Influence of heat-assisted vat photopolymerization on the physical and mechanical characteristics of dental 3D printing resins.

The effects of heat-assisted vat photopolymerization (HVPP) on the physical and mechanical properties of 3D-printed dental resins, including the morphometric stability of 3D-printed crowns, were investigated. A resin tank was designed to maintain the resin at 30, 40, and 50 ℃ during the 3D printing process. Test specimens were fabricated using a commercial dental resin, with untreated resin serving as the control group.

Evaluation of a context-aware chatbot using retrieval-augmented generation for answering clinical questions on medication-related osteonecrosis of the jaw.

The potential of large language models (LLMs) in medical applications is significant, and Retrieval-augmented generation (RAG) can address the weaknesses of these models in terms of data transparency and scientific accuracy by incorporating current scientific knowledge into responses. In this study, RAG and GPT-4 by OpenAI were applied to develop GuideGPT, a context aware chatbot integrated with a knowledge database from 449 scientific publications designed to provide answers on the prevention, diagnosis, and treatment of medication-related osteonecrosis of the jaw (MRONJ). A comparison was made with a generic LLM ("PureGPT") across 30 MRONJ-related questions.

Assessing Caries Removal Efficacy and Pain Perception in Children, Using Smart Bur Versus Carbide Bur: A Randomized Clinical Study.

BACKGROUND Dental caries removal is conventionally done using carbide burs, but non-metallic polymer burs have recently been developed with the aim of being more selective and causing less pain. The objective of the study is to evaluate and compare the effectiveness of caries removal, time taken, and patient compliance during restorations using smart bur and carbide burs in pediatric patients. MATERIAL AND METHODS A clinical study was designed and conducted at the Pedodontics Outpatient Department, with a focus on 40 children between 6 and 12 years old, who were split into 2 groups consisting of 20 children each: group 1, using a carbide conventional rotary bur, and group 2, using a smart bur.

Metabolic Dysfunction-Associated Steatotic Liver Disease and the Risk of Chronic Periodontitis: A Nationwide Cohort Study.

Chronic periodontitis (CP) and metabolic dysfunction-associated steatotic liver disease (MASLD) have emerged as interconnected conditions with shared mechanisms, such as systemic inflammation and metabolic dysregulation. However, the risk of CP in the newly classified subgroups of steatotic liver disease (SLD), including MASLD and metabolic alcohol-associated liver disease (MetALD), has not been extensively studied. This study investigated the association between SLD subtypes and the incidence of CP in a nationwide cohort.

Immune Checkpoint Inhibitor-Associated Cutaneous Adverse Events: Mechanisms of Occurrence.

Immunotherapy, particularly that based on blocking checkpoint proteins in many tumors, including melanoma, Merkel cell carcinoma, non-small cell lung cancer (NSCLC), triple-negative breast (TNB cancer), renal cancer, and gastrointestinal and endometrial neoplasms, is a therapeutic alternative to chemotherapy. Immune checkpoint inhibitor (ICI)-based therapies have the potential to target different pathways leading to the destruction of cancer cells. Although ICIs are an effective treatment strategy for patients with highly immune-infiltrated cancers, the development of different adverse effects including cutaneous adverse effects during and after the treatment with ICIs is common.

Exploring Quantitative MRI Biomarkers of Head and Neck Post-Radiation Lymphedema and Fibrosis: Post Hoc Analysis of a Prospective Trial.

Background: Quantifying head and neck lymphedema and fibrosis (HN-LEF) is crucial in the investigation and management of treatment sequelae in head and neck cancer (HNC).

Methods: The T1- and T2-weighted MRI signal intensity (SI) was examined in relation to HN-LEF categories per physical/tactile examination (No-LEF, A-B = edema, C = edema + fibrosis, D = fibrosis), and MRI structural volumes were examined in relation to a novel 10-point HN-LEF score in the intraoral and submental regions.

Results: We identified differences in ranks among HN-LEF categories in relation to the MRI SI (A-B and C are higher than D and No-LEF for T2 SI, and A-B is the highest for T1).

17β-estradiol promotes osteogenic differentiation of BMSCs by regulating mitophagy through ARC.

The study aims to elucidate the mechanism through which 17β-estradiol facilitates osteogenic differentiation in bone marrow mesenchymal stem cells (BMSCs). In our study, lentiviral transfection was employed to establish apoptosis repressor with caspase recruitment domain (ARC) knockdown or overexpression in BMSCs. The impact of 17β-estradiol on ARC expression was assessed using western blot, RT-PCR and immunofluorescence.

Saudi dental postgraduate education (2013-2023): demographic shifts and potential employment challenges.

Background: Dentistry is essential for oral health, focusing on the diagnosis, prevention, and treatment of oral diseases. In recent decades, Saudi Arabia has expanded its dental education system, adding new dental schools and postgraduate programs to meet the growing demand for professionals. This study provided a detailed analysis of the trends and demographic characteristics of dental postgraduate programs in Saudi Arabia between 2013 and 2023.

Osteoarthritis-like changes in rat temporomandibular joint induced by unilateral anterior large overjet treatment.

Temporomandibular joint osteoarthritis (TMJOA) is a common degenerative disease that causes chronic pain and joint dysfunction. However, the current understanding of TMJOA pathogenesis is limited and necessitates further research. Animal models are crucial for investigating TMJOA due to the scarcity of clinical samples.

Guidance on biomaterials for periodontal tissue regeneration: Fabrication methods, materials and biological considerations.

Regeneration of the multiple tissues and interfaces in the periodontal complex necessitates multidisciplinary evaluation to establish structure/function relationships. This article, an initiative of the Academy of Dental Materials, provides guidance for performing chemical, structural, and mechanical characterization of materials for periodontal tissue regeneration, and outlines important recommendations on methods of testing bioactivity, biocompatibility, and antimicrobial properties of biomaterials/scaffolds for periodontal tissue engineering. First, we briefly summarize periodontal tissue engineering fabrication methods.

Sex-Based Differences in Ruptured Abdominal Aortic Aneurysm Management and Outcomes: An Update.

Objectives: This study aimed to evaluate sex-based differences in outcomes following ruptured abdominal aortic aneurysm (AAA) repair, focusing on mortality, morbidity, and postoperative complications.

Design: Retrospective cohort study SETTING: Multi-institutional data from the Vascular Quality Initiative national database, covering a period from January 2003 to December 2022.

Participants: We included 7,548 patients undergoing open or endovascular repair for ruptured AAA: 5,829 men (77.

Broad-based targeted lipidomic analysis of dental fluorosis population in an adult population.

Dental fluorosis, as a common chronic fluoride toxicity oral disease, is mainly caused by long-term excessive intake of fluoride, which seriously affects the aesthetics and function of patients' teeth. In recent years, with the rapid development of metabolomics technology, lipidomics, as an important means to study the changes in lipid metabolism in organisms, has shown great potential in revealing the mechanisms of disease development. As a major component of cell membranes and a signaling molecule, metabolic disorders of lipids are closely related to a variety of diseases, but the specific mechanism of action in dental fluorosis is still unclear.

Microplastic pollution in the marine environment: Distribution factors and mitigation strategies in different oceans.

As the COVID-19 pandemic began in 2020, plastic usage spiked, and microplastic (MP) generation has increased dramatically. It is documented that MP can transfer from the source to the ocean environment where they accumulate as the destination. Therefore, it is essential to understand their transferring pathways and effective environmental factors to determine the distribution of MPs in the marine environment.

The Effectiveness and Safety of Beta Antagonists in Patients With Burns: An Updated Meta-Analysis.

Aims: The purpose of this systematic review was to assess the safety and effectiveness of beta antagonists for improving clinical care in burn patients, compared to placebo.

Methods: Articles from randomized-controlled trials were identified by a literature search on PubMed and Cochrane. We included relevant trials involving patients with burn.

Current understanding of the etiology, diagnosis, treatment, and management of peri-implant diseases: a narrative review for the consensus report of the Korean Academy of Periodontology.

Over the past few decades, dental implants have been successfully utilized to replace teeth lost due to periodontal disease and other conditions. However, similar to natural teeth, dental implants are vulnerable to inflammatory peri-implant diseases, which can compromise their long-term viability. This review aims to summarize the current understanding of peri-implant diseases and discuss effective strategies for their diagnosis, treatment, and long-term management.

Impact of Platelet-rich Plasma and Platelet-rich Fibrin in Mandibular Third Molar Extraction: A Systematic Review.

Aim: This study aims to evaluate the impact of platelet-rich fibrin (PRF) and platelet-rich plasma (PRP) on pain, swelling, trismus, soft tissue healing and bone regeneration following mandibular third molar extraction.

Material And Methods: A systematic review was conducted from a period of January 2014 to June 2024 using PRISMA guidelines. The search strategy included databases such as Scopus, PubMed, Google Scholar, and Cochrane Central Register of Controlled Trials, using key terms related to "PRF", "PRP", oral surgery, and third molars.

Lactams Exhibit Potent Antifungal Activity Against Monospecies and Multispecies Interkingdom Biofilms on a Novel Hydrogel Skin Model.

Infections of intact and damaged skin barriers and keratin are frequently associated with complex biofilm communities containing bacteria and fungi, yet there are limited options for successful management. This study intended to focus on the utility of some novel proprietary lactam molecules, quorum sensing (QS)-derived halogenated furanones, which act to block the QS pathway, against key fungal pathogens of the skin (Candida albicans, Malassezia furfur and Microsporum gypseum). Moreover, we aimed to assess how these actives performed against complex interkingdom biofilms in a clinically relevant model.

The time has come for revising the rules of clozapine blood monitoring in Europe. A joint expert statement from the European Clozapine Task Force.

The European Clozapine Task Force is a group of psychiatrists and pharmacologists practicing in 18 countries under European Medicines Agency (EMA) regulation, who are deeply concerned about the underuse of clozapine in European countries. Although clozapine is the most effective antipsychotic for people with treatment-resistant schizophrenia, a large proportion of them do not have access to this treatment. Concerns about clozapine-induced agranulocytosis and stringent blood monitoring rules are major barriers to clozapine prescribing and use.

Performance evaluation of a machine learning-based methodology using dynamical features to detect nonwear intervals in actigraphy data in a free-living setting.

Goal And Aims: One challenge using wearable sensors is nonwear time. Without a nonwear (e.g.

Evaluation of Noise in Paediatric Dentistry and Change in Perception of Operators with Use of Ear Protection Devices.

Background: Noise sources in paediatric dental offices include machinery and children's cries and screams. Although the presence of occupational noise-induced hearing loss (ONIHL) among dental operators is established, preventive measures such as ear protection devices (EPDs) are not frequently employed as prophylactic intervention. The primary aim of this study was to quantitatively assess the noise levels in paediatric dental clinics and to qualitatively evaluate the operators' perception of noise with and without the use of EPDs.

Impact of Metabolic Dysfunction-Associated Fatty Liver Disease on the Prognosis of Patients With Hepatocellular Carcinoma After Radical Resection: A Retrospective Study.

Introduction Although metabolic dysfunction-associated fatty liver disease (MAFLD) is becoming more common in individuals with hepatocellular carcinoma (HCC), it is still unknown how this condition relates to postoperative complications of HCC. While hepatitis B/C virus (HBV/HCV) infection and alcohol use are primary risk factors, MAFLD has emerged as a significant contributor to HCC incidence. Understanding the prognostic impact of MAFLD on HCC outcomes, particularly post-radical resection, is essential.

Impact of the COVID-19 Pandemic on the Use of Quaternary Ammonium Compound Disinfectants in Healthcare Facilities Within Selected States in the United States of America.

Introduction Quaternary ammonium compounds (QACs) are the active ingredient in the majority of disinfectants approved for use against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative agent of the coronavirus disease 2019 (COVID-19). Although widely used, they have been linked to infertility and birth defects in animals, and have been shown to increase proinflammatory cytokines, decrease mitochondrial function, and disrupt sterol biosynthetic pathways in a dose-dependent manner in humans. This study examined if there was an increased use of QAC-based disinfectants among healthcare settings in response to the COVID-19 pandemic and aims to bring to light the negative health outcomes that this rise in QAC exposure may pose.