Mansoura Journal of Dentistry最新文献_第7页

Effect of Two Post Space Depths on the Accuracy of the Scan 两个后置空间深度对扫描精度的影响

Mansoura Journal of Dentistry Pub Date : 2022-03-01 DOI: 10.21608/mjd.2022.226774

引用次数: 1

Effect of Incorporation of Bioactive Hydroxyapatite Nano-rods in Self-Etch Adhesive on Microleakage, Nanoleakage Pattern and Elemental analysis of Resin/Dentin Interface 生物活性羟基磷灰石纳米棒掺入自蚀刻胶粘剂对树脂/牙本质界面微渗漏、纳米渗漏模式及元素分析的影响

Mansoura Journal of Dentistry Pub Date : 2022-03-01 DOI: 10.21608/mjd.2022.226765

{"title":"Effect of Incorporation of Bioactive Hydroxyapatite Nano-rods in Self-Etch Adhesive on Microleakage, Nanoleakage Pattern and Elemental analysis of Resin/Dentin Interface","authors":"","doi":"10.21608/mjd.2022.226765","DOIUrl":"https://doi.org/10.21608/mjd.2022.226765","url":null,"abstract":": Objective: To compare the effect of four types of adhesives immediately and after 6 months storage in artificial saliva followed by thermocycling (2000 cycle) on microleakage patterns, the nanoleakage pattern, and elemental analysis of adhesive interface. Materials and Methods: A total of 120 extracted sound human permanent molars were selected. And assigned into 4 groups according to adhesive types (one step-self-etch (1S-SE) adhesive, modified self-etch adhesive with hydroxyapatite nanorods (HA-NR), universal adhesive, resin-modified glass ionomer-based adhesive). Each group was further subdivided into two subgroups according to time of testing, (a) immediately evaluated, (b) was subjected to the 6 months storage in artificial saliva followed by thermocycling. For each adhesive group, teeth divided into three groups according to test types: (I) for microleakage (ML) test (n =80), (II) for nanoleakage (NL) test (n =24), and (III) for elemental analysis test (n = 16). For the (ML) test, all collected data were tabulated and statistically analyzed using a statistical package with IBM SPSS. A Chi-squared test was used to compare microleakage scores among different adhesive groups. Results: The microleakage was significantly affected by the “type of adhesive material” (P ≤ 0.05) and the “time”. Another Chi-squared test showed that there was no significant difference in microleakage between occlusal and gingival margins among tested groups. Calcium and phosphate levels increased in, the modified self-etch adhesive group. Conclusion: Incorporation of bioactive hydroxyapatite nano-rods (HA-NR) into self-etch adhesives decreases microleakage and nanoleakage pattern of resin/dentin interface. It improves Calcium and Phosphate levels at the resin- dentin interface.","PeriodicalId":308616,"journal":{"name":"Mansoura Journal of Dentistry","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115797069","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

Diagnosis of Dental Cracks by Digital Bitewing Imaging: A Laboratory Study 用数字咬翼成像诊断牙齿裂纹的实验室研究

Mansoura Journal of Dentistry Pub Date : 2022-03-01 DOI: 10.21608/mjd.2022.226771

引用次数: 1

Complex Class II Bulk-Fill Resin Composite Restoration: Cuspal Deflection and Effect of Water Storage on Microleakage: A Laboratory Study 复合ⅱ类填充树脂复合材料修复:尖部挠度及储水对微渗漏的影响:实验室研究

Mansoura Journal of Dentistry Pub Date : 2022-03-01 DOI: 10.21608/mjd.2022.226767

引用次数: 0

Comparison of EMLA Cream versus Mucosal Vibration or Pre-cooling Systems as Topical Anesthetic Agents in Children EMLA乳膏与粘膜振动或预冷却系统作为儿童表面麻醉剂的比较

Mansoura Journal of Dentistry Pub Date : 2022-03-01 DOI: 10.21608/mjd.2022.226772

引用次数: 1

Maternal knowledge, Attitude and Possible Risk Factors of Early Childhood Caries among Preschool Children in Mansoura City 曼苏拉市学龄前儿童早期龋病孕产妇知识、态度及可能危险因素分析

Mansoura Journal of Dentistry Pub Date : 2021-12-01 DOI: 10.21608/mjd.2021.223402

Sherif G. Taha, S. Hegazy, Rasha I. Ramadan Saleh

{"title":"Maternal knowledge, Attitude and Possible Risk Factors of Early Childhood Caries among Preschool Children in Mansoura City","authors":"Sherif G. Taha, S. Hegazy, Rasha I. Ramadan Saleh","doi":"10.21608/mjd.2021.223402","DOIUrl":"https://doi.org/10.21608/mjd.2021.223402","url":null,"abstract":"Objective: ECC is a big problem facing our children in Mansoura city so this study was done to evaluate the knowledge and attitude of mothers toward ECC, determine the possible risk factors of ECC and determine the relationship between the caries experience of the mothers and the ECC experience of their children. Materials and Methods: A cross sectional study was done among 1500 mother and their children aged 1-4 years old. This study was based on close ended qestionnaires interview, in addition to salivary samples collection from 150 mothers and their children to detect the Streptococcus mutans counts in saliva. Results: About half of mothers or sometimes more significantly reported correct knowledge regarding most of the questions (p=0.001). Significant percentage of mothers had positive attitudes regarding all questions except for visiting the dentist for pain only and the main reason for visiting the dentist. Regarding the bacterial count, only 21.3% of the mothers had high bacterial counts with no statistical difference. As for children, 34% of them had high count with no statistical difference. Conclusion: Correct knowledge of the mothers is considered relatively low, while the positive attitude is considerably fair.","PeriodicalId":308616,"journal":{"name":"Mansoura Journal of Dentistry","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122289378","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

Comparison between Simvastatin and Allantoin in Bone Formation after Surgical Extraction of Mandibular Third Molars 辛伐他汀与尿囊素对下颌第三磨牙术后骨形成的影响

Mansoura Journal of Dentistry Pub Date : 2021-12-01 DOI: 10.21608/mjd.2021.223405

引用次数: 0

Remineralizing Efficacy of Chitosan-Based Nanomaterials on Artificially Induced Incipient Carious Lesions 壳聚糖基纳米材料对人工诱导早期龋齿的再矿化作用

Mansoura Journal of Dentistry Pub Date : 2021-12-01 DOI: 10.21608/mjd.2021.223395

Reem E. Azzam, S. Hegazy, N. Attia

{"title":"Remineralizing Efficacy of Chitosan-Based Nanomaterials on Artificially Induced Incipient Carious Lesions","authors":"Reem E. Azzam, S. Hegazy, N. Attia","doi":"10.21608/mjd.2021.223395","DOIUrl":"https://doi.org/10.21608/mjd.2021.223395","url":null,"abstract":"Objective: Assessment of the remineralizing efficacy of Bioactive glass-chitosan and Hydroxy Apatite-Chitosan on artificial white spot lesions. Materials and methods: Sixty extracted human permanent teeth were selected for the study. Specimens were divided into four groups: group 1: fluoride varnish (Voco), group 2: Bioactive Glass-Chitosan varnish (Nano gate company), group 3: Hydroxy Apatite-Chitosan varnish (Nano gate company), group 4: control (treated with remineralizing solution). Artificial carious lesions were induced in all the specimens and treated with respective varnishes twice daily for 7 days. The DIAGNOdent pen (Kavo DIAGNOdent pen 2190) readings were taken, and the surface characteristics of the enamel specimens were evaluated by SEM at baseline, after demineralization and after remineralization. Results: SEM evaluation showed favourable surface changes in all the four study groups after remineralization therapy. Intragroup comparison of DIAGNOdent readings showed a highly significant difference between baseline, post demineralization, and post remineralization values. However, the intergroup comparison was statistically nonsignificant. Conclusion: All test agents were comparable in their remineralization potential.","PeriodicalId":308616,"journal":{"name":"Mansoura Journal of Dentistry","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121963333","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

Efficiency of Er: YAG Laser in Veneers Debonding with Two Materials & Thicknesses-An in Vitro Study Er: YAG激光在两种材料及厚度单板脱粘中的效率-体外研究

Mansoura Journal of Dentistry Pub Date : 2021-12-01 DOI: 10.21608/mjd.2021.223399

引用次数: 1

Degree of Monomer conversion for different resinous materials used to lute ceramic laminate veneers (in vitro study) 不同树脂材料用于陶瓷层压单板的单体转化程度(体外研究)

Mansoura Journal of Dentistry Pub Date : 2021-12-01 DOI: 10.21608/mjd.2021.223398

Y. A. Fahmy, Ghada A. Abdelsattar, M. Zohdy

{"title":"Degree of Monomer conversion for different resinous materials used to lute ceramic laminate veneers (in vitro study)","authors":"Y. A. Fahmy, Ghada A. Abdelsattar, M. Zohdy","doi":"10.21608/mjd.2021.223398","DOIUrl":"https://doi.org/10.21608/mjd.2021.223398","url":null,"abstract":"Objective: Mechanical properties enhancement of luting materials Used for Ceramic Laminate Veneers Cementation may affect the performance and the durability of esthetic restorations. The present study was performed to evaluate the Degree of Monomer Conversion of three different light polymerized resinous materials. Materials and Methods: Forty five ceramic slices of shade A2 were machined from low translucenct (LT) IPS Emax CAD blocks (n=45)using (Isomet 4000) sawing machine cutting at a speed of 2500 rpm with water cooling, the block were sliced to a uniform standard thickness of 0.5 mm. IPS Emax CAD slices were covering three resinous materials, RelyX Veneer, filtek Z350xt flowable composite and preheated filtek Z350xt composite at 68°C, cured for 30 seconds and then separated from the slices, the 45 specimens were then divided according to the used luting material into three groups (n=15), the samples then prepared for analysis by Fourier Transform Infrared Spectroscope, uncured cement samples were also subjected to analysis. One-way ANOVA followed by Tukey’s post hoc test was used to study the effect of resinous material on degree of conversion.The significance level was set at P<0.05. Results: The highest mean value of DC was recorded for Rely X Veneer resin cement, followed by flowable composite, while the least DC was recorded for the preheated composite. Conclusion: Both light cured resin cement and flowable composite were superior to preheated composite regarding their degree of monomer conversion.","PeriodicalId":308616,"journal":{"name":"Mansoura Journal of Dentistry","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114784087","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