Evaluation of the Effect of Applying Chitosan, Neem, Tulsi, Aloe vera, and Chlorhexidine Solutions on the Shear Bond Strength of Composite to Dentin.

Statement Of The Problem: Dentin adhesion is challenging and needs modifications. Newly introduced nature-derived materials may be a useful solution in improving dentin adhesion. The use of natural antimicrobial agents for pretreating prepared dentin surfaces before restoration has become of interest.

An innovative method of the vertical coupling effect improvement to the tandem Cu(In, Ga)Se/perovskite solar cells using Ag cluster nanostructures.

The efficiency of double-junction CIGS/Perovskite-based solar cells has significantly improved through recent research. This study presents a new plasmonic structure for these optical devices, utilizing cluster nanostructures to increase photon absorption between 650 and 1137 nm wavelength ranges. The proposed nanostructure includes two vertically coupled silver nanoparticles embedded at the center of the bottom active layer (CIGS) that absorb most of the incoming light to CIGS within the active layer.

Comparison the Voice Onset Time (VOT) of Postlingual Cochlear Implant Users and Normal Peers in the CAPE_V Sentences as Continues Speech Task.

Background: Auditory perception plays a crucial role in speech and language development, emphasizing concerns about hearing loss. While cochlear implantation (CI) nearly tackles challenges associated with postlingual hearing loss in adults, the importance of "auditory feedback" and acoustic assessment becomes crucial for evaluating speech disorders and devising effective treatments. This study aims to address the gap in assessing Voice Onset Time (VOT) as an indicator of nuanced variations in the speech of CI users during a continuous speech task.

Spatial Evaluation of Oral Lichen Planus Patients Referred to Shiraz Dental School, Iran: a Medical Geography Approach.

Statement Of The Problem: Oral lichen planus (OLP) is an important inflammatory disease concerning its tendency to malignancy. The etiopathogenesis of this disease is still unknown. Medical geography uses geographic techniques to study factors related to location that cause uneven distribution of disease.

Reconstruction of Natural Smile and Splinting with Natural Tooth Pontic Fiber-Reinforced Composite Bridge.

Teeth replacement is challenging in old patients with severe periodontal disease, limiting prosthetics treatment options. Here, we report a fiber-reinforced composite (FRC) resin bridge using natural tooth pontic in a patient with severe periodontitis. A 60-year-old lady complaining of teeth mobility was diagnosed with severe periodontitis, recession, bone loss, and crowding in the anterior maxillary teeth.

A Cepstral Peak Prominence (CPP) Voice Analysis in Iranian Post-lingual Deaf Adult Cochlear Implant Users.

Objective: In standardized connected speech samples, cepstral peak prominence (CPP) and smoothed CPP (CPPS) have been described as accurate parameters to evaluate voice quality. Lack of normal auditory feedback in post-lingually deaf CI users might influence tuning the acoustic parameters in speech production. Based on shreds of evidence, normal hearing results in suitable vocal control through the sensory-motor linkage.

Experimental tracking and numerical mapping of novel coronavirus micro-droplet deposition through nasal inhalation in the human respiratory system.

It is essential to study the viral droplet's uptake in the human respiratory system to better control, prevent, and treat diseases. Micro-droplets can easily pass through ordinary respiratory masks. Therefore, the SARS-COV-2 transmit easily in conversation with a regular mask with 'silent spreaders' in the most physiological way of breathing through the nose, indoor and at rest condition.

SARS-CoV-2 droplet deposition path and its effects on the human upper airway in the oral inhalation.

Background And Objective: It is crucial to study the uptake of viral droplets in the human respiratory system to control, prevent, and treat diseases.

Methods: In this study, a well-verified real anatomical model was used; the passage of air in the human upper respiratory system computed using high-quality Computer Tomography (CT) images. Then, the airflow field, along with the coronavirus micro-droplets injection, was examined in this realistic model using the Fluid-Structure Interaction (FSI) method.

Translation and validation of parental perspective questionnaire for children with cochlear implant in persian language.

Parental views about the outcomes of implantation on the child's quality of life are valuable sources of information for implantation specialists. The aim at this study was to validate the "Parental Perspectives" questionnaire in Persian language. The original questionnaire was translated from English to Persian language; the final Persian version of questionnaire was prepared and evaluated for validity and reliability.

Mitochondria protection as a mechanism underlying the hepatoprotective effects of glycine in cholestatic mice.

Cholestasis is the stoppage of bile flow which could lead to serious clinical complications if not managed. Cytotoxic bile acids are involved in the pathogenesis of liver injury during cholestasis. There are no promising pharmacological interventions against cholestasis and its associated complications.

The frequency of follicle stimulating hormone receptor gene polymorphisms in Iranian infertile men with azoospermia.

Background: Azoospermia is the medical condition of a man not having any measurable level of sperm in his semen. Follicle stimulating hormone (FSH) is a member of the glycoprotein hormone family that plays an important role in human reproduction because of its essential role in normal spermatogenesis. Various Single Nucleotide Polymorphisms (SNPs) have been reported within FSH receptor (FSHR) gene that may affect the receptor function.

Association between polymorphisms in DNA repair genes (XRCC1 and XRCC7) and risk of preeclampsia.

Purpose: Although the exact genes involved in preeclampsia (PE) are still not fully discovered, an important role for oxidative stress in its pathogenesis is accepted. XRCC1 (MIM: 194360) and XRCC7 (MIM: 600899) play a crucial role in the DNA repair pathways. Functional polymorphisms in XRCC1 (Arg194Trp and Arg399Gln) and XRCC7 (G6721T) may be risk factors for PE.