Comparison Between Color Stability and post bleaching hypersensitivity of Different Bleaching Protocols – Randomized single-blinded Controlled Clinical Trial
Hadeel
Alghonaimy
B.D.S Faculty of Oral and Dental Medicine, Misr International University
author
Ahmed
fayed
Lecturer of Operative dentistry, Faculty of oral and dental medicine Misr International University
author
Inas
Elzayat
Assistant professor of Operative dentistry, Faculty of oral and dental medicine Misr International University
author
Adel
Khairy
Professor of Conservative dentistry faculty of dentistry Cairo university
author
text
article
2021
eng
Objective: The aim of the study was to investigate color change, color stability and post bleaching hypersensitivity after performing 3 bleaching protocols, (LASER-activated, light-activated and chemically-activated) at different time intervals. Methods: Patients were randomly assigned into three treatment groups (n=13). Group A received laser bleaching (J.W. Power Bleaching NEXT, 35 % hydrogen peroxide), group B received light-activated bleaching (Philips ZOOM, 25% hydrogen peroxide), and group C received chemical activated bleaching Dash Philips, 30% hydrogen peroxide). Each group received the treatment according to the manufacturer’s recommendations, followed by the desensitizing agent of each kit. Outcome assessment was performed for teeth shade and post bleaching hypersensitivity preoperatively, immediate, three months, and six months post-operatively using a spectrophotometer (Vita Easyshade, Vivadent, Germany). Results: The study showed that there was no significant difference in color change between the three tested groups. LASER-activated bleaching protocol showed no significant difference in median ∆E throughout the study. Light activated bleaching showed decrease in median ∆E three to six months while in chemical-activated bleaching from zero to three months. Post-bleaching hypersensitivity, results showed no significant difference between the three tested groups. Conclusion: All three bleaching methods can be used upon individual’s preference. LASER-activated bleaching group showed superior color stability over time. It can be satisfactory for patients seeking good results with reduced chair time. Keywords: bleaching, post bleaching hypersensitivity, laser, color stability
Egyptian Dental Journal
The Egyptian Dental Association (EDA)
0070-9484
67
v.
4
no.
2021
3663
3676
https://edj.journals.ekb.eg/article_202219_176f4c4b33a7d3346e0b3cc8addbf82d.pdf
dx.doi.org/10.21608/edj.2021.78326.1654
The Effect of Combined Passive Ultrasonic Irrigation and XP–ENDO Finisher on Bacterial Biofilm using Confocal Laser Scanning Microscopy: a comparative study
Merhan
ELgharbawi
MSc in Endodontics-Ain Shams University, Cairo, Egypt
author
Ahmed
Hashem
Professor of Endodontics- Head of Department of Endodontics, Ain Shams University, Cairo, Egypt
author
Tarek
Abdelaziz
Lecturer of Endodontics- Ain Shams University, Cairo, Egypt
author
text
article
2021
eng
Introduction: This study was to compare the effect of combining agitation techniques on bacterial biofilm eradication to their effect separately. Methods and Materials: Cleaning and shaping was performed on human premolars then divided randomly to four groups: passive syringe irrigation, passive ultrasonic irrigation (PUI) , XP- endo Finisher (XPF) (FKG Dentaire, Swiss Endo, Switzerland) and combined (PUI and XPF). Bacterial biofilm was evaluated using Confocal Laser Scanning Microscope (CLSM). Two-way mixed model ANOVA to evaluate different tested variables along with interactions . Pairwise t-tests with Bonferroni correction compared main and simple effects. The statistical significance level was set at P < 0.05. Results: There was no significant difference on combining agitation techniques (PUI and XPF) in comparison to single technique agitation. PUI showed highest significance in comparison to other irrigation techniques. Regardless of agitation technique apical third showed highest percentage of dead bacterial followed by middle and coronal thirds. Conclusion: Complete eradication of bacterial biofilm is impossible. Regardless of the agitation technique used bacterial elimination is better in comparison to passive syringe irrigation.
Egyptian Dental Journal
The Egyptian Dental Association (EDA)
0070-9484
67
v.
4
no.
2021
3677
3684
https://edj.journals.ekb.eg/article_202221_d6552b81994342ef3eebd20561d40d72.pdf
dx.doi.org/10.21608/edj.2021.79867.1670
Effect of Three In-Office Bleaching Systems on Color Stability of Nanofil Resin Composite Restorations
Rabab
Mehesen
Lecturer of Conservative Dentistry, Faculty of Dentistry, Mansoura University, Egypt
author
text
article
2021
eng
Objective: To evaluate the influence of in-office bleaching on the color stability of dental restorative materials. Materials and Methods: Forty five discs (n = 15) measure 10 mm in diameter and 2 mm thick were prepared from nanofil composite (Filtek Z350, shade A2). Specimens were bleached as follow group A (Opalescence Boost), group B (Philips dash), and group C (Philips Zoom) according to the manufacturer’s instructions. The Commission Internationale de L’Eclairage (CIE 𝐿∗, 𝑎∗, 𝑏∗) system was chosen for image processing. Results: Statistical analysis was performed with one way ANOVA, and student’s test with a 𝑃 value of ≤ 0.05. The three bleaching materials showed no significant color changes of (Δ𝐸) with clinical color change. The color parameters (𝐿∗, 𝑎∗, 𝑏∗) showed significant color changes. Conclusions: The bleaching gels had influences on color and whiteness of resin composites which clinically perceived. Clinical Significance: the existing composite restorations will not match the natural tooth color after bleaching, and their replacement may be required.
Egyptian Dental Journal
The Egyptian Dental Association (EDA)
0070-9484
67
v.
4
no.
2021
3685
3691
https://edj.journals.ekb.eg/article_202223_19c5454336fdcd706f0bbd8e57864a5c.pdf
dx.doi.org/10.21608/edj.2021.81003.1678
Biomimetic Mineralization Approach of Dentin Hypersensitivity in Patients with Early Non-Carious Cervical Lesions.
yasmin
Hamouda
Assistant Lecturer of Restorative Dentistry Department, Faculty of Dentistry, Tanta University
author
Hussein
Elsayed
Professor of Restorative Dentistry, Faculty of Dentistry, Tanta University, Egypt
author
Wedad
Etman
Professor of Restorative Dentistry, Faculty of Dentistry, Tanta University, Egypt
author
text
article
2021
eng
Objective: to evaluate the efficacy of non-invasive procedures through biomimetic mineralization of a fluoride gel, bioactive glass materials with and without fluoride and self-organizing biomimetic peptides in the treatment of dentinal hypersensitivity due to early non-carious cervical lesions. Materials and methods: Twenty-eight patients with self-reported history of dentin hypersensitivity were evaluated sequentially for evidence of erosion, abrasion or gingival recession at facial cervical region. Patients were randomly distributed into four treatment groups of seven patients each according to the type of the treatment (group I: Elmex Gele'e, group II: BioMin™ F, group III: BioMin™ C group IV: CurodontTM D’senz). The teeth were subjected to five follow up periods (baseline, after 3,6,9 and 12 weeks) and assessed in response to evaporative air-blast stimulus utilizing Schiff Sensitivity and Visual Analogue Scales. Electrical test was performed utilizing electrical pulp tester. The extent of tubule occlusion was examined under scanning electron microscope using negative replica of randomly selected patients. Results: All the tested groups showed different degrees of relieving dentinal hypersensitivity symptoms. The difference between the studied groups was statistically significant. Under SEM, group II, III and IV showed complete tubule occlusion. However, group I showed partial tubule occlusion. Conclusions: Elmex® gelée, BioMin™ F, BioMin™ C and Curodont™ D’senz were effective to manage dentin hypersensitivity related to early non-carious cervical lesions based on the biomimetic mineralization concept that has focused on permanent management of dentin hypersensitivity. Keywords: Fluoride, Bioactive glass, self-organizing biomimetic peptides, non-carious cervical lesions, dentin hypersensitivity.
Egyptian Dental Journal
The Egyptian Dental Association (EDA)
0070-9484
67
v.
4
no.
2021
3693
3710
https://edj.journals.ekb.eg/article_202224_c76cb681921e1dbeb4ed81379232e276.pdf
dx.doi.org/10.21608/edj.2021.81588.1684
Impact of different instruments metallurgy on Apical extrusion of debris and fracture resistance: A comparative invitro study
Heba
Elasfouri
Associate Professor of Endodontics, Endodontic Department, Faculty of Dentistry, Cairo University, Egypt
author
Marwa
Bedier
Associate Professor of Endodontics, Endodontic Department, Faculty of Dentistry, Cairo University, Egypt
author
text
article
2021
eng
Abstract: The purpose of this research was to compare apical debris extrusion and fracture resistance of teeth prepared with OneCurve, WaveOne Gold, or ProTaper Universal. Materials and Methods: Mandibular premolars were prepared with OneCurve, WaveOne Gold, or ProTaper Universal. In the experimental model, debris was recovered by apical section of the root washing with distilled water. The Eppendorf tubes were weighed after 15 days of storage to establish the overall weight of the tubes, including the extruded debris. The dry weight of the ejected material was then computed. After root canal obturation, the apical root ends were trapped in the acrylic up to 2 mm below the cementoenamel junction. The fracture force was calculated and given in Newtons. A one-way ANOVA test was used to compare more than two groups, followed by a Tukey post hoc test. The significance level was set at P≤ 0.05. Results: The results revealed a statistically significant difference in extruded debris between OneCurve, WaveOne Gold, and ProTaper Universal (P <0.05), as well as a statistically significant difference in the load required for vertical root fracture between the negative control and OneCurve, WaveOne Gold, and ProTaper Universal (P <0.05). Conclusion WaveOne Gold had the lowest weight value of debris extrusion, whereas ProTaper Universal had the most. Negative control had the highest load, followed by WaveOne gold and One Curve, and finally ProTaper Universal.
Egyptian Dental Journal
The Egyptian Dental Association (EDA)
0070-9484
67
v.
4
no.
2021
3711
3718
https://edj.journals.ekb.eg/article_202225_9bc5839c1f6436e78372db4129bf711c.pdf
dx.doi.org/10.21608/edj.2021.81917.1686
Post-Operative Pain after Single-Visit Endodontic Treatment Using Different Root Canal Irrigation Activating Techniques
Ahmed
Salim
Instructor, Endodontics, Faculty of Dentistry, Tanta University
author
Abeer
Darrag
Professor, Endodontic Department, Faculty of Dentistry, Tanta University
author
Walaa
Ghoneim
Assistant Professor, Endodontic Department, Faculty of Dentistry, Tanta University
author
text
article
2021
eng
Aim: To clinically evaluate the effect of different irrigation activation techniques (needle irrigation, passive ultrasonic irrigation (PUI) and EndoVac) on post-operative pain after single-visit endodontic treatment. Materials and methods: Thirty patients aged between 16 and 40 years requiring endodontic therapy of asymptomatic vital/non vital maxillary central or canine teeth were selected for this study. In all cases, root canal treatment was done is single-visit in which root canals were prepared using nickel-titanium ProTaper Universal rotary system in crown down manner up to master apical file size F4 or F5 according to the initial apical canal size. Irrigation was done using 2.5% NaOCl. Patients were randomly assigned into three groups according to the final irrigation activation method, group 1 (control group) needle irrigation, group 2 PUI and group 3 EndoVac system. Obturation was done using cold lateral compaction technique. Post-operative pain was assessed after 6, 12, 24, 48 hours, one week and two weeks respectively. Post-operative pain evaluation was done using Visual Analogue Scale (VAS). Results: EndoVac group showed the least post-operative pain values while needle irrigation group showed the highest values. This was statistically significant at 6 and 48 hours time intervals. PUI group showed lower pain values than needle group and this was significant at 48 hours time interval. In all groups the intensity of post-operative pain decreased over time. Conclusion: EndoVac system and PUI reduce post-operative pain after single-visit endodontic treatment than needle irrigation in the first 48 hours.
Egyptian Dental Journal
The Egyptian Dental Association (EDA)
0070-9484
67
v.
4
no.
2021
3719
3730
https://edj.journals.ekb.eg/article_202227_f06d305c44d71757ee803547a1915050.pdf
dx.doi.org/10.21608/edj.2021.82422.1690
“Assessment of marginal adaptation of two different root canal sealers using an innovative irrigant: An in vitro study”
lamiaa
Ibrahim
Associate Professor of Endodontics, Fayoum University
author
text
article
2021
eng
(NaOCl) and (EDTA) 17 are the most commonly used irrigants. The active chlorine part in NaOCl that is responsible for its antimicrobial and dissolving activity was greatly reduced when mixed with EDTA. Recently, Dual Rinse HEDP has been proposed as an endodontic irrigant with the ability to remove the smear layer without affecting the antimicrobial and dissolving effect of NaOCl. Epoxy resin and bioceramic sealers are self-adhesive sealers that provided similar acceptable results when tested.. Aim: To compare the efficacy of an innovative additive mixed with (NaOCl) on the marginal adaptation of two root canal sealers to the standard irrigation protocol of using (NaOCl) and 17% EDTA. Material & Methods: Forty extracted single roots teeth were endodontically accessed and canal enlarged using ProTpaer Next up to size X4. Samples were divided into four groups: Group1irrigated with 3% NaOCl and EDTA obturated using Adseal Group 2 irrigated with 3% NaOCl and HEDP; obturated using Adseal Group3 irrigated with 3% NaOCl and EDTA obturated using Endoseal Group 4 irrigated with 3% NaOCl and HEDP; obturated using Endoseal The samples were obturated using ProTaper Next gutta percha cone size X4and subjected to (SEM) evaluation and statistical analysis. Results: Groups 3&4 obturated using Endoseal showed significantly less marginal gaps in comparison to Groups 1&2 obturated with Adseal sealer regardless of the irrigation protocol used. Conclusion: it could be concluded that Endoseal MTA provided better adaptation to root canal walls regardless of the irrigation regime.Also Adseal showed better adaptation when NaOCl & HEDP were used
Egyptian Dental Journal
The Egyptian Dental Association (EDA)
0070-9484
67
v.
4
no.
2021
3731
3739
https://edj.journals.ekb.eg/article_202230_86c1567e729ff936f5fd89e3325de778.pdf
dx.doi.org/10.21608/edj.2021.84175.1705
Fluoride Release and Recharging Ability of Glass Ionomer Cement Incorporating Hydroxyapatite Nanoparticles
Nermin
Mahmoud
Lecturer of Operative Dentistry Department, Faculty of Dentistry, Minia University
author
Asmaa
Metwally
Lecturer of Biomaterial, Faculty of Dentistry, Minia University
author
text
article
2021
eng
Aim: The purpose of this study was to evaluate fluoride release and recharging ability of glass ionomer cement incorporating hydroxyapatite nanoparticles. Materials and methods: Hydroxyapatite nanoparticles (NHA) were prepared by wet chemical method, the experimental material powder (GIC- NHA hybrid) was made by combining different weight percent (1%, 5% and 10%) of nano-hydroxyapatite (NHA) powder with GIC powder. Forty disks were prepared and divided into 4 groups, ten specimens from each tested material (n=10), Control group standard GIC, GIC with 1% NHA, GIC with 5% NHA and GIC with 10% NHA. Each specimen was placed in a plastic tube containing 1 ml deionized water, stored at 37°C in an incubator and measurements of fluoride release were determined one day, one week, two week and one month using multi-parameter bench photometer. For evaluation of recharge ability, re-fluoridation of each tested disc was carried on day 30 after measurement of fluoride release and the previous procedures of fluoride release measurements were repeated again. Results: before and after recharge there was a statistically significant difference in the mean value of fluoride ion release between the control and (1%) groups, as well as a statistically significant difference between the control group and both (5% and 10%) groups, with the highest mean value recorded in (10%) group. Between the different testing intervals used in the study, there was a statistically significant difference where (P<0.001). Conclusion: incorporation of 10% nano-hydroxyapatite particles within glass ionomer cement increased fluoride ion release from GIC and its recharging ability.
Egyptian Dental Journal
The Egyptian Dental Association (EDA)
0070-9484
67
v.
4
no.
2021
3741
3749
https://edj.journals.ekb.eg/article_202231_51afc4cbeddb8a3ff0247961e6aee07a.pdf
dx.doi.org/10.21608/edj.2021.89027.1732
Comparative assessment of apically extruded debris using Protaper Next, Hyflex CM and EdgeFile X7 nickel titanium instruments (An in vitro Study)
Adel
AbdelWahed
Endodontic department- Faculty of oral and dental medicine- Future University
author
text
article
2021
eng
Aim: To compare the amount of extruded debris with three endodontic NiTi engine driven systems, Protaper Next, Hyflex CM and EdgeFile X7. Material and Methods: A total number of 42 freshly extracted human premolars were selected. Teeth were divided randomly into three equal groups (14 teeth each group) according to type of Ni-Ti rotary file system; (A) Protaper Next, (B) Hyflex CM and (C) EdgeFile X7. Standard Access cavity prepared and checked for patency using K file #10 and #15. Root canal instrumentation on the single canal lower premolars was done. Debris was collected after root canal instrumentation in pre-weighed Eppendorf tubes. The Eppendorf tubes were weighed 2 times on the analytical balance. First weight: Before instrumentation. Second weight: After evaporation of moisture and irrigant and incubation. Welch test was used for comparison between the three groups. Results: There was no statistically significant difference between the amounts of debris extrusion of the three groups Conclusion: All endodontic rotary instruments tested produced apical extrusion of debris.
Egyptian Dental Journal
The Egyptian Dental Association (EDA)
0070-9484
67
v.
4
no.
2021
3751
3757
https://edj.journals.ekb.eg/article_202233_13364b24182cbdad098e3ba67fe81324.pdf
dx.doi.org/10.21608/edj.2021.90728.1751
Gingival Microleakage of Dental Amalgam, Bulk Fill Composite Resin and Alkasite Based Composite Restorations in Class II Cavities
Asmaa
Abdallah
Assistant Professor Operative Dentistry Department, Faculty of Dentistry, Mansoura University.
author
text
article
2021
eng
ABSTRACT Objectives: To evaluate and compare gingival microleakage in class II cavities restored with amalgam, bulk-fill composite, and the new alkasite based dental composite (Cention-N). Materials and Methods: Two independant Class II cavities were prepared in forty extracted human third molars. Each molar had a mesial cavity with gingival margin located 1 mm occlusal to the cemento-enamel junction (supra CEJ) and a distal cavity with gingival margin located 1 mm apical to the CEJ (sub CEJ). The prepared molars were randomly assigned to four groups(n=10) according to the restorative material used. Group 1; was restored with dental amalgam. Group 2; was restored with bulk fill dental composite. Group 3; was restored with alkasite based composite without bonding agent. Group 4; was restored with alkasite based composite with bonding agent. The teeth were then thermocycled and immersed in methylene blue solution for 24h. The teeth were mesiodistally sectioned and evaluated under a stereomicroscope at×10 magnification. Dye penetration scorings were recorded, and data were analyzed Kruskal Wallis followed by post-hoc Dunn’s test. Results: Dental amalgam showed the least microleakage and came to be better than the Cention-N and bulkfill dental composite. Microleakage for Cention-N without bonding agent was the highest of all. In terms of supra CEJ and sub CEJ microleakage; the difference for group 1and 3 was nonsignificant but was significant for group 2 and 4. Conclusions: Alkasite based dental composite with bonding agent in class II restorations are not significantly different from Bulk fill composites in terms of microleakage
Egyptian Dental Journal
The Egyptian Dental Association (EDA)
0070-9484
67
v.
4
no.
2021
3759
3765
https://edj.journals.ekb.eg/article_202234_d2dfb00f4cfc0186acc3a6436b2d6370.pdf
dx.doi.org/10.21608/edj.2021.91716.1761
Effect of different non-invasive and micro-invasive treatment modalities of white spot lesions on microhardness of human enamel
Hend
Ahmed
Lecturer of Restorative Dentistry, Faculty of Dentistry, The British University in Egypt
author
text
article
2021
eng
Aim: to investigate effect of different treatment modalities of white spot lesions on microhardness of human enamel. Materials and methods: twenty-four recently extracted sound human maxillary incisor teeth were collected. Teeth were divided at random into six groups (10 each) that were summarized as follows: Group 1: sound unprepared teeth (base line control); Groups 2: demineralized enamel (negative control), Group 3: Demineralized enamel treated by resin infiltration (ICON), Group 4: demineralized enamel treated by bioactive glass (Sylc powder) as remineralizing agent, Group 5: demineralized enamel treated by fluoride varnish ( positive control), Group 6: Demineralized enamel treated by microabrasion. Teeth were embedded in the acrylic blocks with their labial surface flushed with the flat surface of the mold. All specimens except the base line control specimens were demineralized. Each group was treated with the assigned treatment according to manufacturer’s recommendations. The microhardness measurements were performed using a Vickers Microhardness Tester with a Vickers diamond indenter and a 20X objective lens. Results: showed that there was a statistically significant difference in MH values between different study groups (P<0.001). The significantly highest MH mean values were recorded in (microabrasion), (sound enamel), (resin infiltration), and (Sylc powder) groups, which did not differ significantly. This was followed by the mean value of (fluoride varnish) group. While (demineralized enamel) group yielded significantly lowest MH values. Conclusions: among the tested treatment modalities, microabrasion, resin infiltrant as well as bioactive glass air abrasion improved enamel surface microhardness in comparison to fluoride varnish.
Egyptian Dental Journal
The Egyptian Dental Association (EDA)
0070-9484
67
v.
4
no.
2021
3767
3775
https://edj.journals.ekb.eg/article_202236_2b0343942f17b1bb396c48ee2a595307.pdf
dx.doi.org/10.21608/edj.2021.93361.1774
Effect of Dimethyl Sulfoxide wet bonding technique on the durability of resin-dentin bond of an etch-and rinse adhesive system under in-vivo simulating conditions
Shaymaa
Nagi
Department of Restorative and Dental Materials, Oral and Dental Research Division, National Research Centre, Egypt
author
text
article
2021
eng
Purpose: This study assessed the influence of new dimethyl sulfoxide (DMSO) containing pretreatments on the aged resin-dentin micro-tensile bond strength (μTBS) of a two-step etch-and rinse adhesive system. Methods: Occlusal enamel of forty-eight sound molar teeth were ground to expose mid-coronal dentin. Prepared specimens were restored with AdperTM Single Bond2 (SB2) adhesive systems. Prior to the adhesive system application, specimens were randomly assigned into three groups according to dentin pretreatment [no treatment (control group), ethanol wet-bonding (EtOH), or 50 vol% DMSO dissolved in ethanol (DMSO/EtOH)]. Resin composite block was build-up for each specimen. Specimens were stored under simulated IPP 20 mmHg, immersed in artificial saliva at 37 oC for either 24h or 6m. Specimens were sectioned into sticks of 1mm2 for μTBS testing using a universal testing machine. Mode of failure was analyzed using a scanning electron microscope. Three extra sticks from each subgroup were prepared and assessed for the amount of silver nitrate penetration (wt%) using energy dispersive analytical x-ray (EDAX). Data were statistically analyzed by Two-way ANOVA of Variance. Results: (DMSO/EtOH) group revealed the highest statistically significant mean bond strength and the least silver nitrate penetration compared to the (control) and (EtOH) groups at 24h and 6m. Adhesive failures was most predominant for control group at 24h, with increased percentage of mixed failure for EtOH and DMSO/EtOH groups at 24h and 6m. Conclusions: DMSO/EtOH dentin pretreatment improved the immediate and delayed resin-dentin bond.
Egyptian Dental Journal
The Egyptian Dental Association (EDA)
0070-9484
67
v.
4
no.
2021
3777
3786
https://edj.journals.ekb.eg/article_202238_c4eba14be1c1a4bf4f3fb683ccba8df6.pdf
dx.doi.org/10.21608/edj.2021.92295.1768
Assessment of Preheating and Sonic oscillation of Bulk-Fill Resin Composite on Marginal Adaptation of Class II Restorations
asmaa
abdallah
Lecturer, Operative Dentistry Department, Faculty of Dentistry, Mansoura University, Egypt.
author
Tamer
elshehawy
Lecturer, Operative Dentistry Department, Faculty of Dentistry, Mansoura University, Egypt.
author
noha
elwassefy
Professor Assistant, Dental Biomaterials Department, Faculty of Dentistry, Mansoura University, Egypt
author
Marmar
Montaser
Lecturer, Operative Dentistry Department, Faculty of Dentistry, Mansoura University, Egypt.
author
text
article
2021
eng
Objectives: To assess the influence of preheating and sonic oscillation of bulk-fill composite on marginal adaptation of class II restorations. Materials and methods: 30 extracted molars were collected, and standardized compound class II cavities were prepared. Teeth were classified into three groups (n=10) according to placement techniques. Group I, the composite material was placed in bulk to fill the prepared cavity using a plastic filling instrument. Group II, composite syringes were placed in the Therma-Flo device before placement into the cavities. Group III, the composite material was placed in bulk to fill the prepared cavity using a plastic filling instrument then adapted by compothixo oscillating packing instrument. After finishing and polishing, the specimens were subjected to thermocycling. Marginal analysis was carried out using Scanning Electron Microscope at 500 x magnifications. The overall margins were investigated, and the maximum gaps were measured. Results: Although preheated composite produce better marginal adaptation, there was no significant difference between all tested groups. CONCLUSION None of the placement techniques produced gap-free margins. Preheated composite improved marginal adaptation
Egyptian Dental Journal
The Egyptian Dental Association (EDA)
0070-9484
67
v.
4
no.
2021
3787
3794
https://edj.journals.ekb.eg/article_202240_0bfb51aa51f670dff94dbcc85a06483c.pdf
dx.doi.org/10.21608/edj.2021.93792.1776
Comparing the efficacy of EndoSequence Root Repair Material, Biodentine, MTA angelus as retrograde filling in microbial leakage by Confocal Laser Scanning Microscope
Mahmoud
Badr
Lecturer of Endodontics, Faculty of Oral and Dental Medicine, Future University, Egypt.
author
Mohammed
Rokaya
Associate Professor of Endodontics, Faculty of Dental Medicine, Al-Azhar University, Assuit, Egypt
author
text
article
2021
eng
This study aimed to compare the efficacy of EndoSequence ® Root Repair Materia, Biodentine, and MTA angelus® as root end filling in bacterial leakage and confirmed with Confocal Laser Scanning Microscope (CLSM). Methods: 55 maxillary single rooted teeth were used in this study. The teeth were decoronated at 16mm. root canals was prepared by using ProTaper rotary Ni-Ti instruments. Pro-taper F3 size Gutta-percha and AH plus sealer were used for single cone obturation technique. The root resection was done in the apex at 3 mm. The root end cavity was prepared by ultrasonic retro-tips. Samples were divided into 5 groups with 11 samples each according to retrograde cavities filling. Group1(EndoSequence), Group 2 (Biodentine). Group 3 (MTA angelus), Group 4 (Positive control), and Group 5 (Negative control). Dual chamber apparatus was prepared to test the retrograde filling leakage. The Enterococcus Faecalis in Confocal Laser Scanning Microscope under 20X magnification to measures of E. Faecalis penetration depth through retrograde materials. Results: EndoSequence® had better results in bacterial leakage and in penetration depth into the dentinal tubules with statisticallysignificant difference when compared to BiodentineTM and MTA angelus® (p ≤ 0.05). On other hand there was no any statistically significant difference between BiodentineTM and MTA angelus® (p>0.05) with more leakage in dual chamber whereas bacterial penetration into the dentinal tubules in CLSM was measured. Conclusions: EndoSequence showed better results in both bacterial leakage and in bacterial penetration.
Egyptian Dental Journal
The Egyptian Dental Association (EDA)
0070-9484
67
v.
4
no.
2021
3795
3802
https://edj.journals.ekb.eg/article_202242_3930bc5008c5278f6bfbe60690143ad1.pdf
dx.doi.org/10.21608/edj.2021.93872.1777