Characterizing Curing Efficiency of EGCG-Encapsulated Halloysite Nanotube Modified Adhesives for Durable Dentin-Resin Interfaces.

Matrix metalloproteinase (MMP)-induced collagen degradation at the resin-dentin interface remains a significant challenge for maintaining the longevity of dental restorations. This study investigated the effects of epigallocatechin-3-gallate (EGCG), a potent MMP inhibitor, on dental adhesive curing efficiency when encapsulated in halloysite nanotubes (HNTs). EGCG-loaded HNTs were incorporated into a commercial dental adhesive (Adper Scotchbond Multi-Purpose) at 7.

Effects of microabrasion and bleaching on color and shear bond strength of simulated stained-remineralized caries lesions.

Purpose: This study investigated the effects of bleaching and microabrasion on the color and shear bond strength (SBS) of stained-remineralized caries-like lesions (s-RCLs).

Methods: Human enamel specimens were demineralized, stained (coffee/tea), then remineralized (2% NaF and artificial saliva [AS]) to create s-RCLs. Specimens were randomly divided into five groups (n = 18): G1, demineralized/AS; G2, s-RCLs/AS; G3, s-RCLs/at-home bleaching (15% carbamide peroxide [CP)], 6 h/d×7)/AS; G4, s-RCLs/microabrasion (6.

Pulp stones in unerupted teeth: a retrospective analysis using cone-beam computed tomography.

Background: A pulp stone is a calcified mass that develops in the dental pulp of any tooth. Despite many studies examining the relationship between pulp stone formation and non-oral factors, the methods used in these studies have been unable to explain the exact role of these factors alone as distinct from probable effects within the oral cavity environment. Considering that totally unerupted (impacted or developing) teeth are unexposed to the oral cavity's environmental and functional conditions, they provide a more suitable material for studying the effects of these non-oral factors on pulp stone formation.

Evaluation of stress distributions of calcium silicate-based root canal sealer in bulk or with main core material: A finite element analysis study.

This research aimed to assess the stress distribution in lower premolars that were obturated with BioRoot RCS or AH Plus, with or without gutta percha (GP), and subjected to vertical and oblique forces. One 3D geometric model of a mandibular second premolar was created using SolidWorks software. Eight different scenarios representing different root canal filling techniques, single cone technique with GP and bulk technique with sealer only with occlusal load directions were simulated as follows: Model 1 (BioRoot RCS sealer and GP under vertical load [VL]), Model 2 (BioRoot RCS sealer and GP under oblique load [OL]), Model 3 (AH Plus sealer with GP under VL), Model 4 (AH Plus sealer with GP under OL), Model 5 (BioRoot RCS sealer in bulk under VL), Model 6 (BioRoot RCS in bulk under OL), Model 7 (AH Plus sealer in bulk under VL), and Model 8 (AH Plus sealer in bulk under OL).

Comparison of mechanical properties and color stability of various vacuum-formed orthodontic retainers: An in vitro study.

Unlabelled: Vacuum-formed retainer (VFR) is the most used retainer due to its higher aesthetic properties and lower cost, their mechanical properties of are important in determining the stability and long-term use of appliances made out of them.

Aim: This study aimed to evaluate and compare the flexural modulus, surface hardness, and color stability of three different VFR materials.

Methods: Three different VFR materials, namely Duran, Keystone, and Zendura, of 1 mm thickness, were tested after thermoforming for flexural modulus, hardness, and color stability.

The effectiveness of mindfulness training in improving medical students' stress, depression, and anxiety.

Introduction: There is growing interest in Mindfulness-based Stress Reduction (MBSR) program to combat mental distress in medical students. In Saudi Arabia, literature is insufficient about MBSR and its effectiveness. This study aims to measure the effectiveness of MBSR in improving mindful state, stress, anxiety, and depression in medical students.

Three-dimensional analysis for detection of pulp stones in a Saudi population using cone beam computed tomography.

Purpose: To assess the prevalence and distribution of pulp stones in a Saudi population.

Methods: A cone beam computed tomography (CBCT) analysis of 150 upper and 150 lower dental arches was performed. The relationships between pulp stones and age, sex, tooth type, dental arch, orthodontic treatment, caries, and restoration were statistically examined (P < 0.

Perception and Knowledge of Oral and Facial Piercings among Dental Students: Web-based Survey.

Aim: The aim of this web-based questionnaire was to survey dental students to obtain their perception and knowledge of oral and facial piercings.

Materials And Methods: The participants comprised 240 students enrolled in the dental school who were asked to complete 20 close-ended, yes/no, yes/no/do not know, and multiple responses questions. The questionnaire covers general information concerning oral/facial piercing, triggers why youths and early adults get it, probable complications, their appreciation of the possibility of related health conditions, and their knowledge and perception.

Relationship Between Socio-Demographics, Study Skills and Distress Among Pakistani School Students: A Cross-Sectional Study in Riyadh, Saudi Arabia.

Purpose: The increasing prevalence of distress among students is of global concern. Several factors such as school and family environment and ineffective study skills could influence mental health. The study explored the rate of distress symptoms among school students' and its relationship with their study skills, stressors and demographic factors.

Clinical and radiographic outcomes of regenerative endodontic treatment performed by endodontic postgraduate students: a retrospective study.

Objectives: Regenerative endodontic treatment is a clinical procedure aimed at biologically regenerating damaged root canal tissue of immature permanent teeth. This study aimed to report the outcomes of regenerative endodontic treatment performed by endodontic postgraduate students.

Materials And Methods: Clinical and radiographic data of 27 patients, aged 10-22 years, who underwent regenerative treatment of immature permanent teeth from 2015 to 2019 were followed up, wherein clinical and radiographic examinations were performed for each patient.

Association Between Obesity and COVID-19 Disease Severity in Saudi Population.

Background: The persistent coronavirus disease 2019 (COVID-19) outbreak has placed a significant burden on the scientific and medical professions. The study examined the association between body mass index (BMI), stratified by category, and severe form of COVID-19, and to explore the influence of demographic characteristics and other known risk factors.

Methods: This was a retrospective analysis based on COVID-19 data from the Saudi Arabian Ministry of Health.

Water Sorption, Water Solubility, and Rheological Properties of Resin-Based Dental Composites Incorporating Immobilizable Eugenol-Derivative Monomer.

The present study aimed to evaluate the properties of new dental formulations incorporating a new polymerizable-derivative of eugenol (EgGMA). The experimental composites were prepared (by weight) with 35% resin-based matrix (1:1, bisphenol A-glycidyl methacrylate/triethylene glycol dimethacrylate) and 65% reinforcing materials (4:3, hydroxyapatite/zirconium oxide). A portion of 0.

Personal factors associated with carpal tunnel syndrome (CTS): a case-control study.

Background: Carpal tunnel syndrome (CTS) is one of the most common nerve entrapments in the upper limb. In Saudi Arabia, few studies have investigated CTS in the general population. This study aimed to determine the association between personal factors and CTS.

Comparison of Fracture Resistance of Primary Incisors Restored with Different Intracanal-Reinforcement Materials.

Aim: To evaluate the effects of placing short posts made of different restorative materials on the fracture resistance of root canals in primary incisors of primary teeth.

Materials And Methods: The root canals of 40 extracted primary incisors were prepared and filled with Vitapex and randomly divided into five groups of 8 each. In Groups 1-4, a post space was created and filled with different restorative materials (Tetric N-Ceram Bulk Fill, AeliteFlo, Filtek Z250 XT, and GC Fuji II LC capsule), while Group 5 was kept filled with Vitapex as a control.

Clinical characteristics and risk factors of patients with severe COVID-19 in Riyadh, Saudi Arabia: A retrospective study.

Background: COVID-19 is newly emerging infectious disease that spread globally at unpredictable and unique pattern to the extent that the World Health Organization announced COVID-19 as a pandemic in the first couple months of 2020. This study aims to describe clinical and demographic features of COVID-19 patients and the influence of various risk factors on the severity of disease.

Methods: This research is a retrospective study based on Saudi Arabia's ministry of health's Covid-19 data.

Dental caries prevalence among Type 1 diabetes mellitus (T1DM) 6- to 12-year-old children in Riyadh, Kingdom of Saudi Arabia compared to non-diabetic children.

Objective: The aim of this study was to compare the prevalence of dental caries among groups of 6-12-year-old children with and without Type 1 diabetes mellitus (T1DM) in Riyadh, Saudi Arabia, taking into account oral health behaviour, diet, and salivary parameters.

Methods: The study was designed as a comparable study of dental caries experience between T1DM and non-diabetic groups of children. The total sample size of 209 participants consisted of 69 diabetic and 140 non-diabetic children.

Root and Canal Morphology of Mandibular Premolar Teeth in a Kuwaiti Subpopulation: A CBCT Clinical Study.

Objective: To study the root and root canal morphology of mandibular premolars in a Kuwaiti subpopulation using cone-beam computed tomography (CBCT).

Methods: 152 CBCT images were obtained from the radiology department archives of four dental centers in Kuwait. A total of 476 mandibular premolar teeth were analyzed by two observers.

The prevalence of radix molaris in the mandibular first molars of a Saudi subpopulation based on cone-beam computed tomography.

Objectives: The purpose of this study was to determine the incidence of radix molaris (RM) (entomolaris and paramolaris) in the mandibular first permanent molars of a sample Saudi Arabian subpopulation using cone-beam computed tomography (CBCT).

Materials And Methods: A total of 884 CBCT images of 427 male and 457 female Saudi citizens (age 16 to 70 years) were collected from the radiology department archives of 4 dental centers. A total of 450 CBCT images of 741 mature mandibular first molars that met the inclusion criteria were reviewed.

The relationship between study skills and depressive symptoms among medical residents.

Background: The cost of depression among residents is staggering as it extends into the quality and safety of patient care. Finding an explanation to resident depression by investigating the associated factors is therefore important. Study skills can be a possible factor, and a clear gap in the literature exists in this regard.

Assessment of knowledge and attitude toward stem cells and their implications in dentistry among recent graduates of dental schools in Saudi Arabia.

Background: To evaluate the knowledge and attitude level of recent dental graduates in Saudi Arabia toward stem cells and their potential therapeutic applications.

Methods: In this cross-sectional study, a questionnaire was distributed among 606 recent graduates from 14 dental schools in Saudi Arabia. Fifteen statements were formulated to address the knowledge component with "yes" or "no" or "I do not know" answer and 10 statements were designed to assess the attitude level with Likert 5-point response scale.

Family physicians' utility of social media: a survey comparison among family medicine residents and physicians.

Introduction: Social media has become ubiquitous and has brought a dramatic change in health services. Little is known about its use by family physicians and residents for personal or professional purpose. The aim of the current study was to evaluate the utility of social media among family medicine residents and consultants.

Effectiveness of oral health education intervention among female primary school children in Riyadh, Saudi Arabia.

Objective: This study aimed to examine the effectiveness of oral health intervention on the improvement in knowledge and self-reported oral health behavior among 6-8 year old female primary school children in Riyadh, Saudi Arabia.

Materials And Methods: The sample consisted of 1661 girls in primary schools who are 6 to 8-year-olds (first, second and third graders). The children's level of knowledge was assessed by a self-administered questionnaire that was formulated for this specific age and divided into two parts; oral health knowledge and self-reported oral health behavior.

Validation of a new study skills scale to provide an explanation for depressive symptoms among medical students.

Background: Medical students are faced with enormous academic demands that may influence their emotional wellbeing. The high rate of depression among medical students and its negative impact is an impetus to find explanation for the factors associated with it. Study skills that students possess might be such a factor.

Effect of thyroidectomy with totally preserved recurrent laryngeal nerve on the objective vocal functions.

Objective: To study the effect of thyroidectomy with totally preserved recurrent laryngeal nerve (RLN) on the objective vocal functions.

Methodology: It is a prospective pilot study of 10 patients undergoing thyroid surgery on whom to study the effect of thyroidectomy with totally preserved RLN on the objective vocal functions. Patient history and demographic data were collected at the time of admission and in each period of assessment average fundamental frequency; absolute jitter, shimmer, and others were measured.