Alaa Ha Sabrah الاء حسين صبره

• Bachelor in Dental Surgery Master in Dental sciences with major Operative Dentistry and minor preventive dentistry , PhD in dental sciences
• Professor (Associate ) at University of Jordan

Objective to investigate the effectiveness of diluted antibiotic hydrogels in endodontic regeneration procedures. Materials and Methods One conventional treatment (calcium hydroxide) and two experimental treatments containing 1 mg/mL antibiotic in gel (MC-TAP and MC-DAP) were prepared for this study. The effect of these medicaments on the prolifer...

Objectives Some dental schools depend on the students’ academic performance for admission purposes. This research aimed at investigating the correlations between dental students’ performance in specific academic courses and their preclinical and clinical counterparts, and the correlations between students’ performance in the pre-clinical practical...

Background In a country where admission to dental schools is based solely on the cognitive abilities of students, the aim of the study was to investigate the correlation between high school grade point average and graduating academic achievement for dental students; moreover, determine whether a correlation exists between dental students’ graduatin...

Objectives: The aim of this study is to investigate the change in stress and anxiety level caused by practicing dentistry during COVID-19 pandemic, along with any financial impact and changes in dentists' cross infection control methods and history taking. Methods: An online questionnaire was conducted between June 10 th and 2 nd of July 2020 which...

Background: In a country where admission to dental schools is based solely on the cognitive abilities of students, the aim of the study was to investigate the correlation between high school grade point average and graduating academic achievement for dental students. Moreover, determine whether a correlation exists between dental students’ graduati...

Objective To compare the effect of two bleaching systems (bleaching gel and whitening strips) on the color change, roughness, and microhardness of enamel and two resin composites. Material and Methods Two cavities were prepared on bovine enamel specimens (n = 16) and restored with two composites: a nano-hybrid [Herculite Ultra (HU)] and a micro-hy...

Background/purpose Triple antibiotic paste (TAP) has been successfully used in revascularization procedure. However, one of the problems associated with TAP use is teeth discoloration, which is attributed to the presence of minocycline constituent. The aim of this study is to investigate the discoloration effect of different concentrations of tripl...

The objective was to determine the degree of fluctuating asymmetry in the expression of 13 dental morphological traits among adult Jordanians. Cone beam computed tomography images for the dentitions of 150 adult Jordanians (67 males, 83 females; age range = 18-58, mean ages 28.2, SD = 10.0 years) were studied in 2017. The traits were classified usi...

Objectives: To investigate the effect of toothpaste abrasive level on the progression of non-carious cervical lesions (NCCLs) using 3D-image subtraction. Methods: Upper first premolars were allocated into seven groups (n = 16) of toothpaste/abrasive slurries: A-Zeodent113/5%, B-Zeodent124/10%, C-Zeodent103/15%, D-Sensodyne Pronamel, E-Crest Cavi...

Objectives: The aim of this study was to evaluate the shear bond strength of repaired composite resin restorations using one-step Single Bond Universal adhesive. Materials and Methods: Sixty cylindrical composite samples (8 x 9 mm each) were prepared from Filtek Z350 XT, light-cured and stored for 6 weeks. The surface of each sample was bur-roughen...

Objectives To determine the combined effect of fatigue cyclic loading and thermocycling (CLTC) on the shear bond strength (SBS) of a resin cement to zirconia surfaces that were previously air-abraded with aluminum oxide (Al2O3) particles at different pressures. Materials and Methods Seventy-two cuboid zirconia specimens were prepared and randomly...

Objectives: In a country where admission to dental schools is based on academic achievement of students, the aim of the study is to investigate the correlation between the practical achievements and the academic performance of dental students. In addition to determining if a correlation exists between dental students' grades in the preclinical cour...

The aim of this study was to investigate the residual antibacterial effect of human radicular dentin treated with various concentrations of triple antibiotic paste and double antibiotic paste (DAP). Sterilized dentin specimens were randomly assigned to 6 treatment groups and a no-treatment control group (n = 45 per group). For treatment groups, spe...

We investigated the changes in physiochemical properties of dentin surfaces after performing different endodontic regeneration protocols. Human dentin slices were randomized into 4 treatment groups and 1 untreated control group (n = 10). One treatment group was irrigated with sodium hypochlorite (NaOCl) for 5 minutes followed by EDTA for 10 minutes...

Objectives: The aim of this study was to investigate the effect of different endodontic regeneration protocols on wettability, roughness and chemical composition of surface dentin.Methods: Human third molar dentin specimens were randomized into four treatment groups and a no treatment group (n=10). One treatment group was irrigated with sodium hypo...

To investigate the effect of various dilutions of antibiotic medicaments used in endodontic regeneration on the survival of human dental pulp stem cells (DPSCs) and to determine their antibacterial effect against established Enterococcus faecalis biofilm. The cytotoxic and antibacterial effects of different triple (TAP) and double antibiotic paste...

Objective: To determine the influence of socioeconomic status (SES) on normative and perceived orthodontic treatment need, satisfaction with dental appearance, and regularity of dental attendance. Materials and methods: The sample consisted of 550 adolescents (232 boys, 318 girls) aged 13 to 17 years who were categorized according to SES into th...

In this study we compared the antibacterial effect of triple antibiotic paste (TAP), double antibiotic paste (DAP), and calcium hydroxide [Ca(OH)2] against Enterococcus faecalis and Porphyromonas gingivalis biofilm. The minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC), minimum biofilm inhibitory concentration (MBIC),...

This study compared the traditional radiotracer method (Rt) for determination of dentifrice abrasivity to the recently introduced surface profile (Sp) method (ISO 11609). Specimens from human root dentin were prepared for each method and randomly assigned to 8 dentifrice/abrasive groups (n=8), of wide abrasivity range. Aqueous dentifrice slurries o...

The purpose of this study was to evaluate the influence of full-contour (Y-TZP) zirconia surface roughness (glazed vs. as-machined) on the wear behavior of glass-ceramics. Thirty-two full contour Y-TZP (Diazir®) specimens (hereafter referred to as zirconia sliders) (ϕ = 2 mm, 1.5 mm in height) were fabricated using CAD/CAM and sintered according to...

Objective: To investigate the effects of polishing techniques on the surface roughness of Y-TZP ceramic and on the wear behavior of synthetic hydroxyapatite (HA). Methods: Thirty-two full-contour Y-TZP (Diazir(®)) sliders (φ=2 mm × 1.5 mm in height) were manufactured using CAD/CAM, embedded in acrylic resin using brass holders, and randomly allo...

Triple antibiotic (TA) and calcium hydroxide [Ca(OH)2] pastes have been used as intra-canal medicaments in pulp regeneration. Recently, double antibiotic (DA) paste has been suggested to avoid tooth discoloration usually caused by TA. Objective: To compare the antibacterial effect of TA, DA and Ca(OH)2 saturated solutions against Enterococcus fae...

The use of yttria-stabilized tetragonal zirconia polycrystal (Y-TZP), normally employed as a framework for all-ceramic restorations, have now started to be used without any veneering ceramics in patients with parafunctional activities. Objective: To evaluate the influence of Y-TZP surface roughness on the wear behavior (volume/height loss) agains...

Full-contour yttrium-stabilized tetragonal zirconia polycrystal (Y-TZP) restorations have started to be advocated in clinical situations where occlusal/palatal space is limited or to withstand parafunctional activities. Objectives: To investigate the effects of different polishing techniques on the surface roughness of Y-TZP (Ardent Dental, Inc)...

Dentistry in Jordan is an attractive profession due to the high social standard it provides. This study aimed to investigate whether dentists would choose dentistry again and whether their professional expectations would change after years of practice. Of special interest were possible differences according to gender, age, degree and place of work....