Pub Date : 2024-07-21DOI: 10.21608/edj.2024.300035.3094
khaled Selim Selim, Samah Bahaa
{"title":"Effectiveness Of Smartphone Application In Improving Oral Hygiene Compared To Oral Instructions In Patients With Plaque-induced Gingivitis: A Randomized Controlled Trial","authors":"khaled Selim Selim, Samah Bahaa","doi":"10.21608/edj.2024.300035.3094","DOIUrl":"https://doi.org/10.21608/edj.2024.300035.3094","url":null,"abstract":"","PeriodicalId":11504,"journal":{"name":"Egyptian dental journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141818161","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 : 2024-07-10DOI: 10.21608/edj.2024.294462.3068
Gihan S. Hassan, Mayada Elhusseiny, Ghada A. Abdellatif, H. Ibrahim
{"title":"Histopathological Evaluation of Cholecalciferol Overdose on Tongue Structure of Albino Rats (Immunohistochemical Study)","authors":"Gihan S. Hassan, Mayada Elhusseiny, Ghada A. Abdellatif, H. Ibrahim","doi":"10.21608/edj.2024.294462.3068","DOIUrl":"https://doi.org/10.21608/edj.2024.294462.3068","url":null,"abstract":"","PeriodicalId":11504,"journal":{"name":"Egyptian dental journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141661375","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.2024.292224.3052
Abdelaziz Mohamed Emam, Abeer Abdelhakim Elgendy, M. Fakhr
Introduction: This in vitro study investigated the impact of access cavity design and obturation technique on void formation within root canal fillings. Material and Methods : Eighty-four extracted lower first molars were allocated to two groups based on access cavity design: ultraconservative (UCAC) and traditional (TAC). Each group was further subdivided for obturation with either lateral condensation (LC) or continuous wave compaction (CWC). Stereo-microscopic analysis assessed void percentage within the obturation material in the distal canal. Results: continuous wave obturation technique demonstrably reduced void formation compared to lateral condensation (p < 0.05), irrespective of access cavity design or location within the canal. The UCAC design exhibited a generally higher void percentage compared to TAC (p < 0.05), although the statistical significance varied depending on the obturation technique employed. The apical third of the distal canal consistently displayed the highest void percentages, likely attributable to inherent anatomical complexities. Conclusion : These findings suggested a potential challenge in optimizing both tooth structure preservation and obturation quality. While UCAC minimizes tooth removal, it might necessitate obturation techniques like CWC that offer superior void reduction capabilities, particularly in scenarios with limited access. Further research is warranted to explore strategies for mitigating void formation in UCAC preparations and to refine obturation techniques for achieving optimal long-term outcomes in endodontic therapy.
{"title":"The Effect of The Ultraconservative Access Cavity on The Homogeneity of Root Canal Obturation","authors":"Abdelaziz Mohamed Emam, Abeer Abdelhakim Elgendy, M. Fakhr","doi":"10.21608/edj.2024.292224.3052","DOIUrl":"https://doi.org/10.21608/edj.2024.292224.3052","url":null,"abstract":"Introduction: This in vitro study investigated the impact of access cavity design and obturation technique on void formation within root canal fillings. Material and Methods : Eighty-four extracted lower first molars were allocated to two groups based on access cavity design: ultraconservative (UCAC) and traditional (TAC). Each group was further subdivided for obturation with either lateral condensation (LC) or continuous wave compaction (CWC). Stereo-microscopic analysis assessed void percentage within the obturation material in the distal canal. Results: continuous wave obturation technique demonstrably reduced void formation compared to lateral condensation (p < 0.05), irrespective of access cavity design or location within the canal. The UCAC design exhibited a generally higher void percentage compared to TAC (p < 0.05), although the statistical significance varied depending on the obturation technique employed. The apical third of the distal canal consistently displayed the highest void percentages, likely attributable to inherent anatomical complexities. Conclusion : These findings suggested a potential challenge in optimizing both tooth structure preservation and obturation quality. While UCAC minimizes tooth removal, it might necessitate obturation techniques like CWC that offer superior void reduction capabilities, particularly in scenarios with limited access. Further research is warranted to explore strategies for mitigating void formation in UCAC preparations and to refine obturation techniques for achieving optimal long-term outcomes in endodontic therapy.","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":"141713021","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.2024.282084.3002
Ahmad M. Alhaddad, Saied Mohamed Abdelaziz, Fatma ElZahraa ElAbbasy
Aim: this study aims to to compare two sealers removability (bioceramic based and resin based) using three approaches (XP-endo shaper, XP-endo finisher, and Passive Ultrasonic Irrigation) in internal root resorption simulated teeth. Methodology: 132 extracted mandibular premolars were prepared and split, artificial cavities were placed on both teeth segments 5 mm from root apex then teeth segments were brought back together and fixed in epoxy resin model. Models were randomly assigned to six groups (n=22) according to the root canal filling and retreatment protocol. Group 1: (filled with GP + BC sealer and retreated using XP-endo Finisher). Group 2: (filled with GP + Resin sealer and retreated using XP-endo Finisher). Group 3: (filled with GP + BC sealer and retreated using XP-endo Shaper). Group 4: (filled with GP + Resin sealer and retreated using XP-endo Shaper). Group 5: (filled with GP + BC sealer and retreated using PUI). Group 6: (filled with GP + Resin sealer and retreated using PUI). Samples were incubated for 4 weeks then teeth were extracted from epoxy model and split again to evaluate sealer removability under digital light microscope. Results: No significant difference were found between the six groups when it comes to sealer removability Van der Sluis score (p = 0.013). Group 5 showed the highest Van der Sluis score followed by groups 1, 2, 4 and 6 without significant difference between them. Group 3 showed a significantly lower Van der Sluis score than group 5. There was no significant difference between group 3 and groups 1, 2, 4 and 6 in the Van der Sluis score. Conclusion: No treatment protocol was able to eliminate all sealer remnant effectively. Resin based sealer showed no significant difference when compared to Bioceramic based sealer when it comes to sealer removability, the exception was that XP-endo shaper showed significantly better results when compared to passive ultrasonic activation which has failed to remove Bioceramic remnants compared to XP-endo shaper.
目的：本研究旨在使用三种方法（XP-endo shaper、XP-endo finisher 和 Passive Ultrasonic Irrigation）比较两种封闭剂（生物陶瓷封闭剂和树脂封闭剂）在牙根内吸收模拟牙中的可去除性。方法：制备并分割 132 颗拔出的下颌前磨牙，在距根尖 5 毫米的两侧牙段上放置人工龋洞，然后将两侧牙段合拢并固定在环氧树脂模型中。根据根管充填和再治疗方案，模型被随机分配到六组（n=22）。第 1 组：（填充 GP + BC 封闭剂，使用 XP-endo Finisher 再处理）。第 2 组：（填充 GP + 树脂封闭剂，使用 XP-endo Finisher 修复）。第 3 组：（填充 GP + BC 封闭剂，然后使用 XP-endo Shaper 修整器修整）。第 4 组：（填充 GP + 树脂密封剂，使用 XP-endo Shaper 修整器修整）。第 5 组：（填充 GP + BC 密封胶，使用 PUI 修复）。第 6 组：（填充 GP + 树脂封孔剂，使用 PUI 修复）。将样本培养 4 周，然后从环氧树脂模型中提取牙齿并再次分割，在数码显微镜下评估封闭剂的可去除性。结果：六组之间在封闭剂可去除性 Van der Sluis 评分方面没有发现明显差异（p = 0.013）。第 5 组的 Van der Sluis 得分最高，其次是第 1、2、4 和 6 组，组间无明显差异。第 3 组的 Van der Sluis 得分明显低于第 5 组，而第 3 组与第 1、2、4 和 6 组的 Van der Sluis 得分没有明显差异。结论没有一种治疗方案能有效消除所有的封闭剂残留。树脂类封闭剂与生物陶瓷类封闭剂在封闭剂去除性方面没有明显差异，但XP-endo成型器与被动超声波激活相比效果明显更好，而被动超声波激活与XP-endo成型器相比在去除生物陶瓷残留物方面效果不佳。
{"title":"The ability of three different protocols in removing Bioceramic- and Resin-Based sealers from simulated internal resorption cavities: an in vitro study","authors":"Ahmad M. Alhaddad, Saied Mohamed Abdelaziz, Fatma ElZahraa ElAbbasy","doi":"10.21608/edj.2024.282084.3002","DOIUrl":"https://doi.org/10.21608/edj.2024.282084.3002","url":null,"abstract":"Aim: this study aims to to compare two sealers removability (bioceramic based and resin based) using three approaches (XP-endo shaper, XP-endo finisher, and Passive Ultrasonic Irrigation) in internal root resorption simulated teeth. Methodology: 132 extracted mandibular premolars were prepared and split, artificial cavities were placed on both teeth segments 5 mm from root apex then teeth segments were brought back together and fixed in epoxy resin model. Models were randomly assigned to six groups (n=22) according to the root canal filling and retreatment protocol. Group 1: (filled with GP + BC sealer and retreated using XP-endo Finisher). Group 2: (filled with GP + Resin sealer and retreated using XP-endo Finisher). Group 3: (filled with GP + BC sealer and retreated using XP-endo Shaper). Group 4: (filled with GP + Resin sealer and retreated using XP-endo Shaper). Group 5: (filled with GP + BC sealer and retreated using PUI). Group 6: (filled with GP + Resin sealer and retreated using PUI). Samples were incubated for 4 weeks then teeth were extracted from epoxy model and split again to evaluate sealer removability under digital light microscope. Results: No significant difference were found between the six groups when it comes to sealer removability Van der Sluis score (p = 0.013). Group 5 showed the highest Van der Sluis score followed by groups 1, 2, 4 and 6 without significant difference between them. Group 3 showed a significantly lower Van der Sluis score than group 5. There was no significant difference between group 3 and groups 1, 2, 4 and 6 in the Van der Sluis score. Conclusion: No treatment protocol was able to eliminate all sealer remnant effectively. Resin based sealer showed no significant difference when compared to Bioceramic based sealer when it comes to sealer removability, the exception was that XP-endo shaper showed significantly better results when compared to passive ultrasonic activation which has failed to remove Bioceramic remnants compared to XP-endo shaper.","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":"141690359","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.2024.294401.3066
Ghada Abdel Monim, M. Shawky, M. Shaker, Mohammed Abdel Rasoul, I. Chehata
Background: Advances in computer-aided surgeries and virtual planning have increased the precision of surgically guided techniques and have improved the utilization of specific-patient implants. The purpose of this research was to present a radiographic technique for evaluating the gain of soft tissue with computer guided advancement genioplasty versus specific-patient PEEK chin implants in patients having recessed chins. Materials and methods: Patients with recessed chins who required corrective genioplasty were selected and divided arbitrarily and evenly into 2 groups. Group A underwent computer-guided advancement genioplasty. While, Group B was given a specific-patient PEEK onlay chin implant. Preoperative and 1-year postoperative CT images were superimposed, and the 3D produced soft tissue shapes were compared. Patients were provided with information on the study’s purpose, as well as the potential risks and advantages associated with the surgery and treatment plan. Verbal consent was obtained from all patients to confirm their approval to participate in the present study. Results: Ten patients were included in each group. The chin advancement mean in Group A was 7.569 mm ± 0.82 having significantly higher mean than 6.20 mm ± 1.26 for Group B . The 1 year gain of soft tissue mean in Group A was 7.195 mm ± 0.67 having significantly higher mean than 4.745 mm ± 1.65 for Group B . Conclusion: Radiographic soft tissue assessment is a dependable method for evaluating changes in soft tissues. In addition, Computer guided advancement genioplasty may result in greater improvement of soft tissue than PEEK chin implants.
背景：计算机辅助手术和虚拟规划的进步提高了手术引导技术的精确度，并改善了特定患者植入物的使用。本研究的目的是介绍一种放射成像技术，用于评估下巴凹陷患者使用计算机辅助下颌前突成形术与特定患者 PEEK 下巴植入物的软组织增益情况。材料和方法：选取下巴后缩并需要进行基因整形术矫正的患者，将其任意平均分为两组。A 组接受计算机辅助下颌前突成形术。而 B 组则植入特定患者的 PEEK 下巴假体。对术前和术后一年的 CT 图像进行叠加，并对三维软组织形状进行比较。向患者介绍了研究的目的，以及手术和治疗方案的潜在风险和优点。所有患者均已口头同意参与本研究。研究结果每组包括 10 名患者。A 组的下巴前移平均值为 7.569 mm ± 0.82，明显高于 B 组的 6.20 mm ± 1.26。A 组 1 年的软组织增量平均值为 7.195 mm ± 0.67，明显高于 B 组的 4.745 mm ± 1.65。结论影像学软组织评估是评估软组织变化的可靠方法。此外，与聚醚醚酮（PEEK）下巴假体相比，计算机辅助下颌前突成形术对软组织的改善更大。
{"title":"Radiographic Assessment Of Soft Tissue Changes In Advancement Genioplasty: Computer Guided Osteotomy Versus Peek Onlay Approach: A Randomized Clinical Trial","authors":"Ghada Abdel Monim, M. Shawky, M. Shaker, Mohammed Abdel Rasoul, I. Chehata","doi":"10.21608/edj.2024.294401.3066","DOIUrl":"https://doi.org/10.21608/edj.2024.294401.3066","url":null,"abstract":"Background: Advances in computer-aided surgeries and virtual planning have increased the precision of surgically guided techniques and have improved the utilization of specific-patient implants. The purpose of this research was to present a radiographic technique for evaluating the gain of soft tissue with computer guided advancement genioplasty versus specific-patient PEEK chin implants in patients having recessed chins. Materials and methods: Patients with recessed chins who required corrective genioplasty were selected and divided arbitrarily and evenly into 2 groups. Group A underwent computer-guided advancement genioplasty. While, Group B was given a specific-patient PEEK onlay chin implant. Preoperative and 1-year postoperative CT images were superimposed, and the 3D produced soft tissue shapes were compared. Patients were provided with information on the study’s purpose, as well as the potential risks and advantages associated with the surgery and treatment plan. Verbal consent was obtained from all patients to confirm their approval to participate in the present study. Results: Ten patients were included in each group. The chin advancement mean in Group A was 7.569 mm ± 0.82 having significantly higher mean than 6.20 mm ± 1.26 for Group B . The 1 year gain of soft tissue mean in Group A was 7.195 mm ± 0.67 having significantly higher mean than 4.745 mm ± 1.65 for Group B . Conclusion: Radiographic soft tissue assessment is a dependable method for evaluating changes in soft tissues. In addition, Computer guided advancement genioplasty may result in greater improvement of soft tissue than PEEK chin implants.","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":"141692011","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.2024.282398.3004
Y. El-Bouhi
Background/Aim: This in vitro study aimed to evaluate the microtensile bond strength (µTBS) of a self-adhesive flowable resin composite (Vertise Flow) under simulated intrapulpal pressure IPP) and compare it to a conventional adhesive and flowable composite combination. Materials and Methods: Thirty human molars were used. IPP of 15 cm H 2 O was applied. Group I (control): Adeper Easy One + Z 250 (composite), Group II: Etching + Adeper Easy One + Z 250, Group III: Adeper Easy One + flowable composite + Z 250, Group IV: Etching + Adeper Easy One + flowable composite + Z 250, Group V: Vertise Flow + Z 250, and Group VI: Etching + Vertise Flow + Z 250. Data analysis employed one-way ANOVA with Tukey’s post-hoc test for inter-group comparisons (at P < 0.05). Results: Etching the dentin prior to bonding with Adeper Easy One significantly increased µTBS to 25.12 MPa (S.D.: 5.78 MPa). Application of flowable composite resulted in a µTBS of 13.62 MPa (S.D. = 5.50 MPa), not statistically different. Group IV exhibited the highest mean µTBS (31.26 MPa, S.D. = 6.04 MPa). Group V showed the lowest mean µTBS (8.89 MPa, S.D. = 0.97 MPa). Etching before application of Vertise Flow in Group VI showed significant increased µTBS to 13.83 MPa (S.D. = 1.33 MPa) Conclusion: Dentin conditioning before application of Vetise Flow is necessary to produce a µTBS comparable to that of conventional approach of self-etch adhesive.
背景/目的：这项体外研究旨在评估自粘性可流动树脂复合材料（Vertise Flow）在模拟龈内压 IPP 下的微张力粘结强度（µTBS），并将其与传统粘合剂和可流动复合材料组合进行比较。材料和方法：使用 30 颗人类臼齿。施加 15 cm H 2 O 的 IPP。第一组（对照组）：第二组：蚀刻 + Adeper Easy One + Z 250；第三组：Adeper Easy One + 可流动复合材料 + Z 250；第四组：蚀刻 + Adeper Easy One + 可流动复合材料 + Z 250；第五组：Vertise Flow + Z 250；第六组：蚀刻 + Vertise Flow + Z 250。数据分析采用单因素方差分析和 Tukey 后检验进行组间比较（P < 0.05）。结果在使用 Adeper Easy One 进行粘接之前对牙本质进行蚀刻，可将 µTBS 显著提高至 25.12 兆帕（标准偏差：5.78 兆帕）。使用可流动复合材料后，µTBS 为 13.62 兆帕（标准差 = 5.50 兆帕），无统计学差异。第四组的平均 µTBS 值最高（31.26 兆帕，S.D. = 6.04 兆帕）。第五组的平均 µTBS 值最低（8.89 兆帕，标准差 = 0.97 兆帕）。第六组在使用 Vertise Flow 前进行的蚀刻显示 µTBS 显著增加到 13.83 兆帕（S.D. = 1.33 兆帕）：在使用 Vetise Flow 之前有必要对牙本质进行调节，以获得与传统自酸蚀粘合剂方法相当的 µTBS 值。
{"title":"Effect of Simulated Intrapulpal Pressure on Microtensile Bond Strength of Self-adhesive Resin Composite to Dentin","authors":"Y. El-Bouhi","doi":"10.21608/edj.2024.282398.3004","DOIUrl":"https://doi.org/10.21608/edj.2024.282398.3004","url":null,"abstract":"Background/Aim: This in vitro study aimed to evaluate the microtensile bond strength (µTBS) of a self-adhesive flowable resin composite (Vertise Flow) under simulated intrapulpal pressure IPP) and compare it to a conventional adhesive and flowable composite combination. Materials and Methods: Thirty human molars were used. IPP of 15 cm H 2 O was applied. Group I (control): Adeper Easy One + Z 250 (composite), Group II: Etching + Adeper Easy One + Z 250, Group III: Adeper Easy One + flowable composite + Z 250, Group IV: Etching + Adeper Easy One + flowable composite + Z 250, Group V: Vertise Flow + Z 250, and Group VI: Etching + Vertise Flow + Z 250. Data analysis employed one-way ANOVA with Tukey’s post-hoc test for inter-group comparisons (at P < 0.05). Results: Etching the dentin prior to bonding with Adeper Easy One significantly increased µTBS to 25.12 MPa (S.D.: 5.78 MPa). Application of flowable composite resulted in a µTBS of 13.62 MPa (S.D. = 5.50 MPa), not statistically different. Group IV exhibited the highest mean µTBS (31.26 MPa, S.D. = 6.04 MPa). Group V showed the lowest mean µTBS (8.89 MPa, S.D. = 0.97 MPa). Etching before application of Vertise Flow in Group VI showed significant increased µTBS to 13.83 MPa (S.D. = 1.33 MPa) Conclusion: Dentin conditioning before application of Vetise Flow is necessary to produce a µTBS comparable to that of conventional approach of self-etch adhesive.","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":"141706246","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.2024.267865.2923
Asmaa Ahmed Desouky, Mohamed Badawy Badawy, Weaam Anous
Aim: This study seeks to assess the cytotoxic impact of various bioceramic sealers, namely Well-Root ST, CeraSeal, and NeoSEALER Flo, in comparison to AH Plus sealer. The evaluation encompasses both the fresh and set states of these sealers, employing the MTT assay on human periodontal ligament fibroblasts. Materials and methods: Following the manufacturers’ instructions, the four tested sealers were blended in a sterile environment and then placed into standardized plastic rings. Extracts derived from the tested sealers were applied to human periodontal ligament fibroblasts. The freshly mixed sealers were examined immediately after mixing, with their extracts prepared at that moment. On the other hand, the remaining specimens, designated as set specimens, were incubated in a humidified environment with 5% CO2 and 95% air at 37º C for 24 hours before extraction to create extracts of the tested sealers. The extracted material was then diluted with DMEM to achieve twelve distinct concentrations of each extract 50%, 25%, 12.5%, 6.25%, 3.12%, 1.56%, 0.78%, 0.4%, 0.2%, 0.1%, 0.05%, and 0.025%. The cytotoxicity of all root canal sealers was evaluated using the MTT assay, followed by the calculation of cell viability percentages. Results: AH Plus showed the highest toxicity followed by the NeoSEALER Flo then Well-Root ST and the least toxicity was CeraSeal. Conclusion: The assessed root canal sealers exhibited differing levels of cytotoxicity, and the rise in cell viability percentages was contingent on the concentration.
{"title":"Cytotoxicity of Different Bioceramic Sealers","authors":"Asmaa Ahmed Desouky, Mohamed Badawy Badawy, Weaam Anous","doi":"10.21608/edj.2024.267865.2923","DOIUrl":"https://doi.org/10.21608/edj.2024.267865.2923","url":null,"abstract":"Aim: This study seeks to assess the cytotoxic impact of various bioceramic sealers, namely Well-Root ST, CeraSeal, and NeoSEALER Flo, in comparison to AH Plus sealer. The evaluation encompasses both the fresh and set states of these sealers, employing the MTT assay on human periodontal ligament fibroblasts. Materials and methods: Following the manufacturers’ instructions, the four tested sealers were blended in a sterile environment and then placed into standardized plastic rings. Extracts derived from the tested sealers were applied to human periodontal ligament fibroblasts. The freshly mixed sealers were examined immediately after mixing, with their extracts prepared at that moment. On the other hand, the remaining specimens, designated as set specimens, were incubated in a humidified environment with 5% CO2 and 95% air at 37º C for 24 hours before extraction to create extracts of the tested sealers. The extracted material was then diluted with DMEM to achieve twelve distinct concentrations of each extract 50%, 25%, 12.5%, 6.25%, 3.12%, 1.56%, 0.78%, 0.4%, 0.2%, 0.1%, 0.05%, and 0.025%. The cytotoxicity of all root canal sealers was evaluated using the MTT assay, followed by the calculation of cell viability percentages. Results: AH Plus showed the highest toxicity followed by the NeoSEALER Flo then Well-Root ST and the least toxicity was CeraSeal. Conclusion: The assessed root canal sealers exhibited differing levels of cytotoxicity, and the rise in cell viability percentages was contingent on the concentration.","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":"141695132","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.2024.273507.2962
Amr Salah el-din Gomaa, Amr abd el bary emara, Elsayed H. Ali, Omayma Mohamad
Objectives: Comparing the accuracy of all on four implants supported hybrid prosthesis which gained from two different impression techniques (digital versus conventional) in order to show its effect on marginal bone loss. Materials and Methods: 16 completely edentulous patients with age range above 60 years were participated in this study received new upper and lower dentures. Placement of four implants in the inter-foraminal area of the mandible were done according to the concept of “All on four implants” followed by immediate loading with the lower denture. Three months later, the patients were divided in a random manner into two equal groups: Group I: performed a digital intraoral scanning for lower arch, Group II: performed an open tray abutment level impression technique for lower arch then a hyprid prosthesis were fabricated and measure the level of bone loss in 0,3,6,12 months radiographicaly. Results: The results of this study showed statistically insignificant less bone height changes in Group I in comparison to Group II according to the radiographic outcomes. Conclusion: All on 4 mandibular implant hybrid prosthesis fabricated from digital impression prove to be more precise and more reliable than that fabricated from conventional impression and regarding bone height changes the group of digital impression showed less marginal bone loss that enhance prognosis of dental prosthesis and implant survival rate.
{"title":"The Effect of Accuracy of All on 4 Mandibular Implant Hybrid Prosthesis Fabricated by Two Different Impression Techniques (Digital versus Conventional) on Bone Loss.","authors":"Amr Salah el-din Gomaa, Amr abd el bary emara, Elsayed H. Ali, Omayma Mohamad","doi":"10.21608/edj.2024.273507.2962","DOIUrl":"https://doi.org/10.21608/edj.2024.273507.2962","url":null,"abstract":"Objectives: Comparing the accuracy of all on four implants supported hybrid prosthesis which gained from two different impression techniques (digital versus conventional) in order to show its effect on marginal bone loss. Materials and Methods: 16 completely edentulous patients with age range above 60 years were participated in this study received new upper and lower dentures. Placement of four implants in the inter-foraminal area of the mandible were done according to the concept of “All on four implants” followed by immediate loading with the lower denture. Three months later, the patients were divided in a random manner into two equal groups: Group I: performed a digital intraoral scanning for lower arch, Group II: performed an open tray abutment level impression technique for lower arch then a hyprid prosthesis were fabricated and measure the level of bone loss in 0,3,6,12 months radiographicaly. Results: The results of this study showed statistically insignificant less bone height changes in Group I in comparison to Group II according to the radiographic outcomes. Conclusion: All on 4 mandibular implant hybrid prosthesis fabricated from digital impression prove to be more precise and more reliable than that fabricated from conventional impression and regarding bone height changes the group of digital impression showed less marginal bone loss that enhance prognosis of dental prosthesis and implant survival rate.","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":"141701090","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.2024.287985.3031
Al-Zahraa Mohamed El-Marhomy, A. Nassar
Aim: To evaluate the marginal seal of sonic-activated composite resin using various dispensing rates in class V restorations. Materials and methods: Standardized class V cavities were performed in forty extracted sound human molars that were arbitrarily divided into four equal groups (n=10) according to the extrusion force magnitude and dispensing technique as follows: Group I (Control), manual extrusion force (FM), Group II: low extrusion force (F1) of sonic energy, Group III: medium extrusion force (F3) of sonic energy and Group IV: high extrusion force (F5) of sonic energy. Composite resins were packed inside the prepared cavities and photopolymerized. For groups II, III, and IV, a Sonic Fill handpiece was used to deliver sonic energy. While for group I, no sonic energy was used. All specimens were thermocycled, gold-sputtered, and examined under a scanning electron microscope for marginal seal assessment. Statistical analysis was done using Kruskall-Wallis and Mann-Whitney tests, with a significance level of P ≤ 0.05. Results: Group I showed higher marginal gaps (1.70±0.67) compared to sonic-activated groups (p<0.05). Marginal gaps of group II (1.0 ± 0.82) were nearly similar to that of group III (0.80±0.79) (p>0.05), while group IV (0.20 ± 0.42) revealed a significant decrease in the marginal gaps to that of group II and III (p<0.05). Conclusions: Using the Sonic Fill handpiece at the highest extrusion force enhances the marginal sealing of SonicFill 2 composite resin restorations compared to the medium and lowest extrusion forces.
目的：评估在 V 级修复体中使用不同涂布率的声波活化复合树脂的边缘封闭效果。材料和方法：对 40 颗拔出的健全人类臼齿进行标准化 V 级龋洞修复，根据挤出力大小和点胶技术将其任意分为以下四组（n=10）：第一组（对照组），手动挤出力（FM）；第二组：低挤出力（F1）；第三组：中等挤出力（F3）；第四组：高挤出力（F5）。将复合树脂装入制备好的空腔并进行光聚合。第二、三、四组使用声波填充手机提供声波能量。第一组不使用声波能量。所有试样都经过热循环、金溅射，并在扫描电子显微镜下进行边缘封闭评估。统计分析采用 Kruskall-Wallis 和 Mann-Whitney 检验，显著性水平为 P≤ 0.05。结果：第一组的边缘间隙（1.70±0.67）高于声波激活组（P0.05），而第四组的边缘间隙（0.20±0.42）明显低于第二组和第三组（P<0.05）。结论与中等挤出力和最低挤出力相比，使用最高挤出力的声波填充手机可提高 SonicFill 2 复合树脂修复体的边缘封闭性。
{"title":"Marginal Seal of Sonic-activated Composite resin Restorations Using Different Dispensing Rates","authors":"Al-Zahraa Mohamed El-Marhomy, A. Nassar","doi":"10.21608/edj.2024.287985.3031","DOIUrl":"https://doi.org/10.21608/edj.2024.287985.3031","url":null,"abstract":"Aim: To evaluate the marginal seal of sonic-activated composite resin using various dispensing rates in class V restorations. Materials and methods: Standardized class V cavities were performed in forty extracted sound human molars that were arbitrarily divided into four equal groups (n=10) according to the extrusion force magnitude and dispensing technique as follows: Group I (Control), manual extrusion force (FM), Group II: low extrusion force (F1) of sonic energy, Group III: medium extrusion force (F3) of sonic energy and Group IV: high extrusion force (F5) of sonic energy. Composite resins were packed inside the prepared cavities and photopolymerized. For groups II, III, and IV, a Sonic Fill handpiece was used to deliver sonic energy. While for group I, no sonic energy was used. All specimens were thermocycled, gold-sputtered, and examined under a scanning electron microscope for marginal seal assessment. Statistical analysis was done using Kruskall-Wallis and Mann-Whitney tests, with a significance level of P ≤ 0.05. Results: Group I showed higher marginal gaps (1.70±0.67) compared to sonic-activated groups (p<0.05). Marginal gaps of group II (1.0 ± 0.82) were nearly similar to that of group III (0.80±0.79) (p>0.05), while group IV (0.20 ± 0.42) revealed a significant decrease in the marginal gaps to that of group II and III (p<0.05). Conclusions: Using the Sonic Fill handpiece at the highest extrusion force enhances the marginal sealing of SonicFill 2 composite resin restorations compared to the medium and lowest extrusion forces.","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":"141703153","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.2024.265506.2909
Somaya M Salawat, Eman Mohammed Hassan
Aim: The aim of the current study to establish the effect of Bisphosphonate on Teeth Enamel and Dentin Formation in Both Normal and Osteoporotic Albino Rats. Materials and Methods: This study was included 4 groups of newborn rats, these groups were divided as follow: Group I (negative control), Group II (positive control), Group III (Bisphosphonate group), Group IV (Betamethasone & Bisphosphonate). The numbers of rats in each group were ten rats so the total numbers of rats were forty newborn rats with their average weight 5 grams then according to the date of euthanization of the rats at 10, 20 days; each group was divided into two subgroups. Injection of drugs in the dorsal back of rats were made. The specimens were processed for histological, histomorphometry and statistical analysis. Results: Betamethasone (Group II) made over the developing molar teeth bone resorption but made increasing the thickness of enamel and dentin while Bisphosphonate (group III) made disorientation of odontoblastic layer and decreased the thickness of the mineralized dentin. Dental follicle of the 1st molar appeared discontinuous because it was invaded by bone spicules that reached dental organ at some points at the occlusal portion made deformity of enamel matrix and decreased the thickness of the enamel. In group IV: Both drugs made very thin layer of enamel but made little effect on dentin thickness Conclusion: Betamethasone decreased dentin mineralization but increased its thickness and also decreased the mineralization of ename while Bisphosphonate decreased dentin mineralization and made distortion of odontoblastic layer inside pulp but made more increasing in its thickness.
{"title":"The Potential Effect of Bisphosphonate on Teeth Enamel and Dentin Formation in Both Normal and Osteoporotic Albino Rats","authors":"Somaya M Salawat, Eman Mohammed Hassan","doi":"10.21608/edj.2024.265506.2909","DOIUrl":"https://doi.org/10.21608/edj.2024.265506.2909","url":null,"abstract":"Aim: The aim of the current study to establish the effect of Bisphosphonate on Teeth Enamel and Dentin Formation in Both Normal and Osteoporotic Albino Rats. Materials and Methods: This study was included 4 groups of newborn rats, these groups were divided as follow: Group I (negative control), Group II (positive control), Group III (Bisphosphonate group), Group IV (Betamethasone & Bisphosphonate). The numbers of rats in each group were ten rats so the total numbers of rats were forty newborn rats with their average weight 5 grams then according to the date of euthanization of the rats at 10, 20 days; each group was divided into two subgroups. Injection of drugs in the dorsal back of rats were made. The specimens were processed for histological, histomorphometry and statistical analysis. Results: Betamethasone (Group II) made over the developing molar teeth bone resorption but made increasing the thickness of enamel and dentin while Bisphosphonate (group III) made disorientation of odontoblastic layer and decreased the thickness of the mineralized dentin. Dental follicle of the 1st molar appeared discontinuous because it was invaded by bone spicules that reached dental organ at some points at the occlusal portion made deformity of enamel matrix and decreased the thickness of the enamel. In group IV: Both drugs made very thin layer of enamel but made little effect on dentin thickness Conclusion: Betamethasone decreased dentin mineralization but increased its thickness and also decreased the mineralization of ename while Bisphosphonate decreased dentin mineralization and made distortion of odontoblastic layer inside pulp but made more increasing in its thickness.","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":"141705087","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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