Journal of Stomatology最新文献_第9页

Evaluation of bond strength of resin nano-ceramic as post material 树脂纳米陶瓷作为post材料的粘结强度评价

Journal of Stomatology Pub Date : 2021-01-01 DOI: 10.5114/JOS.2021.106589

E. Çelik, F. Cakici, Evren Sarıyılmaz, Ayça Tulga, E. B. Cakici, D. Dede, S. Polat

{"title":"Evaluation of bond strength of resin nano-ceramic as post material","authors":"E. Çelik, F. Cakici, Evren Sarıyılmaz, Ayça Tulga, E. B. Cakici, D. Dede, S. Polat","doi":"10.5114/JOS.2021.106589","DOIUrl":"https://doi.org/10.5114/JOS.2021.106589","url":null,"abstract":"Introduction: Different usage areas of newly developed restorative materials have increased.. Objectives: The purpose of this study was to investigate usability of a newly produced resin nano-ceramic (RNC) as a post material, and how to increase bond strength of different post systems to root canal dentin. Material and methods: Crowns of eighty extracted maxillary central incisors were separated transversal-ly at cementoenamel junction. The specimens were then endodontically prepared. Post spaces were opened at a diameter of 1.8 mm with a length of 10 mm on the root, maintaining 4 mm of filling material in apical third. 40 RNC post and 40 fiber post samples were divided into 4 sub-groups ( n = 10), and different surface treatments were divided into control (Cnt), tribochemical coating (Tbc), and laser-irradiated (Lsr 1 and Lsr 2) groups. After adhesive cementation of posts to root canal dentin, the specimens were cut with 1 mm thicknesses. Push-out bond strength (PBS) tests were performed using a universal testing machine, and the results were analyzed using two-way analysis of variance and Tukey tests. Results: The highest PBS value for fiber post groups was observed in the Tbc group (6.51 MPa). The highest PBS values were observed in the Tbc group (6.22 MPa), particularly in the RNC post group, and this value was statistically different from the other groups ( p < 0.05). Conclusions: Tbc treatment of posts may be a suitable way for increasing the bond strength. The experimentally produced RNC posts showed PBS values close to the prefabricated fiber posts. Therefore, they could be an alternative restorative material for repairing endodontically treated teeth.","PeriodicalId":35469,"journal":{"name":"Journal of Stomatology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71125165","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

Curing depth and degree of conversion of different nano-hybrid composites 不同纳米杂化复合材料的固化深度和转化程度

Journal of Stomatology Pub Date : 2021-01-01 DOI: 10.5114/JOS.2021.108839

mohammad ali wannous, S. Abboud

引用次数: 1

In-vitro evaluation of micro-leakage of a universal adhesive used with different etching modes in compomer restorations 不同蚀刻方式通用胶粘剂在复合材料修复体中微渗漏的体外评价

Journal of Stomatology Pub Date : 2021-01-01 DOI: 10.5114/jos.2021.111657

Betul Busra Ursavas, T. Bezgin, Mert Ocak, B. Bilecenoğlu, Ayşe Işıl Orhan

{"title":"In-vitro evaluation of micro-leakage of a universal adhesive used with different etching modes in compomer restorations","authors":"Betul Busra Ursavas, T. Bezgin, Mert Ocak, B. Bilecenoğlu, Ayşe Işıl Orhan","doi":"10.5114/jos.2021.111657","DOIUrl":"https://doi.org/10.5114/jos.2021.111657","url":null,"abstract":"Introduction: In order to obtain a good prognosis in resin restorations, a strong adhesion not allowing leakage between tooth tissues and restoration should be provided. Effectiveness of universal adhesives on leakage in primary teeth compomer restorations has not been studied. Objectives: The objective of this study was to evaluate sealing ability of a universal adhesive used with different etching modes after 1- and 3-year of artificial aging in compomer restorations of primary teeth. Material and methods: Sixty-three extracted mandibular primary second molars were used in the study. Class II box cavities (3 mm × 3 mm × 1.5 mm) were prepared in each tooth. Then, teeth were divided into three groups ( n = 21), including total-etch, self-etch, and selective-etch modes. All teeth were restored with compomer (Dyract Extra, Dentsply; Konstanz, Germany) after universal adhesive (Prime & Bond Elect Universal, Denstsply; Milford, USA) application. Teeth were divided into three sub-groups ( n = 7) with the following three different aging protocols: 24 h water storage, 1-year aging, and 3-year aging with chewing simulator (Esetron Chewing Simulator; Ankara, Turkey). 50% silver nitrate solution was applied as a tracer, and its’ penetration was analyzed in mm3 using micro-computed tomography system (SkyScan 1275; Kontich, Belgium). Data was analyzed with Kruskal-Wallis H and Friedman tests. Results: One-year aging significantly increased the leakage in self-etch group of samples (0.197 ± 0.49 mm 3 ) compared to the total-etch (0.001 ± 0.000 mm 3 ) and selective-etch (0.001 ± 0.000 mm 3 ) groups ( p < 0.05). There was no diffe rence between the groups at baseline and after the 3-year artificial aging ( p > 0.05). Conclusions: Self-etch mode of adhesive revealed higher micro-leakage levels at all examination intervals; how-ever, the difference was only significant after the 1-year aging. It can be concluded that universal adhesives can be used with all etching modes in compomer restorations.","PeriodicalId":35469,"journal":{"name":"Journal of Stomatology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71125905","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

Dental anxiety before and after endodontic microsurgery 牙髓显微手术前后的焦虑

Journal of Stomatology Pub Date : 2021-01-01 DOI: 10.5114/JOS.2021.104696

Pamela Flores-Jara, Carlos Liñán-Durán, R. León-Manco, Allison Chávez-Alayo

{"title":"Dental anxiety before and after endodontic microsurgery","authors":"Pamela Flores-Jara, Carlos Liñán-Durán, R. León-Manco, Allison Chávez-Alayo","doi":"10.5114/JOS.2021.104696","DOIUrl":"https://doi.org/10.5114/JOS.2021.104696","url":null,"abstract":"Introduction: Endodontic microsurgery is a treatment option if previous procedures have been unsuccessful. As a result, many patients may suffer from a high level of dental anxiety. Dental anxiety impacts different aspects of life, so it is important to measure it with psychometric scales to avoid its underestimation. Previous studies related to dental anxiety used visual analogue scale (VAS), which is a quick and simple non-verbal measurement instrument. Objectives: The aim of this study was to measure and compare pre- and post-endodontic microsurgery dental anxiety using VAS. Material and methods: Thirty-five patients, who met the inclusion criteria and were previously scheduled to undergo endodontic microsurgery, answered VAS related to dental anxiety before and after the procedure. Microsurgery was performed by postgraduate students and monitored by a clinical supervisor. VAS values were analyzed with descriptive statistics. Shapiro-Wilk test determined to use Wilcoxon rank-sum test. Confidence level of the study was 95% and p < 0.05. Results: Anxiety levels showed no significant change over the analyzed period. Pre- and post-endodontic microsurgery anxiety levels did not markedly change in relation to gender either. Nevertheless, women’s anxiety median values tended to decrease after the endodontic microsurgery. On the contrary, men tended to increase their anxiety levels after the procedure. Conclusions: Within the limits of the present study, there was not a statistically significant difference in the pre-and post-endodontic microsurgery anxiety values.","PeriodicalId":35469,"journal":{"name":"Journal of Stomatology","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71124300","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

Effects of COVID-19 on education and functioning of healthcare faculties in Denizli, Turkey: a survey study 2019冠状病毒病对土耳其德尼兹利卫生保健院系教育和职能的影响:一项调查研究

Journal of Stomatology Pub Date : 2021-01-01 DOI: 10.5114/JOS.2021.104697

Özge Gizem Cabadağ, N. Akgül, B. Yazkan

{"title":"Effects of COVID-19 on education and functioning of healthcare faculties in Denizli, Turkey: a survey study","authors":"Özge Gizem Cabadağ, N. Akgül, B. Yazkan","doi":"10.5114/JOS.2021.104697","DOIUrl":"https://doi.org/10.5114/JOS.2021.104697","url":null,"abstract":"Introduction: The novel coronavirus disease, COVID-19, which evolved in Wuhan city of China, has become an important public health emergency that paralyzed life and negatively affected the entire world Objectives: The aim of the study was to evaluate a possible effect of coronavirus pandemic on healthcare from the perspective of academicians Material and methods: A questionnaire consisting of education and functioning of medical-related faculties in the process of COVID-19 was completed by academicians in medical sciences Data obtained from surveys were presented in pie/column charts and percentages Results: A total of 103 academicians contributed to the survey Most of the participants were concerned about themselves and their families Due to the COVID-19 pandemic, academicians indicated a permanent change in healthcare system In addition, they expressed worries about theoretical part of distance education and the effects of distance education on clinical practices Conclusions: According to obtained results, academicians in medical sciences reported significant changes occurring not only in providing healthcare services but also in educational aspect, which is a subject of concern In this period, in which restrictive and compelling effects are felt in the medical sector as in many other industries, there are still uncertainties regarding the future, and it can be seen that the \"normal life\"will never be the same as before © 2021 Polish Dental Association","PeriodicalId":35469,"journal":{"name":"Journal of Stomatology","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71124540","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

Dental students’ perceptions of distance learning in terms of various variables during a transition due to COVID-19 由于COVID-19的转变，牙科学生对远程学习的各种变量的看法

Journal of Stomatology Pub Date : 2021-01-01 DOI: 10.5114/JOS.2021.106498

D. Recen, A. Başer, Bengisu Yıldırım

{"title":"Dental students’ perceptions of distance learning in terms of various variables during a transition due to COVID-19","authors":"D. Recen, A. Başer, Bengisu Yıldırım","doi":"10.5114/JOS.2021.106498","DOIUrl":"https://doi.org/10.5114/JOS.2021.106498","url":null,"abstract":"Introduction: Coronavirus disease was declared as pandemic on February 11, 2020, with high mortality rates. It has caused public health concerns and affected social lifestyle of people, healthcare systems, and educational system. Objectives: The aim of this cross-sectional study was to investigate students’ perceptions of distance learning in pre-clinic (first- and second-year) classes. Material and methods: This study was conducted during the spring of 2020 on 125 pre-clinic dental students using a web-based questionnaire, with 40 close-ended and two open-ended questions developed based on existing literature about distance learning. Responses were analyzed using Kolmogorov-Smirnov test, independent t-test, χ2 test, and Mann-Whitney U test. Results: No significant differences were observed among all the scales (p > 0.05). However, when the scales were evaluated according to gender and grade, the preference scale showed statistically significant difference in gender (p = 0.029). Most of the students (47.9% strongly agree and 60.9% agree) thought that distance learning was a supportive factor for traditional teaching methods. Quantitative analyses revealed that although many students perceived the positive features of distance learning, including accessibility and flexible time management, some suffered from inequality in accessing the Internet. Conclusions: These findings suggest that even though distance learning is a valuable and preferable method for theoretical lessons, it can only be a supportive factor for formal education, as dental clinic skill lessons require face-to-face education. Dental schools should consider an alternate plan with appropriate policies for future pandemics. © 2021 Polish Dental Association","PeriodicalId":35469,"journal":{"name":"Journal of Stomatology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71124990","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

Pharyngeal airway volume among different vertical skeletal patterns using cone-beam computed tomography 不同垂直骨骼形态咽气道容积的锥形束计算机断层扫描

Journal of Stomatology Pub Date : 2021-01-01 DOI: 10.5114/JOS.2021.109141

A. Shokri, S. Lari, Faezeh Yousefi, Shoeib Fathi, Naser Mohammad gholi Mezerji

引用次数: 0

Evaluation of efficiency of low-level laser on relapse after orthodontic treatment: a randomized controlled clinical trial 评价低强度激光治疗正畸治疗后复发的有效性:一项随机对照临床试验

Journal of Stomatology Pub Date : 2021-01-01 DOI: 10.5114/JOS.2021.108838

O. A. Ayach, R. Hadad, O. Hamadah

引用次数: 1

Assessment of stress load among Polish and English dental students’ divisions in Poland 波兰波兰语和英语牙科专业学生的压力负荷评估

Journal of Stomatology Pub Date : 2021-01-01 DOI: 10.5114/JOS.2021.109185

Zofia Juszka, Wojciech Marchewka, Aleksandra Smolana, K. Szczeklik, Katarzyna Olszewska-Turek, B. Loster, J. Loster