Full Text Journal Articles by
Author Sameh Attia

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Clinical Relevance of the Microbiome in Odontogenic Abscesses.

Sebastian Böttger, Silke Zechel-Gran, Daniel Schmermund, Philipp Streckbein, Jan-Falco Wilbrand, Michael Knitschke, Jörn Pons-Kühnemann, Torsten Hain, Markus Weigel, Can Imirzalioglu, Hans-Peter Howaldt, Eugen Domann, Sameh Attia,

Odontogenic abscesses are usually caused by bacteria of the oral microbiome. However, the diagnostic culture of these bacteria is often prone to errors and sometimes fails completely due to the fastidiousness of the relevant bacterial species. The question arises whether additional pathogen diagnostics using molecular methods provide additional benefits for ... Read more >>

Biology (Basel) (Biology)
[2021, 10(9):]

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Side Effects of mRNA-Based and Viral Vector-Based COVID-19 Vaccines among German Healthcare Workers.

Miloslav Klugar, Abanoub Riad, Mohamed Mekhemar, Jonas Conrad, Mayte Buchbender, Hans-Peter Howaldt, Sameh Attia,

<h4>Background</h4>the increasing number of COVID-19 vaccines available to the public may trigger hesitancy or selectivity towards vaccination. This study aimed to evaluate the post-vaccination side effects of the different vaccines approved in Germany; Methods: a cross-sectional survey-based study was carried out using an online questionnaire validated and tested for a ... Read more >>

Biology (Basel) (Biology)
[2021, 10(8):]

Cited: 5 times

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Dental Nurses' Mental Health in Germany: A Nationwide Survey during the COVID-19 Pandemic.

Mohamed Mekhemar, Sameh Attia, Christof Dörfer, Jonas Conrad,

Several studies have found a rise in the rate of psychological discomfort among healthcare personnel since the COVID-19 pandemic outbreak. In this study, we analyzed the relationship between psychological variables of anxiety, depression, stress, avoidance, intrusion and hyperarousal and several factors among German dental nurses. For this poll, dental nurses ... Read more >>

Int J Environ Res Public Health (International journal of environmental research and public health)
[2021, 18(15):]

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Microbiome of Odontogenic Abscesses.

Sebastian Böttger, Silke Zechel-Gran, Daniel Schmermund, Philipp Streckbein, Jan-Falco Wilbrand, Michael Knitschke, Jörn Pons-Kühnemann, Torsten Hain, Markus Weigel, Hans-Peter Howaldt, Eugen Domann, Sameh Attia,

Severe odontogenic abscesses are regularly caused by bacteria of the physiological oral microbiome. However, the culture of these bacteria is often prone to errors and sometimes does not result in any bacterial growth. Furthermore, various authors found completely different bacterial spectra in odontogenic abscesses. Experimental 16S rRNA gene next-generation sequencing ... Read more >>

Microorganisms (Microorganisms)
[2021, 9(6):]

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COVID-19 Vaccines Safety Tracking (CoVaST): Protocol of a Multi-Center Prospective Cohort Study for Active Surveillance of COVID-19 Vaccines' Side Effects.

Abanoub Riad, Holger Schünemann, Sameh Attia, Tina Poklepović Peričić, Marija Franka Žuljević, Mikk Jürisson, Ruth Kalda, Katrin Lang, Sudhakar Morankar, Elias Ali Yesuf, Mohamed Mekhemar, Anthony Danso-Appiah, Ahmad Sofi-Mahmudi, Giordano Pérez-Gaxiola, Arkadiusz Dziedzic, João Apóstolo, Daniela Cardoso, Janja Marc, Mayte Moreno-Casbas, Charles Shey Wiysonge, Amir Qaseem, Anna Gryschek, Ivana Tadić, Salman Hussain, Mohammed Ahmed Khan, Jitka Klugarova, Andrea Pokorna, Michal Koščík, Miloslav Klugar,

<h4>Background</h4>Coronavirus disease (COVID-19) vaccine-related side effects have a determinant role in the public decision regarding vaccination. Therefore, this study has been designed to actively monitor the safety and effectiveness of COVID-19 vaccines globally.<h4>Methods</h4>A multi-country, three-phase study including a cross-sectional survey to test for the short-term side effects of COVID-19 vaccines ... Read more >>

Int J Environ Res Public Health (International journal of environmental research and public health)
[2021, 18(15):]

Cited: 2 times

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Dental Students in Germany throughout the COVID-19 Pandemic: A Psychological Assessment and Cross-Sectional Survey.

Mohamed Mekhemar, Sameh Attia, Christof Dörfer, Jonas Conrad,

Multiple investigations have reported high psychological distress among students since the coronavirus (COVID-19) outbreak started. This survey examined the associations between psychological features, and several demographic and social factors among dental students in German universities. Dental students registered in German universities nationwide were asked to join this survey via a ... Read more >>

Biology (Basel) (Biology)
[2021, 10(7):]

Cited: 1 time

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Safety of ChAdOx1 nCoV-19 Vaccine: Independent Evidence from Two EU States.

Abanoub Riad, Andrea Pokorná, Mohamed Mekhemar, Jonas Conrad, Jitka Klugarová, Michal Koščík, Miloslav Klugar, Sameh Attia,

Recent reports of thrombosis following AstraZeneca COVID-19 vaccine in young females (<55 years-old) led to temporary suspension and urgent investigation by the European Medicines Agency (EMA) that concluded that vaccine benefits still outweigh its side effects (SEs). Therefore, this study aims to provide early independent evidence on the vaccine SEs' ... Read more >>

Vaccines (Basel) (Vaccines)
[2021, 9(6):]

Cited: 6 times

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Prevalence and Risk Factors of CoronaVac Side Effects: An Independent Cross-Sectional Study among Healthcare Workers in Turkey.

Abanoub Riad, Derya Sağıroğlu, Batuhan Üstün, Andrea Pokorná, Jitka Klugarová, Sameh Attia, Miloslav Klugar,

<h4>Background</h4>COVID-19 vaccine hesitancy is a serious threat to mass vaccination strategies that need to be accelerated currently in order to achieve a substantial level of community immunity. Independent (non-sponsored) studies have a great potential to enhance public confidence in vaccines and accelerate their uptake process.<h4>Methods</h4>A nationwide cross-sectional study for the ... Read more >>

J Clin Med (Journal of clinical medicine)
[2021, 10(12):]

Cited: 7 times

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Impact of Planning Method (Conventional versus Virtual) on Time to Therapy Initiation and Resection Margins: A Retrospective Analysis of 104 Immediate Jaw Reconstructions.

Michael Knitschke, Christina Bäcker, Daniel Schmermund, Sebastian Böttger, Philipp Streckbein, Hans-Peter Howaldt, Sameh Attia,

Virtual surgical planning (VSP) and patient-specific implants are currently increasing for immediate jaw reconstruction after ablative oncologic surgery. This technique contributes to more accurate and efficient preoperative planning and shorter operation time. The present retrospective, single-center study analyzes the influence of time delay caused by VSP vs. conventional (non-VSP) reconstruction ... Read more >>

Cancers (Basel) (Cancers)
[2021, 13(12):]

Cited: 1 time

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Oral Health-Related Knowledge, Attitudes and Behaviours of Elementary School Teachers.

Gülçin Yılmaz, Abanoub Riad, Martin Krsek, Hanefı Kurt, Sameh Attia,

<h4>Background</h4>elementary schoolteachers play a central role in shaping their students' beliefs, attitudes, and behaviours related to health and oral hygiene. This study was designed to evaluate Turkish schoolteachers' levels of oral health knowledge, attitudes, and behaviours.<h4>Methods</h4>A cross-sectional survey-based study was conducted among elementary schoolteachers in Istanbul using a validated self-administered ... Read more >>

Int J Environ Res Public Health (International journal of environmental research and public health)
[2021, 18(11):]

Cited: 0 times

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Large Animal Model of Osteoporotic Defect Healing: An Alternative to Metaphyseal Defect Model.

Markus Rupp, Christoph Biehl, Deeksha Malhan, Fathi Hassan, Sameh Attia, Sebastian Rosch, Annemarie B Schäfer, Erin McMahon, Marian Kampschulte, Christian Heiss, Thaqif El Khassawna,

Osteoporosis is a common metabolic disorder diagnosed by lower bone density and higher risk of fracture. Fragility fractures because of osteoporosis are associated with high mortality rate. Deep understanding of fracture healing in osteoporosis is important for successful treatment. Therefore, the FDA approved the use of small and large animal ... Read more >>

Life (Basel) (Life (Basel, Switzerland))
[2021, 11(3):]

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Partial and Total Flap Failure after Fibula Free Flap in Head and Neck Reconstructive Surgery: Retrospective Analysis of 180 Flaps over 19 Years.

Michael Knitschke, Sophia Sonnabend, Christina Bäcker, Daniel Schmermund, Sebastian Böttger, Hans-Peter Howaldt, Sameh Attia,

Fibula free flap (FFF) is widely used in head and neck reconstructive surgery and is considered as a standard and therapy of choice after ablative cancer surgery. The aim of this retrospective monocenter study was to determine the success rates of fibula free flaps for jaw reconstruction after ablative tumor ... Read more >>

Cancers (Basel) (Cancers)
[2021, 13(4):]

Cited: 0 times

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Kobra Surgery Simulator-A Possibility to Improve Digital Teaching? A Case-Control Study.

Mayte Buchbender, Mathias Maser, Friedrich W Neukam, Marco R Kesting, Sameh Attia, Christian M Schmitt,

Computer-aided simulations have long been of great importance in university teaching; however, to date, there is limited use of such simulations in the dental surgical sector. For this purpose, an oral surgery simulator, "Kobra", was implemented in student training and was evaluated for dental education. Dental students (group 1, third-year ... Read more >>

Int J Environ Res Public Health (International journal of environmental research and public health)
[2021, 18(4):]

Cited: 0 times

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Prevalence and Risk Factors of CoronaVac Side Effects: An Independent Cross-Sectional Study Among Healthcare Workers in Turkey

Abanoub Riad, Derya Sağıroğlu, Batuhan Üstün, Sameh Attia, Miloslav Klugar,

Background: COVIC-19 vaccine hesitancy is a serious threat to mass vaccination strategies that need to be accelerated currently for achieving a substantial level of community immunity. Independent (non-sponsored) studies have a great potential to enhance public confidence in vaccines and accelerate their uptake process.<br><br>Methods: A nationwide cross-sectional study for the ... Read more >>

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Prevalence of COVID-19 Vaccine Side Effects among Healthcare Workers in the Czech Republic.

Abanoub Riad, Andrea Pokorná, Sameh Attia, Jitka Klugarová, Michal Koščík, Miloslav Klugar,

<h4>Background</h4>COVID-19 vaccine side effects have a fundamental role in public confidence in the vaccine and its uptake process. Thus far, the evidence on vaccine safety has exclusively been obtained from the manufacturer-sponsored studies; therefore, this study was designed to provide independent evidence on Pfizer-BioNTech COVID-19 vaccine side effects.<h4>Methods</h4>A cross-sectional survey-based ... Read more >>

J Clin Med (Journal of clinical medicine)
[2021, 10(7):]

Cited: 18 times

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Impact of COVID-19 on the Dental Community: Part I before Vaccine (BV).

Sameh Attia, Hans-Peter Howaldt,

One year has passed with the COVID-19 pandemic and its impact is still evident everywhere on the globe and in all fields and domains [...]. ... Read more >>

J Clin Med (Journal of clinical medicine)
[2021, 10(2):]

Cited: 11 times

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The Psychological Impact of the COVID-19 Pandemic on Dentists in Germany.

Mohamed Mekhemar, Sameh Attia, Christof Dörfer, Jonas Conrad,

Since the announcement of the coronavirus 2019 (COVID-19) outbreak as a pandemic, several studies reported increased psychological distress among healthcare workers. In this investigation, we examined the association between psychological outcomes and various factors among German dentists. Dentists from all German federal states were invited to participate in this study ... Read more >>

J Clin Med (Journal of clinical medicine)
[2021, 10(5):]

Cited: 6 times

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Perceived Preparedness of Dental Academic Institutions to Cope with the COVID-19 Pandemic: A Multi-Country Survey.

Nour Ammar, Nourhan M Aly, Morenike Oluwatoyin Folayan, Yousef Khader, Simin Z Mohebbi, Sameh Attia, Hans-Peter Howaldt, Sebastian Boettger, Jorma Virtanen, Marwa Madi, Diah A Maharani, Anton Rahardjo, Imran Khan, Ola B Al-Batayneh, Maher Rashwan, Verica Pavlic, Smiljka Cicmil, Kanako Noritake, Gabriella Galluccio, Antonella Polimeni, Anas A Shamala, Arheiam Aarheiam, Davide Mancino, Prathip Phantumvanit, Jin-Bom Kim, Youn-Hee Choi, Mai A Dama, Maha M Abdelsalam, Jorge L Castillo, Myat Nyan, Iyad Hussein, Easter Joury, Ana P Vukovic, Alfredo Iandolo, Arthur M Kemoli, Maha El Tantawi,

Dental academic institutions are affected by COVID-19. We assessed the perceived COVID-19 preparedness of these institutions and the characteristics of institutions with greater perceived preparedness. An international cross-sectional survey of dental academics was conducted from March to August 2020 to assess academics' and institutional attributes, perceived preparedness, and availability of ... Read more >>

Int J Environ Res Public Health (International journal of environmental research and public health)
[2021, 18(4):]

Cited: 3 times

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Heterotopic Ossification of the Vascular Pedicle after Maxillofacial Reconstructive Surgery Using Fibular Free Flap: Introducing New Classification and Retrospective Analysis.

Michael Knitschke, Kelly Siu, Christina Bäcker, Sameh Attia, Hans-Peter Howaldt, Sebastian Böttger,

Heterotopic ossification (HO) is one of the described phenomena after maxillofacial reconstructive surgery using fibular free flap (FFF) at the reception-site. The aim of this study was to determine the radiological incidence and form of HO along the fibular vascular pedicle as well as the rate of clinical symptoms if ... Read more >>

J Clin Med (Journal of clinical medicine)
[2020, 10(1):]

Cited: 1 time

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Oral Health Attitudes among Preclinical and Clinical Dental Students: A Pilot Study and Self-Assessment in an Egyptian State-Funded University.

Mohamed Mekhemar, Kamal Ebeid, Sameh Attia, Christof Dörfer, Jonas Conrad,

Dentists should present to patients as good role models in their oral health behaviour. Previous studies have demonstrated how education can improve dental students' oral health. This pilot investigation aimed to compare and evaluate the features of the oral health behaviour and attitudes of preclinical and clinical dental students at ... Read more >>

Int J Environ Res Public Health (International journal of environmental research and public health)
[2020, 18(1):]

Cited: 0 times

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Knowledge of dental academics about the COVID-19 pandemic: a multi-country online survey.

Nour Ammar, Nourhan M Aly, Morenike O Folayan, Simin Z Mohebbi, Sameh Attia, Hans-Peter Howaldt, Sebastian Boettger, Yousef Khader, Diah A Maharani, Anton Rahardjo, Imran Khan, Marwa Madi, Anas Shamala, Ola B Al-Batayneh, Maher Rashwan, Verica Pavlic, Smiljka Cicmil, Gabriella Galluccio, Antonella Polimeni, Davide Mancino, Arheiam Arheiam, Mai A Dama, Myat Nyan, Prathip Phantumvanit, Jin-Bom Kim, Youn-Hee Choi, Jorge L Castillo, Easter Joury, Maha M Abdelsalam, Mohammad M Alkeshan, Iyad Hussein, Ana P Vukovic, Alfredo Iandolo, Arthur M Kemoli, Maha El Tantawi,

<h4>Background</h4>COVID-19 is a global pandemic affecting all aspects of life in all countries. We assessed COVID-19 knowledge and associated factors among dental academics in 26 countries.<h4>Methods</h4>We invited dental academics to participate in a cross-sectional, multi-country, online survey from March to April 2020. The survey collected data on knowledge of COVID-19 ... Read more >>

BMC Med Educ (BMC medical education)
[2020, 20(1):399]

Cited: 10 times

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Behavior change due to COVID-19 among dental academics-The theory of planned behavior: Stresses, worries, training, and pandemic severity.

Nour Ammar, Nourhan M Aly, Morenike O Folayan, Yousef Khader, Jorma I Virtanen, Ola B Al-Batayneh, Simin Z Mohebbi, Sameh Attia, Hans-Peter Howaldt, Sebastian Boettger, Diah A Maharani, Anton Rahardjo, Imran Khan, Marwa Madi, Maher Rashwan, Verica Pavlic, Smiljka Cicmil, Youn-Hee Choi, Easter Joury, Jorge L Castillo, Kanako Noritake, Anas Shamala, Gabriella Galluccio, Antonella Polimeni, Prathip Phantumvanit, Davide Mancino, Jin-Bom Kim, Maha M Abdelsalam, Arheiam Arheiam, Mai A Dama, Myat Nyan, Iyad Hussein, Mohammad M Alkeshan, Ana P Vukovic, Alfredo Iandolo, Arthur M Kemoli, Maha El Tantawi,

<h4>Objective</h4>COVID-19 pandemic led to major life changes. We assessed the psychological impact of COVID-19 on dental academics globally and on changes in their behaviors.<h4>Methods</h4>We invited dental academics to complete a cross-sectional, online survey from March to May 2020. The survey was based on the Theory of Planned Behavior (TPB). The ... Read more >>

PLoS One (PloS one)
[2020, 15(9):e0239961]

Cited: 14 times

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Is Biofeedback through an Intra-Aural Device an Effective Method to Treat Bruxism? Case Series and Initial Experience.

Kira Pfeiffer, Thaqif El Khassawna, Deeksha Malhan, Christine Langer, Barbara Sommer, Mohamed Mekhemar, Hans-Peter Howaldt, Sameh Attia,

Biofeedback was reported as an effective concept for bruxism treatment, through increasing patient's awareness of the habit. During bruxing both ear canals become tighter, therefore, an in-ear device can provide biofeedback. The in-ear device is fitted to the ear canal in physiological status, during bruxing the ear-canal tightens resulting in ... Read more >>

Int J Environ Res Public Health (International journal of environmental research and public health)
[2020, 18(1):]

Cited: 2 times

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A New Type of Chronic Wound Infection after Wisdom Tooth Extraction: A Diagnostic Approach with 16S-rRNA Gene Analysis, Next-Generation Sequencing, and Bioinformatics.

Sebastian Böttger, Silke Zechel-Gran, Philipp Streckbein, Michael Knitschke, Torsten Hain, Markus Weigel, Jan-Falco Wilbrand, Eugen Domann, Hans-Peter Howaldt, Sameh Attia,

Delayed-onset infections are rare postoperative complications of lower third molar extractions. This article presents a case of a chronic combined hard and soft tissue infection after the extraction of a third molar, where the causative organisms could only be elucidated by molecular methods. Experimental 16S-rRNA gene analysis with next-generation sequencing ... Read more >>

Pathogens (Pathogens (Basel, Switzerland))
[2020, 9(10):]

Cited: 1 time

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Knowledge of Dental Academics about the COVID-19 Pandemic: A Multi-Country Online Survey

Nour Ammar, Nourhan Aly, Morenike Folayan, Simin Mohebbi, Sameh Attia, Hans-Peter Howaldt, Sebastian Boettger, Yousef Khader, Diah Maharani, Anton Rahardjo, Imran Khan, Marwa Madi, Anas Shamala, Ola Al-Batayneh, Maher Rashwan, Verica Pavlic, Smiljka Cicmil, Gabriella Galluccio, Antonella Polimeni, Davide Mancino, Arheiam Arheiam, Mai Dama, Myat Nyan, Prathip Phantumvanit, Jin-Bom Kim, Youn-Hee Choi, Jorge Castillo, Easter Joury, Maha Abdelsalam, Mohammad Alkeshan, Iyad Hussein, Ana Vukovic, Alfredo Iandolo, Arthur Kemoli, Maha El Tantawi,

<h4>Background: </h4> COVID-19 is a global pandemic affecting all aspects of life in all countries. We assessed COVID-19 knowledge and associated factors among dental academics in 26 countries. <h4>Methods: </h4>: We invited dental academics to participate in a cross-sectional, multi-country, online survey from March to April 2020. The survey collected ... Read more >>

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