Effect of two occlusal Patterns of Implant Retained Overdenture by Two Attachment Systems on the Electromyographic Activity
Marwa
Mahmoud
Removable Prosthodontic Specialist of Ain Shams Medical Affairs, Cairo, Egypt.
author
Ahmed
Shaban
Lecturer of Removable Prosthodontics, Faculty of Dental Medicine, Future University, Cairo, Egypt.
author
Mai
Attia
Associate Professor of Oral Medicine, Periodontology, Diagnosis and Radiology, Faculty of Dental Medicine for Girls,
Al-Azhar University, Cairo, Egypt.
author
Mostafa
Abdel-Ghany
Professor of Removable Prosthodontic, Former Dean of Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt.
author
text
article
2021
eng
Purpose: To assess the effect of two attachment systems ball and socket and locator attachments and two occlusal patterns; bilateral balanced and monoplane occlusion on the electromyographic activity of temporalis and masseter muscles in mandibular implant retained overdenture. Material and Methods: Twelve male completely edentulous patients were selected from the outpatient clinic, Prosthodontic department, Faculty of Dental Medicine for Girls, Al-Azhar University. The patients were divided into two different groups: Group I received the Locator attachment and Group II received ball and socket attachment. All patients in both groups were divided equally into two subgroups: In subgroup 1: Patients received complete dentures with bilateral occlusal pattern and subgroup 2 the patients received complete denture with monoplane occlusion. Electromyographic activity for masseter and temporalis muscles were made after one month and three months for soft food and hard food. In subgroup 1 the dentures were replaced by the dentures with monoplane occlusion while in subgroup 2 the dentures were replaced by the denture with bilateral balanced occlusion. In group I and II attachments were switched and the same steps were followed for subgroups. The data were collected. Results: When using denture with bilateral balanced occlusion with locator attachment showed low electromyographic activity on the masseter and temporalis muscle than the denture with monoplane occlusion and there was no significant difference when using soft food during the first month while after 3 months there were significant difference. When using ball & socket attachments there were significant difference when using soft and hard food when using hard food there are significant difference between the subgroups. Conclusion: The two implant retained mandibular overdenture with the locator attachment showed relatively low electromyographic activity of the masticatory muscles (masseter and temporalis) than with ball and socket attachment and high electromyographic activity of the masticatory muscles (masseter and temporalis) with monoplane occlusion than with bilateral balanced occlusion.
Al-Azhar Dental Journal for Girls
Al-Azhar University, Faculty of Dental Medicine, Girls Branch
2537-0308
8
v.
1-C
no.
2021
1
6
https://adjg.journals.ekb.eg/article_141979_0149792705b5fecca48702b52ca45d3d.pdf
dx.doi.org/10.21608/adjg.2021.10714.1132
Effect of Two Loading Protocols on Supporting Structures of Symphyseal Implant Supported Mandibular Overdenture
Mai
Abdel Fatah
Dentist at ministry of health, Cairo, Egypt.
author
Yasmeen
AlMahdy
Professor of Removable Prosthodontic Department, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt.
author
Asmaa
Ashour
Lecturer of Removable Prosthodontic Department, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt.
author
text
article
2021
eng
Purpose: To evaluate the influence of 2 different loading protocols on single implant supported overdentures, immediate and conventional protocols on the supporting structures regarding: The extent of resorption of peri-implant bone and clinical evaluation of peri-implant soft tissue. Material and Methods: ten completely edentulous patients was selected to receive single implant supported overdenture. They have been divided after the insertion of implant into two groups according to time of loading. Group I received ball and socket attachment and loaded after 3 months of surgical procedures, while Group II was loaded within 7 days from surgery. Then all patients were evaluated clinically regarding probing depth, bleeding and plaque index and radiographically at the day of loading, 3, 6 and 9 months postoperatively. Results: comparison between the two groups in marginal bone loss was insignificant except in the first two periods, while probing depth was insignificant except at (6 to 9 month). For bleeding and plaque index, it was insignificant except at time of insertion for bleeding index. Conclusions: Immediate loading of single implants supporting a ball-retained mandibular overdenture is associated with more marginal bone resorption when compared with delayed loading of implants after 9 months follow up but it still can be used with single implant supported overdenture. Clinically, immediate loading had probing depth and bleeding index higher than delayed loading, while for plaque index for both loading protocols was almost the same.
Al-Azhar Dental Journal for Girls
Al-Azhar University, Faculty of Dental Medicine, Girls Branch
2537-0308
8
v.
1-C
no.
2021
7
17
https://adjg.journals.ekb.eg/article_141998_fa5b12e24bf20ab2e6eb92c523381b2c.pdf
dx.doi.org/10.21608/adjg.2021.14083.1171
The Effect of Mesoporous Silica Nanoparticles Desensitizing Slurry Alone or Combined with Calcium Phosphate on Dentin Permeability (An in Scanning Electron Microscope study)
Basant
Abdel Samie
Master degree Candidate at Operative Dentistry Department, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt.
author
Mohamed
Al-Yasaki
Professor of Operative Dentistry, Dean of Faculty of Dental Medicine Sinai University, Egypt.
author
Nevin
Gad
Assistant Professor of Operative Dentistry, Faculty of Dental Medicine For Girls. Al-Azhar University, Cairo, Egypt.
author
text
article
2021
eng
Purpose: Determining the dentinal tubules occlusion and permeability of desensitized dentin after its treatment with (MSN) slurry alone or combined with calcium phosphate (Ca2po4@MSN)versus (NHAp) suspension. Materials and Methods: eighty sound posterior teeth were extracted for orthodontic purpose. Dentin disks of 1 mm thickness were cut perpendicular to the long axis of the teeth at level of 1 mm above the cemento-enamel junction. All samples were treated with 6% citric acid solution for 2 minutes to stimulate sensitive teeth. The samples were divided into four main groups (30 each) according to the material used either Ca+2and PO4@ MSN slurry, slurry of MSN nanoparticles, NHAp suspension and no treatments a control group. These four groups were further subdivided into two groups according to time to after 1 day and after 4 weeks. In random samples from each group, the samples were evaluated for dentinal tubules occlusion using Environmental Scanning Electron Microscope and for dentin permeability. The samples were photographed using Stereomicroscope. Image analysis software was used for indicating degree of occlusion and the depth of dye penetration. The data were analyzed using two-way ANOVA and Turkey’s HSD test. The significance level was set at p ≤ 0.05. Results: There was significant difference observed between Ca2Po4 @MSN nanoparticles and NHAp compared to (MSN alone) group but there was insignificant difference between groups (Ca2Po4@MSN) and (NHAp) in dentinal tubules occlusion and permeability. Conclusion: (Ca2Po4@MSN), MSN alone and NHAp are valuable tools to enhance dentinal tubules occlusion and permeability of desensitizing dentin.
Al-Azhar Dental Journal for Girls
Al-Azhar University, Faculty of Dental Medicine, Girls Branch
2537-0308
8
v.
1-C
no.
2021
19
26
https://adjg.journals.ekb.eg/article_141997_01a5e6a1a4eec563303305b228001eeb.pdf
dx.doi.org/10.21608/adjg.2021.14176.1183
The Remineralizing Potential of Some Natural Materials Alone or Combined with Zamzam water on Demineralized Enamel
Reham
Abdo
Dentist at ministry of health, Egypt
author
Maha
Niazy
Professor of Operative dentistry department, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt.
author
Nevin
Gad
Lecturer of Operative Dentistry, Faculty of Dental Medicine for Girls, AL-Azhar University, Cairo, Egypt.
author
text
article
2021
eng
Purpose: This study was designed to investigate the remineralizing potential of some natural materials (Honey, Whey extract, Zamzam water) versus synthetic product (fluoride tooth paste) on demineralized enamel. Materials and methods: A total of 40 premolars were extracted from 11-14 years old patients. Teeth were washed with distilled water to remove debris; and stored in distilled water contain 0.1% mg thymol. Forty samples were sectioned into two parts (buccal and lingual) then divided into four main groups (20 each) according to materials used; A1: Ginger & honey, A2:Whey extract, A3:Zamzam water & ginger and A4:Fluoride tooth paste. The four groups were further subdivided into two subgroups according to the time of assessment; B1: after 20 days and B2: after 40 days. All samples were treated by demineralizing solution Coca-Cola for 8 minutes, then the samples were mounted and tested materials were applied. Samples were examined with polarized light microscopy. Results: After 20 days, the results revealed that the highest mean value of microhardness was recorded for ginger& zamzam water (273.39), followed by whey extract (256.63), followed by Ginger & honey groups (249.20) while Fluoride group showed the lowest mean of microhardness (219.56). This difference was statistically significant. After 40 days, the results revealed that the highest mean value of microhardness was recorded for Ginger & Zamzam water (266.89), followed by Ginger & honey (260.39), followed by Whey extract group (251.16) while Fluoride group showed the lowest mean of microhardness (226.44). This difference was statistically significant. Conclusion: Natural materials have remineralizing effect on enamel of tooth.
Al-Azhar Dental Journal for Girls
Al-Azhar University, Faculty of Dental Medicine, Girls Branch
2537-0308
8
v.
1-C
no.
2021
27
33
https://adjg.journals.ekb.eg/article_141996_685c7d4c68df59231b343564e3e84f52.pdf
dx.doi.org/10.21608/adjg.2020.14199.1184
Evaluation of Coconut Oil Pulling vs. Whitening Mouthwash as Home Teeth Whitening Methods
Shahad
Rajab
Internship Dentist, Faculty of Dentistry, Umm Al-Qura University, Kingdom of Saudi Arabia.
author
Lujain
Al-Hindi
Internship Dentist, Faculty of Dentistry, Umm Al-Qura University, Kingdom of Saudi Arabia.
author
Sahar
Elmarsafy
Assistant Professor of Operative Dentistry, Faculty of Dental Medicine for Girls, Al-Azhar University, Egypt and Faculty of Dentistry, Umm Al-Qura University, Kingdom of Saudi Arabia
author
text
article
2021
eng
Purpose: This study was aimed to evaluate whitening efficacy, tooth sensitivity, and soft tissue irritation of coconut oil pulling as a home whitening method compared to an over-the-counter whitening mouthwash. Material and Methods: A randomized controlled clinical study was done on 60 females at Umm Al-Qura University, Faculty of Dentistry. The participants were divided into two main groups (n=30), to test two whitening agents; Study Group “Coconut Oil Swish” and Control Group “Crest 3D White”. Color measurement was done using the VITA Easyshade® Advance device at three times; the baseline, after one week and after two weeks of whitening. Pain assessment “ tooth sensitivity & soft tissue irritation” was done by utilizing the Pain Rating Scale “Wong-Baker FACES”. Results: The results in this study revealed no significant difference between lightness of the both group but the color differences (ΔE1 & ΔE2) in the Crest 3D White (control group) were scientifically higher than in the Coconut Oil Swish (study group). Regarding the pain assessment, a significant difference in pain scores was found between the two groups as Coconut Oil Swich (study group) recorded lower pain score than Crest 3D White (control group). Conclusion: Although the Coconut oil pulling revealed a whitening efficacy after two weeks of use; the whitening mouthwash that contains 1.5% hydrogen peroxide recorded higher color change at one- or two-weeks use. Coconut oil pulling causes less tooth sensitivity and/or soft tissue irritation during regular use when compared to the whitening mouthwash that contains 1.5% hydrogen peroxide.
Al-Azhar Dental Journal for Girls
Al-Azhar University, Faculty of Dental Medicine, Girls Branch
2537-0308
8
v.
1-C
no.
2021
35
44
https://adjg.journals.ekb.eg/article_141988_54767288fc88724ee9a44a0831567ff8.pdf
dx.doi.org/10.21608/adjg.2020.32845.1269
The Effect of Liner Placement under Bulk-Fill Resin Composite Restorations on Cuspal Deflection in Maxillary Premolar Teeth.
Ahmed
Bayoumi
Assistant Lecture of Operative Dentistry Department, Faculty of Dentistry, Badr University, Cairo, Egypt.
author
Maha
Niazy
Professor of Operative Dentistry, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt.
author
Randa
Hafez
Professor of Operative Dentistry, Faculty of Oral and Dental Medicine, Cairo University, Cairo, Egypt.
author
text
article
2021
eng
Purpose: This study investigated the cuspal deflection in premolar teeth restored with different bulk-fill resin composites with or without using a liner. Materials and Methods: 60 extracted human upper premolar teeth were used. The samples in this study were divided into three main groups (20 samples for each) according to the materials used; Each group was subdivided into two subgroups according to presence of liner. Standardized large MOD cavities were prepared. The distance between two reference points on cusp tips was measured before the restoration using a universal microscope. Then the teeth were restored with different bulk-fill resin composites (Filtek bulk fill, X-tra fil bulk fill and Activa Bioactive Restorative Material) with and without a liner (Activa Bioactive base/ liner). Second reading of cuspal deflection was measured 15 min after the completion of restorations. All samples were subjected to thermal cycling using thermal cycler machine. Then the third reading of cuspal deflection was measured. The data were statistically analyzed with Kolmogorov-Smirnov and Shapiro-Wilk tests. Results: no statistically significant difference was found between the mean cuspal deflection of the three composites and cuspal deflection without liner showed statistically significantly higher mean value than with liner. Conclusion: The placement of Activa Bioactive base/liner beneath the bulk-fill resin composite restorations decreased cuspal deflection.
Al-Azhar Dental Journal for Girls
Al-Azhar University, Faculty of Dental Medicine, Girls Branch
2537-0308
8
v.
1-C
no.
2021
45
53
https://adjg.journals.ekb.eg/article_141986_44d47d260f0b9c04d991f5671ed5985c.pdf
dx.doi.org/10.21608/adjg.2020.35680.1276
Effect of Using Boswellia Sacra Extract as Final Irrigant on Removal of Smear Layer
Nehad
ahmad
Lecturer of Oral Biology, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt.
author
Hemat
Elsheikh
Lecturer of Endodontics, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt.
author
Maha
Elhousiny
Lecturer of Endodontics, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt.
author
text
article
2021
eng
Purpose: To evaluate the impact of 10% Boswellia sacra water extract (B. sacra) as a final irrigant on smear layer removal consequent to primary irrigation with 2.6% sodium hypochlorite (NaOCl). Material and Methods: Thirty-six palatal &distal roots from extracted maxillary & mandibular molars have being instrumented and categorized into 3 experimental groups depending on the final irrigant used: (12 samples each), Group I: irrigated with 10% B. sacra extract. Group II: irrigated with 17% EDTA. Group III: control group irrigated with sterile saline. Irrigation was performed with 5ml of test substances for 1 minute. Scanning electron microscopic analysis was performed to assess smear layer removal on the coronal, middle, and apical portion for each root canal. Results: no statistically significant difference between using 10% B. sacra extract & 17% EDTA for smear layer removal at the entire root canal levels (P=0.000). However, there was statistically significant difference between tested irrigant (10% B. sacra extract & 17% EDTA) compared to control group. Comparison of the capability to remove smear layer among different root canal levels for each group showed a significant difference in smear layer removal on coronal and apical part for all assessed groups. Conclusion: The current in-vitro study demonstrated that 10% B. sacra water extract have a chelating potential similar to that of EDTA 17%. Boswellia sacra as natural product is a promising chelating agent.
Al-Azhar Dental Journal for Girls
Al-Azhar University, Faculty of Dental Medicine, Girls Branch
2537-0308
8
v.
1-C
no.
2021
55
63
https://adjg.journals.ekb.eg/article_141985_d52801c8a6892dccaf2e284c65408157.pdf
dx.doi.org/10.21608/adjg.2021.39274.1285
Evaluation of the Retention of Two Different Retention Mechanisms (Nylon Caps and Retention Sil ) in Locators Retained Implant Mandibular Over-Denture. A Randomized Clinical Trial (Rct)
Doaa
Rostom
Lecturer in Department of Prosthodontics, Faculty of Dentistry, Cairo University, Cairo, Egypt
author
Nora
Sheta
Assistant Professor in Department of Prosthodontics, Faculty of Dentistry, Cairo University, Cairo, Egypt
author
text
article
2021
eng
Purpose: to evaluate the retention of two different retention mechanisms (nylon caps and retention sil) in locators retained implant mandibular overdenture. Materials and methods: This randomized control trail was carried on twelve completely edentulous patients who received two mandibular implant in the cuspid region bilaterally with locators abutments. The patients were randomly divided into 2 equal groups at the time of implant loading. Group I: overdentures were pickup with conventional metal housing and nylon caps, Group II: overdentures were pickup with silicone housing retention sil, Forcemeter digital device was used to evaluate the retention of the 2 groups during the follow up period at the time of loading ,three, then six month later. Results: The results revealed that there was a statistical significance difference between the 2 groups with higher retention value for direct pick up metal housing and nylon cap group 1 .While there was no statistical significance difference within each group. Conclusion: Retention sil silicon housing is no longer reliable technique for retaining implant assisted overdenture mandibular.
Al-Azhar Dental Journal for Girls
Al-Azhar University, Faculty of Dental Medicine, Girls Branch
2537-0308
8
v.
1-C
no.
2021
65
70
https://adjg.journals.ekb.eg/article_141983_0a9c081f76bb6309af194787daae3f8d.pdf
dx.doi.org/10.21608/adjg.2020.42237.1294
The Synergetic Effect of Silver Diamine Fluoride with Potassium Iodide and Grape Seed Extract on Dentin Remineralization
Fatma
Hussein
Lecturer of Operative Dentistry, Faculty of Dental Medicine for Girls, AL-Azhar University Cairo, Egypt.
author
Sara N.
Hashem
Lecturer of Pedodontics and Oral Health, Faculty of Dental Medicine for Girls, AL-Azhar University, Cairo, Egypt.
author
Safaa
Elsayed
Lecturer of Pedodontics and Oral Health, Faculty of Dental Medicine for Girls, AL-Azhar University, Cairo, Egypt.
author
text
article
2021
eng
Purpose: This study was conducted to evaluate the synergetic effect of using silver diamine fluoride containing potassium iodide and grape seed extract on dentin microhardness. Materials and Methods: Sixty freshly extracted human deciduous second molars were enrolled in this study. Sixty dentin discs were cut from the crown and were randomly divided into four groups according to the applied treatment after dentin demineralization, (15 samples each). In the first group, samples were received no treatment, only stored in artificial saliva (positive control), in the second group, samples were treated with silver diamine fluoride containing potassium iodide only, in the second group, samples were treated with grape seed extract only (GSE), in the third group, samples were treated with silver diamine fluoride containing potassium iodide (SDF), whereas in the fourth group, samples were treated with combined therapy of grape seed extract followed with silver diamine fluoride containing potassium iodide (GSE+SDF). Microhardness measurements were taken for each dentin disc at baseline, after demineralization, and after treatment. Results: There was a statistically significant increase in dentin microhardness after each treatment as compared to the demineralized dentin microhardness. The mean percent change of dentin microhardness was statistically significant increased in GSE, SDF, and GSE+SDF groups when compared to the control group. Conclusions: Considering the limitations of this study, monotherapy of GSE, SDF solution, and their combination can be recommended to enhance the micro-hardness of demineralized dentin. SDF applications after GSE improved the micro-hardness of demineralized dentin when compared to the monotherapy of each treatment.
Al-Azhar Dental Journal for Girls
Al-Azhar University, Faculty of Dental Medicine, Girls Branch
2537-0308
8
v.
1-C
no.
2021
71
80
https://adjg.journals.ekb.eg/article_141982_5e530f97278dfc52754290cbb3d28d63.pdf
dx.doi.org/10.21608/adjg.2021.43369.1296
Patient Satisfaction, Retentive Characteristics and Masticatory Efficiency in Maxillary Single Denture Wearers with Different Denture Bases: A Randomized Crossover Clinical Trial
Neveen
Abd El Rahim
Assistant Professor of Removable Prosthodontics, Faculty of Dental Medicine for Girls, Al- Azhar University, Cairo, Egypt, Associate Professor of Removable Prosthodontics, College of Dentistry, Taibah University, Medina, Saudi Arabia.
author
text
article
2021
eng
Purpose: To evaluate patient satisfaction, the retentive characteristics, and the masticatory efficiency in maxillary single denture wearers with 3 different denture bases. Material and Methods: 40 patients; 10 dentate (control group (GC)) and 30 completely edentulous maxillary ridges patients (43-56 years) were selected for this study. The maxillary completely edentulous patients were divided into 3 groups randomly; 10 patients each and received single dentures; Group I (GI) received conventional heat cured acrylic resin (AR) followed by thermoplastic acrylic resin (TAR) then thermoplastic nylon (TN) denture base (GI:AR/TAR/TN), (GII:TAR/TN/AR) and (GIII:TN/AR/TAR). Patient satisfaction, the retentive characteristics and the masticatory efficiency were evaluated 3 months after delivery of each single denture. Results: 27 out of 30 patients had age of (mean 50 ± 3.7 years) accomplished the study. Statistically significant differences were observed in comfort and appearance, p≤ 0.05. No statistically significant differences were observed in phonetics, pain, or ease of cleaning of maxillary single denture, p>0.05. Statistically significant differences were observed in the retentive forces between (AR, TAR and TN), p≤ 0.05 except between (TN and TAR), p>0.05. Statistically significant differences were observed in the masticatory efficiency between (GC, AR, TAR and TN), p≤ 0.05 except between (TAR and TN), p>0.05. Conclusions: Maxillary single dentures with TN denture bases showed the advantage over TAR and AR denture bases in terms of comfort and appearance. Retention forces of TN and TAR were comparable and higher than that of AR denture bases. Type of denture base does not influence the masticatory efficiency of maxillary single denture wearers.
Al-Azhar Dental Journal for Girls
Al-Azhar University, Faculty of Dental Medicine, Girls Branch
2537-0308
8
v.
1-C
no.
2021
81
90
https://adjg.journals.ekb.eg/article_141981_0bb616aa3e0529fc75eac18db78ab14a.pdf
dx.doi.org/10.21608/adjg.2020.44524.1299