Molecular Diagnosis of Endosymbiont in -Positive Samples in Laboratory Conditions and in the Hospital Environments.

Background: We aimed to identity endosymbiont in -positive samples in natural and laboratory conditions.

Methods: Overall, 134 samples were collected from hospital environments. Microscopic and PCR test were used for detection of and The real-time PCR method was used to check the active presence of within under natural conditions from hospital samples and in co-culture laboratory conditions.

Assessment of the Need for Designing an Interactive Educational Tool on Exophytic Lesions of the Oral Mucosa.

Introduction This study sought to evaluate the necessity of creating an interactive educational resource for instructing dental students on oral exophytic lesions. It also aimed to determine the validity and reliability of a questionnaire designed to assess the quality of educational software tailored to these lesions. Materials and methods This descriptive cross-sectional study involved 102 dental students from Mashhad University of Medical Sciences, Iran, who had completed the theoretical course on oral exophytic lesions.

Genotyping of Isolated from Hospital Environments and Thermal Water of Recreational Baths in Markazi Province, Iran.

Background: Due to the opportunism character of , the presence of this parasite in the thermal water of recreational baths and hospital environments can be a risk to the health of staff, patients and others. The aim of this study was to investigate the distribution of potentially pathogenic genotypes isolated from the hospital environment and the thermal water of recreational baths in Markazi Province, central Iran.

Methods: Overall, 180 samples including thermal water from recreational baths in Mahallat City and dust, soil and water from different hospitals of Arak, Farahan and Komijan cities, central Iran were collected.

Evaluation of national dental curriculum in Iran using senior dental students' feedback.

Background: Dental curriculums require regular revision to stay up to date in scientifical and societal fields. Senior dental students are among the main stakeholders of such curriculums. The present study investigated the opinions of Iranian senior dental students regarding the adequacy of their dentistry program and the national dental curriculum in training a competent dentist, the program's content, and its structure.

The Application of a Recombinant Antimicrobial Peptide of Thrombocidin-1 Expressed in as a Novel Approach Against Some Oral Pathogenic Bacteria: An Study.

Objective: Oral infections and dental caries are considered serious health problems. Therefore, searching for new agents with antimicrobial properties seems to be crucial. This study aimed to evaluate the antimicrobial activity of the recombinant Thrombocidin-1 [TC-1] peptide on some oral pathogens.

The validity of laser fluorescence (LF) and near-infrared reflection (NIRR) in detecting early proximal cavities.

Objectives: Diagnosing cavitated proximal lesions is important for therapeutic decisions. This clinical study aimed to determine the validity of laser fluorescence (LF) and near-infrared reflection (NIRR) techniques for detecting early proximal cavities.

Materials And Methods: The study included 43 proximal surfaces in 15 females who had limited radiolucent lesions in their bitewing radiographs.

The effect of sodium hexametaphosphate on sensitivity and whitening effectiveness of an at-home bleaching gel: a randomized, triple-blinded clinical trial.

Objective: Bleaching sensitivity (BS) is the most common adverse effect of tooth bleaching treatments. This study evaluated the effect of adding 1% sodium hexametaphosphate (SHMP) on BS and the whitening effectiveness of a bleaching gel.

Method And Materials: Two maxillary quadrants from 26 patients were randomly assigned to the experimental and control groups in a split-mouth design.

Molecular Detection of Campylobacter Species: Comparision of with , and Sequencing.

Background: spp. are the main cause of human gastroenteritis. The sequencing is one of fast molecualr method to detect this fastidious.

A New Approach Against Some Oral Pathogenic Bacteria Using a Chimeric Antimicrobial Peptide Derived from the Camel Milk; Lactoferrampin - Lactoferricin Chimer.

Objectives: The present study was conducted to evaluate the antimicrobial effects of the recombinant chimer present in the lactoferrampin-lactoferricin [LFA-LFC] derived from the camel milk on some oral bacteria responsible for dental caries and endodontic failures.

Methods And Material: The antimicrobial activity was assessed on the Streptococcus mutans [ATCC 35668], Streptococcus salivarius [ATCC 9222], Streptococcus oralis [ATCC 35037], and Enterococcus faecalis [ATCC 29212], using the microbroth dilution method. The cytotoxicity analysis was done through the MTT method on the human gingival fibroblasts.

The effective and safe method for preventing and treating bacteria-induced dental diseases by herbal plants and a recombinant peptide.

Background: This study was conducted aimed at evaluating the antibacterial property of the recombinant peptide of bacteriocin entrocin P (EnP), the essential oil of Cuminum cyminum, and the extract of on some oral pathogens. Besides, the cytotoxicity of EnP was evaluated.

Material And Methods: The antimicrobial property was tested on (ATCC 35668), (ATCC 9222), (ATCC 35037), and (ATCC 29212), using the microbroth dilution method.

The efficacy and complications of several bleaching techniques in patients after fixed orthodontic therapy. A randomized clinical trial.

This study aimed to evaluate the efficacy and complications of several bleaching methods in patients with discolored teeth after orthodontic treatment. This randomized clinical trial involved 60 volunteers (31 women, 29 men) aged 14 to 30 years, who finished fixed orthodontic therapy at least three months before the study commencement and complained of discoloration on upper front teeth. The subjects were divided into four groups by treatment.

Effect of Adding Nano Size Silica on Setting Time and Porosity of Mineral Trioxide Aggregate.

Introduction: The aim of this study was to evaluate the effect of addition of nano-silica (SiO) to mineral trioxide aggregate (MTA) on its setting time and porosity.

Methods And Materials: The concentration 8% of nano-silica were prepared and added to the MTA powder. After mixing with water the setting time and porosity were evaluated and compared with pure MTA.

Effect of Non-Vital Bleaching on the Durability of Resin⁻Dentin Bond with an Ethanol-Based Etch-And-Rinse Adhesive.

To evaluate the bleaching procedure and application of sodium ascorbate on dentin bond durability, the enamel surface of intact human third molars ( = 18) were removed, and the teeth were randomly divided into two groups for immediate and six-month bond strength evaluation. The specimens were further assigned into three subgroups according to treatment procedure, as follows: subgroup A, no bleaching (positive control) was performed prior to the etch-and-rinse bonding with single bond and subsequent build-up with Z250 composite; subgroup B, the samples were bleached with 20% carbamide peroxide 6 h/day for five consecutive days prior to bonding; and subgroup C, bleaching was performed as in subgroup B, after which 10% sodium ascorbate was applied on dentin surface for 10 min before the bonding procedures. A microtensile bond strength test was performed and the failure modes were evaluated under a stereomicroscope.

Low Prevalence of Infectious Diarrhea Samples of Pediatric Patients in Arak, Iran.

Background: is an aquatic bacterium that can cause a spectrum of infectious diseases, including both gastrointestinal and extraintestinal infections. Due to the high rate of diarrheal infections in pediatric patients in central Iran, this study was designed to determine the frequency of in diarrhea samples from children in this region.

Methods: In this descriptive cross-sectional study, diarrheal stool specimens were collected from 200 children admitted between February and October of 2015 to educational and medical centers affiliated with the Arak University of Medical Sciences.

Comparison of Tooth Discoloration Induced by Calcium-Enriched Mixture and Mineral Trioxide Aggregate.

Introduction: The aim of this in vitro study was to evaluate the tooth discoloration induced by calcium-enriched mixture (CEM) cement and mineral trioxide aggregate (MTA).

Methods And Materials: Forty five endodontically treated human maxillary central incisors were selected and divided into three groups (n=15) after removing the coronal 3 mm of the obturating materials. In the MTA group, white MTA plug was placed in pulp chamber and coronal zone of the root canal.

The curli biogenesis genes expression level is unassociated with Enterobacter cloacae hsp60 clusters and PFGE genotypes.

The objective of this study was to determine the correlation between Enterobacter cloacae complex subspecies and clusters involved in UTI infections and specific pulsotypes, and to assess the contribution of major curli biogenesis genes (csgD, csgA) expression level to pathogenesis of clusters and genotypes. Based on the PFGE analysis, 37 different profiles were observed among which 8 profiles were common types. Real time PCR of csgD and csgA genes of 50 E.

The efficacy of laser-assisted in-office bleaching and home bleaching on sound and demineralized enamel.

Aims: This study investigated the effectiveness of laser-assisted in-office bleaching and home-bleaching in sound and demineralized enamel.

Materials And Methods: The sample consisted of 120 freshly-extracted bovine incisors. Half of the specimens were stored in a demineralizing solution to induce white spot lesions.

Particular Distribution of Enterobacter cloacae Strains Isolated from Urinary Tract Infection within Clonal Complexes.

Background: Based on biochemical properties, Enterobacter cloacae represents a large complex of at least 13 variant species, subspecies, and genotypes that progressively identified as the most species causing hospital-acquired infections. The aim of this study was to determine the relevance between phylogenetically related strains within the E. cloacae complex and the frequency of urinary tract infection caused by them.

Microhardness of demineralized enamel following home bleaching and laser-assisted in office bleaching.

Background: There is little data regarding the effect of tooth whitening on microhardness of white spot lesions. This study was conducted to investigate the effect of home-bleaching and laser-assisted in-office bleaching on microhardness of demineralized enamel.

Material And Methods: Forty bovine incisors were selected and immersed in a demineralizing solution for 12 weeks to induce white spot lesions.

Genotyping of vancomycin resistant enterococci in arak hospitals.

Background: Enterococcal species have emerged as important pathogens in Iran as well as throughout the world. With the increased use of vancomycin, Vancomycin-Resistant Enterococci (VRE) has become an important nosocomial pathogen.

Objectives: The aim of the present study was to determine the incidence and antimicrobial susceptibility pattern of VRE and also to determine the most important genes that cause resistance to vancomycin in clinical samples in Arak, Iran.

Natural model training, an alternative way to enhance learning in pediatric dentistry.

Objective: Educational teaching of the diagnosis of resorbed root for pulpectomy in deciduous teeth radiography has always been a big challenge in pediatric dentistry. The purpose of the study was to propose a new practical methodology to improve the quality of learning in students of dentistry.

Materials And Methods: Extracted deciduous teeth were molded in the transparent epoxy resin as their real position in the jawbone.

Anterior traumatic dental injuries in East Iranian school children: prevalence and risk factors.

Introduction: The aim of this cross-sectional study was to determine the prevalence and etiology of traumatic dental injuries (TDI) in school children of the Northeast of Iran. The type of involved teeth, the place of injury and treatment quality as well as the relationship between TDI and anatomic predisposing factors such as overjet and lip coverage were evaluated.

Methods And Materials: A total of 778 school children were clinically examined for signs of trauma to their permanent teeth and the amount of overjet and lip coverage were also recorded.

Cone-beam computed tomography evaluation of maxillary first and second molars in Iranian population: a morphological study.

Introduction: The aim of this in vitro study was to identify the root and canal morphology of maxillary first and second molars in Iranian population by taking and analyzing cone-beam computed tomography (CBCT) scans.

Methods And Materials: Extracted maxillary first (n=125) and second (n=125) molars were collected from native Iranians and scanned by using a CBCT scanner. The number of roots and configuration of root canal system were classified according to Vertucci's classification.

Ethanol ablation of extradigital solid glomus tumors.

Glomus tumors are predominantly benign neoplasms accounting for less than 2% of all soft tissue tumors. While generally solitary, multiple lesions have been reported in approximately 10% of cases. Glomus tumors are typically under 1 cm in dimension accompanied by the classic triad of symptoms: debilitating pain, pinpoint tenderness, and hypersensitivity to cold temperatures.

Evaluation of the effect of diacetyl morphine on salivary factors and their changes after methadone therapy.

Objectives: Psychoactive drugs are responsible for pathological changes in the mouth including dental caries, which most troublesome. The aim of the present study was to evaluate the effect of heroin on several salivary factors which are involved in the oral health and their changes after methadone maintenance therapy (MMT).

Materials And Methods: Forty patients with heroin abuse history, who referred to Imam Reza Hospital for MMT were included.