Pub Date : 2024-07-01DOI: 10.21608/edj.2024.253377.2868
Mohamed Omaia, E. Abaza, Manal Abdelbaky
Background: Radiation therapy is a crucial component of cancer treatment, but it can have adverse effects on oral tissues, including teeth. The impact of radiation on the fracture resistance (FR) of endodontically treated teeth has piqued the interest of dental researchers. Bioceramic sealers like CeraSeal have shown promising dentin bonding and sealing abilities, but there is limited data on their FR compared to traditional resin-based sealers like ADSEAL. Therefore, the aim of this study was to investigate the effect of therapeutic radiation doses on the FR of root canal-treated teeth filled with gutta-percha and two sealers. Materials and Methods: Ninety extracted mandibular premolars were divided into experimental and control groups. Each group was further subdivided into subgroups with and without irradiation (n=15) and obturated with either ADSEAL or CeraSeal. The FR of each group was tested using a Universal Testing Machine. Statistical analyses included independent t-tests for matched groups and One-Way ANOVA followed by Tukey’s Post Hoc test for multiple comparisons (p < 0.05). Results: Before irradiation, both sealers significantly increased the FR compared to the control group. CeraSeal exhibited the highest FR, followed by ADSEAL. After irradiation, all groups showed a significant reduction in FR, with CeraSeal demonstrating the least reduction. Conclusions: Regardless of the sealer used, irradiation decreases the FR in root canal-treated teeth. CeraSeal outperformed ADSEAL in maintaining tooth strength after irradiation.
{"title":"The effect of therapeutic dose of gamma radiation on fracture resistance of endodontically treated tooth obturated using different types of sealers (An in-vitro study)","authors":"Mohamed Omaia, E. Abaza, Manal Abdelbaky","doi":"10.21608/edj.2024.253377.2868","DOIUrl":"https://doi.org/10.21608/edj.2024.253377.2868","url":null,"abstract":"Background: Radiation therapy is a crucial component of cancer treatment, but it can have adverse effects on oral tissues, including teeth. The impact of radiation on the fracture resistance (FR) of endodontically treated teeth has piqued the interest of dental researchers. Bioceramic sealers like CeraSeal have shown promising dentin bonding and sealing abilities, but there is limited data on their FR compared to traditional resin-based sealers like ADSEAL. Therefore, the aim of this study was to investigate the effect of therapeutic radiation doses on the FR of root canal-treated teeth filled with gutta-percha and two sealers. Materials and Methods: Ninety extracted mandibular premolars were divided into experimental and control groups. Each group was further subdivided into subgroups with and without irradiation (n=15) and obturated with either ADSEAL or CeraSeal. The FR of each group was tested using a Universal Testing Machine. Statistical analyses included independent t-tests for matched groups and One-Way ANOVA followed by Tukey’s Post Hoc test for multiple comparisons (p < 0.05). Results: Before irradiation, both sealers significantly increased the FR compared to the control group. CeraSeal exhibited the highest FR, followed by ADSEAL. After irradiation, all groups showed a significant reduction in FR, with CeraSeal demonstrating the least reduction. Conclusions: Regardless of the sealer used, irradiation decreases the FR in root canal-treated teeth. CeraSeal outperformed ADSEAL in maintaining tooth strength after irradiation.","PeriodicalId":11504,"journal":{"name":"Egyptian dental journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141716043","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}
Pub Date : 2024-07-01DOI: 10.21608/edj.2024.278569.2988
Aya Ahmed El Faham, A. Kaddah, Marwa Magdy Saad Abbass, Fady Fahim
Background: Pain resulting from orthodontic tooth movement is one of the annoying issues to the patient. This randomized clinical trial was conducted to determine the intensity of the pain that the patient experience upon teeth intrusion with different force magnitudes. Subjects and methods: fourteen female patients aged 15-18 years were selected randomly from the clinic of Orthodontic department of Faculty of Dentistry, Cairo University. Participants were divided into two equal groups (n=7). Group 1 where 25 grams of intrusive force were applied, Group 2 where 100 grams of intrusive force were applied. Via a paper visual analogue scale (VAS) distributed to each patient after the end of the three months of intrusion to assess their pain score. Results: For patients undergone 25 grams intrusive force, the mean VAS score was 1.8±0.4 with a median 2.0 and interquartile range (IQR):(2.0 to 2.0) vs. 4.4±0.5 with a median 4.0 and IQR:(4.0 to 5.0) for patients undergone 100 grams, indicating a statistically significant increased pain score among patients subjected to the higher intrusive force (absolute mean difference = 2.6, p <0.001). Conclusion: There is a positive correlation between force magnitude and pain. Pain intensity and its perception increases by increasing the intrusive force magnitude.
{"title":"Correlation between different intrusion force magnitudes and pain intensity in a group of adolescent females (A randomized clinical trial)","authors":"Aya Ahmed El Faham, A. Kaddah, Marwa Magdy Saad Abbass, Fady Fahim","doi":"10.21608/edj.2024.278569.2988","DOIUrl":"https://doi.org/10.21608/edj.2024.278569.2988","url":null,"abstract":"Background: Pain resulting from orthodontic tooth movement is one of the annoying issues to the patient. This randomized clinical trial was conducted to determine the intensity of the pain that the patient experience upon teeth intrusion with different force magnitudes. Subjects and methods: fourteen female patients aged 15-18 years were selected randomly from the clinic of Orthodontic department of Faculty of Dentistry, Cairo University. Participants were divided into two equal groups (n=7). Group 1 where 25 grams of intrusive force were applied, Group 2 where 100 grams of intrusive force were applied. Via a paper visual analogue scale (VAS) distributed to each patient after the end of the three months of intrusion to assess their pain score. Results: For patients undergone 25 grams intrusive force, the mean VAS score was 1.8±0.4 with a median 2.0 and interquartile range (IQR):(2.0 to 2.0) vs. 4.4±0.5 with a median 4.0 and IQR:(4.0 to 5.0) for patients undergone 100 grams, indicating a statistically significant increased pain score among patients subjected to the higher intrusive force (absolute mean difference = 2.6, p <0.001). Conclusion: There is a positive correlation between force magnitude and pain. Pain intensity and its perception increases by increasing the intrusive force magnitude.","PeriodicalId":11504,"journal":{"name":"Egyptian dental journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141712349","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}
Pub Date : 2024-07-01DOI: 10.21608/edj.2024.273662.2967
R. A. Abd ElAziz, Dina Kamal, Dina E. Ahmed
Aim : The aim of this randomized clinical trial was to assess the performance of a self-adhesive, bulk-fill hybrid (Surefil One TM , Dentsply Sirona, Konstanz, Germany) versus incremental, nanohybrid resin composite (Ceram.x® SphereTEC™ one Universal Nano-Ceramic Restorative, Dentsply Sirona, Konstanz, Germany) in restoring compound class II lesions over one-year follow up period. Materials and Methods: Sixty-two participants were randomly assigned to each group. All materials were placed upon manufacturer’s instructions. Restorations were assessed after 6-and 12-months intervals using the modified USPHS clinical criteria. Categorical data were analyzed using Fisher’s exact and McNemar’s tests for inter and intragroup comparisons respectively. Ordinal data were analyzed using Mann-Whitney U and Friedman’s test followed by Nemenyi post hoc test for inter and intragroup comparisons respectively. Survival analysis was done using Kaplan-Meier estimate and log-rank test. Results: Except for retention at 6 months, for all parameters and at both time intervals, there was a significant difference between the two groups with the control group having significantly higher percentage of cases with alpha score (p<0.05). For retention, surface roughness, recurrent caries, color match, anatomic form and proximal contact, there was a significant reduction in the percentage of cases with alpha score for the intervention group only after 12 months (p<0.05). Conclusion: Incremental, nanohybrid resin composite showed superior clinical performance than the self-adhesive, bulk-fill resin hybrid over one-year follow up.
目的：本随机临床试验的目的是评估在一年的随访期内，自粘性、大量填充混合树脂（Surefil One TM，Dentsply Sirona公司，德国康斯坦茨）与增量纳米混合树脂复合材料（Ceram.x® SphereTEC™ one通用纳米陶瓷修复体，Dentsply Sirona公司，德国康斯坦茨）在修复复合II类病变方面的性能。材料和方法：62 名参与者被随机分配到每组。所有材料均按照生产商的说明使用。在 6 个月和 12 个月后，采用修改后的 USPHS 临床标准对修复效果进行评估。分类数据分别采用费雪精确检验和麦克尼马检验进行组间和组内比较分析。组间和组内比较分别采用 Mann-Whitney U 和 Friedman 检验，然后进行 Nemenyi post hoc 检验。生存期分析采用 Kaplan-Meier 估计和对数秩检验。结果除 6 个月的保留率外，两组在所有参数和两个时间间隔上均存在显著差异，对照组的阿尔法评分显著高于对照组（P<0.05）。在保持率、表面粗糙度、复发龋、颜色匹配、解剖形态和近端接触方面，干预组只有在 12 个月后出现阿尔法评分的病例比例才有显著下降（P<0.05）。结论在一年的随访中，增量纳米混合树脂复合材料的临床表现优于自粘树脂混合材料。
{"title":"Performance of self-adhesive bulk-fill hybrid versus incremental resin composite in compound class II restorations: a one-year randomized clinical trial.","authors":"R. A. Abd ElAziz, Dina Kamal, Dina E. Ahmed","doi":"10.21608/edj.2024.273662.2967","DOIUrl":"https://doi.org/10.21608/edj.2024.273662.2967","url":null,"abstract":"Aim : The aim of this randomized clinical trial was to assess the performance of a self-adhesive, bulk-fill hybrid (Surefil One TM , Dentsply Sirona, Konstanz, Germany) versus incremental, nanohybrid resin composite (Ceram.x® SphereTEC™ one Universal Nano-Ceramic Restorative, Dentsply Sirona, Konstanz, Germany) in restoring compound class II lesions over one-year follow up period. Materials and Methods: Sixty-two participants were randomly assigned to each group. All materials were placed upon manufacturer’s instructions. Restorations were assessed after 6-and 12-months intervals using the modified USPHS clinical criteria. Categorical data were analyzed using Fisher’s exact and McNemar’s tests for inter and intragroup comparisons respectively. Ordinal data were analyzed using Mann-Whitney U and Friedman’s test followed by Nemenyi post hoc test for inter and intragroup comparisons respectively. Survival analysis was done using Kaplan-Meier estimate and log-rank test. Results: Except for retention at 6 months, for all parameters and at both time intervals, there was a significant difference between the two groups with the control group having significantly higher percentage of cases with alpha score (p<0.05). For retention, surface roughness, recurrent caries, color match, anatomic form and proximal contact, there was a significant reduction in the percentage of cases with alpha score for the intervention group only after 12 months (p<0.05). Conclusion: Incremental, nanohybrid resin composite showed superior clinical performance than the self-adhesive, bulk-fill resin hybrid over one-year follow up.","PeriodicalId":11504,"journal":{"name":"Egyptian dental journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141698703","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}
Pub Date : 2024-07-01DOI: 10.21608/edj.2024.291267.3045
Sameh Abou-Steit, Marwa Salem, Sarah Omar, Nouran Mahmoud
Purpose: To clinically evaluate the performance of lithium disilicate endocrowns and overlays, restoring root canal treated molars for one year. Methods: A total of 50 restorations, 25 overlays (group O) and 25 endocrowns (group E), were fabricated to restore root canal treated molars. All restorations were fabricated from lithium disilicate (IPS e. max CAD). After tooth preparation, digital impression was done followed by designing, milling and cementation of the restorations. Evaluation was done every 3 month for 12 months by three independent assessors using Modified USPHS criteria. Statistical analysis of collected data was performed with SPSS 20® , Graph Pad Prism® and Microsoft Excel 2016. Results: Regarding fracture and marginal adaptation, all restorations in both groups had Alpha score (100%); at base line and during the follow-ups. While for retention, all restorations in both groups had Alpha score (100%); at base line, after 3, 6, and 9 months. However, after 12 months, there was insignificant difference between both groups (P=0.08) as Alpha was (87, 100%) while Charlie was (13, 0%) regarding Group O & E respectively. Conclusion: Within the limitations of this study, e.max overlays showed good performance compared to e.max endocrowns for the restoration of endodontically treated teeth, after one year of clinical evaluation. E.max overlays represent a dependable restorative modality for endodontically treated molars.
目的：对二硅酸锂内冠和覆盖层修复根管治疗磨牙一年的性能进行临床评估。方法：共 50 个修复体，25 个覆盖体（O 组）：共制作了 50 个修复体，其中 25 个覆盖体（O 组）和 25 个内冠（E 组），用于修复根管治疗过的磨牙。所有修复体均由二硅酸锂（IPS e. max CAD）制成。牙体预备后，进行数字印模，然后设计、铣削和粘接修复体。在 12 个月的时间里，由三位独立的评估人员采用修改后的 USPHS 标准每 3 个月进行一次评估。使用 SPSS 20®、Graph Pad Prism® 和 Microsoft Excel 2016 对收集的数据进行统计分析。结果在断裂和边缘适应方面，两组的所有修复体在基线和随访期间都获得了 Alpha 分数（100%）。而在固位方面，两组的所有修复体在基线、3、6 和 9 个月后的 Alpha 得分均为（100%）。但在 12 个月后，O 组和 E 组的 Alpha 得分为（87，100%），Charlie 得分为（13，0%），两组之间的差异不明显（P=0.08）。结论在本研究的限制条件下，经过一年的临床评估，e.max覆盖层与e.max内冠相比，在牙髓治疗牙的修复方面表现良好。对于牙髓治疗后的磨牙，e.max覆盖层是一种可靠的修复方式。
{"title":"Clinical evaluation of the biomimetic aspect in the restoration of endodontically treated teeth (Randomized clinical trial)","authors":"Sameh Abou-Steit, Marwa Salem, Sarah Omar, Nouran Mahmoud","doi":"10.21608/edj.2024.291267.3045","DOIUrl":"https://doi.org/10.21608/edj.2024.291267.3045","url":null,"abstract":"Purpose: To clinically evaluate the performance of lithium disilicate endocrowns and overlays, restoring root canal treated molars for one year. Methods: A total of 50 restorations, 25 overlays (group O) and 25 endocrowns (group E), were fabricated to restore root canal treated molars. All restorations were fabricated from lithium disilicate (IPS e. max CAD). After tooth preparation, digital impression was done followed by designing, milling and cementation of the restorations. Evaluation was done every 3 month for 12 months by three independent assessors using Modified USPHS criteria. Statistical analysis of collected data was performed with SPSS 20® , Graph Pad Prism® and Microsoft Excel 2016. Results: Regarding fracture and marginal adaptation, all restorations in both groups had Alpha score (100%); at base line and during the follow-ups. While for retention, all restorations in both groups had Alpha score (100%); at base line, after 3, 6, and 9 months. However, after 12 months, there was insignificant difference between both groups (P=0.08) as Alpha was (87, 100%) while Charlie was (13, 0%) regarding Group O & E respectively. Conclusion: Within the limitations of this study, e.max overlays showed good performance compared to e.max endocrowns for the restoration of endodontically treated teeth, after one year of clinical evaluation. E.max overlays represent a dependable restorative modality for endodontically treated molars.","PeriodicalId":11504,"journal":{"name":"Egyptian dental journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141692328","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}
Pub Date : 2024-07-01DOI: 10.21608/edj.2024.283641.3017
Aya Zohdy, Marwa Beleidy, Sama Kotob, G. Elnaggar
Aim: To assess milling versus 3D printing construction technique and different pH media effect on the interim restorations surface roughness and color stability. Materials and methods: Fourteen 3D-printed resin and 14 milled PMMA discs were divided into two groups (n=7) based on pH media (Coffee and Fanta) for immersion. At two-time immersion intervals (1 and 7 days), the surface roughness using a non-contact profilometer and color stability using a spectrophotometer were tested. Results: Milled groups showed higher surface roughness at the baseline in both immersions and after 7 days immersion in coffee (0.2908±0.0015). After 7 days in Fanta, 3D printed group showed higher surface roughness (0.2921±0.0013). Considering color stability, after 1-and 7-days immersion, 3D printed group showed a higher color change (ΔE) in coffee (6.15±1.94) than milled group (3.97±1.24). Milled group showed a higher ΔE significance in Fanta (6.17±2.48) than 3D printed group (3.35±1.38). Conclusion: The surface roughness and color stability of interim restorations were affected by the material, construction technique, and different pH beverage consumption. After seven days, Coffee increased the milled interim surface roughness, whereas Fanta increased it in 3D printed restorations. Coffee immersion induced more color change in the 3D printed interim restorations while Fanta immersion induced more color change in the milled interim restorations after one and seven days.
目的：评估铣削与 3D 打印技术以及不同 pH 值介质对临时修复体表面粗糙度和颜色稳定性的影响。材料与方法：根据浸泡介质的 pH 值（咖啡和芬达），将 14 个 3D 打印树脂和 14 个研磨 PMMA 盘分为两组（n=7）。在两次浸泡间隔（1 天和 7 天）内，使用非接触式轮廓仪测试表面粗糙度，使用分光光度计测试颜色稳定性。结果显示在两次浸泡的基线和在咖啡中浸泡 7 天后，研磨组的表面粗糙度更高（0.2908±0.0015）。在芬达中浸泡 7 天后，3D 打印组的表面粗糙度更高（0.2921±0.0013）。在颜色稳定性方面，浸泡 1 天和 7 天后，3D 打印组在咖啡中的颜色变化（ΔE）（6.15±1.94）高于研磨组（3.97±1.24）。研磨组在芬达（6.17±2.48）中的ΔE 值高于 3D 打印组（3.35±1.38）。结论临时修复体的表面粗糙度和颜色稳定性受到材料、施工技术和饮用不同pH值饮料的影响。七天后，咖啡增加了研磨临时修复体的表面粗糙度，而芬达增加了 3D 打印修复体的表面粗糙度。咖啡浸泡会导致 3D 打印临时修复体发生更多颜色变化，而芬达浸泡会导致研磨临时修复体在 1 天和 7 天后发生更多颜色变化。
{"title":"SURFACE ROUGHNESS AND COLOR STABILITY OF MILLED VERSUS 3D PRINTED INTERIM RESTORATION AFTER IMMERSION IN TWO PH MEDIA (IN VITRO STUDY)","authors":"Aya Zohdy, Marwa Beleidy, Sama Kotob, G. Elnaggar","doi":"10.21608/edj.2024.283641.3017","DOIUrl":"https://doi.org/10.21608/edj.2024.283641.3017","url":null,"abstract":"Aim: To assess milling versus 3D printing construction technique and different pH media effect on the interim restorations surface roughness and color stability. Materials and methods: Fourteen 3D-printed resin and 14 milled PMMA discs were divided into two groups (n=7) based on pH media (Coffee and Fanta) for immersion. At two-time immersion intervals (1 and 7 days), the surface roughness using a non-contact profilometer and color stability using a spectrophotometer were tested. Results: Milled groups showed higher surface roughness at the baseline in both immersions and after 7 days immersion in coffee (0.2908±0.0015). After 7 days in Fanta, 3D printed group showed higher surface roughness (0.2921±0.0013). Considering color stability, after 1-and 7-days immersion, 3D printed group showed a higher color change (ΔE) in coffee (6.15±1.94) than milled group (3.97±1.24). Milled group showed a higher ΔE significance in Fanta (6.17±2.48) than 3D printed group (3.35±1.38). Conclusion: The surface roughness and color stability of interim restorations were affected by the material, construction technique, and different pH beverage consumption. After seven days, Coffee increased the milled interim surface roughness, whereas Fanta increased it in 3D printed restorations. Coffee immersion induced more color change in the 3D printed interim restorations while Fanta immersion induced more color change in the milled interim restorations after one and seven days.","PeriodicalId":11504,"journal":{"name":"Egyptian dental journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141688997","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}
Pub Date : 2024-07-01DOI: 10.21608/edj.2024.285714.3023
Huda Abed El-Haliem, Maha Mohamed Ebaya
Objective: To evaluate and compare the influence of various in-office bleaching agents on enamel color change and surface roughness Materials and Methods: Sixty human permanent maxillary central incisors were collected and maintained in cylinder plastic mold (1cm height and 2cm width). Teeth were assigned based on the test into two groups; color change test group (n=30), and the surface roughness test group (n=30). Based on the bleaching technique, each group was further assigned into 3 subgroups (n=10) (light activated bleaching agent: Philips Zoom, chemical-activated; Philips Dash and two layer technique chemical activated; Zoom QuickPro). A spectrophotometer was used to measure the enamel color change in each bleaching technique. In addition, a non-contact optical profilometer was used to assess the surface roughness both before and after bleaching. The outcomes for each test were analyzed statistically using Student’s t-test, one-way analysis of variance (ANOVA) followed by post-hoc tukey. The level of significance was set at p ≤ 0.005. Results : Considering the color change measurements, all tested groups after bleaching exhibited statistical significant difference (P=0.0112). The Zoom group had the highest mean values subsequently Dash and Quick pro groups. For the surface roughness results, there was no statistical significant difference of all the tested groups after bleaching (P=0.592). Conclusions: All the studied in-office bleaching systems had a positive effect on teeth whitening; with the highest whitening potential for the light-activated system in comparison to the chemical-activated and two layer bleaching techniques. The enamel surface roughness exhibited insignificant changes in the different studied systems.
目的评估和比较各种诊室漂白剂对珐琅质颜色变化和表面粗糙度的影响 材料与方法：收集 60 颗人类上颌恒中切牙，并将其保存在圆柱形塑料模具（高 1 厘米，宽 2 厘米）中。根据测试结果将牙齿分为两组：颜色变化测试组（30 个）和表面粗糙度测试组（30 个）。根据漂白技术，每组又分为 3 个亚组（n=10）（光激活漂白剂组：飞利浦 Zoom；化学激活漂白剂组：飞利浦 Zoom；化学激活漂白剂组：飞利浦 Zoom）：飞利浦 Zoom；化学激活；飞利浦 Dash；双层技术化学激活；Zoom QuickPro）。分光光度计用于测量每种漂白技术的珐琅质颜色变化。此外，还使用了非接触式光学轮廓仪来评估漂白前后的表面粗糙度。每项测试的结果均采用学生 t 检验、单因素方差分析（ANOVA）进行统计分析，然后进行事后检验。显著性水平设定为 p ≤ 0.005。结果：考虑到颜色变化的测量结果，漂白后的所有测试组都表现出显著的统计学差异（P=0.0112）。Zoom 组的平均值最高，其次是 Dash 组和 Quick pro 组。至于表面粗糙度结果，所有测试组在漂白后均无显着统计学差异（P=0.592）。结论所有研究的诊室漂白系统对牙齿美白都有积极作用；与化学激活和双层漂白技术相比，光激活系统的美白潜力最大。珐琅质表面粗糙度在所研究的不同漂白系统中变化不大。
{"title":"Effect of Different In-Office Bleaching techniques on Enamel Color and Surface Roughness: In Vitro Study","authors":"Huda Abed El-Haliem, Maha Mohamed Ebaya","doi":"10.21608/edj.2024.285714.3023","DOIUrl":"https://doi.org/10.21608/edj.2024.285714.3023","url":null,"abstract":"Objective: To evaluate and compare the influence of various in-office bleaching agents on enamel color change and surface roughness Materials and Methods: Sixty human permanent maxillary central incisors were collected and maintained in cylinder plastic mold (1cm height and 2cm width). Teeth were assigned based on the test into two groups; color change test group (n=30), and the surface roughness test group (n=30). Based on the bleaching technique, each group was further assigned into 3 subgroups (n=10) (light activated bleaching agent: Philips Zoom, chemical-activated; Philips Dash and two layer technique chemical activated; Zoom QuickPro). A spectrophotometer was used to measure the enamel color change in each bleaching technique. In addition, a non-contact optical profilometer was used to assess the surface roughness both before and after bleaching. The outcomes for each test were analyzed statistically using Student’s t-test, one-way analysis of variance (ANOVA) followed by post-hoc tukey. The level of significance was set at p ≤ 0.005. Results : Considering the color change measurements, all tested groups after bleaching exhibited statistical significant difference (P=0.0112). The Zoom group had the highest mean values subsequently Dash and Quick pro groups. For the surface roughness results, there was no statistical significant difference of all the tested groups after bleaching (P=0.592). Conclusions: All the studied in-office bleaching systems had a positive effect on teeth whitening; with the highest whitening potential for the light-activated system in comparison to the chemical-activated and two layer bleaching techniques. The enamel surface roughness exhibited insignificant changes in the different studied systems.","PeriodicalId":11504,"journal":{"name":"Egyptian dental journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141688851","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}
Pub Date : 2024-07-01DOI: 10.21608/edj.2024.286790.3026
Mohamed Zaki Bassiony, N. Ammar, Khaled Mahmoud Elsherif, Sherif M. Abd Elhamid
Objectives: This study aimed to compare the retention force of two different attachments namely, locator and resilient telescopic attachment in retaining two implant-assisted mandibular overdenture. Materials and Methods: Sixteen identical mandibular complete dentures were processed to be attached to a completely edentulous epoxy cast. Two implants were placed in the cast’s interforaminal region with the aid of a surgical guide. Dentures were randomly divided into two equal groups to be implant retained by either locator attachment (Group A), or telescopic attachment (Group B) using the direct pickup technique. Using the universal testing machine, a vertically oriented tensile load was applied parallel to the path of insertion until the attachments were detached from the abutments. The maximum load required for detachment (retentive force) was calculated at the baseline and following repeated insertions and removals. Results: Significant differences were observed in all three-time points (initial time point, after 90 days, and after 180 days) in both attachments. The Locator group had a significantly higher mean in comparison to the Peek telescopic group (p < 0.001). Conclusions: The locator had better retention than the peek telescopic group according to vertical dislodging forces in all three-time points.
{"title":"COMPARATIVE STUDY OF THE RETENTION FORCE BETWEEN TWO RESILIENT ATTACHMENTS IN MANDIBULAR IMPLANT OVERDENTURE (AN INVITRO STUDY)","authors":"Mohamed Zaki Bassiony, N. Ammar, Khaled Mahmoud Elsherif, Sherif M. Abd Elhamid","doi":"10.21608/edj.2024.286790.3026","DOIUrl":"https://doi.org/10.21608/edj.2024.286790.3026","url":null,"abstract":"Objectives: This study aimed to compare the retention force of two different attachments namely, locator and resilient telescopic attachment in retaining two implant-assisted mandibular overdenture. Materials and Methods: Sixteen identical mandibular complete dentures were processed to be attached to a completely edentulous epoxy cast. Two implants were placed in the cast’s interforaminal region with the aid of a surgical guide. Dentures were randomly divided into two equal groups to be implant retained by either locator attachment (Group A), or telescopic attachment (Group B) using the direct pickup technique. Using the universal testing machine, a vertically oriented tensile load was applied parallel to the path of insertion until the attachments were detached from the abutments. The maximum load required for detachment (retentive force) was calculated at the baseline and following repeated insertions and removals. Results: Significant differences were observed in all three-time points (initial time point, after 90 days, and after 180 days) in both attachments. The Locator group had a significantly higher mean in comparison to the Peek telescopic group (p < 0.001). Conclusions: The locator had better retention than the peek telescopic group according to vertical dislodging forces in all three-time points.","PeriodicalId":11504,"journal":{"name":"Egyptian dental journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141693538","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}
Pub Date : 2024-07-01DOI: 10.21608/edj.2024.271161.2955
Abdullah Mohamed Abdullah, rasha saed, Wael Jamil
Aim: This study was conducted to evaluate the microleakage around class V restorations of two self-adhesive restorative materials applied with different bonding techniques. Materials and methods: 60 Class V cavities were prepared on sound extracted molars then randomly divided into two groups according to the type of self-adhesive restorative materials tested (A); (A1): Surefil one™ bulk fill composite hybrid and (A2): Vertise™ Flow resin composite. Each group was subdivided into three subgroups of according to the bonding technique utilized (B); (B1): Selfadhesive restorative material alone, (B2): Acid etch+ Self-adhesive restorative material, and (B3): Acid etch+ adhesive system+ Self-adhesive restorative material. After restoring Class V cavities, specimens were immersed in methylene blue solution for four hours. Then specimens were sectioned at bucco-lingual direction through the center of the restorations. The tooth restoration interface was examined at the occlusal and cervical margins and dye penetration was measured in micrometer under a stereomicroscope. Results: Surefil One showed higher statistically significant microleakage mean values compared to Vertise Flow. In addition, the cervical margins showed higher microleakage mean values compared to the occlusal margins. Acid etch+ adhesive system+ Selfadhesive restorative material bonding technique showed the lowest statistically significant microleakage mean values with both tested material compared to other bonding techniques. Conclusions: Vertise Flow self-adhesive resin composite had better sealing ability to class V prepared cavities when compared to Surefil One bulk-fill composite hybrid. Universal adhesives with prior etching step improved the sealing ability of the tested self-adhesive restorative materials.
目的：本研究旨在评估使用不同粘接技术的两种自粘性修复材料在 V 类修复体周围的微渗漏情况。材料和方法：在健全拔出的臼齿上制备 60 个 V 类龋洞，然后根据测试的自粘性修复材料类型随机分为两组（A）；（A1）：Surefil one™ 体积填充复合材料混合组和 (A2)：Vertise™ Flow 树脂复合材料。根据使用的粘接技术，每组又分为三个亚组（B）；（B1）：单独使用自粘修复材料，(B2)酸蚀+自粘修复材料，以及（B3）：酸蚀+粘接系统+自粘性修复材料。修复 V 级龋洞后，将试样浸泡在亚甲蓝溶液中 4 小时。然后从修复体的中心向颊舌方向切开试样。在体视显微镜下检查咬合边缘和牙颈部边缘的牙齿修复界面，并以微米为单位测量染料渗透情况。结果：与 Vertise Flow 相比，Surefil One 在统计意义上显示出更高的微渗漏平均值。此外，与咬合边缘相比，颈缘的微渗漏平均值更高。与其他粘接技术相比，酸蚀+粘接系统+自粘修复材料粘接技术在统计意义上显示出的微渗漏平均值最低。结论与 Surefil One 体积填充复合材料混合体相比，Vertise Flow 自粘树脂复合材料对 V 类预备洞的封闭能力更强。通用粘合剂在蚀刻前的步骤提高了测试自粘修复材料的密封能力。
{"title":"Microleakage Evaluation of Self-Adhesive Restorative Materials Applied With Different Bonding Techniques (An in-vitro Study)","authors":"Abdullah Mohamed Abdullah, rasha saed, Wael Jamil","doi":"10.21608/edj.2024.271161.2955","DOIUrl":"https://doi.org/10.21608/edj.2024.271161.2955","url":null,"abstract":"Aim: This study was conducted to evaluate the microleakage around class V restorations of two self-adhesive restorative materials applied with different bonding techniques. Materials and methods: 60 Class V cavities were prepared on sound extracted molars then randomly divided into two groups according to the type of self-adhesive restorative materials tested (A); (A1): Surefil one™ bulk fill composite hybrid and (A2): Vertise™ Flow resin composite. Each group was subdivided into three subgroups of according to the bonding technique utilized (B); (B1): Selfadhesive restorative material alone, (B2): Acid etch+ Self-adhesive restorative material, and (B3): Acid etch+ adhesive system+ Self-adhesive restorative material. After restoring Class V cavities, specimens were immersed in methylene blue solution for four hours. Then specimens were sectioned at bucco-lingual direction through the center of the restorations. The tooth restoration interface was examined at the occlusal and cervical margins and dye penetration was measured in micrometer under a stereomicroscope. Results: Surefil One showed higher statistically significant microleakage mean values compared to Vertise Flow. In addition, the cervical margins showed higher microleakage mean values compared to the occlusal margins. Acid etch+ adhesive system+ Selfadhesive restorative material bonding technique showed the lowest statistically significant microleakage mean values with both tested material compared to other bonding techniques. Conclusions: Vertise Flow self-adhesive resin composite had better sealing ability to class V prepared cavities when compared to Surefil One bulk-fill composite hybrid. Universal adhesives with prior etching step improved the sealing ability of the tested self-adhesive restorative materials.","PeriodicalId":11504,"journal":{"name":"Egyptian dental journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141705622","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}
Pub Date : 2024-07-01DOI: 10.21608/edj.2024.288405.3034
Yousra Hassan Helaly, M. Abdelmotelb, Mona Nagy Hamdi, A. Elheeny
Aim: to assess the clinical and radiographic success rates of direct pulp capping versus pulpotomy using mineral trioxide aggregate (MTA) in the treatment of primary molars. Patients and methods: The current study was planned as a split-mouth randomized clinical trial. The trial included 50 healthy, cooperative children (32 boys [64%] and 18 girls [36%]) aged 4–7 years, with two deep carious lower second primary molars requiring vital pulp therapy. One hundred lower second primary molars were randomly classified into two groups according to the technique used: Group (1): direct pulp capping using MTA and Group 2: pulpotomy using MTA. Then each case was followed clinically and radiologically every 3, 6, and 12 months to detect success and failure rates. The clinical and radiographic outcome criteria were treated as binary data (present or absent) and tested using Mcnemar’s chi-square test. The alpha level of significance was set to 0.05 at 95% CI. Results: Over the follow-up period, no significant statistical difference was found between the two groups (p-value > 0.05). The overall success rates were 100% for both techniques clinically and radiographically after a 12-month follow-up period. Conclusion: In cooperative patients, in well-chosen cases, both direct pulp capping and pulpotomy may be dependable options for treating deeply decayed primary molars.
{"title":"PRIMARY MOLARS DIRECT PULP CAPPING VERSUS PULPOTOMY USING MTA: A SPLIT-MOUTH RANDOMIZED CLINICAL TRIAL","authors":"Yousra Hassan Helaly, M. Abdelmotelb, Mona Nagy Hamdi, A. Elheeny","doi":"10.21608/edj.2024.288405.3034","DOIUrl":"https://doi.org/10.21608/edj.2024.288405.3034","url":null,"abstract":"Aim: to assess the clinical and radiographic success rates of direct pulp capping versus pulpotomy using mineral trioxide aggregate (MTA) in the treatment of primary molars. Patients and methods: The current study was planned as a split-mouth randomized clinical trial. The trial included 50 healthy, cooperative children (32 boys [64%] and 18 girls [36%]) aged 4–7 years, with two deep carious lower second primary molars requiring vital pulp therapy. One hundred lower second primary molars were randomly classified into two groups according to the technique used: Group (1): direct pulp capping using MTA and Group 2: pulpotomy using MTA. Then each case was followed clinically and radiologically every 3, 6, and 12 months to detect success and failure rates. The clinical and radiographic outcome criteria were treated as binary data (present or absent) and tested using Mcnemar’s chi-square test. The alpha level of significance was set to 0.05 at 95% CI. Results: Over the follow-up period, no significant statistical difference was found between the two groups (p-value > 0.05). The overall success rates were 100% for both techniques clinically and radiographically after a 12-month follow-up period. Conclusion: In cooperative patients, in well-chosen cases, both direct pulp capping and pulpotomy may be dependable options for treating deeply decayed primary molars.","PeriodicalId":11504,"journal":{"name":"Egyptian dental journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141709681","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}
Background : Oral cancer is considered the 6 th most frequent cancer type worldwide. Different approaches were proposed to tackle the disease, though the traditional therapies failed to successfully treat the disease. Hence, natural medicines became under focus for their potential anticancer properties utilizing emerging concept of HADCs inhibition that offered potential strategy for cancer therapy. Methods: In the present study, the efficacy of Graviola extract ( Annona muricata
{"title":"Graviola (Annona muricata) Extract Loaded on Chitosan Nanoparticles Modulates HDACs in Tongue Squamous Cell Carcinoma","authors":"Shaimaa omr Zayed, Shaimaa M. Abdel Ghany, Usama Dakrory, Gomana Abdel Hmid, Shereen Hafez Ibrahim, Hussein . Sabit, Ghada Abdel Aziz","doi":"10.21608/edj.2024.291153.3044","DOIUrl":"https://doi.org/10.21608/edj.2024.291153.3044","url":null,"abstract":"Background : Oral cancer is considered the 6 th most frequent cancer type worldwide. Different approaches were proposed to tackle the disease, though the traditional therapies failed to successfully treat the disease. Hence, natural medicines became under focus for their potential anticancer properties utilizing emerging concept of HADCs inhibition that offered potential strategy for cancer therapy. Methods: In the present study, the efficacy of Graviola extract ( Annona muricata","PeriodicalId":11504,"journal":{"name":"Egyptian dental journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141706348","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}
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