2024-03-28T12:15:44Z
https://adjg.journals.ekb.eg/?_action=export&rf=summon&issue=1540
Al-Azhar Dental Journal for Girls
ADJ-for Girls
2537-0308
2537-0308
2018
5
1
Effect of Self-ligating on Bone Density and Root Surface in Maxilla and Mandiblec
Ashraf
Shouman
Mai
Attia
Samir
Ibrahim
Effat
Abbas
Osama
Elshal
Mohamed
Ahmed
Objective: This study was designed to evaluate radiographically the effect of passive self-ligating bracket on root surface and bone density in both arches.Patients, materials and methods: The present study was conducted on 20 patients which were divided into two groups; the first group includes 10 adolescent patients aged 13-16 years old and the second group includes 10 adult patients aged 18-21 years old. For each arch of the individuals participating; a quadrant was bonded with passive self-ligating brackets and the other quadrant within the same arch was bonded by conventionalbrackets. Standardized reproducible digital panoramic radiographs for each patient were evaluated preoperatively (T0), 6 months (T1) and 1 year (T2) after beginningthe orthodontic treatment. The four permanent canines were evaluated regarding the root length and bone density. An indirect digital image radiographic system was followed in this study to obtain and evaluate bone density and degree of root resorption. Results: There was no statistical significant difference in bone density and root resorptionchanges of the maxillary and the mandibular arches between both age groups. Conclusions: Passive self-ligating brackets tend to have the same effect on the bone density and root surface of both the maxilla and the mandible.
Self-ligating
Damon
bone density
root resorption
2018
01
01
1
8
https://adjg.journals.ekb.eg/article_7986_3f02f2d2f24d04ff4dfe4f3261773d91.pdf
Al-Azhar Dental Journal for Girls
ADJ-for Girls
2537-0308
2537-0308
2018
5
1
Evaluation of the Rate of Canine Retraction with Two Commercially Available Straight Wire Brackets
Basma
Hasaneen
Samir
Ibrahim
Fatma
Abdelaziz
Objective: This study was to compare the rate of canine retraction with two commerciallyavailable straight wire brackets. Materials and methods: A sample of 10 patientswith an age range from 15 to 18years, requiring orthodontic treatment. The study was designed clinically (split mouth technique) in the same patient right side bonded by Ormco Roth orthodontic brackets while in the left side were bonded byIMD Roth orthodontic brackets . Canine retraction was measured four times every 28 day till completeretraction of canine occurred. Results: the rate of canine retraction was non significantlydifferent from right and left side, also monthly, weekly and daily rate of canine retraction was non significantly different in the right and left side. Conclusion: The rate of Canine retraction using (IMD brackets is insignificantly different from (Ormco)brackets, both of them have the same rate, during the first ,second, third and fourth interval no significant difference on the rate of canine retraction between the 2 groups
tooth movement
canine retraction
Roth brackets
IMD brackets
Ormco brackets
2018
01
01
9
14
https://adjg.journals.ekb.eg/article_7987_1496f4ee23c641f02515cf97d41a0351.pdf
Al-Azhar Dental Journal for Girls
ADJ-for Girls
2537-0308
2537-0308
2018
5
1
Evaluation of Jojoba Oil Efficacy in Endodontic Infection Control
Mohamed
Fayed
Mohsen
El-Deen
Hagar
Bastawy
Mohmed
Sherif
Aim: This study was designed to evaluate the antimicrobial effectiveness of Jojoba-Oil against endodontic pathogens involved in endodontic infection. Materials and methods: Regarding the in vitro part, sterile saline, crude Jojoba-Oil, mixtures of calciumhydroxide powder with sterile saline and calcium hydroxide powder with Jojoba-Oil were tested against selected strains (S.aureus, E.coli, E.faecalis and C.albicans) using agar diffusion method. Zones of inhibition were measured after 24, 48, 72 and 7 days incubation periods. Regarding the in vivo part, a total of forty patients were selectedaccording to specific inclusion and exclusion criteria and randomly divided into four groups (10 each) according to the assigned irrigant and intracanal medicament. Three clinical samples were collected from each patient in each group under strict aseptic conditions for microbiological studies. Results: Ca(OH)2 + Jojoba-Oil group produced the statistically significant largest mean inhibition zone against the selected strains at 24, 48 and 72 hours incubation periods. The in vivo part showed that, chemomechanicalpreparation produced a significant reduction in both bacterial and fungal count in the four experimental groups. In groups using intracanal medication, there was further significant reduction in both bacterial and fungal count compared to non-medicated groups. Conclusions: The combination of calcium hydroxide with Jojoba-Oil as a vehiclehas an antimicrobial activity comparable to calcium hydroxide mixed with saline.
jojoba oil
Calcium hydroxide
endodontic infection control
2018
01
01
15
22
https://adjg.journals.ekb.eg/article_7988_707c11a70369da9486367aaa89fc71c0.pdf
Al-Azhar Dental Journal for Girls
ADJ-for Girls
2537-0308
2537-0308
2018
5
1
Potential Effect of Fibroblast Growth Factor (FGF2) Versus Epidermal Growth Factor (EGF) on Healing of Induced Oral Ulcer in Albino Rats (A Histological and Immunohistochemical Study)
Ola
Dewedar
Mona
Farid
Heba
Adawy
Aim: The aim of the present study was to evaluate the effect of human recombinant Fibroblast growth factor (FGF2) and Epidermal growth factor (EGF) on healing of mechanicalinduced buccal mucosal ulcers in albino rats. Materials and Methods seventy five adult male albino rats (weight 200-250gm) each were used in the study. Rats were divided into 4 groups (group1, group2, group 3 &group 4) : G2 negative control, G3 received FGF, G4 received EGF, then each group was divided into 4 subgroups accordingto the date of scarification at 1,4, 7, 10 days postoperatively ulcers were induced by punch biopsy apparatus (5 mm diameter). Growth factor (FGF or EGF) was applied by using microliter syringe, the specimens were processed for histological and immunohistochemicalanalysis. Results: EGF and FGF promoted proliferation of fibroblast, EGF promoted proliferation of keratinocyte. Conclusion: Both growth factors acceleratewound healing compared with control group. rh FGF restores collagen production, while rh EGF can induce rapid wound healing by accelerating the proliferation of new epithelial cells.
FGF
EGF
Oral ulcers
Wound healing
2018
01
01
23
27
https://adjg.journals.ekb.eg/article_7989_195e738f4aa615acb54b4b6e830d49a4.pdf
Al-Azhar Dental Journal for Girls
ADJ-for Girls
2537-0308
2537-0308
2018
5
1
Effect of Platelet Rich Fibrin on the Healing of Intra-bony Defects: A Clinical Study
Riham
El-banna
Mai
Shafik
Eatemad
Shoreibah
Objectives: The aim of the present study was to evaluate the effect of platelet rich fibrin (PRF) on the healing of intra-bony defects. This evaluation was accomplished Clinically and radiograp- hically on patients.Subjects and Methods: A total of twenty one intra-bony defects in 14 patients were randomly divided into three groups; group A, treated with minced PRF placed insidethe defects and covered with a PRF membrane, group B, treated with minced PRF placed in the defects and covered with a collagen membrane and group C, treated with xenograft placed in the defects and covered with a collagen membrane (control group). Clinical parameters including probing pocket depth (PPD), clinical attachment level (CAL) and radiographic parameters including linear radiographic measurements were measured at day of surgery (baseline) then 6 months post-operatively in all groups.Results: Clinical and radiographic results showed statistically significant differencesbetween baseline and post operatively in all the groups. However inter-group comparisons showed no statistically significant differences after 6 months.Conclusion: The use of PRF as a regenerative material in managing periodontal intrabonydefects resulted in pocket depth reduction, clinical attachment gain and defect fill with comparable results to bone graft and collagen membrane.
Periodontal regeneration
Platelet rich fibrin
intra bony defects
2018
01
01
29
35
https://adjg.journals.ekb.eg/article_7990_c7a890c7a3795e7ac724c84839703f4f.pdf
Al-Azhar Dental Journal for Girls
ADJ-for Girls
2537-0308
2537-0308
2018
5
1
Comparative Study of Implant Supported Overdenture Retained with Two Types of Attachments
Sarah
Elqady
Amany
Abd El-Fatah
Nesreen
El-Mahrouky
Objectives: This study was conducted to compare implant retained mandibularoverdenture with two different attachments (ball and socket and locator).Subject and methods:7 edentulous patients were selected according to certain criteria.Each patient received two platform switched implants placed in the mandibular canine-premolar region bilaterally. GROUP I: Locator attachments were used to retain the implant-supported overdentures. Locator abutments were loaded after 2-3 months. All patients received conventional maxillary dentures. After follow up periods we removedthe attachment with wash period 1month then we used ball and socket attachmentGROUP II. The two groups were evaluated for retention, masticatory efficiency and EMG at 0, 3 and 6 months after loading of each attachment. Results: regarding the effect of time on retention of both groups in ball group there was a significant increase in retention at base line till 3 months and decrease from 3-6 months, while locator group there was increase of retention through all periods. Regarding the effect of time on both groups the masticatory efficiency of both ball and locator group have no significant difference through all periods. Comparing the two groups the masticatory efficiency has no significant difference except on chewing carrots the numbers of strokes till first swallow increase in ball group, and on chewing peanut after 6 months the ball group show higher time till first swallow than locator as well as the time to empty mouth. Regarding the effect of time on both groups the electromyographic activity of both masseterand temporalis muscles has no significant difference through all periods except in locator group decrease the activity of masseter after 3 months. Conclusions: the ball attachment at the beginning has a higher retention quality than locator attachment, by time ball attachment loss some of its retention rather than locator attachment. The electromyographic activities and the masticatory efficiency of temporalis and masseter muscles of both ball attachment and locator attachment were comparable.
Implant overdenture attachment
2018
01
01
37
46
https://adjg.journals.ekb.eg/article_7991_211431de8a5bcb36a798bbd3c0724701.pdf
Al-Azhar Dental Journal for Girls
ADJ-for Girls
2537-0308
2537-0308
2018
5
1
Shear Bond Strength of Low Shrinkage Resin Composite to Resin Modified and Nano-Filled Glass Ionomer Cements
Wael
Jamil
Sahar
Elmarsafy
Objective: This study was designed to assess the shear bond strength between low shrinkage composite to resin-modified and nanofilled glass ionomer cements using different rotary instruments to finish the surface of glass ionomer cements. Materials and Methods: Sixty standardized cylindrical glass ionomer specimens were prepared using a split Teflon mold. They were divided into two main groups (30 specimens each), according to the type of the glass ionomer used (Vitremer RMGI and N100 nanofilled GI). Each group was further subdivided into three subgroups (10 specimens each) according to their surface finish, either cured against mylar strip, finishing the surface with carbide bur and diamond stone. Then they were bonded to low shrinkage resin composite (Feltic P90). The specimens were subjected to shear bond strength testing. The data were collected, tabulated and statistically analyzed. Results: Both carbide bur and diamond stone had statistically significant higher shear bond strength compared to specimens cured against the mylar strip. Statistically significant higher shear bond strength values were recorded with Vitremer RMGI finished with carbide and N100 nanofilled GI finished with diamond stone. Conclusions: RMGI finished with carbide bur and nanofilled GI finished with diamond stone as a base under low shrinkage composite provided the highest shear bond strength results.
Shear bond strength
Low shrinkage composite resin
RMGI
Nanofilled GI
Glass ionomer surface finishing
2018
01
01
47
53
https://adjg.journals.ekb.eg/article_7992_deb5ac0ff4f30e68b0f7a7b228567137.pdf
Al-Azhar Dental Journal for Girls
ADJ-for Girls
2537-0308
2537-0308
2018
5
1
Comparative Study between Resin Nano Ceramic and CAD/CAM Ceramic Regarding Their Fracture Resistance, Microtensile Bond Strength and Fatigue Resistance
Shimaa
El-saeed
Inas
Mohamed
Heba
Eltayeb
Purpose: In an attempt to improve the mechanical properties, industriallyCAD/CAM ceramics blocks have been introduced to dentistry. This study was directed to investigate the influence of the material thickness on the fracture resistance ofCAD/CAM Resin Ceramic and CAD/CAM Ceramic and asses the fatigue resistance of class II mesio-occlusal-distal (MOD) inlays of both materials and compare their micro-tensile bond strength (μTBS) after cementation by two different adhesive resin cements. Materials and Methods: A total of 70 specimens were fabricated. The specimens were divided according to the material used into two main groups (n= 35). Group 1 specimens were fabricated from CAD/CAM Resin Ceramic (Vita Enamic), whereas Group 2 specimens were fabricated from Lithium disilicate glass ceramic (IPS e-max CAD). Specimens of each group were further subdivided into 3 subgroups according to type of testing (microtensile bond strength test, fracture resistance and fatigue resistance tests). Specimens of subgroup of microtensile bond strength test (n=40) were further subdivided into 2 divisions (n=20) according to type of surface treatment (control and sandblasting). Then each division was further subdivided into 2 subdivisions (n=10) according to type of cement used (Rely X Ultimate and multilink N). Furthermore, subgroup of fracture resistance test (n=20) was further divided into 2 division (n=10) according to thickness (0.5 mm and 3 mm). Two-way analysis of variance ANOVA test and three-way analysis of variance ANOVA test of significance were done for comparing variables. Results: For microtensile bond strength, it was found that the highest μ-tensile bond strength value was recorded for Multilink N control subgroup (54.07±7.9 MPa), while the lowest μ-tensile bond strength mean values was for Rely X Ultimate sandblasted subgroup (37.12±2.5 MPa) and IPS e-max CAD. Results revealed that the highest μ-tensile bond strength mean value was recorded for Rely X Ultimate
CAD/CAM ceramic
microtensile bond strength
Fracture resistance
Fatigue Resistance
2018
01
01
55
63
https://adjg.journals.ekb.eg/article_7993_a959b39139e3d3b88ed57aa0afb29087.pdf
Al-Azhar Dental Journal for Girls
ADJ-for Girls
2537-0308
2537-0308
2018
5
1
Maxillary Tissue Changes under Complete Dentures Opposing Two Different Mandibular Implant Support Overdentures
Amany
Abdel-Fattah
Mostafa
Abdel-Ghany
Nesrin
El-Mahrouky
Shadia
El-Sayed
Yasmeen
Al-Mahdy
Aim: The aim of the study was to study the maxillary tissue changes under complete dentures opposing mandibular implant-supported overdenture retained by either two or single midline implant. Material and Methods: Fourteen completely edentulous patients were chosen for this study. Patients were randomly divided into two groups: Group I; Seven patients received mandibular overdenture retained with 2 implants in the canine region bilaterally with ball and socket attachment. Group II; Seven patients received mandibular overdenture retained with single implant in the midline with ball and socket attachment. Clinical and radiographic evaluations were done by measuring the thickness of the soft tissue overlying the anterior maxillary ridge and amount of bone resorption respectively, measured at 2 points 1 cm and 2 cm bilaterally to the midline at time of implant loading, 3, 6, 9 and at 12 months. Results: there was non-significant increase in maxillary mucosa thickness in both groups at both points of measurements. Also, there were posterior radiographic bony changes in maxillary ridge within both groups. There was significant increase in maxillary bony changes in Group II in comparison to Group I. Conclusion: Within the limitations of this study, it was concluded that there was slight increase in the soft tissue thickness overlying the anterior maxillary ridge in each group. But there was slight increase in Group II more than Group I. More bone resorption in posterior region of maxilla was observed in Group II patients.
dental implant
overdenture
Single implant
maxillary bone change
mucosa thickness
2018
01
01
65
77
https://adjg.journals.ekb.eg/article_7994_9bd390a5d6a13b0208732f71d34f2703.pdf
Al-Azhar Dental Journal for Girls
ADJ-for Girls
2537-0308
2537-0308
2018
5
1
Clinical Evaluation of Nano-Hydroxyapatite as Dentin Desensitizer
Shimaa
Ameen
Maha
Niazy
Mohamed
El-yassaky
Wael
Jamil
Mai
Attia
Objectives: This clinical study was conducted to evaluate the efficiency of nano-hydroxyapatite (n-HAp) in reducing dentin hypersensitivity individually or combined with fluoride. Materials and methods: Forty hypersensitive teeth from 10 patients with hypersensitive symptoms were treated using hydroxyapatite nanoparticles (nHAp) gel at different concentrations/ sodium fluoride (NaF) containing according to four treatment groups: Group 1; 15% nHAp + 1% NaF, Group 2; 15% nHAp, Group 3;25% nHAp+ 1% NaF, Group 4; 25% nHAp. The initial sensitivity levels were recorded using a verbal rating scale (VRS) and visual analogue scale (VAS) at the baseline visit. The responses were evaluated at 0, 1 day, 1, 2 and 4 weeks respectively for all groups. Results: There was a high statistical significant differences between pain scores before and after treatment for all treated groups. There was statistically significantly high difference between 25% nHAp and the other groups, as they need 4 applications for complete relief while 25% nHAp needs only 3 applications. Conclusion: Nano-hydroxyapatite with 25% concentration was the most effective in alleviating the hypersensitivity symptoms.
nano-hydroxyapatite
Dentin Desensitizer
2018
01
01
79
87
https://adjg.journals.ekb.eg/article_7995_0a33c04081830f9b87e6307725d4c0c4.pdf
Al-Azhar Dental Journal for Girls
ADJ-for Girls
2537-0308
2537-0308
2018
5
1
The Effect of Nano- ZrO2 and nano-Al2O3 Reinforcement on Flexural and Impact Strength of Repaired Acrylic Denture Base
Yasmeen
Al-Mahdy
Heba
Eltayeb
Purpose: This study was conducted to evaluate the effect of reinforcementof different concentrations of nano-ZrO2 and nano-Al2O3 on the flexural strength and impact strength of repaired acrylic resin denture bases. Materials and Methods: A total of 100 specimens were prepared from heat-polymerized acrylic resin and then they were equally divided for the flexural and impact strength tests. 50 specimens were assigned for each testing group. For the flexural strength testing, metallic rectangular molds with rectangular-shaped (65 mm length x10 mm width x 2.5 mm thickness) were prepared. While specimens for the impact strength testing were prepared using rectangular-shaped molds with dimensions of (50 mm length x6mm width x4mm thickness). The prepared intact specimens were cut vertically in two halves along their long axis. For the flexural and impact strength testing, a repair gap was done. Specimens for each strength test were divided into one control group (specimen repaired with autopolymerizing acrylic resin with no fillers) and two repair groups with 2 concentrations (2% and 5%) of nano-ZrO2 fillers and two repair groups with 2 concentrations (2% and 5%) of nano-Al2O3 fillers. Flexural strength was measured using an Instron mechanical testing machine and impact strength was measured by Izod impact tester. Results: For the flexural strength results, the highest flexural strength was recorded with the 5% nano-ZrO2 fillers repair group followed by the 2% nano-ZrO2 group which also recorded higher significant mean value than the control group. In both nano-Al2O3 groups, there was a highly significant reduction in the flexural strength for both concentrations. For the impact strength results, the highest impact strength was recorded for the 2% nanoZrO2 fillers repair group followed by the 5% nano-ZrO2 group which also recorded higher significant mean values than the control group. In the 2% nano-Al2O3 repair group, there was a non-significant difference in the impact strength mean values compared with the control group. While the repair group reinforced with 5% nano-Al2O3 showed significant reduction in impact strength.Conclusions: The incorporationof nano-ZrO2 into repair resins may improve the flexural and impact strength of the repaired denture base whereas nano-Al2O3 caused reduction of both strengths.
Denture repair
nanofillers
nano-ZrO2
nano-Al2O3
flexural strength
impact strength
2018
01
01
89
100
https://adjg.journals.ekb.eg/article_7996_98676c8e22ae5f6ce3e73956a692742f.pdf
Al-Azhar Dental Journal for Girls
ADJ-for Girls
2537-0308
2537-0308
2018
5
1
The Effect of Different Bar Materials on Stress Distribution in Implant Supported Mandibular Overdenture Supporting Structure. (An in-Vitro Study)
Ehab
Abd-Elhaleim
Maged
Al-Sadaawey
Reda
Ragab
Objective: To study the effect of different bar materials (cobalt chromium & polyetheretherketone)on stress distribution in implant supported mandibular overdenture supporting structure .By using strain gauge analysis. Material and methods: Six bar attachments were made from different materials (cobalt chromium& polyetheretherketone)and were constructed in acrylic model for implant supported mandibular overdenture and determine stress distribution in implant and supporting structure by using strain gauge analysis. Results: Showing No statistically significant differencewas found between (CoCr) bars and (PEEK) bars on stress distribution in implantsupported mandibular overdenture supporting structure when Comparison betweenrecorded microstrains measured with unilateral and bilateral load application.Conclusion: The cobalt chromium bars are subjected to more stresses than polyetheretherketone.Significantly greater amount of stresses are transmitted to the implantswhether unilateral or bilateral in all loading situations. Unilateral loading is more traumatic to the implants and residual ridge compared to bilateral loading.
Bar Materials
Stress distribution
Implant
overdenture
2018
01
01
101
109
https://adjg.journals.ekb.eg/article_7997_0f3afbba5749bff8cf1fee70417d9185.pdf
Al-Azhar Dental Journal for Girls
ADJ-for Girls
2537-0308
2537-0308
2018
5
1
Effect of Oral Rinses on Color Change Behaviour of Three Types of Provisional Fixed Partial Denture Materials
Khaled
Haggag
Muhammad
Abbas
Zainab
EL Sharkawy
Objectives: The present study aimed to comparatively evaluate the color variationsof three different commercially available provisional restorative materials, usingcomputerized spectrophotometry before and after immersion in artificial saliva and three other different mouth rinses Materials and Methods: One hundred and twenty samples (40 of each material; Revotek LC, TempSpan, Jet tooth shade) were prepared in the form of discs (10 mm diameter and 2 mm thickness), and these samples were randomlydivided into 4 subgroups for the solutions; chlorohexidine, Tantum V and Oracin mouth washes and artificial saliva(n=10). The discoloration solutions were changed twice a day throughout the three weeks. The color values (L*,a*,b*) of each specimenwere measured before and after exposure with a Reflective spectrophotometer. Results: regardless to staining solutions, it was shown that TempSpan material group recorded the highest color change mean value (3.68±0.39ΔE) followed by Revotek LC material group mean value (1.56±0.27ΔE) while Jet tooth shade material group recorded the lowest color change mean value (1.4±0.46 ΔE).on the other hand, A. salivarecorded the highest color change mean value (2.78±1.2 ΔE) followed by Tantum V solution mean value(1.72±0.31ΔE) then Oracin solution mean value (1.5±0.4ΔE) while CHX staining solution recorded the lowest color change mean value (1.32±0.4 ΔE). Conclusions:1- All the bis-acryl resins and PMMA-based provisional materials showed clinically perceptible color changes after exposure to oral rinses. 2- Among the three provisional restorative materials, Tempspan was found to be significantly the least color stable material and the least stain was taken up by Jet. 3- There were no significant differences between the discoloration effects of Tantum V, Oracin and Chlorohexidine mouth washes on the three tested provisional materials.
Oral Rinses
Color change
Fixed Partial Denture
2018
01
01
111
120
https://adjg.journals.ekb.eg/article_7998_825a3b52cd66852eb939854dca555f2a.pdf
Al-Azhar Dental Journal for Girls
ADJ-for Girls
2537-0308
2537-0308
2018
5
1
Effect of Thermo-Mechanical Aging on The Marginal Fit of Two Types of Monolithic Zirconia Crowns With Two Finish Line Designs
Khaled
Haggag
Muhammad
Abbas
Hussein
Ramadan
OBJECTIVES: The purpose of this study was to compare the marginal fit of two CAD/CAM monolithic zirconia crowns with two finish line designs after thermo-mechanical aging. MATERIALS AND METHODS: A total of 20 zirconia crowns were divided into two groups Bruxzir and Prettau zirconia (n=10). Each type of zirconiacrowns was divided into two groups according to the finish line design chisel (CH) and deep chamfer (DC) groups (n=5) After cementation of crowns to their correspondingdies, the vertical marginal gap was measured then the all crowns of both groups were subjected to thermo-mechanical aging then the vertical marginal gap was measured again. RESULTS: Statistical analysis showed that. The thermo-mechanical aging significantly increased the vertical marginal gap where DC non-aged Bruxzir recording the lowest mean value (31.41±5.9) and the CH aged Bruxzir recorded the highest mean value (95.28±9.2) as indicated by three-way ANOVA test (F= 23.0741,p=<0.0001<0.05). CONCLUSIONS: Thermo-mechanical aging significantly increasedthe vertical Marginal gap and the deep chamfer finish line preparation is preferredfor construction of monolithic zirconia crowns.
Thermo-Mechanical
Marginal fit
Zirconia Crowns
2018
01
01
121
128
https://adjg.journals.ekb.eg/article_7999_5c2493230d4e8990bf594a8b862ba666.pdf