Biomaterial investigations in dentistry最新文献_第2页

The effect of orthodontic bracket base shape on shear bond strength to human enamel, an in vitro study 正畸托槽基底形状对人体珐琅质剪切粘接强度的影响，体外研究

Biomaterial investigations in dentistry Pub Date : 2024-05-07 DOI: 10.2340/biid.v11.40585

Ziana Esmail, William Wiltshire, Fabio H. S. L. Pinheiro, C. M. Frota, Rodrigo França

{"title":"The effect of orthodontic bracket base shape on shear bond strength to human enamel, an in vitro study","authors":"Ziana Esmail, William Wiltshire, Fabio H. S. L. Pinheiro, C. M. Frota, Rodrigo França","doi":"10.2340/biid.v11.40585","DOIUrl":"https://doi.org/10.2340/biid.v11.40585","url":null,"abstract":"The purpose of this study was to evaluate the in vitro effect of orthodontic bracket base shape on shear bond strength (SBS) to human enamel and assess the nature of debonding fractures using the Adhesive Remnant Index (ARI). Orthodontic brackets with different-shaped bases (flower, heart, rectangle) were bonded to 120 extracted human third molars. Shear bond strength was measured using a Servohydraulic Test System at 24 h and 2 months after bonding. Adhesive Remnant Index scores were evaluated under 10x magnification to assess the amount of resin left on the tooth. The control bracket (rectangular base shape) had the highest mean SBS (26.8 ± 8.2 megapascals [MPa]), and significantly differed from the flower (17.2 ± 4.4 MPa) and heart (18.9 ± 3.5 MPa) base shapes (p < 0.001). The mean SBS between debonding times at 24 h (21.5 ± 7.4 MPa) and 2 months (20.4 ± 6.7 MPa) were not statistically significant (p > 0.05). Analysis of ARI scores showed a significant difference between flower-24 h versus heart-2 months (p = 0.039), flower-24 h versus heart-24 h (p = 0.004), and control-2 months versus heart-24 h (p = 0.015). Bracket base shape influenced SBS, with the rectangular base shape having a higher mean SBS compared to flower and heart base shapes. Variations in ARI scores occurred based on bracket shape and were of a mixed adhesive-cohesive nature. All bracket shapes had bond strengths above the clinically acceptable range of 6–8 MPa, and may thus provide adequate SBS in a clinical situation. ","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":"7 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141003929","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}

引用次数: 0

Effect of different beverages and polishing techniques on colour stability of CAD/CAM composite restorative materials. 不同饮料和抛光技术对 CAD/CAM 复合修复材料颜色稳定性的影响。

Biomaterial investigations in dentistry Pub Date : 2024-04-26 eCollection Date: 2024-01-01 DOI: 10.2340/biid.v11.40591

Lippo Lassila, Mine B Uctasli, Kanae Wada, Pekka K Vallittu, Sufyan Garoushi

{"title":"Effect of different beverages and polishing techniques on colour stability of CAD/CAM composite restorative materials.","authors":"Lippo Lassila, Mine B Uctasli, Kanae Wada, Pekka K Vallittu, Sufyan Garoushi","doi":"10.2340/biid.v11.40591","DOIUrl":"10.2340/biid.v11.40591","url":null,"abstract":"Objectives: The aim of this article was to compare the colour stability of short fibre-reinforced computer-assisted design/computer-assisted manufacturing (CAD/CAM) composite (SFRC CAD) to commercially available CAD/CAM materials following prolonged immersion in a variety of beverages. Furthermore, the influence of the polishing technique was evaluated.Materials and methods: A total of 120 rectangular specimens (10 mm length × 14 mm width × 2 mm thickness) were prepared from SFRC CAD, IPS e-max, Cerasmart 270, Celtra Duo, Enamic, and Brilliant Crios. The specimens underwent polishing through either a laboratory polishing machine equipped with 4000-grit silicon carbide paper or chairside polishing using Sof-Lex spiral. Twenty specimens of each tested CAD/CAM material were randomly divided into four groups (n = 5) based on the staining solution used in order to evaluate the colour stability of the materials. Group 1: distilled water, Group 2: coffee, Group 3: red wine, Group 4: coke. Using a spectrophotometer, the colour changes (∆E) of all CAD/CAM materials were assessed at baseline, and after 1 and 12 weeks of staining. Three-way analysis of variance was used to analyse the data (α = 0.05).Results: The staining solution and material type showed a significant influence on the CAD/CAM specimens' colour stability (p < 0.05), while polishing method had no significant influence (p > 0.05). The average ∆E values for specimens submerged in wine were considerably higher (p < 0.05) than those for the other solutions. SFRC CAD, Cerasmart 270, and Enamic displayed the highest ∆E values in wine (p < 0.05).Conclusions: The colour stability of tested SFRC CAD was comparable to other composite-based CAD/CAM materials, while IPS e.max exhibited the highest level of colour stability.","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":"11 ","pages":"40591"},"PeriodicalIF":0.0,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11171852/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141319145","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 study on effects of laser activation on dye penetration in human root dentin 关于激光激活对人牙根染色渗透影响的体外研究

Biomaterial investigations in dentistry Pub Date : 2024-04-05 DOI: 10.2340/biid.v11.40311

Clara Isabel Anton y Otero, L. Marger, E. di Bella, A. Feilzer, I. Krejci, M. Abdelaziz

{"title":"An in-vitro study on effects of laser activation on dye penetration in human root dentin","authors":"Clara Isabel Anton y Otero, L. Marger, E. di Bella, A. Feilzer, I. Krejci, M. Abdelaziz","doi":"10.2340/biid.v11.40311","DOIUrl":"https://doi.org/10.2340/biid.v11.40311","url":null,"abstract":"Objective To evaluate the penetration of a dye in root dentin after activation with different laser wavelengths. Materials Palatal roots of 38 human molars were enlarged and disinfected. Irrigation activation was performed with an Er:YAG laser: @50 mJ, 15 Hz (Er:YAG); a 9.3 µm CO2 laser: @40% power (CO2); diode lasers 455 nm/970 nm: @0.8 W, 15 Hz (D455, D970) and 808/980 nm: @1 W (D808, D980) and compared to positive control: etching with 35% H3PO4 (POS); negative control: water (NEG) and conventional needle irrigation: NaOCl and ethylenediaminetetraacetic acid (EDTA) (CONV). Methylene blue solution was introduced in the canal and laser-activated or left untouched for 100 s before the roots were dried and cut into horizontal slices. Dye penetration was automatically calculated by color recognition of two samples per root third (n = 8 per group in each coronal, middle and apical root thirds). The presence and absence of a smear layer was checked in two additional samples of the negative and positive control under scanning electron microscopy (SEM). Results Full-depth infiltration was not achieved in any group. Dye penetration in CONV was significantly less than in Er:YAG, CO2, POS, D455, D970, D808 and similar to NEG and D980 when results of different root thirds were pooled. Conclusion Laser activation using certain parameters enhanced dye penetration compared to conventional needle irrigation with NaOCl and EDTA (CONV).","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":"8 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140738722","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}

引用次数: 0

The power of light – From dental materials processing to diagnostics and therapeutics 光的力量 - 从牙科材料加工到诊断和治疗

Biomaterial investigations in dentistry Pub Date : 2024-03-18 DOI: 10.2340/biid.v11.40308

Mohammed A. Hadis, A. Shortall, William M. Palin

{"title":"The power of light – From dental materials processing to diagnostics and therapeutics","authors":"Mohammed A. Hadis, A. Shortall, William M. Palin","doi":"10.2340/biid.v11.40308","DOIUrl":"https://doi.org/10.2340/biid.v11.40308","url":null,"abstract":"Harnessing the power of light and its photonic energy is a powerful tool in biomedical applications. Its use ranges from biomaterials processing and fabrication of polymers to diagnostics and therapeutics. Dental light curable materials have evolved over several decades and now offer very fast (≤ 10 s) and reliable polymerization through depth (4–6 mm thick). This has been achieved by developments on two fronts: (1) chemistries with more efficient light absorption characteristics (camphorquinone [CQ], ~30 L mol-1 cm1 [ʎmax 470 nm]; monoacylphosphine oxides [MAPO], ~800 L mol-1 cm-1 [ʎmax 385 nm]; bisacylphosphine oxide [BAPO], ~1,000 L mol-1 cm-1 [ʎmax 385 nm]) as well mechanistically efficient and prolonged radical generation processes during and after light irradiation, and; (2) introducing light curing technologies (light emitting diodes [LEDs] and less common lasers) with higher powers (≤ 2 W), better spectral range using multiple diodes (short: 390–405 nm; intermediate: 410–450 nm; and long: 450–480 nm), and better spatial power distribution (i.e. homogenous irradiance). However, adequate cure of materials falls short for several reasons, including improper selection of materials and lights, limitations in the chemistry of the materials, and limitations in delivering light through depth. Photonic energy has further applications in dentistry which include transillumination for diagnostics, and therapeutic applications that include photodynamic therapy, photobiomodulation, and photodisinfection. Light interactions with materials and biological tissues are complex and it is important to understand the advantages and limitations of these interactions for successful treatment outcomes. This article highlights the advent of photonic technologies in dentistry, its applications, the advantages and limitations, and possible future developments.","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":"54 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140232372","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}

引用次数: 0

Evaluation of cytotoxicity and antibacterial activity of different pulp capping liners 评估不同纸浆盖衬的细胞毒性和抗菌活性

Biomaterial investigations in dentistry Pub Date : 2023-12-27 DOI: 10.1080/26415275.2023.2287019

Zohre Moradi, Mahdi Abbasi, A. Bahador, Mir Saeed Yekaninejad, Xaniar Mohammadi Khanghah, Amirahmad Pahlavan Hoseini, Ladan Ranjbar Omrani

{"title":"Evaluation of cytotoxicity and antibacterial activity of different pulp capping liners","authors":"Zohre Moradi, Mahdi Abbasi, A. Bahador, Mir Saeed Yekaninejad, Xaniar Mohammadi Khanghah, Amirahmad Pahlavan Hoseini, Ladan Ranjbar Omrani","doi":"10.1080/26415275.2023.2287019","DOIUrl":"https://doi.org/10.1080/26415275.2023.2287019","url":null,"abstract":"Abstract This study compares the cytotoxicity and antibacterial activity of five pulp capping liners. This in vitro study was conducted on Fuji II LC glass ionomer, Dycal, Calcimol LC, TheraCal LC, and ACTIVA BioACTIVE. For cytotoxicity, the (MTT) methyl thiazolyl tetrazolium assay was performed on 3 samples from each group of human dental pulp cells (HDPSCs) after 24 h of incubation. The direct contact test (DCT) for antibacterial activity, 6 samples (3 for each material, and 3 for negative control), from each liner were made to evaluate Streptococcus mutans (S. mutans), Lactobacillus casei (L. casei), and Lactobacillus acidophilus (L. acidophilus). Data were analyzed by one-way ANOVA and Tukey’s post-hoc test (alpha = 0.05). Data analysis showed that the cytotoxicity of the materials was significantly different (p < 0.001). Fuji II LC and ACTIVA BioACTIVE showed strong cytotoxicity, TheraCal LC moderate cytotoxicity, and Dycal and Calcimol LC slight cytotoxicity. The analysis also revealed a significant difference among the materials regarding antibacterial activity (p < 0.001). Tukey’s test showed that the mean percentage of reduction in colony count was significant for all liners compared with the positive control (p < 0.001). The mean percentage of reduction in colony count for Dycal was significantly greater than that of Fuji II LC (p = 0.014), Calcimol LC (p = 0.003), and TheraCal LC (p = 0.001). ACTIVA BioACTIVE did not significantly differ from the other materials as regards antibacterial activity. Dycal showed significantly higher antibacterial activity than the other materials.","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":"55 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139154358","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}

引用次数: 0

Evaluation of therapeutic effects of nanofibrous mat containing mycophenolate mofetil on oral lichen planus: In vitro and clinical trial study 评估含有霉酚酸酯的纳米纤维垫对口腔扁平苔藓的治疗效果：体外和临床试验研究

Biomaterial investigations in dentistry Pub Date : 2023-12-23 DOI: 10.1080/26415275.2023.2283177

M. Alipour, Ehsan Habibivand, Shayesteh Sekhavati, Zahra Aghazadeh, Mohammadreza Ranjkesh, Soghra Ramezani, M. Aghazadeh, Marjan Ghorbani

{"title":"Evaluation of therapeutic effects of nanofibrous mat containing mycophenolate mofetil on oral lichen planus: In vitro and clinical trial study","authors":"M. Alipour, Ehsan Habibivand, Shayesteh Sekhavati, Zahra Aghazadeh, Mohammadreza Ranjkesh, Soghra Ramezani, M. Aghazadeh, Marjan Ghorbani","doi":"10.1080/26415275.2023.2283177","DOIUrl":"https://doi.org/10.1080/26415275.2023.2283177","url":null,"abstract":"Abstract Objectives Recently, topical drug delivery system has gained increasing interest in the treatment of oral lesions. Lichen planus is a chronic inflammatory disease affecting mucous membranes and skin. The current study aimed to fabricate a drug delivery system containing mycophenolate mofetil for the treatment of oral lichen planus lesions. Methods Firstly, a nanofibrous mat containing mycophenolate mofetil, zinc oxide nanoparticles, and aloe vera was designed and fabricated. The antimicrobial, cytocompatibility, anti-inflammatory, and antioxidative characteristics of fabricated scaffolds were evaluated. Then, this nanofibrous mat was applied to 12 patients suffering from bilateral erythematous/erosive Oral Lichen planus (OLP) lesions for 2 weeks. The treatment outcomes, including oral symptoms and lesion size, were compared with the routine topical treatment of these lesions; Triamcinolone ointment. Results The characterization of nanofibrous mat approved the successful fabrication of scaffolds. The fabricated nanofibers showed notable antimicrobial activity. The amounts of TNF 𝛼, IL6, and reactive oxygen species (ROS) of stimulated human gingival fibroblasts were decreased after exposure to NFs/Myco/Alv/ZnO scaffolds. The clinical trial results demonstrated the same therapeutic effects compared to the commercial ointment, while the symptoms of patients were significantly improved in the mats group. Significance. Considering the successful results of this study, the application of nanofibrous mat can be a promising product for improving treatment outcomes of OLP.","PeriodicalId":72378,"journal":{"name":"Biomaterial investigations in dentistry","volume":"195 1‐2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139161093","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}

引用次数: 0

Translating the determinant aspects on the study design in the dental implant field 牙科种植领域研究设计的决定因素转换

Biomaterial investigations in dentistry Pub Date : 2023-12-21 DOI: 10.1080/26415275.2023.2287014

M. M. Pereira, C. Dini, João Gabriel Silva Souza, V. Barão, E. D. de Avila

引用次数: 0

In vitro evaluation of three engineered multispecies endodontic biofilms on a dentinal disk substrate 体外评估牙本质盘基质上的三种工程多菌种牙髓生物膜

Biomaterial investigations in dentistry Pub Date : 2023-12-21 DOI: 10.1080/26415275.2023.2281091

Wajih Hage, D. Sarkis, Mireille Kallasy, May Mallah, C. Zogheib

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In vitro evaluation of enterococcus faecalis growth in different conditions on dentinal substrate 体外评估不同条件下粪肠球菌在牙本质基质上的生长情况

Biomaterial investigations in dentistry Pub Date : 2023-12-20 DOI: 10.1080/26415275.2023.2287668

Wajih Hage, D. Karam Sarkis, Mireille Kallassy, May Mallah, C. Zogheib

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Metal-doped silicate and phosphate glasses for antibacterial dental biomaterials 用于抗菌牙科生物材料的掺金属硅酸盐和磷酸盐玻璃

Biomaterial investigations in dentistry Pub Date : 2023-12-04 DOI: 10.1080/26415275.2023.2284372

H. Kitagawa, T. Kohno, Fan Deng, G. L. Abe, Hirohiko Sakai, Yo-Shiuan Fan, Tingyi Wu, J. Sasaki, Satoshi Imazato

引用次数: 0