Pub Date : 2022-07-01DOI: 10.21608/adjg.2022.76142.1378
H. Ibrahim, M. Khalifa, Heba Abdelkafy
Purpose: The aim of this study was to evaluate canal transportation and centering ability ratio of 2 single Ni-Ti instruments; one shape and wave one gold using Cone Beam Computed Tomography scanning (CBCTs). Materials and Methods: Forty mesiobuccal canals of human mandibular first molars with a curvature angle that ranges from 15° to 35° were divided into 2 groups based on the type of instrument used to prepare the canal. Group I: instrumented with one shape and Group II: instrumented with Wave One Gold. Pre and post preparation, canals were scanned using CBCT scanner to evaluate the amount of canal transportation and centering ability ratio at coronal, middle, and apical parts of root canal system. Results: There was no statistical significance difference between the two tested groups (P<0.05) in canal transportation and centering ability. C onclusion: Both one shape and wave one gold systems preserving the canal’s original form.
{"title":"Evaluation of Canal Transportation and Centering Ability of Curved Canal Prepared by Two Rotary Systems","authors":"H. Ibrahim, M. Khalifa, Heba Abdelkafy","doi":"10.21608/adjg.2022.76142.1378","DOIUrl":"https://doi.org/10.21608/adjg.2022.76142.1378","url":null,"abstract":"Purpose: The aim of this study was to evaluate canal transportation and centering ability ratio of 2 single Ni-Ti instruments; one shape and wave one gold using Cone Beam Computed Tomography scanning (CBCTs). Materials and Methods: Forty mesiobuccal canals of human mandibular first molars with a curvature angle that ranges from 15° to 35° were divided into 2 groups based on the type of instrument used to prepare the canal. Group I: instrumented with one shape and Group II: instrumented with Wave One Gold. Pre and post preparation, canals were scanned using CBCT scanner to evaluate the amount of canal transportation and centering ability ratio at coronal, middle, and apical parts of root canal system. Results: There was no statistical significance difference between the two tested groups (P<0.05) in canal transportation and centering ability. C onclusion: Both one shape and wave one gold systems preserving the canal’s original form.","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74571722","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 : 2022-07-01DOI: 10.21608/adjg.2022.73553.1355
Mona Amer, M. Elhindawy, A. Zaher
Purpose : This study was carried out in order to assess the effect of 10% PRF exudate obtained from controlled type 2 diabetic patients on proliferation capacity of dental pulp stem cells (DPSCs). Then 1% PRF exudate obtained from controlled type 2 diabetic patients was tested for osteogenic capability after 1 week. Material and methods: PRF exudates were prepared using the direct method from 8 healthy donors (control group) and 8 controlled type 2 diabetic patients (study group). In 96-well plates, DPSCs harvested from pulp tissue of impacted lower third molar were treated with 10% PRF exudate obtained from healthy donors and controlled type 2 diabetic patients for 1,3 and 5 days. The effects of exudates on proliferation and cell viability were tested using the MTS assay. For osteogenic capability, DPSCs were treated with 1%PRF exudate obtained from healthy donors and controlled type 2 diabetic patients supplemented with osteogenic medium for 1week and the osteodifferentiation assay was held using alizarin red stain with ELIZA reader. All data were subjected into one-way Anova statistical analysis. Results: The concentrations of 10% and 1% PRF exudates obtained from controlled type 2 diabetic patients had proliferative and osteoinductive effects on DPSCs comparable to that of the healthy individuals. Conclusion: Based on our study, controlled type 2 diabetic patients can be treated similar to their Unaffected peers using 10% PRF exudates as the optimal concentration for DPSCs proliferation and 1% PRF exudates as the optimal concentration for DPSCs osteodifferentiation and formation of mineralized nodules in 7 days. which chronic hyperglycemia is the core finding. Either defect in insulin secretion or defect in insulin action or both are
{"title":"Possible Proliferative Impact of Human Platelet-Rich Fibrin Obtained From Controlled Type 2 Diabetic Patients on Human Dental Pulp Stem Cells (In Vitro Study)","authors":"Mona Amer, M. Elhindawy, A. Zaher","doi":"10.21608/adjg.2022.73553.1355","DOIUrl":"https://doi.org/10.21608/adjg.2022.73553.1355","url":null,"abstract":"Purpose : This study was carried out in order to assess the effect of 10% PRF exudate obtained from controlled type 2 diabetic patients on proliferation capacity of dental pulp stem cells (DPSCs). Then 1% PRF exudate obtained from controlled type 2 diabetic patients was tested for osteogenic capability after 1 week. Material and methods: PRF exudates were prepared using the direct method from 8 healthy donors (control group) and 8 controlled type 2 diabetic patients (study group). In 96-well plates, DPSCs harvested from pulp tissue of impacted lower third molar were treated with 10% PRF exudate obtained from healthy donors and controlled type 2 diabetic patients for 1,3 and 5 days. The effects of exudates on proliferation and cell viability were tested using the MTS assay. For osteogenic capability, DPSCs were treated with 1%PRF exudate obtained from healthy donors and controlled type 2 diabetic patients supplemented with osteogenic medium for 1week and the osteodifferentiation assay was held using alizarin red stain with ELIZA reader. All data were subjected into one-way Anova statistical analysis. Results: The concentrations of 10% and 1% PRF exudates obtained from controlled type 2 diabetic patients had proliferative and osteoinductive effects on DPSCs comparable to that of the healthy individuals. Conclusion: Based on our study, controlled type 2 diabetic patients can be treated similar to their Unaffected peers using 10% PRF exudates as the optimal concentration for DPSCs proliferation and 1% PRF exudates as the optimal concentration for DPSCs osteodifferentiation and formation of mineralized nodules in 7 days. which chronic hyperglycemia is the core finding. Either defect in insulin secretion or defect in insulin action or both are","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74953580","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 : 2022-07-01DOI: 10.21608/adjg.2022.76299.1391
Horia Elsherif, S. Saniour, I. Motawea, H. Essawy, Mostafa Abd El-Gany, D. Zaki
Purpose: The aim of this study was to prepare and characterize poly methyl methacrylate (PMMA) composite bone cement filled with montmorillonite (MMT) and loaded with silver nanoparticles (AgNPs). Materials and methods: AgNPs were synthesized by the chemical reducing method. Characterization was done using Field emission scanning electron microscope (FE-SEM), X-ray diffraction analysis (XRD) and Thermogravimetric analysis (TGA). Two and four weight percentages of MMT powder and the prepared MMT/AgNPs powder were added to the bone cement. A total of 75 PMMA bone cement specimens were prepared and divided into 5 groups (control group, PMMT/MMT 2%, PMMT/MMT 4%, PMMT/MMTAgNps 2% and PMMT/MMTAgNps 4%). Then they were tested regarding the compressive strength, flexural strength and antibacterial activity. Results: SEM images showed the layered MMT with light spots indicating presence of AgNPs that was confirmed by XRD; while TGA showed its thermal stability. Compressive strength results revealed statistically insignificant difference between the control and the tested groups while the 4% PMMA/MMT showed statistically significant higher values than the 2%. Statistically insignificant difference in flexural strength results were found between the 2% and 4% concentrations within the PMMA/ MMT/AgNPs group, and within the PMMA/MMT group. Antibacterial results revealed statistical significant differences in all the tested groups (p<0.001). Conclusion: MMT could be used as a controlled delivery system to hold AgNPs that proved to have antibacterial effect when added to PMMA cement. Addition of 4% MMT to PMMA bone cement improved its compressive strength.
{"title":"Preparation, Characterization and Evaluation of a Poly Methyl Methacrylate Bone Cement Modified by Montmorillonite Loaded with Silver Nano Particles","authors":"Horia Elsherif, S. Saniour, I. Motawea, H. Essawy, Mostafa Abd El-Gany, D. Zaki","doi":"10.21608/adjg.2022.76299.1391","DOIUrl":"https://doi.org/10.21608/adjg.2022.76299.1391","url":null,"abstract":"Purpose: The aim of this study was to prepare and characterize poly methyl methacrylate (PMMA) composite bone cement filled with montmorillonite (MMT) and loaded with silver nanoparticles (AgNPs). Materials and methods: AgNPs were synthesized by the chemical reducing method. Characterization was done using Field emission scanning electron microscope (FE-SEM), X-ray diffraction analysis (XRD) and Thermogravimetric analysis (TGA). Two and four weight percentages of MMT powder and the prepared MMT/AgNPs powder were added to the bone cement. A total of 75 PMMA bone cement specimens were prepared and divided into 5 groups (control group, PMMT/MMT 2%, PMMT/MMT 4%, PMMT/MMTAgNps 2% and PMMT/MMTAgNps 4%). Then they were tested regarding the compressive strength, flexural strength and antibacterial activity. Results: SEM images showed the layered MMT with light spots indicating presence of AgNPs that was confirmed by XRD; while TGA showed its thermal stability. Compressive strength results revealed statistically insignificant difference between the control and the tested groups while the 4% PMMA/MMT showed statistically significant higher values than the 2%. Statistically insignificant difference in flexural strength results were found between the 2% and 4% concentrations within the PMMA/ MMT/AgNPs group, and within the PMMA/MMT group. Antibacterial results revealed statistical significant differences in all the tested groups (p<0.001). Conclusion: MMT could be used as a controlled delivery system to hold AgNPs that proved to have antibacterial effect when added to PMMA cement. Addition of 4% MMT to PMMA bone cement improved its compressive strength.","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"108 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88779687","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 : 2022-07-01DOI: 10.21608/adjg.2022.136422.1500
Asmaa Abdelmawgoud, Mervat I. Fawzy, Maha Elhousiny, M. Abdel-Aziz
Purpose: This study evaluated the effectiveness of using EndoVac irrigation device on microbial reduction and postoperative pain in single rooted teeth with necrotic teeth and apical periodontitis after single visit treatment. Subjects and Methods: Thirty six single rooted teeth from patients of age range between 20 and 50 years old were involved in this study. According to irrigation procedures, patients were assigned randomly and equally into two groups of 18 teeth per group. Group I (conventional irrigation) and Group II (EndoVac irrigation). Irrigating solution for both groups was 2.5% sodium hypochlorite. All patients were treated in a single visit. The access cavity was prepared, and a microbiological sample (S1) was obtained. The root canal was chemomechanically prepared with ProTaper rotary instruments up to #F4. Finally, after irrigation activation, the second microbiological sample (S2) was collected. Samples were cultured on plates of nutrient agar, incubated for one day at thirty seven °C, and colony forming units (CFU) were counted and recorded. The primary outcome assessed microbial reduction in both groups. The pain was measured using a Numeric rating Scale (NRS) at 6, 12, 24, and 72 hours to determine the secondary outcome. Results: The mean percentage reduction in microbial count in Group II was statistically significantly higher than in Group I (P ≤ 0.05). Conventional group (G I) showed statistically significantly higher pain scores than EndoVac group (G II) (P ≤ 0.05). Conclusion: In necrotic teeth with apical periodontitis, EndoVac could be utilized as an adjunct to conventional root canal irrigation.
{"title":"Evaluation of Single Visit Endodontic Treatment Outcome in Teeth with Asymptomatic Necrotic Pulp and Apical Periodontitis Using EndoVac Irrigation Device: Randomized Controlled Clinical Trial","authors":"Asmaa Abdelmawgoud, Mervat I. Fawzy, Maha Elhousiny, M. Abdel-Aziz","doi":"10.21608/adjg.2022.136422.1500","DOIUrl":"https://doi.org/10.21608/adjg.2022.136422.1500","url":null,"abstract":"Purpose: This study evaluated the effectiveness of using EndoVac irrigation device on microbial reduction and postoperative pain in single rooted teeth with necrotic teeth and apical periodontitis after single visit treatment. Subjects and Methods: Thirty six single rooted teeth from patients of age range between 20 and 50 years old were involved in this study. According to irrigation procedures, patients were assigned randomly and equally into two groups of 18 teeth per group. Group I (conventional irrigation) and Group II (EndoVac irrigation). Irrigating solution for both groups was 2.5% sodium hypochlorite. All patients were treated in a single visit. The access cavity was prepared, and a microbiological sample (S1) was obtained. The root canal was chemomechanically prepared with ProTaper rotary instruments up to #F4. Finally, after irrigation activation, the second microbiological sample (S2) was collected. Samples were cultured on plates of nutrient agar, incubated for one day at thirty seven °C, and colony forming units (CFU) were counted and recorded. The primary outcome assessed microbial reduction in both groups. The pain was measured using a Numeric rating Scale (NRS) at 6, 12, 24, and 72 hours to determine the secondary outcome. Results: The mean percentage reduction in microbial count in Group II was statistically significantly higher than in Group I (P ≤ 0.05). Conventional group (G I) showed statistically significantly higher pain scores than EndoVac group (G II) (P ≤ 0.05). Conclusion: In necrotic teeth with apical periodontitis, EndoVac could be utilized as an adjunct to conventional root canal irrigation.","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73444980","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 : 2022-07-01DOI: 10.21608/adjg.2022.41679.1291
N. Mahmoud, Magda elmalt, Eman Mohamed
Purpose: To evaluate the erosive effect of pediatric liquid medicinal syrups on primary and permanent enamel. Materials and methods : Eighty primary and permanent teeth were equally divided into eight subgroups (n=10), according to the immersion solutions: Depakine, Ventolin, Sansovit, and Artificial saliva. The immersion cycles of the drugs were conducted under a 1-min agitation three times daily for 28 days. Enamel microhardness measurements were taken place at 0,7,14,21, and 28 days. The pH, titratable acidity, buffering capacity, and viscosity of the solutions were evaluated. A Scanning electron microscopy and statistical analysis of enamel microhardness measurements were assessed. Results: All the tested groups of the drugs had proven to produce significant demineralization of enamel after 28 days of exposure. At baseline, the permanent enamel showed higher mean enamel microhardness values than primary teeth. Generally with all the tested drugs, the primary teeth showed more decrease in enamel microhardness than permanent but without significance. The primary group (0-28days) , the highest decrease of enamel microhardness was recorded in Sansovit group, then Ventolin, followed by Depakine group without significant change between the tested drugs, while in the permanent group, the highest decrease of enamel microhardness was recorded in Sansovit, then Depakine, followed by Ventolin group without significant change between the tested drugs. Kruskall Wallis test revealed a significant difference between tested drugs and control groups in both substrates. Conclusion: This study revealed that medicines used in the study could erode teeth even though the pH was above critical pH if it had high sugar content and viscosity. Sugar-free formulations have the ability to produce an erosive effect if they have low pH, high titratable acidity, high buffering capacity, and viscosity. This study showed that permanent teeth had higher mean enamel microhardness values than primary teeth, however no significant difference in the erosive potential of both types of teeth.
{"title":"Evaluation of the Erosive Effect of Pediatric Liquid Medicinal Syrups on Primary and Permanent Enamel","authors":"N. Mahmoud, Magda elmalt, Eman Mohamed","doi":"10.21608/adjg.2022.41679.1291","DOIUrl":"https://doi.org/10.21608/adjg.2022.41679.1291","url":null,"abstract":"Purpose: To evaluate the erosive effect of pediatric liquid medicinal syrups on primary and permanent enamel. Materials and methods : Eighty primary and permanent teeth were equally divided into eight subgroups (n=10), according to the immersion solutions: Depakine, Ventolin, Sansovit, and Artificial saliva. The immersion cycles of the drugs were conducted under a 1-min agitation three times daily for 28 days. Enamel microhardness measurements were taken place at 0,7,14,21, and 28 days. The pH, titratable acidity, buffering capacity, and viscosity of the solutions were evaluated. A Scanning electron microscopy and statistical analysis of enamel microhardness measurements were assessed. Results: All the tested groups of the drugs had proven to produce significant demineralization of enamel after 28 days of exposure. At baseline, the permanent enamel showed higher mean enamel microhardness values than primary teeth. Generally with all the tested drugs, the primary teeth showed more decrease in enamel microhardness than permanent but without significance. The primary group (0-28days) , the highest decrease of enamel microhardness was recorded in Sansovit group, then Ventolin, followed by Depakine group without significant change between the tested drugs, while in the permanent group, the highest decrease of enamel microhardness was recorded in Sansovit, then Depakine, followed by Ventolin group without significant change between the tested drugs. Kruskall Wallis test revealed a significant difference between tested drugs and control groups in both substrates. Conclusion: This study revealed that medicines used in the study could erode teeth even though the pH was above critical pH if it had high sugar content and viscosity. Sugar-free formulations have the ability to produce an erosive effect if they have low pH, high titratable acidity, high buffering capacity, and viscosity. This study showed that permanent teeth had higher mean enamel microhardness values than primary teeth, however no significant difference in the erosive potential of both types of teeth.","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"326 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76363940","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 : 2022-07-01DOI: 10.21608/adjg.2022.63962.1341
Tayseer Maaly, Mahmoud El Homossany
Purpose: This study was conducted to evaluate the effect of different staining solutions on color stability and surface roughness (SR) of Nano hybrid composite and acrylic denture teeth. Materials and Methods: Fifty specimens divided into two main groups. Each group divided into 5 subgroups each of 5 specimens of acrylic and composite teeth were used in this test. Teeth were immersed in four coloring solutions in addition to distilled water. Color measurements were performed using spectrophotometer. Color change values were determined before and after immersion in the coloring solutions. The CIE L*a*b* color space was used to evaluate color differences. SR values were evaluated before and following the immersion in coloring solutions using a digital microscope. Results: Showed significant color changes of both types of artificial teeth materials upon immersion in tea, coffee, cola, licorice or distilled water. This color change was greater in case of tea and coffee solutions. The least color change values were obtained from specimens immersed in distilled water. SR values were increased for acrylic teeth compared with composite teeth and there were significant statistical differences in surface roughness of all tested materials after immersion in any of the tested solutions. Conclusions: The acrylic denture teeth material is much more subjected to discoloration than the composite denture teeth material. Surface roughness of all tested teeth of both types recorded statistically significant decrease by immersion in staining solutions.
{"title":"Color Stability of Nano hybrid Composite and Acrylic Denture Teeth Exposed to Different Coloring Solutions","authors":"Tayseer Maaly, Mahmoud El Homossany","doi":"10.21608/adjg.2022.63962.1341","DOIUrl":"https://doi.org/10.21608/adjg.2022.63962.1341","url":null,"abstract":"Purpose: This study was conducted to evaluate the effect of different staining solutions on color stability and surface roughness (SR) of Nano hybrid composite and acrylic denture teeth. Materials and Methods: Fifty specimens divided into two main groups. Each group divided into 5 subgroups each of 5 specimens of acrylic and composite teeth were used in this test. Teeth were immersed in four coloring solutions in addition to distilled water. Color measurements were performed using spectrophotometer. Color change values were determined before and after immersion in the coloring solutions. The CIE L*a*b* color space was used to evaluate color differences. SR values were evaluated before and following the immersion in coloring solutions using a digital microscope. Results: Showed significant color changes of both types of artificial teeth materials upon immersion in tea, coffee, cola, licorice or distilled water. This color change was greater in case of tea and coffee solutions. The least color change values were obtained from specimens immersed in distilled water. SR values were increased for acrylic teeth compared with composite teeth and there were significant statistical differences in surface roughness of all tested materials after immersion in any of the tested solutions. Conclusions: The acrylic denture teeth material is much more subjected to discoloration than the composite denture teeth material. Surface roughness of all tested teeth of both types recorded statistically significant decrease by immersion in staining solutions.","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88705677","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 : 2022-07-01DOI: 10.21608/adjg.2022.123059.1466
A. Mohamed, Osama Abd-Elghany, Shereen Abdul-Hameed
Purpose: the aim of this study was to evaluate the color masking ability of three dental ceramics with different translucencies. Materials and methods: Fifty-four discs of ceramics were made from three dental ceramic materials (High translucency zirconia, low translucency IPS E.max CAD and translucent Vita Suprinity). Shade of three dental ceramics was A2. They were divided into three equal groups (n=18). Each group was subdivided into three subgroups (n=6) according to composite substrate shade (A4, B4, C4) on which each ceramic disc was cemented with translucent resin cement. Color difference(∆E) and translucency parameter (TP) were evaluated by spectrophotometer. Results: Before cementation, IPS E.max showed the highest median TP values. As regards color change, no statistically significant difference between the three dental ceramic types was found. Also, non-statistical significance difference between three shades of composite substrate (A4, B4, C4). Conclusions: IPS E.max (low translucency) shows better translucency than translucent vita suprinity and High translucency zirconia. In all types of ceramics, there was statistically significant decrease in translucency parameter (TP) after cementation with translucent resin cement. The color changes (∆E) exceeded the perceptible limit for the three types of dental ceramic, so it was concluded that the tested ceramics didn’t exhibit sufficient color masking ability to hide the dark substrate of the composite shades used (A4, B4, C4).
{"title":"Color Masking Ability of Three Dental Ceramics with Different Translucencies","authors":"A. Mohamed, Osama Abd-Elghany, Shereen Abdul-Hameed","doi":"10.21608/adjg.2022.123059.1466","DOIUrl":"https://doi.org/10.21608/adjg.2022.123059.1466","url":null,"abstract":"Purpose: the aim of this study was to evaluate the color masking ability of three dental ceramics with different translucencies. Materials and methods: Fifty-four discs of ceramics were made from three dental ceramic materials (High translucency zirconia, low translucency IPS E.max CAD and translucent Vita Suprinity). Shade of three dental ceramics was A2. They were divided into three equal groups (n=18). Each group was subdivided into three subgroups (n=6) according to composite substrate shade (A4, B4, C4) on which each ceramic disc was cemented with translucent resin cement. Color difference(∆E) and translucency parameter (TP) were evaluated by spectrophotometer. Results: Before cementation, IPS E.max showed the highest median TP values. As regards color change, no statistically significant difference between the three dental ceramic types was found. Also, non-statistical significance difference between three shades of composite substrate (A4, B4, C4). Conclusions: IPS E.max (low translucency) shows better translucency than translucent vita suprinity and High translucency zirconia. In all types of ceramics, there was statistically significant decrease in translucency parameter (TP) after cementation with translucent resin cement. The color changes (∆E) exceeded the perceptible limit for the three types of dental ceramic, so it was concluded that the tested ceramics didn’t exhibit sufficient color masking ability to hide the dark substrate of the composite shades used (A4, B4, C4).","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83319613","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 : 2022-07-01DOI: 10.21608/adjg.2022.75825.1364
Reem Roushdy, maha niazy, Hadeel F. Mohamed
Purpose: This study was conducted to evaluate the effect of egg shell and white tea dentin pre-treatment on microtensile bond strength between resin composite and dentin surface. Materials and Methods: Forty-five extracted molar teeth were divided into three subgroups according to dentin pretreatment ; with no treatment (control ), Egg shell, and white tea. Each group was subdivided for microtensile testing into three equal subgroups, either after 24 hours (T0), after1 month (T1), and after 3 months (T2). The occlusal enamel was removed. And according to each group one of pretreatments was used. Resin composite blocks were fabricated on dentin after application of self etch adhesive. The teeth were longitudinally sectioned to get composite-dentin beams, two central beams were selected from 45 teeth in order to have 90 beams. Specimens were assessed after 2 storage periods in artificial saliva: either one month (T1) or three months (T2) storage period. Specimen were subjected to microtensile bond strength testing . Results: at T0, there was no statistically significant difference in mean μTBS between different dentin pre-treatments, while at T1 and T2, white tea group showed significantly the highest μTBS mean values, followed by egg shell group, then control group. Conclusion: Natural remineralizing agents could enhance microtensile bond strength of universal bonding system in self etch mode, and remineralizing potential of natural agents has stabilized by time.
{"title":"Effect of Egg Shell and White Tea Dentin Pretreatment on Microtensile Bond Strength of Universal Adhesive System","authors":"Reem Roushdy, maha niazy, Hadeel F. Mohamed","doi":"10.21608/adjg.2022.75825.1364","DOIUrl":"https://doi.org/10.21608/adjg.2022.75825.1364","url":null,"abstract":"Purpose: This study was conducted to evaluate the effect of egg shell and white tea dentin pre-treatment on microtensile bond strength between resin composite and dentin surface. Materials and Methods: Forty-five extracted molar teeth were divided into three subgroups according to dentin pretreatment ; with no treatment (control ), Egg shell, and white tea. Each group was subdivided for microtensile testing into three equal subgroups, either after 24 hours (T0), after1 month (T1), and after 3 months (T2). The occlusal enamel was removed. And according to each group one of pretreatments was used. Resin composite blocks were fabricated on dentin after application of self etch adhesive. The teeth were longitudinally sectioned to get composite-dentin beams, two central beams were selected from 45 teeth in order to have 90 beams. Specimens were assessed after 2 storage periods in artificial saliva: either one month (T1) or three months (T2) storage period. Specimen were subjected to microtensile bond strength testing . Results: at T0, there was no statistically significant difference in mean μTBS between different dentin pre-treatments, while at T1 and T2, white tea group showed significantly the highest μTBS mean values, followed by egg shell group, then control group. Conclusion: Natural remineralizing agents could enhance microtensile bond strength of universal bonding system in self etch mode, and remineralizing potential of natural agents has stabilized by time.","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75748047","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 : 2022-07-01DOI: 10.21608/adjg.2022.76291.1390
R. M. Mahmoud, S. Ibrahim, Sara Elkabbany
Purpose: The aim of this study was evaluation of cephalometric changes in treatment of skeletal class III malocclusion using miniscrews and intermaxillary closing coil springs. Material and methods: Ten patients with skeletal Class III malocclusion due to maxillary deficiency were selected, their age range from 12 to 15 years old with erupted all permanent teeth. Miniscrews (Hubit, Hubit co, Korea) were inserted (1.6 mm diameter, 10 mm length) in upper arch between upper second premolars and first molars and (1.4 mm diameter, 8 mm length) in lower arch between canines and first premolars were used. A fixed posterior bite plate was used to eliminate occlusal interferences and facilitate bite jumping. The force was immediately delivered (250g) per sides using closed coil spring (Ortho Technology, TAD coil spring, 9mm, USA). Dentoskeletal and soft tissues cephalometric changes were measured by using Orisceph RX3 software (Italy) for pre and after 6 th months. Results: Regarding specific cephalometric measurements there was statistically significant difference and soft tissue improvement. Conclusion: Intermaxillary miniscrews supported coil spring is a promising protocol for skeletal class III patient . Success depends on proper presurgical patient counseling and miniscrews placement.
{"title":"Evaluation of Cephalometric Changes in Treatment of Skeletal Class III Malocclusion Using Miniscrews and Intermaxillary Coil Spring","authors":"R. M. Mahmoud, S. Ibrahim, Sara Elkabbany","doi":"10.21608/adjg.2022.76291.1390","DOIUrl":"https://doi.org/10.21608/adjg.2022.76291.1390","url":null,"abstract":"Purpose: The aim of this study was evaluation of cephalometric changes in treatment of skeletal class III malocclusion using miniscrews and intermaxillary closing coil springs. Material and methods: Ten patients with skeletal Class III malocclusion due to maxillary deficiency were selected, their age range from 12 to 15 years old with erupted all permanent teeth. Miniscrews (Hubit, Hubit co, Korea) were inserted (1.6 mm diameter, 10 mm length) in upper arch between upper second premolars and first molars and (1.4 mm diameter, 8 mm length) in lower arch between canines and first premolars were used. A fixed posterior bite plate was used to eliminate occlusal interferences and facilitate bite jumping. The force was immediately delivered (250g) per sides using closed coil spring (Ortho Technology, TAD coil spring, 9mm, USA). Dentoskeletal and soft tissues cephalometric changes were measured by using Orisceph RX3 software (Italy) for pre and after 6 th months. Results: Regarding specific cephalometric measurements there was statistically significant difference and soft tissue improvement. Conclusion: Intermaxillary miniscrews supported coil spring is a promising protocol for skeletal class III patient . Success depends on proper presurgical patient counseling and miniscrews placement.","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83347095","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 : 2022-04-01DOI: 10.21608/adjg.2022.85202.1399
Walaa El-Hefnawy, A. Ahmed, Walaa El-Mekkawi
Purpose: The aim of this study was to assess the fracture resistance of PEEK endocrowns and post-retained PEEK crowns with two preparation designs (ferrule and without ferrule). Materials and methods: Eighty sound human mandibular first premolars were selected. Teeth were divided into 4 main groups (n= 20): Group1: Were assigned for endocrown preparation with Butt joint. Group 2: Were assigned for endocrown preparation with Shoulder finish line. Group 3: Were assigned for PEEK post & core preparation without ferrule. Group 4: Were assigned for PEEK post & core preparation with ferrule. Endocrowns of both Group 1 and Group 2 were made of PEEK material veneered with composite. Both Group 3 and Group 4 were covered with PEEK crowns veneered with composite. All Restorations either PEEK post & cores or endocrowns and final crowns were sandblasted with 110 Mm aluminium oxide. Finally, cemented with self-adhesive resin cement (G-Cem cement). Results: The highest mean value was recorded in Post & core with ferrule (above CEJ) (1262.29±65.02), followed by Endocrown with Butt Joint (1101.44 ± 81.7), then Endocrown with Shoulder finish line (890.99±75.42), with the least value recorded in Post & core without ferrule (below CEJ) (726.03±71.26). Statistically, ANOVA test showed a considerable difference between groups (p=0.00). Tukey’s post hoc test showed a considerable difference between each 2 groups. Conclusion: It was concluded that the mandibular premolars that were restored by PEEK Post-cores covered with crowns which designed with ferrule recorded the highest fracture resistance load. Codex : 05/22.04 azhardentj@azhar.edu.eg http://adjg.journals.ekb.eg DOI: 10.21608/adjg.2022.85202.1399 Restorative Dentistry (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)
{"title":"Fracture Resistance of CAD/CAM Fabricated Polyetheretherketone (PEEK) Endocrowns and Post Retained Crowns with Two Preparation designs","authors":"Walaa El-Hefnawy, A. Ahmed, Walaa El-Mekkawi","doi":"10.21608/adjg.2022.85202.1399","DOIUrl":"https://doi.org/10.21608/adjg.2022.85202.1399","url":null,"abstract":"Purpose: The aim of this study was to assess the fracture resistance of PEEK endocrowns and post-retained PEEK crowns with two preparation designs (ferrule and without ferrule). Materials and methods: Eighty sound human mandibular first premolars were selected. Teeth were divided into 4 main groups (n= 20): Group1: Were assigned for endocrown preparation with Butt joint. Group 2: Were assigned for endocrown preparation with Shoulder finish line. Group 3: Were assigned for PEEK post & core preparation without ferrule. Group 4: Were assigned for PEEK post & core preparation with ferrule. Endocrowns of both Group 1 and Group 2 were made of PEEK material veneered with composite. Both Group 3 and Group 4 were covered with PEEK crowns veneered with composite. All Restorations either PEEK post & cores or endocrowns and final crowns were sandblasted with 110 Mm aluminium oxide. Finally, cemented with self-adhesive resin cement (G-Cem cement). Results: The highest mean value was recorded in Post & core with ferrule (above CEJ) (1262.29±65.02), followed by Endocrown with Butt Joint (1101.44 ± 81.7), then Endocrown with Shoulder finish line (890.99±75.42), with the least value recorded in Post & core without ferrule (below CEJ) (726.03±71.26). Statistically, ANOVA test showed a considerable difference between groups (p=0.00). Tukey’s post hoc test showed a considerable difference between each 2 groups. Conclusion: It was concluded that the mandibular premolars that were restored by PEEK Post-cores covered with crowns which designed with ferrule recorded the highest fracture resistance load. Codex : 05/22.04 azhardentj@azhar.edu.eg http://adjg.journals.ekb.eg DOI: 10.21608/adjg.2022.85202.1399 Restorative Dentistry (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87256404","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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