Skip to main content
Bulletin of the National Research Centre
Bulletin of the National Research Centre Cover Image

Dentistry

  1. This study evaluated the durability of optical properties of chameleon effect of Omnichroma and Essentia composite thermocycled in black dark drinks. 180 specimens of 10 mm diameter × 2 mm thickness from each ...

    Authors: Bassma Abdelhamed, Asmaa Abdel-Hakeem Metwally and Heba A. Shalaby
    Citation: Bulletin of the National Research Centre 2022 46:184
    Content type: Research Published on:

  2. The aim of this work was to study the influence of simulated body fluid (SBF) and Pseudomonas aeruginosa (in Mueller Hinton Broth, MHB media) on the hydration reactions, formation of strätlingite (C2ASH8) and mor...

    Authors: M. M. Radwan and Shaymaa M. Nagi
    Citation: Bulletin of the National Research Centre 2022 46:180
    Content type: Research Published on:

  3. The aim of this Systematic review is to provide more accurate knowledge about the relation between bruxism, Dental implant and the implant-supported prosthesis.

    Authors: Abboud Youssef, Joe Hobeiche, Amine El Zoghbi, Rola Mortada and Ziad Salameh
    Citation: Bulletin of the National Research Centre 2022 46:172
    Content type: Review Published on:

  4. In 2019, a viral and respiratory pathology called COVID-19 emerged in Wuhan, China, and spread to other continents. Its main symptoms include fever, cough, dyspnea, myalgia, anorexia and respiratory distress i...

    Authors: Juliano Abreu Pacheco, Kelly Fernanda Molena, Camila Raíssa Oliveira Gontijo Martins, Silmara Aparecida Milori Corona and Maria Cristina Borsatto
    Citation: Bulletin of the National Research Centre 2022 46:140
    Content type: Review Published on:

  5. To compare the push out bond strength of MTA apical plug in a simulated immature root, after using different irrigation protocols; NaOCl + 20% Etidronic acid (HEBP) and NaOCl + 17% Ethylenediaminetetraacetic a...

    Authors: Nada Omar Mostafa, Nihal Refaat Kabel and Muhammad Abbass Masoud
    Citation: Bulletin of the National Research Centre 2022 46:138
    Content type: Research Published on:

  6. Preheating is one of several innovative approaches and improvements developed to increase the durability and clinical behavior of resin composites. Development of preheated composites is to reduce its viscosit...

    Authors: AlShimaa Nasser, Nermin A. Mahmoud and Mona I. Riad
    Citation: Bulletin of the National Research Centre 2022 46:121
    Content type: Research Published on:

  8. To evaluate the effect of modifying conventional glass ionomer (CGIC) and resin-modified glass ionomer (RMGIC) with nano-hydroxyapatite (Nano-HA) on their clinical performance as restorations for class V cavit...

    Authors: Zeinab M. Zaki, Shaymaa M. Nagi, Ali E. Abdelnabi, Adli A. Hanna, Dina W. Elkassas, Mohamed H. Zaazou and Maha A. Niazy
    Citation: Bulletin of the National Research Centre 2022 46:116
    Content type: Research Published on:

  9. Mouth breathing is considered as a mode of breathing modality that presents as a replacement to normal nasal breathing. This persistent pattern of mouth breathing have considerable influence on the development...

    Authors: Lakshmi Thribhuvanan and M. S. Saravanakumar
    Citation: Bulletin of the National Research Centre 2022 46:111
    Content type: Research Published on:

  10. Osteoradionecrosis of the jaw (ORNJ) is a well-known chronic side effect of radiotherapy (RT) for head and neck malignancies. Osteonecrosis of the jaw (ONJ), similar pathology to ORNJ, may be induced by bispho...

    Authors: Atsushi Shudo
    Citation: Bulletin of the National Research Centre 2022 46:98
    Content type: Case Report Published on:

  11. Fibromyalgia syndrome (FM) is often accompanied by anxiety. Dental anxiety is common in society and negatively affects the application of patients to the dentist.

    Authors: Manolya Ilhanli, Mehmet Alptekin Karacesme, Ilker Ilhanli and Peruze Celenk
    Citation: Bulletin of the National Research Centre 2022 46:90
    Content type: Research Published on:

  12. The most critical part in management of children in the dental clinic is control of pain and this can be achieved through local anesthesia. When the treatment plan includes extraction of mandibular primary mol...

    Authors: Rasha F. Sharaf and Nihal Kabel
    Citation: Bulletin of the National Research Centre 2022 46:83
    Content type: Research Published on:

  13. This study investigated the effect of preheating of bulk-fill BIS-GMA free and containing resin composite on post-gel shrinkage strain. In a split Teflon mold, sixty resin composite specimens were prepared wit...

    Authors: Mohamed Lotfy, Nermin A. Mahmoud and Mona I. Riad
    Citation: Bulletin of the National Research Centre 2022 46:74
    Content type: Research Published on:

  16. The purpose of the current study was to compare the antibacterial activity of silver nanoparticles AgNPs paste and silver nanoparticles AgNPs with curcumin paste as intracanal medications versus calcium hydrox...

    Authors: Soha Adel Abdou and Amira Ibrahim Mohamed
    Citation: Bulletin of the National Research Centre 2022 46:36
    Content type: Research Published on:

  17. Anxiety and fear of dental treatment in children have been recognized as sources of serious health problems. Parents are known to subtly transmit feelings of fear and anxiety to their children Commonly which h...

    Authors: Lakshmi Thribhuvanan, M. S. Saravanakumar and G. Anjana
    Citation: Bulletin of the National Research Centre 2021 45:227
    Content type: Research Published on:

  18. Objective was to investigate the effect of NovaMin toothpaste and two experimental toothpastes on surface microhardness of hypersensitive dentin.

    Authors: Hoda R. Riad, Osama S. Mosallam, Alaa H. Salama, Lamiaa M. Moharam, Mohamed H Zaazou, Hanan A. Niazi and Mokhtar N. Ibrahim
    Citation: Bulletin of the National Research Centre 2021 45:224
    Content type: Research Published on:

  20. Molar-Incisor Hypomineralization (MIH) is a prevalent clinical condition which is associated with a high burden of disease. The present study aimed to assess and compare the knowledge, perceptions, and clinica...

    Authors: Alaa Mohammed Yehia, Amr M. Abdelaziz and Amira Badran
    Citation: Bulletin of the National Research Centre 2021 45:206
    Content type: Research Published on:

  21. The aim of this study was to compare the clinical performance of Nano-hydroxyapatite-modified conventional glass ionomer cement (NHA-GIC) and Nano-hydroxyapatite-modified resin-modified glass ionomer cement (N...

    Authors: Zeinab M. Zaki, Maha A. Niazy, Mohamed H. Zaazou, Shaymaa M. Nagi and Dina W. Elkassas
    Citation: Bulletin of the National Research Centre 2021 45:199
    Content type: Research Published on:

    The Correction to this article has been published in Bulletin of the National Research Centre 2021 45:211

  22. This study aimed to in vivo and in vitro evaluate the remineralization potential and shear bond strength (SBS) of experimentally prepared tri-calcium aluminate (C3A)-modified glass ionomer cements on sound and ar...

    Authors: M. M. Radwan, H. K. Abd EL-Hamid and Shaymaa M. Nagi
    Citation: Bulletin of the National Research Centre 2021 45:192
    Content type: Research Published on:

  23. Enormous improvements in dental materials’ manufacturing for the aim of producing durable dental materials without compromising the aesthetic properties were developed. One of the approaches that fulfill this ...

    Authors: Engie M. Safwat, Ahmad G. A. Khater, Ahmed G. Abd-Elsatar and Gamal A. Khater
    Citation: Bulletin of the National Research Centre 2021 45:190
    Content type: Review Published on:

  24. Was to evaluate effect of clove, turmeric and garlic nano-herbal extracts on surface roughness and microhardness of demineralized dentin, and their bactericidal effect on Streptococcus mutans and Streptococcus so...

    Authors: Lamiaa M. Moharam, Doaa M. Sadony, Manal M. Adel and Karim Montasser
    Citation: Bulletin of the National Research Centre 2021 45:178
    Content type: Research Published on:

  25. Extraction of the first premolar followed by canine retraction into the extraction space is a common treatment in orthodontics. Molar rotation occurs when they are used as anchorage units for the canine distal...

    Authors: Reem M. AlShazly, Ahmad F. Almohammad, Hend Salah ElSayed and Amr Ragab EL-Beialy
    Citation: Bulletin of the National Research Centre 2021 45:160
    Content type: Research Published on:

  26. The choice between extraction and expansion treatment is an endless debate in orthodontics. Ethnic and secular variations showed that there was a change in  arch perimeter over the last 50 years. Accordingly,...

    Authors: Omnia A. Elhiny, Mohammed Abou Elyazied and Ghada A. Salem
    Citation: Bulletin of the National Research Centre 2021 45:141
    Content type: Research Published on:

  27. This study aimed at assessing the effect of different kinematics as well as different instrument designs on efficiency of cutting of two heat-treated nickel–titanium systems. Forty resin canals with 30°-angle ...

    Authors: Engy M. Kataia, Mohamed Mokhtar Nagy, Mohamed M. Kataia and Hala Fayek Khalil
    Citation: Bulletin of the National Research Centre 2021 45:120
    Content type: Research Published on:

  28. The oral lymphoepithelial cyst (LEC) is a rare, soft-tissue, developmental cyst, initially presented by Gold in 1962 as a “branchial cleft cyst”. It may occur in the pancreas, tongue, neck, and other regions o...

    Authors: Sana Iqbal, Sufyan Ahmed and Mehwash Kashif
    Citation: Bulletin of the National Research Centre 2021 45:111
    Content type: Case Report Published on:

  30. Using remineralizing agents during and after bleaching procedures could maintain enamel surface, decreasing its erosive susceptibility. This study evaluated the efficacy of an in-office and at-home bleaching m...

    Authors: Shaymaa M. Nagi, Shahinaz H. Nabil and Mohamed H. Zaazou
    Citation: Bulletin of the National Research Centre 2021 45:68
    Content type: Research Published on:

  31. Primary chronic osteomyelitis is a rare occurrence in the pediatric mandible though it exclusively affects the mandible with no age preference. The absence of pus, fistula and sequestration are characteristic ...

    Authors: T. Kavya Priya, Amith Hadhimane, Kirthi Kumar Rai, H. R. Shiva Kumar, Amarnath P. Upasi and Vinayak Gourish Naik
    Citation: Bulletin of the National Research Centre 2021 45:64
    Content type: Case Report Published on:

  32. Oral lichen planus is a chronic inflammatory and immune-mediated disease that affects the oral mucosa. Recent findings have suggested that oral lichen planus is often associated with submucosal fibrotic change...

    Authors: Atsushi Shudo
    Citation: Bulletin of the National Research Centre 2021 45:56
    Content type: Case Report Published on:

  33. To evaluate the antibacterial effect of diode laser and photodynamic therapy using methylene blue dye when used alone or in combination with Moringa oleifera extract on root canal microbes. A total of 50 single r...

    Authors: Doaa M. Sadony, Maram E. Khallaf and Jackline Samir Kamal
    Citation: Bulletin of the National Research Centre 2021 45:53
    Content type: Research Published on:

  34. Comparing shaping ability of Azure and Fanta AF One in rotation and reciprocation. This study was conducted on 40 resin blocks, having canal curvatures 30°-angle and of 16-mm length. The blocks were assigned t...

    Authors: Engy M. Kataia, Mohamed Mokhtar Nagy, Mohamed M. Kataia and Hala Fayek Khalil
    Citation: Bulletin of the National Research Centre 2021 45:42
    Content type: Research Published on:

  35. Coronavirus disease (COVID-19) is considered a highly contagious disease with flu-like symptoms and causing relatively high level of death. It can be transmitted from a person to another through droplets and t...

    Authors: Rasha F. Sharaf and Nihal Kabel
    Citation: Bulletin of the National Research Centre 2021 45:32
    Content type: Research Published on:

  36. This study aimed to evaluate the remaining amount of intra canal medicament in the root canals and their effect on microhardness of radicular dentine. In this study, ninety straight single-rooted teeth were us...

    Authors: Yousra Aly, Nada Omar, Engy M. Kataia, Maram E. Khallaf and Mohamed H. Zaazou
    Citation: Bulletin of the National Research Centre 2021 45:12
    Content type: Research Published on:

  37. This paper outlines the current status and mechanism for identifying dental implants, with emphasis on future direction and updated technology, and covers the existing factors influencing the identification of...

    Authors: Mohammad Ali Saghiri, Peter Freag, Amir Fakhrzadeh, Ali Mohammad Saghiri and Jessica Eid
    Citation: Bulletin of the National Research Centre 2021 45:7
    Content type: Review Published on:

  38. Many factors play a role in the long-term survival of osseointegrated dental implants. Among these, the preservation of crestal bone remains to be the key principal. The aim of this comparative study was to as...

    Authors: Mahmoud Shalash and Ahmad Abdalsamad
    Citation: Bulletin of the National Research Centre 2020 44:184
    Content type: Research Published on:

  39. The study presented here systematically examines the potential involvement of dental, oral and maxillofacial centres (ZMK) in the management of pandemia or in large-scale emergencies. It looks at available mat...

    Authors: Marcus Schiller, Marijatta Pilette, Björn Rahlf, Constantin von See and N.-C. Gellrich
    Citation: Bulletin of the National Research Centre 2020 44:174
    Content type: Research Published on:

  40. The field of laser-based photochemical reactions receives a great promising for additional applications especially for targeting cells, pathogens, or molecules. Limited studies have investigated the impact of ...

    Authors: Mohamed M. Abo El-Dahab, Mostafa Gheith, Nadia Lashin Soliman and Riham Mohamed Aly
    Citation: Bulletin of the National Research Centre 2020 44:170
    Content type: Research Published on:

  41. The purpose of the current study was to inspect and compare the influence of applying continuous rotation and reciprocation motions on the cyclic fatigue resistance of Protaper Next (PTN) file (X2) and WaveOne...

    Authors: Amira Galal Ismail, Manar Galal and Nehal Nabil Roshdy
    Citation: Bulletin of the National Research Centre 2020 44:164
    Content type: Research Published on:

  42. Flexibility during bending is a critical feature that influences the performance and safety of endodontic nickel-titanium rotary instruments. Flexibility of the endodontic files could be assessed via laborator...

    Authors: Amira Galal Ismail, Manar Galal, Mohamed H. Zaazou, Tamer M. Hamdy and Rasha M. Abdelraouf
    Citation: Bulletin of the National Research Centre 2020 44:140
    Content type: Research Published on:

  43. Geometrical designs of nickel-titanium (NiTi) rotary instruments have a considerable influence on their mechanical performance, and thereby have the tendency to fracture.

    Authors: Manar Galal and Tamer M. Hamdy
    Citation: Bulletin of the National Research Centre 2020 44:121
    Content type: Research Published on:

  44. The aim of this study was to compare the effect of different kinematics and operational temperature on cyclic fatigue resistance of Protaper Next, WaveOne Gold, and Twisted File Adaptive files in a static model.

    Authors: Amira Galal Ismail, Manar Galal and Mohamed Mokhtar Nagy
    Citation: Bulletin of the National Research Centre 2020 44:116
    Content type: Research Published on:

  45. Understanding the mental foramen (MF) position and prevalence and location of the anterior loop (AL) is important during clinical and surgical procedures close to the mental foramen to avoid damage to the neur...

    Authors: M. Shalash, Maram E. Khallaf and A. R. Ali
    Citation: Bulletin of the National Research Centre 2020 44:110
    Content type: Research Published on:

  46. The lack of adequate data on the oral health status among the Egyptians is a challenging barrier for the assessment and improvement of oral health needs.

    Authors: Amani Moussa, Eman Ibrahim, Ahmed Esmat, Sherihan Eissa and Magda Ramzy
    Citation: Bulletin of the National Research Centre 2020 44:16
    Content type: Research Published on:

  47. This study was conducted to evaluate the marginal bone height changes around dental implants in mandibular implant-retained complete acrylic overdentures using cone beam computed tomography (CBCT) with impleme...

    Authors: Eman Mostafa Ahmed Ibraheem, Hoda Gaafar Hassan Hammad and Ahmed Mostafa Esmat El-Sisy
    Citation: Bulletin of the National Research Centre 2019 43:198
    Content type: Research Published on: