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El Shahawy OI, Azab MM. Multiple prefabricated zirconia crowns for vital hypoplastic young first permanent molars. An eight-year case report. Int J Paediatr Dent 2024. [PMID: 38449286 DOI: 10.1111/ipd.13173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/16/2023] [Accepted: 02/03/2024] [Indexed: 03/08/2024]
Affiliation(s)
| | - Maha Moussa Azab
- Department of Pediatric Dentistry, Faculty of Dentistry, Fayoum University, Fayoum, Egypt
- Department of Pediatric Dentistry, School of Dentistry, Newgiza University NGU, Giza, Egypt
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Gadallah LK, Safwat EM, Saleh RS, Azab SM, Azab MM. Effect of silver diamine fluoride/potassium iodide treatment on the prevention of dental erosion in primary teeth: an in vitro study. BDJ Open 2023; 9:24. [PMID: 37414762 DOI: 10.1038/s41405-023-00153-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 05/31/2023] [Accepted: 06/05/2023] [Indexed: 07/08/2023] Open
Abstract
INTRODUCTION Dental erosion has a great effect on oral health, when diagnosed it is irreversible, this sets the importance of different preventive measures being investigated against dental erosion. AIM This in vitro study aims to evaluate the effectiveness of silver diamine fluoride and Potassium iodide (SDF-KI) in comparison to casein phosphopeptide-amorphous calcium phosphate fluoride (CPP-ACPF) varnish, sodium fluoride (NaF) varnish, silver diamine fluoride (SDF) alone and deionized water as a control group in the prevention of dental erosion in primary teeth and assessing its staining effect. MATERIALS AND METHODS Forty deciduous teeth enamel specimens were randomly allocated into the five study groups. Tested materials were applied. An erosive challenge was done by immersing the specimens in a citric acid-containing soft drink with pH 2.85, for 5 min, 4 times/day, for 5 days. Changes in surface microhardness, mineral loss, and color change were evaluated besides recording of the surface topography and surface roughness for selected specimens. RESULTS The highest decrease in surface microhardness was recorded in the control group (-85.21 ± 10.60%), with a statistically significant difference (p = 0.002). SDF-KI group (-61.49 ± 21.08%) showed no statistically significant difference when compared to CPP-ACPF, NaF, and SDF groups. For calcium and phosphorous loss, control group was statistically significantly higher compared to the treatment groups (p = 0.003) and (p < 0.001) respectively, while there was no statistically significant difference between the tested treatment groups. The highest mean value for color change was recorded in SDF group (26.26 ± 10.31), followed by SDF-KI group (21.22 ± 12.87) with no statistically significant difference between groups. CONCLUSIONS SDF-KI is as effective as CPP-ACPF, NaF varnishes and SDF in the prevention of dental erosion in primary teeth, there was no statistically significant difference regarding its staining potential.
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Affiliation(s)
- Lamia Khairy Gadallah
- Orthodontics and Pediatric Dentistry Department, National Research Centre, Giza, Egypt
| | - Engie Mohamed Safwat
- Restorative and Dental Materials Department, National Research Centre, Giza, Egypt
| | - Reham Sayed Saleh
- Restorative and Dental Materials Department, National Research Centre, Giza, Egypt
| | - Shereen Musa Azab
- Pharmaceutical Chemistry, Egyptian Drug Authority (EDA) (previous NODCAR), Giza, Egypt
| | - Maha Moussa Azab
- Department Pediatric Dentistry, Faculty of Dentistry, Fayoum University, Fayoum, Egypt.
- Department of Pediatric Dentistry, School of Dentistry, New Giza University NGU, Giza, Egypt.
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El Shahawy OI, Azab MM. Fracture resistance of prefabricated versus custom-made zirconia crowns after thermo-mechanical aging: an in-vitro study. BMC Oral Health 2022; 22:587. [PMID: 36494637 PMCID: PMC9733029 DOI: 10.1186/s12903-022-02628-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 11/29/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Prefabricated zirconia crowns for a young permanent molar is a child-friendly solution for restoring a permanent molar at a young age. This in-vitro study aimed to compare the fracture resistance of prefabricated versus custom-made permanent molar crowns. METHODS 16 identical resin dies were fabricated to receive permanent molar zirconia crowns, dies were divided into 2 groups, 1) received perfricated crowns, 2) custom-made crowns. Thermo-dynamic cycling was performed to simulate 6 months in the oral cavity, Fracture resistance of each group was assessed by applying increasing load till fracture. Data were tested for normality using Shapiro-Wilk and Levene's tests. Data were analyzed using independent t test. RESULTS No statistically significant difference was found between fracture resistance of prefabricated and custom-made crowns (1793.54 ± 423.82) and (1987.38 ± 414.88) respectively. 3 crowns of the custom-made group fractured with the underlying die, versus zero dies fractured in the prefabricated group. CONCLUSIONS Prefabricated permanent molars zirconia crowns can perform as well as custom-made crowns for an adult in terms of fracture resistance, it is suitable for children and can withstand the occlusal forces of an adult.
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Affiliation(s)
- Osama Ibrahim El Shahawy
- grid.7776.10000 0004 0639 9286Department of Pediatric Dentistry, Faculty of Dentistry, Cairo University, Cairo, Egypt
| | - Maha Moussa Azab
- grid.411170.20000 0004 0412 4537Department of Pediatric Dentistry, Faculty of Dentistry, Fayoum University, Fayoum, Egypt ,grid.517528.c0000 0004 6020 2309Department of Pediatric Dentistry, School of Dentistry, Newgiza University NGU, Giza, Egypt
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Azab MM. Influence of different personal protective equipment on children's anxiety in dental office: a randomized controlled trial. BMC Oral Health 2022; 22:421. [PMID: 36138354 PMCID: PMC9502608 DOI: 10.1186/s12903-022-02442-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 09/07/2022] [Indexed: 11/15/2022] Open
Abstract
Background A change in how a dentist looks may affect the child’s anxiety in the dental office. This study compared the effect of conventional facial PPE versus extra PPE as reusable respirators; on the preoperative child’s anxiety in the dental office. Methods Fifty two children were randomly allocated into 4 groups, (1) goggles + surgical mask, and (2) face shield + surgical mask versus (3) half-face respirator and (4) full-face respirator. Each child was communicated with and clinically examined by a dentist wearing the assigned PPE, and then his anxiety was assessed using CFSS-DS. Shapiro–Wilk’s test was used to analyse normality. Kruskal–Wallis test followed by Dunn’s post hoc test with Bonferroni correction test, were used to analyse non-parametric anxiety score data. Correlations between different factors and anxiety scores were analysed using Spearman’s rank-order correlation coefficient. Results There were no statistically significant differences in the number of anxious children in each group, boys had significantly higher scores than girls (p < 0.001) For the “Goggles and surgical mask” group and “overall”. There was no significant correlation between age and anxiety scores. Children who didn’t have a previous dental visit had statistically significant higher scores than children with previous experience for “Goggles and surgical mask”, “Face shield and surgical mask “groups and “overall”. Conclusions Half-face and full-face respirators have not affected the child’s preoperative anxiety in the dental office when compared to the conventionally used PPE. Overall, there is an association between gender and previous dental visits, and dental anxiety, however; there is no correlation between child’s age and dental anxiety. Dentists dealing with children should feel free to use reusable respirators, without the risk of affecting children’s anxiety in the dental office. Trial Registration This study was registered on www.clinicaltrials.gov, ID: NCT05371561 on 12/05/2022.
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Affiliation(s)
- Maha Moussa Azab
- Department of Pediatric Dentistry, Faculty of Dentistry, Fayoum University, Fayoum, Egypt. .,Discipline of Pediatric Dentistry, School of Dentistry, Newgiza University NGU, Giza, Egypt.
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Azab MM, Yousry YM. Validation of the Arabic translation of the caries impacts and experiences questionnaire for children. Int J Paediatr Dent 2022; 32:660-667. [PMID: 34826172 DOI: 10.1111/ipd.12944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 10/16/2021] [Accepted: 11/21/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND The recently developed Caries Impacts and Experiences Questionnaire for Children (CARIES-QC) is originally an English questionnaire targeting the assessment of caries-related quality of life from a child's point of view. AIM This study aimed to translate and adapt the CARIES-QC into the Arabic language and to test its reliability and validity on Arabic-speaking children. DESIGN A total of 234 children aged 5-16 years answered the translated questionnaire. Internal consistency was measured using Cronbach's alpha; 62 children answered the questionnaire again to evaluate the test-retest reliability by calculating the intraclass correlation coefficient (ICC). Convergent validity was evaluated by correlating question scores with global question scores. Confirmatory factor analysis (CFA) was conducted to evaluate cross-cultural validity. RESULTS Cronbach's alpha of the CARIES-QC/A was 0.905. The inter-item correlation coefficients of the CARIES-QC/A ranged from 0.240 to 0.850. The total ICC score was 0.960. CFA demonstrated acceptable fit to the data in the one-factor model. Convergent validity indicated moderate correlation with the global question (rs = .740). CONCLUSION The CARIES-QC/A is a valid and reliable tool that could be used to evaluate oral health-related quality of life in Arabic-speaking children.
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Affiliation(s)
- Maha Moussa Azab
- Department of Pediatric Dentistry, Faculty of Dentistry, Fayoum University, Giza, Egypt.,Discipline of Paediatric Dentistry, Newgiza University NGU, Giza, Egypt
| | - Yasmin Mohamed Yousry
- Pediatric Dentistry Department, Faculty of Dentistry, Cairo University, Cairo, Egypt
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Yousry YM, Azab MM. Hybrid versus distance learning environment for a paediatric dentistry course and its influence on students' satisfaction: a cross-sectional study. BMC Med Educ 2022; 22:343. [PMID: 35513807 PMCID: PMC9069422 DOI: 10.1186/s12909-022-03417-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Accepted: 04/26/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND During the novel COVID-19 pandemic, many universities adopted distance and hybrid learning as a modification to their teaching methods to ensure continuity of education, abiding by the worldwide recommendations of social distancing. AIM To compare learning environments created through hybrid learning versus distance learning, to deliver paediatric dentistry course, and to assess the correlation between the created learning environment and students' satisfaction. METHOD In this cross-sectional study, students enrolled in a hybrid paediatric dentistry course were asked to participate in an electronic survey. The learning environment was assessed using Distance Educational Learning Environment Survey (DELES), students' satisfaction was assessed using Satisfaction Scale (SS). Retrospective data for distance learning course was used for comparison. Ordinal data were compared using Mann-Whitney U test. Spearman's rank order correlation coefficient was used to correlate students' satisfaction with DELES. Multiple regression analysis was used to predict satisfaction. RESULTS A total of 376 students' data were considered in the study. Hybrid learning had significantly higher scores than distance learning in 3 DELES scales. There was a statistically significant weak positive correlation between satisfaction and DELES. Multiple regression analysis model was statistically significant and accounted for (22.8%) of the variance in students' satisfaction. Only "Instructor support" (p = 0.001) and "Student autonomy" (p < 0.001) had a significant effect on satisfaction. CONCLUSION This study supports the superiority of a hybrid learning environment over a complete distance learning environment, it also shows that satisfaction is correlated and can be predicted by the created learning environment. TRIAL REGISTRATION This study has been registered on clinicaltrials.gov on 21 May 2020 with an identifier: NCT04401371 .
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Affiliation(s)
- Yasmin Mohamed Yousry
- Department of Pediatric Dentistry, Faculty of Dentistry, Cairo University, Cairo, Egypt.
| | - Maha Moussa Azab
- Department of Pediatric Dentistry, Faculty of Dentistry, Fayoum University, Fayoum, Egypt
- Discipline of Pediatric Dentistry, School of Dentistry, Newgiza University NGU, Giza, Egypt
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Azab MM, Moheb DM, El Shahawy OI, Rashed MAM. Influence of luting cement on the clinical outcomes of Zirconia pediatric crowns: A 3-year split-mouth randomized controlled trial. Int J Paediatr Dent 2020; 30:314-322. [PMID: 31845435 DOI: 10.1111/ipd.12607] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 12/09/2019] [Accepted: 12/09/2019] [Indexed: 11/30/2022]
Abstract
BACKGROUND There is no scientific evidence supporting the choice of luting cement for cementation of zirconia crowns. AIM The purpose of this split-mouth study was to compare the efficacy of using bioactive cement versus packable glass ionomer for cementation of posterior pediatric zirconia crowns. DESIGN Fifty first mandibular primary molars were restored by zirconia crowns and were randomly divided to be luted with either (a) bioactive cement or (b) packable glass ionomer. Crowns' retention, fracture, and gingival condition were evaluated at 1 week, and 1-, 3-, 6-, 9-, 12-, 18-, 24-, and 36-month intervals. Statistical analysis was carried out using Fisher's exact test, Kaplan-Meier survival analysis, and Wilcoxon signed rank test. RESULTS At 3- to 36-month follow-ups, there were statistically significant (P = .009-≤.001) less debonded crowns in packable glass ionomer group. There were no fractured crowns for either cements. There was no statistically significant difference between gingival index scores. CONCLUSIONS Packable glass ionomer is more retentive than bioactive cement when used for cementing zirconia pediatric crowns. Posterior zirconia pediatric crowns have high fracture resistance after 36 months of clinical performance, irrespective of luting cement. Luting cement for zirconia pediatric crowns has no apparent effect on gingival condition around crowns.
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Affiliation(s)
- Maha Moussa Azab
- Department of Pediatric Dentistry, Faculty of Dentistry, Fayoum University, Egypt
| | - Dalia Mohamed Moheb
- Department of Pediatric Dentistry, Faculty of Dentistry, Cairo University, Egypt
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Bendary MM, Solyman SM, Azab MM, Mahmoud NF, Hanora AM. Genetic diversity of multidrug resistant Staphylococcus aureus isolated from clinical and non clinical samples in Egypt. Cell Mol Biol (Noisy-le-grand) 2016; 62:55-61. [PMID: 27609475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Accepted: 08/17/2016] [Indexed: 06/06/2023]
Abstract
In recent years, the increasing incidence of diseases caused by Staphylococcus aureus (S. aureus) has been noted in the university hospitals of El-Sharkia and Assuit governorates - Egypt. Therefore, we studied the genetic relatedness of multidrug resistant S. aureus isolates from different sources in the above mentioned governorates. One hundred and fifty six S. aureus isolates were divided into 5 different groups, 1 non clinical isolates from different food products and 4 different clinical isolates of human and animal sources in the 2 different governorates. Epidemiological characteristics of 156 S. aureus isolates were determined by phenotypic methods including quantitative antibiogram typing and biofilm production. Genetic typing of 35 multidrug resistant (MDR) isolates (7 from each group) based on 16S rRNA gene sequence, virulence and antimicrobial resistance gene profiles was done. The genetic relatedness of the highest virulent strain from each group was detected based on different single locus sequence typing and multi-locus sequence typing (MLST). S. aureus strains isolated from different sources and geographical areas showed high diversity. The genetic typing revealed different sequence types and different sequences of coa and spa genes. S. aureus isolates were found highly diverse in Egypt.
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Affiliation(s)
- M M Bendary
- Suez Canal University Department of Microbiology and Immunology, College of Pharmacy Egypt
| | - S M Solyman
- Suez Canal University Department of Microbiology and Immunology, College of Pharmacy Egypt
| | - M M Azab
- Suez Canal University Department of Microbiology and Immunology, College of Pharmacy Egypt
| | - N F Mahmoud
- Suez Canal University Department of Microbiology and Immunology, College of Pharmacy Egypt
| | - A M Hanora
- Suez Canal University Department of Microbiology and Immunology, College of Pharmacy Egypt
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Bendary MM, Solyman SM, Azab MM, Mahmoud NF, Hanora AM. Characterization of Methicillin Resistant Staphylococcus aureus isolated from human and animal samples in Egypt. Cell Mol Biol (Noisy-le-grand) 2016; 62:94-100. [PMID: 26950458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 02/26/2016] [Indexed: 06/05/2023]
Abstract
Staphylococcus aureus (S. aureus) has been one of the most problematic pathogens. Methicillin Resistant S. aureus (MRSA) has emerged as a major concern for both human and animal. Antibiotic resistance genes dissemination might be possible between human and animal bacteria. The aim of this study is to show phenotypic and genotypic diversity of human and animal MRSA isolates. Antibiogram typing and biofilm production were used as a primary phenotypic typing tool for the characterization of (40) animal and (38) human MRSA isolates. Genetic typing based on sequencing of 16S rRNA gene and virulence gene profiles were done. Antimicrobial resistance profiles of the animal isolates showed little evidence of widespread of resistance, although this was seen in many human isolates. The biofilm production was detected in higher percentage among animal isolates. Based on the genetic typing and multiple antibiotic resistance (MAR) index, the majority of animal isolates clustered into lineages that were not found in human isolates. Animal and human MRSA isolates showed diversity in antibiotic resistance and virulence gene profiles may be due to host adaptation or chances for contamination between the two hosts were not present in our study.
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MESH Headings
- Animals
- Anti-Bacterial Agents/pharmacology
- Biofilms/drug effects
- Cattle
- Cluster Analysis
- Drug Resistance, Bacterial/drug effects
- Egypt
- Female
- Genotype
- Humans
- Mastitis, Bovine/microbiology
- Mastitis, Bovine/pathology
- Methicillin-Resistant Staphylococcus aureus/classification
- Methicillin-Resistant Staphylococcus aureus/genetics
- Methicillin-Resistant Staphylococcus aureus/physiology
- Microbial Sensitivity Tests
- Phenotype
- Phylogeny
- Polymerase Chain Reaction
- RNA, Ribosomal, 16S/chemistry
- RNA, Ribosomal, 16S/genetics
- RNA, Ribosomal, 16S/metabolism
- Sequence Analysis, DNA
- Staphylococcal Infections/microbiology
- Staphylococcal Infections/pathology
- Virulence Factors/genetics
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Affiliation(s)
- M M Bendary
- Suez Canal University Department of Microbiology and Immunology, Faculty of Pharmacy Ismailia Egypt
| | - S M Solyman
- Suez Canal University Department of Microbiology and Immunology, Faculty of Pharmacy Ismailia Egypt
| | - M M Azab
- Suez Canal University Department of Microbiology and Immunology, Faculty of Pharmacy Ismailia Egypt
| | - N F Mahmoud
- Suez Canal University Department of Microbiology and Immunology, Faculty of Pharmacy Ismailia Egypt
| | - A M Hanora
- Suez Canal University Department of Microbiology and Immunology, Faculty of Pharmacy Ismailia Egypt
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Azab MM, Darwish AA, Mahmoud HA, Sdeek FA. Residue levels of organochlorine pesticides in some ecosystem components of Manzala Lake. Environ Monit Assess 2013; 185:10257-10268. [PMID: 23884913 DOI: 10.1007/s10661-013-3330-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Accepted: 06/26/2013] [Indexed: 06/02/2023]
Abstract
To evaluate the organochlorine pesticide (OCP) contamination of Manzala Lake, its ecosystem was investigated during the winter season (December to March). The studied ecosystem components were water, sediment, aquatic weeds, and fishes in four locations. The samples were analyzed by gas chromatography with electron capture detector. Pollutant levels of total OCPs showed significantly high levels in the water areas of Round road (46.253 ng/ml), Port-Said Damietta road (19.301 ng/ml), followed by Bughas El-Rasoah (5.539 ng/ml), then Ashtoum El Gamel (natural reserve area now) (0.289 ng/ml). Organochlorines were detected in sediment only in Round road (3.359 μg/kg) and Port-Said Damietta road (0.171 μg/kg) by significant order while they were undetectable in Ashtoum El Gamel and Bughas El-Rasoah. Total OCPs in aquatic weeds ranged between 0.194 μg/kg in Port-Said Damietta and 0.026 μg/kg in Ashtoum El Gamel. While OCPs were 0.160 and 0.153 μg/kg in Round road and Bughas El-Rasoah, respectively. Concerning fish muscles OCPs were significantly higher in the Round road area (0.397 μg/kg) followed by the Port-Said Damietta road (0.258 μg/kg), and finally, Ashtoum El Gamel samples (0.126 μg/kg). The results revealed the direct relation for the accumulation of OCPs between studied ecosystem parameters at the Manzala Lake during the winter season. Results also demonstrated that fish samples collected from the Manzala Lake in the studied areas were contaminated with levels of organochlorines, not higher than the maximum permissible level recorded by FAO/WHO, and that the public is not at risk with fish consumption.
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Affiliation(s)
- M M Azab
- Plant Protection Department, Benha University, Benha, Egypt,
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