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Dentistry Commons

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Beirut Arab University

2021

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Articles 1 - 8 of 8

Full-Text Articles in Dentistry

A Comparison Between The Effect Of Different Pressures Of Air Particle Abrasion Before And After Sintering With And Without Zirconia Liner On Bond Strength Of Resin To Zirconia Surface, Lina Mohamad Saadeh, Ehab A. Farghaly, Mohammad M. Rayyan, Essam Osman Nov 2021

A Comparison Between The Effect Of Different Pressures Of Air Particle Abrasion Before And After Sintering With And Without Zirconia Liner On Bond Strength Of Resin To Zirconia Surface, Lina Mohamad Saadeh, Ehab A. Farghaly, Mohammad M. Rayyan, Essam Osman

BAU Journal - Creative Sustainable Development

This study aimed to compare the effect of different pressures of air particle abrasion 2 and 4 bars before and after sintering with and without zirconia liner on SBS of resin to zirconia Surface. Materials and Methods: 54 zirconia cuboids 8×8×3 mm were milled and divided into 6 equal groups (N=9) according to surface treatment; sintered with ceramic liner application and 2 bars pressure (SL2) and with 4 bars pressure (SL4), sintered with no ceramic liner and 2 bars pressure (SN2) and 4 bars pressure (SN4), unsintered with no ceramic liner and 2 bars pressure (UN2) and 4 bars pressure …


Evaluation Of Root-End Resection With Conventional And Ultrasonic Methods: A Single-Blind, Randomized In-Vitro Study, Mohammad Al Shammaa, Roula S. Abiad, Nayer Abo Elsaad Nov 2021

Evaluation Of Root-End Resection With Conventional And Ultrasonic Methods: A Single-Blind, Randomized In-Vitro Study, Mohammad Al Shammaa, Roula S. Abiad, Nayer Abo Elsaad

BAU Journal - Creative Sustainable Development

The root-end resection is considered critical endodontic surgical procedure. Three millimeters of the root tip is resected and root-end cavity with parallel walls and comparable depth is cut to receive a root-end filling. The literature discussed dentinal cracks after root canal instrumentation and/or root dentine cutting. The aim of the present study was to assess cracks at root ends after resection with conventional versus ultrasonic techniques. Material and Methodology: Thirty-two extracted human lower premolar teeth with single root were used. Their root canals were prepared and received gutta-percha. Sixteen roots Group 1 were resected using tungsten carbide fissure burs, while …


Eradication Of Enterococcus Faecalis In Conventional Endodontic Retreatments (A Randomized Clinical Trial), Fadl H. Khaled, Roula S. Abiad, Khaled Abd El Galil, Essam Osman Nov 2021

Eradication Of Enterococcus Faecalis In Conventional Endodontic Retreatments (A Randomized Clinical Trial), Fadl H. Khaled, Roula S. Abiad, Khaled Abd El Galil, Essam Osman

BAU Journal - Creative Sustainable Development

Enterococcus faecalis is the most common bacteria isolated in conventional endodontic retreatments. Aim: To compare the impact of three irrigation modalities on the elimination of the isolated microbial strains of Enterococcus faecalis. Materials and Methods: Thirty patients requiring conventional endodontic retreatment for one of their mandibular premolars and tested positive for E. faecalis were chosen. Patients were randomly divided into three groups (n=10) according to the irrigation modality to be used; group I: syringe irrigation (NaOCl 2.625%), group II: NaOCl 2.625%+EndoActivator and group III: NaOCl 2.625%+diode laser. Before obturation, samples S2 were collected and PCR analysis was performed to identify …


Effect Of Different Irrigation Regimens On Enterococcus Faecalis Elimination From Infected Root Canals (An In-Vitro Comparative Study), Fadl Khaled, Roula Abiad, Khaled Abd El Galil, Essam Osman Oct 2021

Effect Of Different Irrigation Regimens On Enterococcus Faecalis Elimination From Infected Root Canals (An In-Vitro Comparative Study), Fadl Khaled, Roula Abiad, Khaled Abd El Galil, Essam Osman

BAU Journal - Health and Wellbeing

Microorganisms harbored in the complexities of root canal systems might lead to endodontic failures and development of apical periodontitis. Enterococcus faecalis is the most common isolated bacteria in these cases. Aim: This study was conducted to compare the efficiency of four irrigation regimens on the elimination of an inoculated strain of E. faecalis. Materials and Methods: Forty single rooted extracted premolars were inoculated with a standard strain of Enterococcus faecalis (ATCC 29212) and incubated at 37˚C for two weeks to allow infection of the dentinal tubules. The bacterial suspension was replaced with a new one every 48 hours. The teeth …


Maintaining Root Canal Curvatures After Preparation With Different Nickel-Titanium Rotary Systems (A Comparative In Vitro Study), Wael Betbout, Mohammad Al Shammaa, Roula S. Abiad May 2021

Maintaining Root Canal Curvatures After Preparation With Different Nickel-Titanium Rotary Systems (A Comparative In Vitro Study), Wael Betbout, Mohammad Al Shammaa, Roula S. Abiad

BAU Journal - Creative Sustainable Development

The ongoing advancement of materials and methods for root canal instrumentation is resulting in improved techniques with minimal variations to the canal morphology. One standard for assessment of the shaping quality of curved root canals is preparation-induced straightening of the canal. The aim of the study: To compare the effects of 2 Nickel-Titanium rotary systems, 2Shape (Micro-Mega, Besançon, France) and ProTaper Next (Dentsply,Sirona, Ballaigues, Switzerland), on maintaining the distobuccal canals curvature of extracted human maxillary molar teeth using periapical radiographs. Materials and methods: In this study a total of 26 distobuccal roots of upper maxillary molars were used and divided …


Covid-19: What About Dentists?, Hania Alameddine, Julien Issa, Nayer Aboelsaad Apr 2021

Covid-19: What About Dentists?, Hania Alameddine, Julien Issa, Nayer Aboelsaad

BAU Journal - Health and Wellbeing

Coronavirus (COVID-19) has been associated with person-to-person transmission. This includes droplets inhalation, exposure to saliva, and contact with the oral or nasal mucosa. The World Health Organization (WHO) made it public that the novel coronavirus initiated an international public health emergency. COVID-19 cases are rising up until this day, as of End-April 2021, around 141 million confirmed cases and 3 million deaths were reported worldwide. Due to the characteristics of dental clinics, dental health care personnel are at a higher risk of getting exposed to the COVID-19 infection. Thus, there is an urgent need to improve the current implemented recommendations …


Comparative Study Of The Effect Of Three Different Irrigating Techniques On Debris And Smear Layer Distribution In Root Canals (An In Vitro Study), Maysoun Mohamad Ahmad, Mohamed Atef Ibrahim, Amr Abdallah Apr 2021

Comparative Study Of The Effect Of Three Different Irrigating Techniques On Debris And Smear Layer Distribution In Root Canals (An In Vitro Study), Maysoun Mohamad Ahmad, Mohamed Atef Ibrahim, Amr Abdallah

BAU Journal - Health and Wellbeing

The aim of this study was to compare, in vitro, the cleaning efficacy of three different irrigation techniques: syringe irrigation (Navitip) using NaOCl, sonic irrigation system (EndoActivator), and passive ultrasonic irrigation system (PUI) on debris and smear layer distribution in the root canal at three different levels. Materials and Methods: Sixty freshly extracted single-rooted human mandibular premolars were decoronated to a standardized length of twenty millimeters. Specimens were shaped to IRace 25 size and irrigated with 3 mL 2.5% NaOCl between instrumentation. Teeth were divided randomly into three equal groups: Group I (n=20): Irrigation manually with a syringe (Navitip) (n=20), …


Knowledge, Attitude And Practice Of Hepatitis B Virus Infection Among Dentists, Darine Al Bakri, Mohammad Itani, Mirna Fawaz Apr 2021

Knowledge, Attitude And Practice Of Hepatitis B Virus Infection Among Dentists, Darine Al Bakri, Mohammad Itani, Mirna Fawaz

BAU Journal - Health and Wellbeing

Dentists are at high risk for contracting Hepatitis B virus (HBV), which leads to severe liver disease. Proper infection control measures are supposed to be in place to avoid transmission, especially with the exposure to blood that dentists are at risk of. A cross-sectional study with quantitative method using a valid research questionnaire. A convenience sample of 101 dentists from around Lebanon participated in the study. The results showed that 83% of the participating dentists were vaccinated yet only 21% received the required dose for prevention against HBV. The dentists had moderate to high knowledge of HBV infection control measures, …