的体外磨耗性和化学性质。
Biomaterial investigations in dentistry Pub Date : 2020-11-03 DOI: 10.1080/26415275.2020.1838284
Foteini Machla, Aida Mulic, Ellen Bruzell, Håkon Valen, Ida Sofia Refsholt Stenhagen
{"title":"<i>In vitro</i> abrasivity and chemical properties of charcoal-containing dentifrices.","authors":"Foteini Machla,&nbsp;Aida Mulic,&nbsp;Ellen Bruzell,&nbsp;Håkon Valen,&nbsp;Ida Sofia Refsholt Stenhagen","doi":"10.1080/26415275.2020.1838284","DOIUrl":"https://doi.org/10.1080/26415275.2020.1838284","url":null,"abstract":"<p><strong>Objective: </strong>Charcoal-containing dentifrices are gaining popularity, but scientific information on their effect on oral health is scarce. This study investigated properties of dentifrices that may affect dentine abrasivity, as well as their ability to adsorb fluoride, their pH and the presence of harmful substances.</p><p><strong>Materials and methods: </strong>The dentifrices NAO and COCO were subjected to the following analyses: abrasivity, expressed as mean abraded depth and relative dentin abrasivity (RDA), and surface roughness of extracted human molars (<i>n</i> = 30) after simulated brushing; fluoride adsorption measured as concentration change; pH measurements; detection of polycyclic aromatic hydrocarbons by gas chromatography-mass spectrometry. The products were compared to a reference dentifrice (Colgate<sup>®</sup> MaxWhite), positive controls (ISO dentifrice slurry, activated charcoal for laboratory use) and a negative control (distilled water).</p><p><strong>Results: </strong>The mean abraded depths of NAO and COCO were not different (<i>p</i> > .05), but higher than the reference dentifrice and the negative control (<i>p</i> < .05). The RDA values of NAO, COCO and the ISO dentifrice slurry were higher than the reference dentifrice value (<i>p</i> < .05) by up to 10 times. The dentine surface roughness was higher after brushing with NAO, COCO and ISO dentifrice slurry compared to distilled water (<i>p</i> < .05). No change in mean adsorbed fluoride concentration was observed after 24 h (<i>p</i> > .05). Both NAO and COCO were alkaline (pH > 7). Analysis of NAO revealed the presence of naphthalene (112.8 ± 2.0 ng/mL).</p><p><strong>Conclusion: </strong>The charcoal-containing dentifrices were abrasive within acceptable limits set by ISO and did not adsorb fluoride. The presence of naphthalene in one product is a cause for concern.</p>","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":"7 1","pages":"167-174"},"PeriodicalIF":0.0,"publicationDate":"2020-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/26415275.2020.1838284","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38736900","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
Core build-up resin composites: an in-vitro comparative study. 堆芯树脂复合材料:体外比较研究。
Biomaterial investigations in dentistry Pub Date : 2020-11-03 DOI: 10.1080/26415275.2020.1838283
L Spinhayer, A T B Bui, J G Leprince, C M F Hardy
{"title":"Core build-up resin composites: an in-vitro comparative study.","authors":"L Spinhayer,&nbsp;A T B Bui,&nbsp;J G Leprince,&nbsp;C M F Hardy","doi":"10.1080/26415275.2020.1838283","DOIUrl":"https://doi.org/10.1080/26415275.2020.1838283","url":null,"abstract":"<p><strong>Aim: </strong>Resin composite (RC) are commonly used under full crowns. However, independent information is lacking to guide practitioners regarding core RC material selection. This study aimed at comparing the flexural properties of a large selection of commercially-available core build-up RCs (CBU-RC), either light-, self- or dual-cure, to conventional light-cure RCs.</p><p><strong>Methods: </strong>RCs were injected into a 25 × 2×2mm Teflon mold, and either light-cured during 20 s (materials with claimed light-cure characteristics) or covered by aluminum during 10 min (dual- and self-cure CBU-RCs). They were subjected after a one-week water storage at 37.5 °C to three-point bending, and Flexural modulus (<i>E</i> <sub>flex</sub>) and Flexural Strength (<i>σ</i> <sub>f</sub>) were calculated (<i>n</i> = 20). Thermogravimetric analysis (<i>n</i> = 3) was performed to determine inorganic filler content (%).</p><p><strong>Results: </strong>For dual-cure CBU-RCs, both RC (<i>p</i> < .0001) and light-curing (<i>p</i> = .0007) had a significant influence on <i>E</i> <sub>flex</sub>, while only RC was significant for <i>σ</i> <sub>f</sub> (<i>p</i> < .0001). Between all conventional RCs and CBU-RCs, significant differences were observed (<i>p</i> < .0001), both regarding <i>E</i> <sub>flex</sub> and <i>σ</i> <sub>f</sub>, with values ranging from 3.9 to 15.5 GPa and from 76 to 130.3 MPa, respectively. Higher <i>E</i> <sub>flex</sub> values were observed for light-cure RCs than for self- and dual-cure ones, while no clear trend was noticed regarding <i>σ</i> <sub>f</sub>. Good linear correlation was found between inorganic filler content and <i>E</i> <sub>flex</sub> (<i>R</i> <sup>2</sup>=0.85, <i>p</i> < .0001), but not with <i>σ</i> <sub>f</sub> (<i>R</i> <sup>2</sup>=0.08, <i>p</i> = .1609).</p><p><strong>Conclusion: </strong>This work demonstrated a positive influence of light-curing on dual-cure CBU-RC's <i>E</i> <sub>flex</sub>. It also highlighted large differences in flexural properties (especially <i>E</i> <sub>flex</sub>) among the investigated materials, questioning the use of some CBU-RCs as dentin replacement in case of large tissue loss.</p>","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":"7 1","pages":"159-166"},"PeriodicalIF":0.0,"publicationDate":"2020-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/26415275.2020.1838283","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38628635","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: 6
Editorial. 社论。
Biomaterial investigations in dentistry Pub Date : 2020-10-14 DOI: 10.1080/26415275.2020.1831296
Anne Peutzfeldt, Jon E Dahl
{"title":"Editorial.","authors":"Anne Peutzfeldt,&nbsp;Jon E Dahl","doi":"10.1080/26415275.2020.1831296","DOIUrl":"https://doi.org/10.1080/26415275.2020.1831296","url":null,"abstract":"","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":"7 1","pages":"158"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/26415275.2020.1831296","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38592199","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
In vitro Candida albicans biofilm formation on different titanium surface topographies. 体外白色念珠菌生物膜在不同钛表面形貌上的形成。
Biomaterial investigations in dentistry Pub Date : 2020-10-09 DOI: 10.1080/26415275.2020.1829489
Mathieu Mouhat, Robert Moorehead, Craig Murdoch
{"title":"<i>In vitro Candida albicans</i> biofilm formation on different titanium surface topographies.","authors":"Mathieu Mouhat,&nbsp;Robert Moorehead,&nbsp;Craig Murdoch","doi":"10.1080/26415275.2020.1829489","DOIUrl":"https://doi.org/10.1080/26415275.2020.1829489","url":null,"abstract":"<p><strong>Objectives: </strong>To investigate if differences in titanium implant surface topography influence <i>Candida albicans</i> biofilm formation.</p><p><strong>Materials and methods: </strong>Titanium discs were prepared and characterized using a profilometer: Group A (<i>R</i> <sub>a</sub> 0.15 µm, smooth), Group B (<i>R</i> <sub>a</sub> 0.64 µm, minimally rough) and Group C (<i>R</i> <sub>a</sub> 1.3 µm, moderately rough). Contact angle and surface free energy (SFE) were determined for each group. Non-preconditioned titanium discs were incubated with <i>C. albicans</i> for 24 h. In additional experiments, the titanium discs were initially coated with human saliva, bovine serum albumin or phosphate-buffered saline for 2 h before incubation with <i>C. albicans</i> for 24 h. The amount of fungal biofilm formation was quantified using a colorimetric assay.</p><p><strong>Results: </strong><i>C. albicans</i> biofilm formation was significantly lower (<i>p</i> < 0.05) on the minimally rough titanium surface compared to smooth and moderately rough surfaces. The titanium surface displaying the lowest SFE (Group B) was associated with significantly lower (<i>p</i> < 0.05) <i>C. albicans</i> biofilm formation than the other two groups. Salivary coating resulted in greater adherence of <i>C. albicans</i> with increased surface roughness.</p><p><strong>Conclusions: </strong>The minimally rough titanium discs displayed lowest SFE compared to smooth and moderately rough surfaces and showed the least <i>C. albicans</i> biofilm formation. This study demonstrated that <i>C. albicans</i> biofilm formation increased in a SFE-dependent manner. These findings suggest that SFE might be a more explanatory factor for <i>C. albicans</i> biofilm formation on titanium surfaces than roughness. The presence of a pellicle coating may negate the impact of SFE on <i>C. albicans</i> biofilm formation on titanium surfaces.</p>","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":"7 1","pages":"146-157"},"PeriodicalIF":0.0,"publicationDate":"2020-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/26415275.2020.1829489","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38562097","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: 3
Effect of silica nano-spheres on adhesion of oral bacteria and human fibroblasts. 二氧化硅纳米微球对口腔细菌和人类成纤维细胞粘附力的影响
Biomaterial investigations in dentistry Pub Date : 2020-09-15 DOI: 10.1080/26415275.2020.1816175
Pawel Kallas, Hua Kang, Håkon Valen, Håvard Jostein Haugen, Martin Andersson, Mats Hulander
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