Al-Azhar Assiut Dental Journal最新文献_第3页

Microleakage at Occlusal Margins Versus Cervical Margins of Thermocycled Preheated Class V Resin Composite Restorations 热循环预热V类树脂复合修复体牙合缘与颈缘微渗漏的比较

Al-Azhar Assiut Dental Journal Pub Date : 2023-04-01 DOI: 10.21608/aadj.2023.296430

A. Goda, Aly Sayed, Dina Ezz

{"title":"Microleakage at Occlusal Margins Versus Cervical Margins of Thermocycled Preheated Class V Resin Composite Restorations","authors":"A. Goda, Aly Sayed, Dina Ezz","doi":"10.21608/aadj.2023.296430","DOIUrl":"https://doi.org/10.21608/aadj.2023.296430","url":null,"abstract":"Aim: to quantify the effect of presence of enamel wall and thermocycling on marginal microleakage of class V cavities restored with preheated bulk-fill or preheated nano-filled composite. Methods: Class V cavities were prepared on the buccal surface of forty-eight extracted maxillary first premolars. The teeth were divided into two groups according to the type of preheated composite used (either bulk-fill or Nano-filled) and further subdivided according to thermocycling or no thermocycling. The teeth were immersed in 0.5% methylene blue dye solution for 24 hours at room temperature and then sectioned buccolingually to examine the extent of microleakage by dye penetration. Microleakage was assessed by a stereomicroscope at 40x magnification and measured in micrometers depending on the extent of dye penetration for both occlusal and gingival walls separately. Statistical analysis was done by Kruskal-Wallis test for comparison between groups and Mann-Whitney test for comparing occlusal and gingival dye penetration in each group. Results: preheated Nano-filled composite subjected to thermocycling showed more significantly microleakage than other groups (P < 0.05). Microleakage was significantly more (P < 0.05) in gingival (cervical) walls of teeth compared to occlusal walls in all groups except preheated Nano-filled composite directed to thermocycling which showed no significant difference between gingival and occlusal walls (P > 0.05). Conclusions: thermocycling of preheated Nano-filled composite produced more microleakage than thermocycling of preheated bulk-filled composite. More microleakage was recorded in cervical areas than occlusal areas of class V cavities.","PeriodicalId":136230,"journal":{"name":"Al-Azhar Assiut Dental Journal","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134139886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Measurement of Interleukin-1β Level in Gingival Crevicular Fluid in Periodontitis Patients Treated by Non-Surgical Periodontal Therapy Combined with Topical Application of Melatonin Gel 非手术牙周治疗联合局部应用褪黑素凝胶治疗牙周炎患者龈沟液中白细胞介素-1β水平的测定

Al-Azhar Assiut Dental Journal Pub Date : 2023-04-01 DOI: 10.21608/aadj.2023.296420

I. Ibrahim, Ahmed Ali, K. Afify, B. Badr

{"title":"Measurement of Interleukin-1β Level in Gingival Crevicular Fluid in Periodontitis Patients Treated by Non-Surgical Periodontal Therapy Combined with Topical Application of Melatonin Gel","authors":"I. Ibrahim, Ahmed Ali, K. Afify, B. Badr","doi":"10.21608/aadj.2023.296420","DOIUrl":"https://doi.org/10.21608/aadj.2023.296420","url":null,"abstract":"Aim: The present study was performed to evaluate the efficacy of topical application of melatonin gel on clinical parameter and biochemical level of IL-1-β in gingival crevicular fluid in patients with periodontitis treated by non-surgical periodontal therapy. Subjects and methods: In this study, forty periodontitis patients with stage І, П grade A, were divided randomly into two groups: Group І: Twenty periodontitis patients with stage І, II grade A treated with conventional periodontal treatment (scaling and root planing) combined with intra pocket application of 2% melatonin gel. Group П: Twenty periodontitis patients with stage І,II grade A treated with conventional periodontal treatment alone (scaling and root planing). All patients were evaluated clinically at; base line and after 3 and 6 months. Also, biochemical evaluation of IL-1β using ELISSA at; base line and after 2 weeks, 1and 3 months. Results of the present study were recorded, tabulated and statistically analyzed. Results: clinical findings showed a statistically significant difference in all groups at the different intervals when compared to the baseline, biochemical evaluation of IL-1β was a statistically significant difference between group I and group II at 2 weeks and after 1 month only during the period of application. Conclusion: Adjunctive use of topically applied melatonin gel 2% appeared to be has beneficial effect on both clinical and biochemical parameters in patients with stage І, П, grade A periodontitis, with a statistically significant difference between group I and group II at 2 weeks and after 1 month of treatment (during the period of melatonin application) however, this effect is not significant when compared with scaling and root planning alone after 3 months of treatment","PeriodicalId":136230,"journal":{"name":"Al-Azhar Assiut Dental Journal","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116792674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Apical Revascularization of Necrotic Young Permanent Teeth by Different Methods 不同方法对坏死恒牙根尖血管重建的影响

Al-Azhar Assiut Dental Journal Pub Date : 2023-04-01 DOI: 10.21608/aadj.2023.296423

Wael Abdalkhalek

{"title":"Apical Revascularization of Necrotic Young Permanent Teeth by Different Methods","authors":"Wael Abdalkhalek","doi":"10.21608/aadj.2023.296423","DOIUrl":"https://doi.org/10.21608/aadj.2023.296423","url":null,"abstract":"Aim: to evaluate effect of Biodentine and MTA on the root length, root dentin thickness and apical diameter after revascularization in necrotic immature permanent teeth. Subjects and methods: 20 upper anterior teeth showed immature roots with an open apex, ranging in age from 9 to 12 years. Revascularization treatment was done, which was started with disinfection of the canals (sodium hypochlorite irrigation, followed by triple antibiotic paste for 2- 3 weeks). Next, the triple antibiotic paste was removed by irrigation with saline, The teeth were divided into two groups 10 each Group A: revitalization using blood clot scaffold only, and Group B: revitalization using blood clot and platelet rich fibrin (PRF). Each group was subdivided into two subgroups according to the material placed over the root canal orifice and a coronal seal of glass ionomer. Follow-up was done for 6 months. Standardized radiographs were analyzed for the peri-radicular healing and apical closure.. Results: There was significant decrease in the mean apical diameter along the follow up periods. No significant differences were shown between all groups. Conclusion: Clinical and radiographic evidence showed, revascularization procedure could be an alternative treatment in immature nonvital teeth. In addition, placing Biodentine and MTA cement provided a good seal and favorable outcomes.","PeriodicalId":136230,"journal":{"name":"Al-Azhar Assiut Dental Journal","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125878087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of TITACH Attachment on the Retention for Mandibular Implant Overdentures TITACH附着体对下颌种植覆盖义齿固位的影响

Al-Azhar Assiut Dental Journal Pub Date : 2023-04-01 DOI: 10.21608/aadj.2023.296414

Mohamed Eladrosi, Heba Abozaed, M. Elsyad

{"title":"Impact of TITACH Attachment on the Retention for Mandibular Implant Overdentures","authors":"Mohamed Eladrosi, Heba Abozaed, M. Elsyad","doi":"10.21608/aadj.2023.296414","DOIUrl":"https://doi.org/10.21608/aadj.2023.296414","url":null,"abstract":"Aims: This clinical study aimed to evaluate the impact of TITACH attachment on the retention for mandibular implant overdenture . Subjects and Methods: Eight edentate’s patients were eligible for this current work. All participants were received complete maxillary and mandibular dentures. Two dental implants were surgically inserted bilaterally in mandibular canine region. After 3 months of Osseo-integration, dental implants were exposed, healing abutments were screwed. According to techniques of TITACH incorporation to overdenture, patients were divided into two equal groups, Group I: 4 patients received mandibular implant overdenture that retained by direct incorporation of TITACH attachment. Group II: 4 patients received mandibular implant overdenture that retained by TITACH attachment with indirect incorporation technique. Retention was evaluated by digital force-meter. This evaluation was performed after 1 week of overdenture delivery (T0) and 6 months after overdenture delivery (6). The average retention was analyzed. The two groups were compared with independent t-test while paired groups were compared by paired t-test Results: Retentive forces of both incorporation techniques of TITACH attachment at different evaluation times revealed that, statistically significant difference in retentive forces at different evaluation times. On the other hand, there was statistically insignificant difference when group I and II were compared at different evaluation times. Conclusion: The TITACH attachment group showed favorable retentive force with 2 different incorporation techniques. The TITACH attachment could be a suitable choice when increased retention is required. However, the TITACH attachment showed high percentage change in retentive force but still accepted in both direct and indirect techniques.","PeriodicalId":136230,"journal":{"name":"Al-Azhar Assiut Dental Journal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132623195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of The Effect of Self- Ligating Bracket and Conventional Bracket Systems on The Arch Width And Buccal Corridor Changes (Clinical Comparative Study) 自结扎托槽与常规托槽系统对牙弓宽度及颊道改变的影响(临床比较研究)

Al-Azhar Assiut Dental Journal Pub Date : 2023-04-01 DOI: 10.21608/aadj.2023.296428

M. Farouk, M. Salim, Usama Hemdan

{"title":"Evaluation of The Effect of Self- Ligating Bracket and Conventional Bracket Systems on The Arch Width And Buccal Corridor Changes (Clinical Comparative Study)","authors":"M. Farouk, M. Salim, Usama Hemdan","doi":"10.21608/aadj.2023.296428","DOIUrl":"https://doi.org/10.21608/aadj.2023.296428","url":null,"abstract":"Aim: To evaluate the effect of self-ligating and conventional bracket systems on buccal corridor widths and areas Subjects and Methods : 20 participants were recruited for each bracket system. Pretreatment and post treatment frontal photographs were transferred to Photoshop CC, standardized using inter-canthal width and linear and area measurements were performed with tools in Photoshop CC. Ratios was then calculated for statistical analysis. Relationships between arch widths and buccal corridors were also examined. Results: There were no significant differences in the posttreatment intercanine or intermolar widths either within or between the CG and SL groups. There were no significant differences in any buccal corridor width or area measurement either within or between the CG and SL groups. There were strong correlations with the intercanine width and the corresponding buccal corridor smile width measurements. There was an inverse correlation with the buccal corridor area in relation to the canine and the total smile width. Conclusion: It is likely that posttreatment increases in arch width can be seen in patients treated with either a conventional bracket system or the self-ligating system. It is highly unlikely that there is any significant difference in buccal corridor width or area in patients treated with the self-ligating system or a conventional bracket system.","PeriodicalId":136230,"journal":{"name":"Al-Azhar Assiut Dental Journal","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127342609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Clinical and Antimicrobial Efficacy of Garlic Extract and Formcresol as a Non-vital Pulp Therapy Medicament in Primary Teeth Wael Mahmoud 大蒜提取物和甲甲酚作为乳牙非生命牙髓治疗药物的临床及抗菌效果

Al-Azhar Assiut Dental Journal Pub Date : 2023-04-01 DOI: 10.21608/aadj.2023.296424

Wael Abdalkhalek

{"title":"Clinical and Antimicrobial Efficacy of Garlic Extract and Formcresol as a Non-vital Pulp Therapy Medicament in Primary Teeth Wael Mahmoud","authors":"Wael Abdalkhalek","doi":"10.21608/aadj.2023.296424","DOIUrl":"https://doi.org/10.21608/aadj.2023.296424","url":null,"abstract":"Aim: aim of the present study was to evaluate and compare the clinical and antimicrobial efficacy of garlic extract and formcresol as a non-vital pulp therapy medicament in primary teeth. Subjects and methods: The clinical study was conducted on 30 children of both sexes between the ages of 4 and 7 year. A total of 60 non-vital bilateral primary mandibular molars (first&second) were selected for nonvital (mortal) pulpotomy procedures at two visits: 7 days apart. Treated teeth are classified into two groups according to the drugs used in the treatment. The first group (control group) was dressed with formocrysol, while the second group (study group) was dressed with garlic extract (GE). Microbiological samples were collected from each of the 60 specimens before treatment and 7 days later. Results: The results showed that pain disappeared in both groups significantly, with success rates of 95.2% and 95.6%, respectively. Other indicators were assessed with a 100% success rate of swelling and mobility for both groups. Conclusion: Clinical and microbiological analysis of this study revealed that there are potential natural alternative medicaments (GE) for formacresol, which can be considered equally effective.","PeriodicalId":136230,"journal":{"name":"Al-Azhar Assiut Dental Journal","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124314945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of the Effect of Topically Applied Probiotics on Interleukin-10 and Osteoprotegerin as an Adjunctive Treatment of Stage І and П Grade A Periodontitis Cases 局部应用益生菌辅助治疗І期和П级牙周炎对白细胞介素-10和骨保护素的影响

Al-Azhar Assiut Dental Journal Pub Date : 2023-04-01 DOI: 10.21608/aadj.2023.296421

M. Edrees, H. Nasr, Ibraheem Mowafy, A. Bakry

{"title":"Evaluation of the Effect of Topically Applied Probiotics on Interleukin-10 and Osteoprotegerin as an Adjunctive Treatment of Stage І and П Grade A Periodontitis Cases","authors":"M. Edrees, H. Nasr, Ibraheem Mowafy, A. Bakry","doi":"10.21608/aadj.2023.296421","DOIUrl":"https://doi.org/10.21608/aadj.2023.296421","url":null,"abstract":"Aim: the use of probiotic gel may be considered as beneficial treatment for periodontitis. This study was directed to evaluate the possible effect of topically applied probiotics on Interleukin-10 (IL-10) and osteoprotegerin (OPG) combined with scaling and root planning (SRP) in treatment of stage І and П grade A periodontitis. Subjects and Methods: 18 female patients were divided randomly into two equal groups. Group I (PG): received SRP combined with topically applied probiotics gel. Group II(CG): received SRP only. All patients were received phase I periodontal therapy. Then all patients were evaluated clinically and biochemically at base line, one month and three months after periodontal therapy Results recorded, tabulated and statistically analyzed using SPSS (statistical package for social sciences). Results: Clinical parameters such as plaque index (PI), gingival index (GI), probing pocket depth (PPD) and clinical attachment level (CAL) were evaluated. In all groups there was a significant reduction regarding the clinical parameters. There was insignificant better results regarding PI and GI in group I. while, there was significant better results regarding PPD and CAL in group I than group II. OPG levels showed insignificant better results in PG than CG but IL-10 levels showed significant better results in PG over time than CG. Conclusion: Adjunctive topically applied probiotic gel exhibited anti inflammatory effect through the significant expression of IL-10 after treatment of stage I and II grade A periodontitis patients. On the other hand seemed to be non significantly improve the bone formation through the limited expression of OPG","PeriodicalId":136230,"journal":{"name":"Al-Azhar Assiut Dental Journal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120935224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Different Materials and Techniques Used for Repairing of Digital Denture Base 义齿基托修复不同材料与技术的评价

Al-Azhar Assiut Dental Journal Pub Date : 2023-04-01 DOI: 10.21608/aadj.2023.296411

Mohamed Aboshama, Eslam AbdElhady, M. Hammas

{"title":"Evaluation of Different Materials and Techniques Used for Repairing of Digital Denture Base","authors":"Mohamed Aboshama, Eslam AbdElhady, M. Hammas","doi":"10.21608/aadj.2023.296411","DOIUrl":"https://doi.org/10.21608/aadj.2023.296411","url":null,"abstract":"Aim: to assess the effect of different materials and techniques of surface treatment on the flexural strength of repaired 3D-printed denture base. Subjects and Methods: A total of 150 specimens were printed on a 3D printer in a rectangular shape in dimensions 65×10×2mm. The flexural specimens were 10 groups (n=15). Each specimen was sectioned in the middle into two halves. Group 1 (control), the first three groups repaired with 3D denture base resin using surface treatment of Monomer, Sandblasting, and a combination of both respectively. The second three groups repaired with heat-polymerized polymethyl methacrylate (HPA) using surface treatment of Monomer, Sandblasting, and a combination of both respectively. And last three groups repaired with Auto-polymerized polymethyl methacrylate (APA) using surface treatment of Monomer, Sandblasting, and a combination of both respectively. The flexural strength was measured using a universal testing machine. Statistical analysis was done using one-way ANOVA test and Tukey’s post-hoc test (α=.05). Results: The groups repaired with 3D denture base resin was significantly the highest mean flexural strength. Mechanical surface treatment was significantly the highest mean flexural strength in every repaired material. Conclusions: The 3D denture base resin is the material of choice for repairing fractured 3D dentures followed by (HPA) and then (APA). Mechanical surface treatment is recommended for repairing 3D dentures.","PeriodicalId":136230,"journal":{"name":"Al-Azhar Assiut Dental Journal","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134358289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Clinical Comparative Study of Retention for Single Versus Two- Implant Mandibular Overdentures Reinforced by PEEK Framework PEEK框架加固单种植体与双种植体下颌覆盖义齿固位的临床比较研究

Al-Azhar Assiut Dental Journal Pub Date : 2023-04-01 DOI: 10.21608/aadj.2023.296417

Heba Abozaed

{"title":"Clinical Comparative Study of Retention for Single Versus Two- Implant Mandibular Overdentures Reinforced by PEEK Framework","authors":"Heba Abozaed","doi":"10.21608/aadj.2023.296417","DOIUrl":"https://doi.org/10.21608/aadj.2023.296417","url":null,"abstract":"Aim: This clinical work aimed to evaluate and compare retention force of single versus 2-implants mandibular overdentures reinforced by poly ether-ether ketone (PEEK)framework. Subjects and methods: sixteen completely edentulous participants were eligible for this study. Patients were randomly divided into two equal groups, for group I single implant was inserted in mandibular midline area, single ball abutment was threaded in place, each patient receive mandibular overdenture reinforced with PEEK framework. In group II, insertion of 2-implants in the mandibular canine region, two ball abutments were threaded in place, each patient receives mandibular overdenture reinforced with PEEK framework. The evaluation of retention was performed using digital force-meter device at time of overdenture insertion (T0) & three months later (T3). Both groups were compared with independent t- test. Results: at time of mandibular overdenture insertion (T0), two groups were recorded significant difference in retention forces. 2-implants with PEEK framework recorded higher retention forces compared to single-implant with PEEK framework (P value≤0.001). Significant difference in retention forces was recorded after 3 months between two different groups (P value≤0.001). Within group when compared mean retention values at (T0, T3) showed insignificant difference as in group I (P value 0.058) & in group II (P value 0.148). Conclusion: both single and 2-implants mandibular overdentures reinforced with PEEK framework can provide acceptable retention forces. Two-implant mandibular overdentures provide higher retention forces than single-implant mandibular overdentures during different evaluation periods.","PeriodicalId":136230,"journal":{"name":"Al-Azhar Assiut Dental Journal","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115548954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Micro-Tensile Bond Strength of A New Resin Composite Restorative Material at Two Different Dentin Depth After Aging (An In-Vitro Study) 一种新型树脂复合修复材料在两种牙本质深度老化后的微拉伸粘结强度评价(体外研究)

Al-Azhar Assiut Dental Journal Pub Date : 2023-04-01 DOI: 10.21608/aadj.2023.296425

N. Mahmoud

{"title":"Evaluation of Micro-Tensile Bond Strength of A New Resin Composite Restorative Material at Two Different Dentin Depth After Aging (An In-Vitro Study)","authors":"N. Mahmoud","doi":"10.21608/aadj.2023.296425","DOIUrl":"https://doi.org/10.21608/aadj.2023.296425","url":null,"abstract":"Aim: Evaluation of micro-tensile bond strength of new resin composite restorative material to dentin at two different levels of dentin and after aging. Subjects and Methods : Twenty healthy human molar teeth were selected for the study. Flat preparation was done below the DEJ by 0.5mm. (superficial dentin)), and below the DEJ by 1.5 mm. (deep dentin), all teeth restored with (Estelite sigma quick) resin composite. The teeth were divided into four equal groups: group ST1(prepared in superficial dentin level (0.5mm below DEJ) and subjected to cyclic loading fatigue represented 24 hours), group ST2 (prepared in superficial dentin level (0.5mm below DEJ) and subjected to cyclic loading fatigue represented 6 months), group DT1 (prepared in deep dentin level (1.5mm below DEJ) and subjected to cyclic loading fatigue represented 24 hours), and group DT2 (prepared in deep dentin level (1.5mm below DEJ) and subjected to cyclic loading fatigue represented 6 months). Teeth were then sectioned in a mesiodistal and bucco-lingual to obtain beams. Micro-tensile bond strength was measured using universal testing machine. Statistical analysis was performed using Graph pad Instat (Graph pad,Inc); Software for windows. Results: There was a statistically significant difference between the four tested groups, The highest mean value of (MPa) recorded in groups prepared in the superficial dentin level (ST1) group followed by (ST2) group, The data showed there was a statistically significant difference between groups subjected to different cyclic loading time. Conclusion : Estelite sigma quick resin composite has good bond strength especially at superficial dentin depth.","PeriodicalId":136230,"journal":{"name":"Al-Azhar Assiut Dental Journal","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125934392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0