Pub Date : 2022-01-01DOI: 10.21608/adjg.2021.48254.1318
Jannat Hassan, A. Ahmed, Walaa El-Mekkawi
Purpose: The purpose of this study was to compare marginal fit of Zirconia and Polyetheretherketone (PEEK) inlay retained fixed partial dentures (IRFPD) fabricated by using a computer-aided design and computer-aided manufacturing (CAD-CAM) system. Materials and Methods: Sound Mandibular second premolar and mandibular second molar were selected to simulate a clinical situation of a missing mandibular first molar and embedded in an epoxy resin (master model). Both teeth received a standard preparation of IRFPD with respect to all-ceramic preparation design parameters. The master model was duplicated into 18 epoxy resin models for standardization during testing procedure, and 18 IRFPDs were fabricated with CAD-CAM system and divided into 2 groups according to materials type (n=9); Group 1: 3-mol yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP), Group 2: PEEK. Marginal Discrepancy of all bridges was tested before and after cementation with RelyX U200 self-adhesive resin cement (SARC) by using an optical digital microscope with the aid of an image analysis system. Results: Significantly lower marginal gap values were obtained in Zirconia group before and after cementation in comparison to PEEK group. There was also a significant increase of marginal gap after cementation in both groups, with higher mean in Zirconia group. Conclusion: The margins of IRFPDs performed well with recommended bonding protocols for both materials and present a viable treatment option for replacing a missing single posterior tooth. Both materials presented clinically accepted results of marginal discrepancy less than 120 μm. Further studies simulating clinical conditions are needed to understand how they perform in function. Codex : 03/22.01 azhardentj@azhar.edu.eg http://adjg.journals.ekb.eg DOI: 10.21608/adjg.2021.48254.1318 Restorative Dentistry (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)
{"title":"Marginal Fit Evaluation of Zirconia and Polyetheretherketone Inlay Retained Fixed Partial Dentures Fabricated with CAD-CAM","authors":"Jannat Hassan, A. Ahmed, Walaa El-Mekkawi","doi":"10.21608/adjg.2021.48254.1318","DOIUrl":"https://doi.org/10.21608/adjg.2021.48254.1318","url":null,"abstract":"Purpose: The purpose of this study was to compare marginal fit of Zirconia and Polyetheretherketone (PEEK) inlay retained fixed partial dentures (IRFPD) fabricated by using a computer-aided design and computer-aided manufacturing (CAD-CAM) system. Materials and Methods: Sound Mandibular second premolar and mandibular second molar were selected to simulate a clinical situation of a missing mandibular first molar and embedded in an epoxy resin (master model). Both teeth received a standard preparation of IRFPD with respect to all-ceramic preparation design parameters. The master model was duplicated into 18 epoxy resin models for standardization during testing procedure, and 18 IRFPDs were fabricated with CAD-CAM system and divided into 2 groups according to materials type (n=9); Group 1: 3-mol yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP), Group 2: PEEK. Marginal Discrepancy of all bridges was tested before and after cementation with RelyX U200 self-adhesive resin cement (SARC) by using an optical digital microscope with the aid of an image analysis system. Results: Significantly lower marginal gap values were obtained in Zirconia group before and after cementation in comparison to PEEK group. There was also a significant increase of marginal gap after cementation in both groups, with higher mean in Zirconia group. Conclusion: The margins of IRFPDs performed well with recommended bonding protocols for both materials and present a viable treatment option for replacing a missing single posterior tooth. Both materials presented clinically accepted results of marginal discrepancy less than 120 μm. Further studies simulating clinical conditions are needed to understand how they perform in function. Codex : 03/22.01 azhardentj@azhar.edu.eg http://adjg.journals.ekb.eg DOI: 10.21608/adjg.2021.48254.1318 Restorative Dentistry (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77795190","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 : 2022-01-01DOI: 10.21608/adjg.2021.47750.1312
Nada Salem, Mervat I. Fawzy, M. Mostafa
Purpose: this study was conducted to design an educational dental program (campaign) for improvement of the awareness of parents, teachers and general dental practitioners regarding emergency management of traumatic dental injuries (TDI) in children and evaluate the impact of educational dental program (campaign) on level of knowledge about emergency procedure in TDI in children after 3 and 9 months. Subjects and Methods: A total number of 800 parents, 200 schoolteachers, and 200 general dental Practitioners’ were randomly chosen. Evaluation of knowledge level for all groups was surveyed using a self-administered structured questionnaire, followed by awareness stage campaign to improve the level of knowledge of these groups of adults who would be the first line of defense in emergency TDI that can happen at home, school, and primary medical centers; then, the effect of the different awareness methods was evaluated among the groups. Result: A significant difference have been noticed in the level of knowledge in the groups after the educational dental program (campaign). Conclusion: educational dental program (campaign) play a main role in increasing level of awareness with emergency management of traumatic injuries in children,and cases prognosis.
{"title":"Educational Dental Program and Its Impact on Emergency Management of Traumatic Dental Injuries in Children","authors":"Nada Salem, Mervat I. Fawzy, M. Mostafa","doi":"10.21608/adjg.2021.47750.1312","DOIUrl":"https://doi.org/10.21608/adjg.2021.47750.1312","url":null,"abstract":"Purpose: this study was conducted to design an educational dental program (campaign) for improvement of the awareness of parents, teachers and general dental practitioners regarding emergency management of traumatic dental injuries (TDI) in children and evaluate the impact of educational dental program (campaign) on level of knowledge about emergency procedure in TDI in children after 3 and 9 months. Subjects and Methods: A total number of 800 parents, 200 schoolteachers, and 200 general dental Practitioners’ were randomly chosen. Evaluation of knowledge level for all groups was surveyed using a self-administered structured questionnaire, followed by awareness stage campaign to improve the level of knowledge of these groups of adults who would be the first line of defense in emergency TDI that can happen at home, school, and primary medical centers; then, the effect of the different awareness methods was evaluated among the groups. Result: A significant difference have been noticed in the level of knowledge in the groups after the educational dental program (campaign). Conclusion: educational dental program (campaign) play a main role in increasing level of awareness with emergency management of traumatic injuries in children,and cases prognosis.","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90156153","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 : 2022-01-01DOI: 10.21608/adjg.2021.50250.1322
Marwa Seif, I. Motawea, Eatemad A. Shoreibah, E. El-Maghraby, H. Shalaby
Purpose: This study aimed to monitor the surface characteristics of commercially available titanium implants coated with chitosan and magnesium oxide after sterilization by two different doses of gamma radiation as well as optimizing the most suitable dose of sterilization. Materials and Methods: A total number of 120 titanium alloy discs divided into six groups (n=20) were used. Group 1A, included implants coated with magnesium oxide (MgO), Group 1B, implants coated with MgO and sterilized with 20 KGy, Group 1C,implants coated with MgO and sterilized with 25 KGy, Group 2A, implants coated with chitosan, Group 2B, implants coated with chitosan and sterilized with 20 KGy, Group 2C, implants coated with chitosan and sterilized with 25 KGy. Characterization of the different prepared dental implant surfaces was done by X-ray diffraction (XRD) and Fourier Transform Infra-Red Spectroscopy (FTIR). Topographical identification was done using Environmental scanning electron microscope (ESEM). Results: No detected changes occurred in XRD graphs after sterilization in all groups, The FTIR graph of magnesium oxide groups showed no changes while there were decrease in the intensity of all peaks in chitosan groups after sterilization. The results of surface roughness revealed that the highest mean surface roughness (μm) was recorded for chitosan after 25 KGy (189.2±7.8 μm), and the least mean surface roughness was recorded for chitosan before sterilization (135.2±12μm). Conclusions: Titanium implants coated with Magnesium Oxide can be sterilized with either doses of gamma radiation 20 and 25 KGy while titanium implants coated with Chitosan can be sterilized with 20 KGy, whereas the 25 KGy denaturated the chitosan coating. Codex : 04/22.01 azhardentj@azhar.edu.eg http://adjg.journals.ekb.eg DOI: 10.21608/adjg.2021.50250.1322 Restorative Dentistry (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)
{"title":"Evaluation of Surface Characteristic of Ti- Implant Coated with Nano-Ceramic and Chitosan after Sterilization by Gamma Irradiation","authors":"Marwa Seif, I. Motawea, Eatemad A. Shoreibah, E. El-Maghraby, H. Shalaby","doi":"10.21608/adjg.2021.50250.1322","DOIUrl":"https://doi.org/10.21608/adjg.2021.50250.1322","url":null,"abstract":"Purpose: This study aimed to monitor the surface characteristics of commercially available titanium implants coated with chitosan and magnesium oxide after sterilization by two different doses of gamma radiation as well as optimizing the most suitable dose of sterilization. Materials and Methods: A total number of 120 titanium alloy discs divided into six groups (n=20) were used. Group 1A, included implants coated with magnesium oxide (MgO), Group 1B, implants coated with MgO and sterilized with 20 KGy, Group 1C,implants coated with MgO and sterilized with 25 KGy, Group 2A, implants coated with chitosan, Group 2B, implants coated with chitosan and sterilized with 20 KGy, Group 2C, implants coated with chitosan and sterilized with 25 KGy. Characterization of the different prepared dental implant surfaces was done by X-ray diffraction (XRD) and Fourier Transform Infra-Red Spectroscopy (FTIR). Topographical identification was done using Environmental scanning electron microscope (ESEM). Results: No detected changes occurred in XRD graphs after sterilization in all groups, The FTIR graph of magnesium oxide groups showed no changes while there were decrease in the intensity of all peaks in chitosan groups after sterilization. The results of surface roughness revealed that the highest mean surface roughness (μm) was recorded for chitosan after 25 KGy (189.2±7.8 μm), and the least mean surface roughness was recorded for chitosan before sterilization (135.2±12μm). Conclusions: Titanium implants coated with Magnesium Oxide can be sterilized with either doses of gamma radiation 20 and 25 KGy while titanium implants coated with Chitosan can be sterilized with 20 KGy, whereas the 25 KGy denaturated the chitosan coating. Codex : 04/22.01 azhardentj@azhar.edu.eg http://adjg.journals.ekb.eg DOI: 10.21608/adjg.2021.50250.1322 Restorative Dentistry (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82954735","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 : 2022-01-01DOI: 10.21608/adjg.2021.42852.1295
Mahaa Ahmed, Hala Gamal El-Din, S. Kabeel
Purpose: This study compared between nano composite denture teeth and IPN crosslinked acrylic teeth regarding masticatory efficiency and some mechanical properties (wear, micro tensile bonding strength to denture base). Material and methods: Ten completely edentulous patients with ages ranging from 55-60 years were selected. Each patient received two dentures made from heat-cured acrylic resin , One with IPN crosslinked acrylic teeth and the other with nano composite teeth. Masticatory efficiency was evaluated for each patient at the time of insertion of the dentures and one month later. Laboratory study: For testing wear, thirty specimens were constructed and divided into two groups. Fifteen IPN cross-linked acrylic teeth (Group І) and Fifteen nano composite denture teeth (Group ІІ). For testing Micro tensile bonding strength, Twelve specimens were constructed of artificial teeth together with the heat-cured acrylic resin bases, These specimens were fixed to a microsawing machine and cut into one hundred and twenty micro beam samples which were then divided into two groups; sixty beams of IPN cross-linked acrylic teeth (Group І) and sixty beams of nano composite denture teeth (Group ІІ). Results: The results revealed no statistical significant differences (p ≤ 0.05) as indicated by paired t-test between IPN cross-linked acrylic teeth and nano composite teeth in masticatory efficiency, wear, and micro tensile bonding strength to the denture base. Conclusions: In comparison to IPN cross-linked acrylic teeth, nano composite denture teeth showed non-significant difference regarding masticatory efficiency, wear resistance, and micro tensile bonding strength to the denture base. Codex : 02/22.01 azhardentj@azhar.edu.eg http://adjg.journals.ekb.eg DOI: 10.21608/adjg.2021.42852.1295 Restorative Dentistry (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)
{"title":"Effect of Two Denture Teeth Materials on Masticatory Efficiency, Wear, Bonding to Denture Base","authors":"Mahaa Ahmed, Hala Gamal El-Din, S. Kabeel","doi":"10.21608/adjg.2021.42852.1295","DOIUrl":"https://doi.org/10.21608/adjg.2021.42852.1295","url":null,"abstract":"Purpose: This study compared between nano composite denture teeth and IPN crosslinked acrylic teeth regarding masticatory efficiency and some mechanical properties (wear, micro tensile bonding strength to denture base). Material and methods: Ten completely edentulous patients with ages ranging from 55-60 years were selected. Each patient received two dentures made from heat-cured acrylic resin , One with IPN crosslinked acrylic teeth and the other with nano composite teeth. Masticatory efficiency was evaluated for each patient at the time of insertion of the dentures and one month later. Laboratory study: For testing wear, thirty specimens were constructed and divided into two groups. Fifteen IPN cross-linked acrylic teeth (Group І) and Fifteen nano composite denture teeth (Group ІІ). For testing Micro tensile bonding strength, Twelve specimens were constructed of artificial teeth together with the heat-cured acrylic resin bases, These specimens were fixed to a microsawing machine and cut into one hundred and twenty micro beam samples which were then divided into two groups; sixty beams of IPN cross-linked acrylic teeth (Group І) and sixty beams of nano composite denture teeth (Group ІІ). Results: The results revealed no statistical significant differences (p ≤ 0.05) as indicated by paired t-test between IPN cross-linked acrylic teeth and nano composite teeth in masticatory efficiency, wear, and micro tensile bonding strength to the denture base. Conclusions: In comparison to IPN cross-linked acrylic teeth, nano composite denture teeth showed non-significant difference regarding masticatory efficiency, wear resistance, and micro tensile bonding strength to the denture base. Codex : 02/22.01 azhardentj@azhar.edu.eg http://adjg.journals.ekb.eg DOI: 10.21608/adjg.2021.42852.1295 Restorative Dentistry (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73979888","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 : 2022-01-01DOI: 10.21608/adjg.2021.56032.1328
Dalia Alramady, maha niazy, Asmaa S. A. Yassen, M. Attia
Purpose: This study was carried out to compare between the remineralizing ability of incorporating calcium phosphate nanoparticles (nCaP) into composite and composite without calcium phosphate nanoparticles, using adhesive with and without fluoride on remineralization of caries affected dentin in-vivo. Materials and Methods: The nanoparticles were incorporated into the flowable i-FlowN composite at a mass fraction of 10%. Forty molars in forty patients having class I caries with ICDAS II score 3 were selected. In each selected molar, caries was removed except from the pulpal floor. Thereafter, molars were divided into two groups (n= 20) according to the type composite; resin composite incorporating nCaP and resin composite without nCaP. Each group was further subdivided into two subgroups (n=10) according to the adhesive used; resin composite incorporating nCaP and free fluoride adhesive, resin composite not incorporating nCaP and free fluoride adhesive. All cavities were finally sealed with nanohybride resin composite (Filtek Z350). Assessment of mineral density was performed at base line (C), after one month (C1) and after three months (C3) using digitized radiography. Results: The resin composite incorporating nCaP with adhesive induce the highest remineralization potential during the study intervals followed by resin composite incorporating nCaP free adhesive, then composite free nCaP with fluoride adhesive and lastly composite not incorporating nCaP free fluoride adhesive. Conclusion: nanoparticles are capable of remin eralizing the caries affected dentin when incorporated into composite resin and fluoride increase the remineralizing ability. Codex : 05/22.01 azhardentj@azhar.edu.eg http://adjg.journals.ekb.eg DOI: 10.21608/adjg.2021.56032.1328 Restorative Dentistry (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)
{"title":"Remineralizing Ability of Resin Composite Incorporating Calcium Phosphate Nanoparticles and Fluoride Containing Adhesive.","authors":"Dalia Alramady, maha niazy, Asmaa S. A. Yassen, M. Attia","doi":"10.21608/adjg.2021.56032.1328","DOIUrl":"https://doi.org/10.21608/adjg.2021.56032.1328","url":null,"abstract":"Purpose: This study was carried out to compare between the remineralizing ability of incorporating calcium phosphate nanoparticles (nCaP) into composite and composite without calcium phosphate nanoparticles, using adhesive with and without fluoride on remineralization of caries affected dentin in-vivo. Materials and Methods: The nanoparticles were incorporated into the flowable i-FlowN composite at a mass fraction of 10%. Forty molars in forty patients having class I caries with ICDAS II score 3 were selected. In each selected molar, caries was removed except from the pulpal floor. Thereafter, molars were divided into two groups (n= 20) according to the type composite; resin composite incorporating nCaP and resin composite without nCaP. Each group was further subdivided into two subgroups (n=10) according to the adhesive used; resin composite incorporating nCaP and free fluoride adhesive, resin composite not incorporating nCaP and free fluoride adhesive. All cavities were finally sealed with nanohybride resin composite (Filtek Z350). Assessment of mineral density was performed at base line (C), after one month (C1) and after three months (C3) using digitized radiography. Results: The resin composite incorporating nCaP with adhesive induce the highest remineralization potential during the study intervals followed by resin composite incorporating nCaP free adhesive, then composite free nCaP with fluoride adhesive and lastly composite not incorporating nCaP free fluoride adhesive. Conclusion: nanoparticles are capable of remin eralizing the caries affected dentin when incorporated into composite resin and fluoride increase the remineralizing ability. Codex : 05/22.01 azhardentj@azhar.edu.eg http://adjg.journals.ekb.eg DOI: 10.21608/adjg.2021.56032.1328 Restorative Dentistry (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"89 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75713620","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 : 2022-01-01DOI: 10.21608/adjg.2021.74882.1359
Mona El sayed, maha niazy, H. Farouk
Purpose: To evaluate the remineralizing potential of cranberry extract and phosphorylated chitosan pretreatment on microhardness and chemical structure of demineralized dentin. Materials and Methods: A total number of 36 dentin samples were divided into four main groups of 9 samples each according to the utilized treatment after demineralization. In the first group, cranberry extract was used, in the second group, phosphorylated chitosan was used. For the third group, combination of cranberry extract and phosphorylated chitosan was used, whereas in the fourth group, no treatment was carried out (control). All groups were subjected to a pH cycling for 3 days. Five microhardness measurements were performed for each dentin sample at baseline, after demineralization, immediately after treatment, after one month and after three months storage in artificial saliva. Two representative samples from each group were selected for SEM/ EDAX analysis. Results: Microhardness results revealed significant difference among all treatment groups, cranberry extract + phosphorylated chitosan combination group yielded the highest percentage of change of dentin microhardness, followed by phosphorylated chitosan group, then cranberry extract group. SEM/EDAX confirmed the microhardness results. Conclusions: Phosphorylated chitosan and cranberry extract could be considered as an effective natural treatment options to strengthen demineralized dentin. Codex : 10/22.01 azhardentj@azhar.edu.eg http://adjg.journals.ekb.eg DOI: 10.21608/adjg.2021.74882.1359 Restorative Dentistry (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)
{"title":"Evaluation of Remineralizing Potential of Cranberry and Chitosan on Demineralized Dentin (An in Vitro Study)","authors":"Mona El sayed, maha niazy, H. Farouk","doi":"10.21608/adjg.2021.74882.1359","DOIUrl":"https://doi.org/10.21608/adjg.2021.74882.1359","url":null,"abstract":"Purpose: To evaluate the remineralizing potential of cranberry extract and phosphorylated chitosan pretreatment on microhardness and chemical structure of demineralized dentin. Materials and Methods: A total number of 36 dentin samples were divided into four main groups of 9 samples each according to the utilized treatment after demineralization. In the first group, cranberry extract was used, in the second group, phosphorylated chitosan was used. For the third group, combination of cranberry extract and phosphorylated chitosan was used, whereas in the fourth group, no treatment was carried out (control). All groups were subjected to a pH cycling for 3 days. Five microhardness measurements were performed for each dentin sample at baseline, after demineralization, immediately after treatment, after one month and after three months storage in artificial saliva. Two representative samples from each group were selected for SEM/ EDAX analysis. Results: Microhardness results revealed significant difference among all treatment groups, cranberry extract + phosphorylated chitosan combination group yielded the highest percentage of change of dentin microhardness, followed by phosphorylated chitosan group, then cranberry extract group. SEM/EDAX confirmed the microhardness results. Conclusions: Phosphorylated chitosan and cranberry extract could be considered as an effective natural treatment options to strengthen demineralized dentin. Codex : 10/22.01 azhardentj@azhar.edu.eg http://adjg.journals.ekb.eg DOI: 10.21608/adjg.2021.74882.1359 Restorative Dentistry (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78763674","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 : 2022-01-01DOI: 10.21608/adjg.2021.63755.1340
Reham Almahdy, M. Mandour, Zainab El Sharkawy
Purpose: The aim of this study was to evaluate the effect of two types of finish line designs on the marginal accuracy of monolithic zirconia crowns after thermomechanical fatigue. Materials and Methods: two human first molars were prepared and duplicated using epoxy resin to produce twenty dies. Accordingly, a total of 20 monolithic zirconia crowns (N=20) were designed and constructed using CAD/ CAM machine. The crowns were divided into two groups according to the finish line design, feather edge (FE) group (n=10) and deep chamfer (DC) group (n=10). All crowns were adhesively bonded to their corresponding epoxy resin dies by using dual cure self-adhesive resin cement and subjected to thermo-mechanical fatigue simulating 3 months of clinical situations then vertical marginal gap was measured using digital microscope. Results: Statistical analysis showed that deep chamfer margin design recorded statistically significant higher marginal gap mean value (39.6383 ± 5.00193 μm) than feather edge design (32.2616 ± 2.60053μm). Conclusion: marginal accuracy of monolithic zirconia constructed with feather edge margins is better than that with deep chamfer margin designs.
{"title":"Marginal Accuracy of Monolithic Zirconia Crowns with Vertical and Horizontal Margin Configurations after Thermomechanical Fatigue","authors":"Reham Almahdy, M. Mandour, Zainab El Sharkawy","doi":"10.21608/adjg.2021.63755.1340","DOIUrl":"https://doi.org/10.21608/adjg.2021.63755.1340","url":null,"abstract":"Purpose: The aim of this study was to evaluate the effect of two types of finish line designs on the marginal accuracy of monolithic zirconia crowns after thermomechanical fatigue. Materials and Methods: two human first molars were prepared and duplicated using epoxy resin to produce twenty dies. Accordingly, a total of 20 monolithic zirconia crowns (N=20) were designed and constructed using CAD/ CAM machine. The crowns were divided into two groups according to the finish line design, feather edge (FE) group (n=10) and deep chamfer (DC) group (n=10). All crowns were adhesively bonded to their corresponding epoxy resin dies by using dual cure self-adhesive resin cement and subjected to thermo-mechanical fatigue simulating 3 months of clinical situations then vertical marginal gap was measured using digital microscope. Results: Statistical analysis showed that deep chamfer margin design recorded statistically significant higher marginal gap mean value (39.6383 ± 5.00193 μm) than feather edge design (32.2616 ± 2.60053μm). Conclusion: marginal accuracy of monolithic zirconia constructed with feather edge margins is better than that with deep chamfer margin designs.","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91067321","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 : 2022-01-01DOI: 10.21608/adjg.2021.28816.1258
Basma Hasaneen, S. Ibrahim, Naglaa El-kilani, Maha M. Mohamed
Purpose: The study was done for comparing the rate of canine retraction in addition to anchorage loss (mesial movement of the first permanent molar) with hard laser corticotomy versus conventional method of tooth movement. Patients and methods: Eighteen patients with an age range from 15 to 18 years, requiring orthodontic treatment with bimaxillary dento-alveolar protrusion were selected. The extraction of the upper first bicuspids was required followed by cuspid distalization.Patients were randomly divided into two equal groups, group I the two sides of the maxillary arch were treated by conventional canine retraction, while group II, corticotomy by hard tissue laser was used before starting the canine retraction. The coil springs were placed between the canine and the miniscrews positioned between second bicuspid and first permanent molar. Canine retraction was measured four times every 2 months from starting the retraction till 6 months of retraction. Results: The canine retraction rates was faster in hard laser corticotomy group than that in a conventional group. Forward movement of the first permanent molars were registered in both groups. In the laser group pain significantly decreased by time. In the laser group the mean value of oedema increased by time. Conclusion: Hard laser corticotomy technique is an efficient procedure that reduce the time needed for canine distalization and educe the post-surgical pain.
{"title":"Assessment of Accelerating Orthodontic Tooth Movement by Hard Laser Corticotomy","authors":"Basma Hasaneen, S. Ibrahim, Naglaa El-kilani, Maha M. Mohamed","doi":"10.21608/adjg.2021.28816.1258","DOIUrl":"https://doi.org/10.21608/adjg.2021.28816.1258","url":null,"abstract":"Purpose: The study was done for comparing the rate of canine retraction in addition to anchorage loss (mesial movement of the first permanent molar) with hard laser corticotomy versus conventional method of tooth movement. Patients and methods: Eighteen patients with an age range from 15 to 18 years, requiring orthodontic treatment with bimaxillary dento-alveolar protrusion were selected. The extraction of the upper first bicuspids was required followed by cuspid distalization.Patients were randomly divided into two equal groups, group I the two sides of the maxillary arch were treated by conventional canine retraction, while group II, corticotomy by hard tissue laser was used before starting the canine retraction. The coil springs were placed between the canine and the miniscrews positioned between second bicuspid and first permanent molar. Canine retraction was measured four times every 2 months from starting the retraction till 6 months of retraction. Results: The canine retraction rates was faster in hard laser corticotomy group than that in a conventional group. Forward movement of the first permanent molars were registered in both groups. In the laser group pain significantly decreased by time. In the laser group the mean value of oedema increased by time. Conclusion: Hard laser corticotomy technique is an efficient procedure that reduce the time needed for canine distalization and educe the post-surgical pain.","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78054131","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 : 2021-10-01DOI: 10.21608/adjg.2021.37107.1280
Sarah D. Shaheen, maha niazy, W. jamil, A. Abu-Seida
Purpose: to evaluate the biological response of the dog teeth to Platelets Rich plasma (PRP), Platelets Rich fibrin (PRF) and mineral trioxide aggregate (MTA) as pulp capping materials. Material and Methods: A total of 90 teeth of dogs were included. Class V cavities were prepared. Pulp exposure was performed in the middle of cavity floor. The teeth were divided into three groups of 30 teeth according to the material used; A1: PRP, A2: PRF and A3: MTA. Glass ionomer restoration was applied as restoration for the cavities. The tissue response to the materials was assessed at three different post-operative periods of 7, 30, 60 days. The animal was sacrificed. Histomorphometric analysis was performed. Result: the results showed high inflammatory cells count at 7 days for all treated groups; PRP treated teeth showed the highest at 7 days, while PRF showed the least. At 1 and 2 months postoperatively no significant difference was found between all the treated groups. For dentin bridge scores; there was no significant difference between all the materials at 7 days and 1 month. At 2 months; the MTA treated teeth recorded the greatest dentin bridge score as compared to all treated teeth. As for integrity of odontoblast score; results showed no significant difference between different materials at 7 days and 1 month. The MTA treated teeth showed the highest score as compared to PRP and PRF at 2 months. Conclusion: Among the three different materials, PRP and PRF appeared to be promising pulp capping agents. Codex : 04/21.10 azhardentj@azhar.edu.eg http://adjg.journals.ekb.eg DOI: 10.21608/adjg.2021.37107.1280 Restorative Dentistry (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)
{"title":"Pulp Tissue Response to Platelets Rich Plasma, Platelets Rich Fibrin and Mineral Trioxide Aggregate as Pulp Capping Materials","authors":"Sarah D. Shaheen, maha niazy, W. jamil, A. Abu-Seida","doi":"10.21608/adjg.2021.37107.1280","DOIUrl":"https://doi.org/10.21608/adjg.2021.37107.1280","url":null,"abstract":"Purpose: to evaluate the biological response of the dog teeth to Platelets Rich plasma (PRP), Platelets Rich fibrin (PRF) and mineral trioxide aggregate (MTA) as pulp capping materials. Material and Methods: A total of 90 teeth of dogs were included. Class V cavities were prepared. Pulp exposure was performed in the middle of cavity floor. The teeth were divided into three groups of 30 teeth according to the material used; A1: PRP, A2: PRF and A3: MTA. Glass ionomer restoration was applied as restoration for the cavities. The tissue response to the materials was assessed at three different post-operative periods of 7, 30, 60 days. The animal was sacrificed. Histomorphometric analysis was performed. Result: the results showed high inflammatory cells count at 7 days for all treated groups; PRP treated teeth showed the highest at 7 days, while PRF showed the least. At 1 and 2 months postoperatively no significant difference was found between all the treated groups. For dentin bridge scores; there was no significant difference between all the materials at 7 days and 1 month. At 2 months; the MTA treated teeth recorded the greatest dentin bridge score as compared to all treated teeth. As for integrity of odontoblast score; results showed no significant difference between different materials at 7 days and 1 month. The MTA treated teeth showed the highest score as compared to PRP and PRF at 2 months. Conclusion: Among the three different materials, PRP and PRF appeared to be promising pulp capping agents. Codex : 04/21.10 azhardentj@azhar.edu.eg http://adjg.journals.ekb.eg DOI: 10.21608/adjg.2021.37107.1280 Restorative Dentistry (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75610080","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 : 2021-10-01DOI: 10.21608/adjg.2021.76140.1377
W. Mahmoud, Wael H. Kamel, Heba A. Sharaf El Din
PURPOSE: assessment of the fracture resistance and microhardness of radicular dentine following irrigation with apple vinegar as a final rinse. MATERIAL AND METHODS: fifty extracted human lower premolars, in accordance to the inclusion criteria were chosen. All lower premolars were decoronated then prepared using M3 ProGold rotary files and irrigated with 2.6% NaOCl 2 ml/1 min. Then all samples were distributed randomly into 2 main experimental groups (20 samples each) depending on the final rinse. Group I: irrigated with Apple vinegar (AV), Group II: irrigated with 17% Ethylenediamine tetra acetic acid (EDTA) and a Control group (10 samples): irrigated with sterile saline. All samples were prepared to be subjected to either fracture resistance or microhardness tests. The universal testing machine was used to assess fracture resistance. While the Vickers microhardness test was used to determine microhardness. RESULTS: In terms of fracture resistance, the results revealed that group II (EDTA) had a statistically significant reduction in fracture resistance, compared to group I (Apple vinegar), as well as the control group (saline). However, there was no statistically significant difference between group I (Apple vinegar) and control group (saline). While there was no statistically significant difference in total microhardness between the two main experimental groups, there was a statistically significant reduction in microhardness in the experimental groups as compared to the control group. CONCLUSIONS: Regarding fracture resistance, apple vinegar shows better results than 17% EDTA. While, it is comparable to 17%EDTA in microhardness of radicular dentine. Codex : 09/21.10 azhardentj@azhar.edu.eg http://adjg.journals.ekb.eg DOI: 10.21608/adjg.2021.76140.1377 Restorative Dentistry (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)
{"title":"Effect of Apple Vinegar as a Final Irrigating Solution on Fracture Resistance and Microhardness of Radicular Dentin","authors":"W. Mahmoud, Wael H. Kamel, Heba A. Sharaf El Din","doi":"10.21608/adjg.2021.76140.1377","DOIUrl":"https://doi.org/10.21608/adjg.2021.76140.1377","url":null,"abstract":"PURPOSE: assessment of the fracture resistance and microhardness of radicular dentine following irrigation with apple vinegar as a final rinse. MATERIAL AND METHODS: fifty extracted human lower premolars, in accordance to the inclusion criteria were chosen. All lower premolars were decoronated then prepared using M3 ProGold rotary files and irrigated with 2.6% NaOCl 2 ml/1 min. Then all samples were distributed randomly into 2 main experimental groups (20 samples each) depending on the final rinse. Group I: irrigated with Apple vinegar (AV), Group II: irrigated with 17% Ethylenediamine tetra acetic acid (EDTA) and a Control group (10 samples): irrigated with sterile saline. All samples were prepared to be subjected to either fracture resistance or microhardness tests. The universal testing machine was used to assess fracture resistance. While the Vickers microhardness test was used to determine microhardness. RESULTS: In terms of fracture resistance, the results revealed that group II (EDTA) had a statistically significant reduction in fracture resistance, compared to group I (Apple vinegar), as well as the control group (saline). However, there was no statistically significant difference between group I (Apple vinegar) and control group (saline). While there was no statistically significant difference in total microhardness between the two main experimental groups, there was a statistically significant reduction in microhardness in the experimental groups as compared to the control group. CONCLUSIONS: Regarding fracture resistance, apple vinegar shows better results than 17% EDTA. While, it is comparable to 17%EDTA in microhardness of radicular dentine. Codex : 09/21.10 azhardentj@azhar.edu.eg http://adjg.journals.ekb.eg DOI: 10.21608/adjg.2021.76140.1377 Restorative Dentistry (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)","PeriodicalId":7493,"journal":{"name":"Al-Azhar Dental Journal for Girls","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88551897","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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