Journal of Dental Materials and Techniques最新文献

Citric Acid in Endodontics: A Review 柠檬酸在牙髓学中的应用综述

Journal of Dental Materials and Techniques Pub Date : 2021-11-03 DOI: 10.22038/JDMT.2021.56002.1430

Z. Mohammadi, J. Kinoshita, S. Shalavi, A. Mokhber, H. Jafarzadeh

引用次数: 0

The Evaluation of the Effect of Coffee Staining and 16% Carbamide Peroxide Bleaching on the Color Change of Chairside CAD/CAM Ceramics 咖啡染色和16%过氧化脲漂白对椅子边CAD/CAM陶瓷颜色变化的影响

Journal of Dental Materials and Techniques Pub Date : 2021-11-01 DOI: 10.22038/JDMT.2021.55388.1422

G. Sağlam, S. Cengiz

{"title":"The Evaluation of the Effect of Coffee Staining and 16% Carbamide Peroxide Bleaching on the Color Change of Chairside CAD/CAM Ceramics","authors":"G. Sağlam, S. Cengiz","doi":"10.22038/JDMT.2021.55388.1422","DOIUrl":"https://doi.org/10.22038/JDMT.2021.55388.1422","url":null,"abstract":"Introduction: The aim of this study was to evaluate the effect of coffee staining and home bleaching agent on the color stability of stained CAD/CAM ceramics.Methods: Forty specimens were prepared from feldspathic ceramic (CEREC Blocs) and hybrid nano-ceramic (Cerasmart) CAD/CAM blocks (N=40). The polished specimens were ultrasonically cleaned in distilled water and then, immersed in coffee for seven days. The stained specimens were divided into four subgroups (n=10) according to their type of ceramic and bleaching treatment; CEREC control, CEREC bleaching, Cerasmart control and, Cerasmart bleaching. The home bleaching agent (Opalescence PF 16%) was applied to specimens of bleaching groups for seven days. Control groups did not take any bleaching procedure and were placed in distilled water during this period. Then the specimens were immersed in coffee for seven days again for staining susceptibility. CIELAB parameters were recorded at four times; initial color, 1-week coffee staining, after bleaching, and coffee staining after bleaching with a dental spectrophotometer (VITA Easyshade). Color changes between each step were calculated as ΔE values. The data were statistically analyzed with t-test and Kruskal Wallis test. Results: After 1-week coffee staining the highest ΔE values were obtained from Cerasmart (p<0.001). The bleached Cerasmart group showed significantly higher color change values compared to Cerasmart control and both CEREC groups (P<0.05). No significant differences were found between control and bleached groups in both Cerasmart and CEREC groups after coffee immersion.Conclusion: Coffee staining and 16% carbamide peroxide bleaching significantly influenced the color of resin ceramic CAD/CAM materials.","PeriodicalId":15640,"journal":{"name":"Journal of Dental Materials and Techniques","volume":"12 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84171991","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: 2

Evaluation of the Polymerization Properties of Bulk-Fill Composite Resins 本体填充复合树脂聚合性能的评价

Journal of Dental Materials and Techniques Pub Date : 2021-09-01 DOI: 10.22038/JDMT.2021.57660.1443

L. Uygun, N. Akgül

{"title":"Evaluation of the Polymerization Properties of Bulk-Fill Composite Resins","authors":"L. Uygun, N. Akgül","doi":"10.22038/JDMT.2021.57660.1443","DOIUrl":"https://doi.org/10.22038/JDMT.2021.57660.1443","url":null,"abstract":"Introduction: The aim was to evaluate the polymerization properties of bulk-fill composite resins in terms of the degree of conversion (%DC), Vickers hardness (HV). SonicFill (SF, Kerr, CA, USA), Tetric Evo Ceram Bulk-Fill (TECBF, Ivoclar Vivadent Schaan, Lichtenstein), and X-trafil (XTF, Voco GmbH, Cuxhaven, Germany) were investigated. Methods: The samples prepared from composites (n = 10) were polymerized via three different curing modes (standard mode: 20 s, high-power mode: 12 s, extra power mode: 6 s) using a polywave LED. %DC was determined by FTIR-ATR-spectroscopy. HV was measured at the top and bottom of the specimens. Data were analyzed by two way ANOVA, and Bonferroni’s post-hoc respectively (α=0.05). Results: Except TECBF (%41.10 ± 3.1) in three different curing modes, all materials showed no significant inferior %DC. In all curing modes, the highest hardness ratio was found in XTF (0.84 ± 0.03 GPa), and the lowest hardness ratio was found in the TECBF (0.78 ± 0.02GPa). In the cases where the extra power mode of the Valo Led was applied, the lowest degree of conversion and hardness were also measured. Conclusion: It has been observed that the examined properties of some tested materials change with the curing time and power of the light and however, the results are dependent on the material.Extra power mode of the Valo Led negatively affected high viscosity bulk-fill composites in terms of their polymerization properties","PeriodicalId":15640,"journal":{"name":"Journal of Dental Materials and Techniques","volume":"25 1","pages":"164-172"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77833266","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 Effect of Linear and Angular Midline Deviation on Smile Attractiveness Regarding Facial Height 线状和角状中线偏差对面部高度微笑吸引力的影响

Journal of Dental Materials and Techniques Pub Date : 2021-09-01 DOI: 10.22038/JDMT.2021.56944.1439

Behrad Tanbakuchi, Sepideh Arab, E. A. Niaki, Mohamad Moslem Imani, S. Valizadeh, A. Shamshiri

{"title":"The Effect of Linear and Angular Midline Deviation on Smile Attractiveness Regarding Facial Height","authors":"Behrad Tanbakuchi, Sepideh Arab, E. A. Niaki, Mohamad Moslem Imani, S. Valizadeh, A. Shamshiri","doi":"10.22038/JDMT.2021.56944.1439","DOIUrl":"https://doi.org/10.22038/JDMT.2021.56944.1439","url":null,"abstract":"Introduction: The aim of the present study was to evaluate ordinary people`s perception about smile attractiveness in long face and short face subjects with linear and angular midline deviations. Methods: Frontal facial smiling images of two young Iranian females (one short face and one long face) were manipulated by Adobe Photoshop CS3 software. Four photos with different linear midline deviations to right (1mm, 2mm, 3mm and 4mm) and four photos with counter clockwise angular midline deviation (2˚, 6˚, 10˚, 14˚) were produced. Sixty Iranian individuals (30 males and 30 females) were asked to determine from which photo on, they found that the smile is unattractive. Results: Unlike angular midline deviation, there was no statistically significant difference in the acceptability limitation for linear midline deviation between long face and short face subjects. The mean of unattractive limitation for angular midline deviation was 8.44˚ and 6.56˚ in long face and short face subjects, respectively. No statistically significant differences were found in ratings between male and female examiners. Conclusion: Angular midline deviation is more acceptable in long face people. On the other hand, the attractiveness of the two facial types is similarly affected by linear midline deviation","PeriodicalId":15640,"journal":{"name":"Journal of Dental Materials and Techniques","volume":"1 1","pages":"157-163"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74133823","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: 1

Comparative Evaluation of Cytotoxicity of Fluoride Varnish as Root Canal Sealer against L929 Mouse Fibroblasts with Conventional Endodontic Sealers 氟化物清漆作为根管封闭剂对L929小鼠成纤维细胞的细胞毒性与常规根管封闭剂的比较

Journal of Dental Materials and Techniques Pub Date : 2021-09-01 DOI: 10.22038/JDMT.2021.48368.1372

Erfan Hosseini, Mahdi Lomee, J. Charati, Abolfazl Hosseinnataj, Salma Omidi

{"title":"Comparative Evaluation of Cytotoxicity of Fluoride Varnish as Root Canal Sealer against L929 Mouse Fibroblasts with Conventional Endodontic Sealers","authors":"Erfan Hosseini, Mahdi Lomee, J. Charati, Abolfazl Hosseinnataj, Salma Omidi","doi":"10.22038/JDMT.2021.48368.1372","DOIUrl":"https://doi.org/10.22038/JDMT.2021.48368.1372","url":null,"abstract":"Introduction: This study aimed to assess the cytotoxicity of Duraflur fluoride varnish as root canal sealer against L929 mouse fibroblasts in comparison with four commonly used conventional endodontic sealers in the first 48 hours of exposure. Methods: In this in vitro, experimental study, L929 mouse fibroblasts were exposed to 1/1, ½, ¼ , and 1/8 concentrations of Duraflur fluoride varnish, AH Plus, Fill Canal, MTA Fillapex, and AH26 sealers. After 48 hours, the methyl thiazolyl tetrazolium (MTT) assay was performed to assess the cytotoxicity of sealers. Cell viability was determined as the percentage of viable cells compared with the control group. The results were analyzed using one-way ANOVA followed by the Tukey’s post hoc test for multiple comparisons.. Results: MTA Fillapex had the lowest and AH26 had the highest cytotoxicity (p <0.05). Fluoride varnish showed high cell viability in 1/8 concentration (91.09%). Its cytotoxicity was close to that of AH Plus with no significant difference (P=0.49) but it had higher cytotoxicity than Fill Canal and Fill Apex (p <0.05). Fluoride varnish in 1/1 and 1/8 concentrations showed significantly higher cell viability than AH26 (p <0.001). Conclusion: Fluoride varnish sealer has acceptable biocompatibility comparable to that of conventional sealers. It has lower cytotoxicity than AH26.","PeriodicalId":15640,"journal":{"name":"Journal of Dental Materials and Techniques","volume":"34 1","pages":"133-141"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89208200","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 Comparison of Styloid Processes in the Edentulous and the Posterior Dentate Patients Using Panoramic Radiography 无牙和后牙患者茎突的全景x线摄影比较

Journal of Dental Materials and Techniques Pub Date : 2021-09-01 DOI: 10.22038/JDMT.2021.54459.1409

N. Dedeoğlu, G. Eşer, O. Altun

引用次数: 0

Intentional Replantation: an Approach to Save Hopeless Natural Teeth (A Case Report) 有意再植:一种挽救无望天然牙的方法(附一例报告)

Journal of Dental Materials and Techniques Pub Date : 2021-09-01 DOI: 10.22038/JDMT.2021.48964.1373

Soheila Darmiani, S. Ebrahimipour

引用次数: 0

A Review on Root Canal Irrigation Solutions in Endodontics 根管冲洗技术在牙髓学中的研究进展

Journal of Dental Materials and Techniques Pub Date : 2021-08-14 DOI: 10.22038/JDMT.2021.56003.1431

Z. Mohammadi, S. Shalavi, J. Kinoshita, L. Giardino, J. Gutmann, S. B. Rad, C. Udoye, H. Jafarzadeh

{"title":"A Review on Root Canal Irrigation Solutions in Endodontics","authors":"Z. Mohammadi, S. Shalavi, J. Kinoshita, L. Giardino, J. Gutmann, S. B. Rad, C. Udoye, H. Jafarzadeh","doi":"10.22038/JDMT.2021.56003.1431","DOIUrl":"https://doi.org/10.22038/JDMT.2021.56003.1431","url":null,"abstract":"Introduction: This paper aims to review the different characteristics of root canal irrigants including sodium hypochlorite (NaOCl), chlorhexidine (CHX), hydrogen peroxide (H2O2), iodine potassium iodide (IKI), antibiotic-based irrigants, photo-activated disinfection, electrochemically activated water, and QMix. The literature on root canal irrigation solutions in the context of endodontics up to June 2020 was reviewed using PubMed and MEDLINE. NaOCl was identified as the most likely effective irrigation solution that could be used for endodontics. Its antimicrobial activity is at least comparable or even greater than that of other common irrigants. Tetraclean was also proposed to be more effective than CHX against endodontic microorganisms. In addition, Hypoclean was suggested as the most potent and effective irrigant against Candida albicans. Similarly, IKI was introduced as a successful irrigant in killing Candida albicans and Enterococcus faecalis. MTAD is also known to be effective in smear layer removal as well as against the growth of Enterococcus faecalis. EDTA is also considered to have limited antimicrobial activity.","PeriodicalId":15640,"journal":{"name":"Journal of Dental Materials and Techniques","volume":"25 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2021-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72746058","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: 1

Evaluation and Comparison of the Vertical Marginal Discrepancy of Ni-Cr and Co-Cr Alloys Before and After Porcelain Firing: An in Vitro Study 烤瓷前后Ni-Cr和Co-Cr合金垂直边缘差异的体外评价与比较

Journal of Dental Materials and Techniques Pub Date : 2021-07-17 DOI: 10.22038/JDMT.2021.55664.1428

R. Kulkarni, D. Jain, Aalap Prajapati, Poonam R Kulkarni

{"title":"Evaluation and Comparison of the Vertical Marginal Discrepancy of Ni-Cr and Co-Cr Alloys Before and After Porcelain Firing: An in Vitro Study","authors":"R. Kulkarni, D. Jain, Aalap Prajapati, Poonam R Kulkarni","doi":"10.22038/JDMT.2021.55664.1428","DOIUrl":"https://doi.org/10.22038/JDMT.2021.55664.1428","url":null,"abstract":"Introduction: Marginal seal is the critical factor for the success of any restoration. Accuracy of marginal seal of copings depends on alloy systems & manufacturing techniques. In every technique like laser sintered, conventional casting etcetera, significant marginal discrepancy takes place after porcelain firing. The aim of this study is to evaluate and compare the vertical marginal discrepancy of Ni-Cr and Co-Cr alloys before and after porcelain firing. Methods: Custom made stainless steel die model was prepared to simulate the dimensions of the mandibular molar with a round shoulder margin. Cast copings of two base metal alloys Ni-Cr alloy & Co-Cr alloy were prepared. Total 40 copings were made and divided into two groups, G1 (Ni-Cr alloy) & G2 (Co-Cr alloy). According to alloy type, 20 specimens were used for each group of the study. The vertical discrepancy was measured with an optical LASER microscope (Nikon, Japan) before and after application of porcelain on the copings. Wilcoxon signed ranked test and Mann Whitney U test were used for Statistical analysis. Results: The median vertical marginal discrepancy before and after porcelain firing for Ni-Cr alloy was 48.13 and 52.87 um respectively and for Co-Cr alloy was 95.33 and 100.04 um respectively. There is a highly significant difference (P < 0.001) in the median vertical marginal discrepancy between Co-Cr alloy copings & Ni-Cr alloy copings before & after porcelain firing. \u0000Conclusions: Co-Cr alloy PFM restorations have double vertical marginal discrepancy compared to Ni-Cr alloy restorations but both the values can be considered within clinical acceptability range of the marginal discrepancy.","PeriodicalId":15640,"journal":{"name":"Journal of Dental Materials and Techniques","volume":"6 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2021-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74257152","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

Bilateral Simultaneous Sinus and Nasal Floor Augmentation in Severe Atrophic Maxilla: a Case Report 双侧鼻窦及鼻底同时增强术治疗严重上颌骨萎缩1例

Journal of Dental Materials and Techniques Pub Date : 2021-07-17 DOI: 10.22038/JDMT.2021.53395.1399

M. Shokri, Rozhin Aali, Zeinab Bakhtiari

{"title":"Bilateral Simultaneous Sinus and Nasal Floor Augmentation in Severe Atrophic Maxilla: a Case Report","authors":"M. Shokri, Rozhin Aali, Zeinab Bakhtiari","doi":"10.22038/JDMT.2021.53395.1399","DOIUrl":"https://doi.org/10.22038/JDMT.2021.53395.1399","url":null,"abstract":"Introduction: One of the most challenging cases in implantology is severely atrophic alveolar ridges which do not have adequate bone for implant placement. One common treatment option for dealing with this challenge is LeFort I osteotomy with inlay bone graft which allows implant insertion and correction of the maxillomandibular relationship simultaneously. Although this method has a high success rate, it is somewhat invasive and has potential complications in some cases. In recent decades, implant surgeons have focused on less invasive and more predictable treatment options for bone augmentation and implant rehabilitation. Now a question comes into mind when there are not much discrepancies in maxillomandibular skeletal relationship and inter arch distance, do we really need LeFort I down-grafting and take its risks? Methods: In this study, we present a case who did not need any change in the skeletal relationship of the jaws and inter arch space based on examination and prosthetic consultation, so we implemented bilateral simultaneous sinus and nasal floor augmentation instead of LeFort 1 interpositional inlay bone graft. Results: Six months after the surgery, new radiography showed adequate height and width of augmented bones gained in and under sinuses and nose floor. So there is no limitation on choosing suitable implant lengths and diameters. Conclusion: This study indicated successful augmentation of severely resorbed maxillary alveolar ridge with bilateral sinus and nose floor grafting technique instead of LeFort I interpositional bone graft in a case who didn’t have more discrepancies in skeletal and inter arch space.","PeriodicalId":15640,"journal":{"name":"Journal of Dental Materials and Techniques","volume":"20 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2021-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83574534","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