Ain Shams Dental Journal最新文献

{"title":"Regenerative Capability of Bone Marrow Stem Cells-Derived Secretome for Treating Traumatic Oral Ulcers in Albino Rats (Immunohistomorphometric Study)","authors":"Marwa Zeinhom Jaheen, M. Sholqamy, A. E. Sharfeldeen, Sabreen Gamal Khalil Amar","doi":"10.21608/asdj.2024.285158.1261","DOIUrl":"https://doi.org/10.21608/asdj.2024.285158.1261","url":null,"abstract":"","PeriodicalId":505319,"journal":{"name":"Ain Shams Dental Journal","volume":"62 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141279694","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}

{"title":"Effect of two different surface treatments on implant stability","authors":"Loay Mohamed, N. Nawar, Yasmin Thabet","doi":"10.21608/asdj.2022.146597.1132","DOIUrl":"https://doi.org/10.21608/asdj.2022.146597.1132","url":null,"abstract":"Aim: The purpose of this research was to compare the effects of two different implant surface treatments (Direct laser metal forming and Acid etching) on implant stability in All-on-4 implant retained mandibular overdentures. Materials and methods : In this investigation, 14 male patients were chosen. For each patient, four implants were inserted in the inter-foraminal region using the All-on-4 concept. The patients have been randomly separated into 2 groups according to the surface treatment of the dental implants. In group I patients were rehabilitated with an upper complete denture and a lower retained overdenture using All-on-4 concept with Direct Laser Metal Forming surface treated dental implants, while in Group II patients were rehabilitated with an upper complete denture and a lower retained overdenture using All-on-4 concept with acid etched surface treated dental implants. Utilizing the osstell device, resonance frequency analysis was used to measure and compare primary and secondary implant stability at the time of implant placement and at 3, and 6 months later. Results: Comparison was performed between the straight implants of both groups and revealed that implant stability of group I is significantly higher than group II after 3months and after 6 months, while revealed insignificant difference between them at the time of insertion. Comparison was performed between the angled implants of both groups and revealed that implant stability of group I is significantly higher than group II after 3months and after 6 months, while revealed insignificant difference between them in time of insertion . Conclusion: Direct Metal Laser Forming surface treatment increases secondary stability of angled implants supporting All-on-4 temporary prosthesis.","PeriodicalId":505319,"journal":{"name":"Ain Shams Dental Journal","volume":"53 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140400456","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}

{"title":"Efficacy of two different layer heights on the accuracy of 3-D printed orthodontic models","authors":"Kareem Shendy, Mona Abou El Fotouh, Tarek Ali, Sharaf Eldeen M. Abbas, Shaimaa Abuelsadat","doi":"10.21608/asdj.2024.252684.1196","DOIUrl":"https://doi.org/10.21608/asdj.2024.252684.1196","url":null,"abstract":"Aim: This study aimed to assess the accuracy of the 3D printed model by DLP technology at 50-µm and 100-µm layer height Materials and Methods: A desktop scanner, R700 desktop scanner (3Shape, Copenhagen, Denmark) was used to scan an orthodontic typo-dent cast. A total number of (20) models were printed using a Digital Light Processing 3D printer and divided into two separate group. The 1 st group (n=10) and the 2 nd (n=10) groups were printed at 50-μm and 100-μm layer heights respectively. Assessment was performed using the GOM Inspect suite to register both the reference and 3D printed digital models to detect the deviation in both X, Y, and Z axes. Results: Data were presented as mean and standard deviation values and were tested for normality using Shapiro-Wilk test. Data were non-parametric and were tested using Wilcoxon signed rank test. The significance level was set at p≤0.05 within all tests. In the molar area, 50-µm layer thickness showed statistically significant difference in the right side when compared with 100-µm. In the premolar region, there was no statistically significant differences between both groups in the right side except for the z-axis. The canine area demonstrated that the 50-µm layer height was statistically significant lower in deviation than 100-µm group in all directions. There was a strong agreement between both observers (ICC=0.965, 95%CI= (0.958:0.971), p<0.001). Conclusion: the results of our research as a whole show that models printed at 50-μm display lower deviations in X, Y, and Z axes with a more consistent distortion pattern when compared to 100-μm models. Besides, the ideal thickness for high precision requirements is 50 µm, whereas 100-μm could be used in printing diagnostic models.","PeriodicalId":505319,"journal":{"name":"Ain Shams Dental Journal","volume":"61 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140399477","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}

{"title":"Wound Healing Evaluation after Gingival Depigmentation Using Ceramic Soft Tissue Trimming Bur Versus Diode Laser: Randomized Clinical Trial","authors":"Mohamed Fouda, Suzan Seifallah, Hadir F Eldessouky, Mohamed Bissar","doi":"10.21608/asdj.2024.274669.1223","DOIUrl":"https://doi.org/10.21608/asdj.2024.274669.1223","url":null,"abstract":"Aim: To assess if ceramic soft tissue trimming bur equally efficient as a gingival depigmentation tool versus diode laser. Materials and Methods: A total of 30 patients who needed depigmentation procedures in upper jaw. In this study we used split mouth design by dividing the upper jaws into 2 equal halves. In Group 1, The soft tissue trimming bur performed the depigmentation treatment. The depigmentation process in Group 2 was completed using a laser. Results: Group I showed a significant difference at follow-up visits (p<0.001). Value recorded at 1 month (100.00±0.00) had the greatest mean value then 7 days (82.43±8.42) while value recorded at baseline (0.00±0.00) showed the least mean value. Pairwise assessments showed significantly different values (p<0.001). Group II had a significant variation at follow-up then 7 days (82.94±8.02) while at baseline (0.00±0.00) showed the least mean value. Pairwise comparisons showed significantly different values at different intervals (p<0.001). Conclusion: The outcomes of the two methods of treatment were nearly identical. Techniques like as ablation and abrasion were sufficient to provide satisfactory aesthetic results and a satisfactory healing process free from pain or infection. Compared to diode lasers, soft tissue trimmers are less expensive and easier to operate.","PeriodicalId":505319,"journal":{"name":"Ain Shams Dental Journal","volume":"48 208","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140406000","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}

{"title":"Effect of Nano-hydroxyapatite Toothpaste on Microhardness of Primary Teeth Enamel in Comparison with Two other Toothpastes “An in Vitro Study”","authors":"Marwa Mohamed, Reham Elghazawy, Amr Abd El-Aziz","doi":"10.21608/asdj.2023.164475.1145","DOIUrl":"https://doi.org/10.21608/asdj.2023.164475.1145","url":null,"abstract":"Aim: The purpose of the current study was to investigate the effect of a nano-hydroxyapatite toothpaste on microhardness primary teeth enamel in comparison with two other kinds of toothpaste (fluoride and miswak) regarding their effect on the microhardness of enamel by the Vickers hardness test and surface topography using scanning electron microscopy (SEM) Materials and methods: forty extracted primary molars were obtained from the outpatient clinic of the Pediatric Dentistry Department, Faculty of Dentistry, Ain-Shams University. samples were grouped into four main groups according to the type of toothpaste used. Group 1: specimens were brushed with Nano hydroxyapatite toothpaste. Group 2: specimens were brushed with fluoride toothpaste. Group 3: specimens were brushed with Miswak toothpaste. Group 4: specimens were immersed in distilled water; specimens were subjected to a microhardness test (the Vicker test) before and after the remineralization stage. The specimens from the Nano-HA groups, the positive control group, and the negative control group were prepared for SEM examination. These were analyzed using a scanning electron microscope. Results: The most significant finding was achieved in NHAP, followed by fluoride and then miswak, whereas the value was found to be at its lowest in distilled water. Conclusion: NHA toothpaste exerted remineralizing effects on the artificial carious lesion.","PeriodicalId":505319,"journal":{"name":"Ain Shams Dental Journal","volume":"52 37","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140400488","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}

{"title":"ASDJ Preface","authors":"","doi":"10.21608/asdj.2024.346388","DOIUrl":"https://doi.org/10.21608/asdj.2024.346388","url":null,"abstract":"","PeriodicalId":505319,"journal":{"name":"Ain Shams Dental Journal","volume":"58 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140403600","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}

{"title":"Accuracy of Eyes of AI™ Artificial Intelligence Driven Platform for Lateral Cephalometric Analysis","authors":"Hatem Saifeldin, Juan Osorio, Mingze Xi, Barbara Safwat, M. Khokher, Shenghong Li, Mostafa Ashmawy, Lobna Shalaby, Samuel Khela, Khoa Le, Sen Le, Dadong Wang","doi":"10.21608/asdj.2024.277176.1229","DOIUrl":"https://doi.org/10.21608/asdj.2024.277176.1229","url":null,"abstract":"","PeriodicalId":505319,"journal":{"name":"Ain Shams Dental Journal","volume":"189 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140405027","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}

{"title":"Effect of Multiple Firing Cycles and Temperatures on Mechanical Properties of Lithium Silicate","authors":"Noha Moustafa Hammouda, M. Zohdy, Tarek Salah Morsi","doi":"10.21608/asdj.2023.172443.1154","DOIUrl":"https://doi.org/10.21608/asdj.2023.172443.1154","url":null,"abstract":"Aim: This study was designed to assess the effect of multiple firing cycles with different firing temperatures on the Flexural strength and Micro shear bond strength of the lithium silicate. Materials and methods: Specimens of Lithium Silicate (obsidian) were divided into 2 groups according to the tests done. The first group, Obsidian blocks were sectioned into 36 bar-shaped samples for the three-point bending test, according to ISO 6872 standard. While the second group, the blocks were used to prepare 32 slices for measuring microshear bond strength. Each group was then divided into four subgroups according to the number of the firing cycles which were 1, 2, 3 and 5 firing cycles respectively. The flexural strength and microshear bond strength were measured separately. Results: For the first group, the highest flexural strength value was found in control samples, while the lowest value was found in 3 cycles’ samples. As for the second group, the highest micro shear bond strength value was found in samples subjected to 3 cycles, while the lowest value was found in 2 cycles’ samples. This shows that there was no significant difference between values of each group. Conclusion: Obsidian can be fired up to 5 firing cycles with no adverse effect on bond strength or flexural strength.","PeriodicalId":505319,"journal":{"name":"Ain Shams Dental Journal","volume":"46 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140398358","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}

{"title":"Effect of enamel thickness and dentin shade of resin composite on the final color reproduction.","authors":"Nermeen Diab, Khaled Nour, Mohamed Nasser","doi":"10.21608/asdj.2023.224645.1182","DOIUrl":"https://doi.org/10.21608/asdj.2023.224645.1182","url":null,"abstract":"Aim: To evaluate the effect of different dentin shades and different enamel shade thicknesses on the final color reproduction in class IV anterior resin composite restorations restored using the bilaminar technique. Materials and methods: 54 resin composite discs of 10mm diameter were prepared in this study. The discs were equally divided into 9 groups (n = 6) according to the two levels of the study, Level-1: Dentin shade (A1, A2 and A3) and Level-2: A3 enamel shade thickness (0.25mm, 0.5mm, 0.75mm). Each group had a 3mm-thick core layer of dentin shade either A1, A2 or A3 (ceram.x® duo, Dentsply Sirona, Germany) followed by the designated enamel shade thickness . Clinical spectrophotometer (VITA Easyshade® V, Germany) was used to measure the L*, a* and b* values of reference A1, A2 and A3 VITA classical shade tabs and resin composite discs. CIEDE2000 color difference formula (ΔE00) was adopted to calculate the color difference between the resin composite discs and their corresponding VITA classic shade tab. Data were analysed using two-way ANOVA followed by Tukey’s post hoc test. Comparison of main and simple effects were done utilizing one-way ANOVA followed by Tukey’s post hoc test. Results: Two-way ANOVA showed that the dentin shade and the enamel layer thickness as well as their interaction had a statistically significant effect on color difference (ΔE00) compared to the VITA classical reference tabs(p<0.001). Best shade matching to the control was obtained when A3 dentin shade was used with both 0.25mm and 0.75mm enamel thickness (3.13±0.48 and3.04±0.39, respectively) while least shade matching was obtained when A1 dentin shade was combined with 0.5mm enamel shade (6.07±0.41). Conclusions: When using the bilaminar technique in vertical anatomical layering of resin composite restorations, the thickness of the outer enamel composite together with the dentin shade used demonstrated a significant effect on the final shade. The lighter the dentin shade used the thicker the enamel thickness needed for better shade reproduction and matching.","PeriodicalId":505319,"journal":{"name":"Ain Shams Dental Journal","volume":"16 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140407896","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}

{"title":"Shaping Ability of Three Different Rotary Nickel Titanium Systems An In Vitro Study","authors":"Jihan Othman Ahmed, Tarek Abdel Aziz, A. El-gendy","doi":"10.21608/asdj.2023.243436.1190","DOIUrl":"https://doi.org/10.21608/asdj.2023.243436.1190","url":null,"abstract":"Aim: The aim of the study was to compare the changes in transportation and changes in curvature after instrumentation in WaveOne Gold (WOG) system and One Curve (OC) system. Protaper Next (PTN) system was used as reference for comparison. Material and Methods: A Forty-five human mandibular first molars were selected. Teeth were randomly allocated into three groups (n=15): Group 1: PTN; Group 2: WOG; Group 3: OC. Cone beam computed tomography (CBCT) were taken for all specimens before instrumentation. Pre instrumentation evaluation for angle of curvature was done using Schneider method. Also, transportation was evaluated using Gambill’s method. After instrumentation, radiographs (CBCT) were taken and changes in transportation and curvature were measured using Planmecca Romexis software. One-way ANOVA was used to compare between different groups, followed by Tukey’s Post Hoc test for multiple comparisons. Results: After root canal instrumentation, regarding transportation, results showed significant difference between all groups at 6mm level as PTN group showed highest transportation (P=0.09). While there was insignificant difference between groups at 3mm and 9 mm level. As for changes in curvature, there was insignificant difference between groups (P=0.46). Conclusion: Single file systems better respected the original canal anatomy compared with multi-sequence file system.","PeriodicalId":505319,"journal":{"name":"Ain Shams Dental Journal","volume":"49 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140400587","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}