Efficacy of Cetylpyridinium Chloride Mouthwash on Denture Plaque Reduction and Microbiome Alteration in a Randomized Crossover Trial.

Purpose This study aimed to evaluate the effectiveness of cetylpyridinium chloride (CPC) mouthwash in reducing denture plaque and its impact on the microbial composition of denture plaque. Materials and methods A randomized, placebo-controlled crossover trial included 29 participants with maxillary complete dentures. Participants used either CPC or a placebo mouthwash for one week each in a crossover design.

Bidirectional longitudinal associations between subjective oral health and subjective well-being.

Objective: This study investigated the bidirectional longitudinal association between subjective oral health (SOH) and subjective well-being (SWB) over time.

Methods: This cohort study was based on a four-wave surveys conducted by the English Longitudinal Study of Aging. SOH was measured by oral impacts on daily performance (OIDP), self-rated oral health (SROH), and SWB was measured by the Center for Epidemiologic Studies-Depression (CES-D) scale, Control, Autonomy, Self-Realization, and Pleasure (CASP-19), and satisfaction with life scale (SWLS).

Solitary median maxillary central incisor syndrome caused by 22q11.2 microdeletion.

Solitary median maxillary central incisor (SMMCI) syndrome, the mildest form of the holoprosencephaly spectrum, is a rare anomaly characterized by the presence of a single midline central incisor in both the deciduous and permanent dentitions. Affected individuals can present with additional midline defects beyond dental findings. The 22q11.

Factors Associated With Nutritional Status in Patients With Removable Dentures: A Cross-Sectional Study.

Background Tooth loss can impair masticatory function and may subsequently result in malnutrition. This study aimed to investigate the factors associated with controlling nutritional status (CONUT) scores, which assess malnutrition risk, in patients with removable dentures. Materials and methods In this cross-sectional study, data were obtained from a consecutive sampling of 192 patients (mean age 72.

Correlates of COVID-19 conspiracy theory beliefs in Japan: A cross-sectional study of 28,175 residents.

Background: The COVID-19 pandemic was associated with an increase in conspiracy theories worldwide. However, in Japan, the prevalence of COVID-19 conspiracy beliefs has remained unclear. This study aimed to estimate the prevalence and correlates of COVID-19 conspiracy beliefs using a survey of 28,175 residents of Japan aged 16-81 years old.

Association between equivalized annual household income and regular medical visits for hypertensive patients since the COVID-19 outbreak.

Previous studies have shown an increase in blood pressure during the coronavirus disease 2019 (COVID-19) pandemic even among patients receiving antihypertensive treatment. This study aims to evaluate the association between equivalized annual household income and refraining from regular medical visits for hypertensive patients since the COVID-19 outbreak. We analyzed data from the Japan COVID-19 and Society Internet Survey (JACSIS), including 2832 hypertensive patients aged 20-79 years from the 2020 survey and at least one survey between 2021 and 2023.

Artificial Intelligence in Dentistry: A Descriptive Review.

Artificial intelligence (AI) is an area of computer science that focuses on designing machines or systems that can perform operations that would typically need human intelligence. AI is a rapidly developing technology that has grabbed the interest of researchers from all across the globe in the healthcare industry. Advancements in machine learning and data analysis have revolutionized oral health diagnosis, treatment, and management, making it a transformative force in healthcare, particularly in dentistry.

Usefulness of Generative Artificial Intelligence (AI) Tools in Pediatric Dentistry.

: Generative artificial intelligence (AI) such as ChatGPT has developed rapidly in recent years, and in the medical field, its usefulness for diagnostic assistance has been reported. However, there are few reports of AI use in dental fields. : We created 20 questions that we had encountered in clinical pediatric dentistry, and collected the responses to these questions from three types of generative AI.

Periodontal Care Is Associated With a Lower Risk of Dialysis Initiation in Middle-Aged Patients With Type 2 Diabetes Mellitus: A 6-Year Follow-Up Cohort Study Based on a Nationwide Healthcare Database.

Objective: To investigate the association between dental attendance with periodontal care and the risk of dialysis initiation in patients with type 2 diabetes mellitus (T2D).

Methods: This retrospective cohort study used data from the Japan Medical Data Center (JMDC) claims database (January 2015 to August 2022). Patients with T2D, aged 40-74, were included.

Masticatory performance indicates the development of psychological frailty: A 6-year prospective cohort study by the SONIC study group.

Purpose: Although the association between oral health and physical frailty is well established, psychological frailty has not been investigated. Therefore, this prospective cohort study was conducted to examine the association between masticatory performance and psychological frailty in older community-dwelling Japanese individuals.

Methods: The participants included 498 older adults who completed baseline and 3- and 6-year follow-up surveys.

Association between decreased occlusal support and diabetes mellitus diagnosed by the oral glucose tolerance test with and without periodontal disease: The Suita Study.

Purpose: Several studies have reported a close association between periodontal disease (PD) and diabetes mellitus (DM). In addition, the decline in masticatory function due to decreased occlusal support may worsen DM due to poor nutritional intake. We aimed to elucidate the relationship between PD, decreased occlusal support, and DM.

Nanostructural Analysis of Age-Related Changes Affecting Human Dentin.

Human dentin performs its function throughout life, even though it is not remodeled like bone. Therefore, dentin must have extreme durability against daily repetitive loading. Elucidating its durability requires a comprehensive understanding of its shape, structure, and anisotropy at various levels of its structure.

Ultrasound irradiation in the presence of microbubbles may enhance the antitumor effect of chemotherapeutic agents against bladder cancer.

Intravesical instillation of chemotherapy has been performed to reduce the risk of intravesical recurrence of bladder cancer. However, its antitumor effect is not necessarily sufficient, which may be partially due to inadequate delivery of intravesically administered chemotherapeutic agents to bladder tumors. Ultrasound irradiation to target tissues in the presence of microbubbles is a technique to transiently enhance cell membrane permeability and achieve efficient drug delivery to the desired sites without damage to non-target areas; this technique has been used in chemotherapy, immunotherapy, gene therapy, and radiotherapy for the treatment of various cancers.

Current perspectives on the dynamic culture of mesenchymal stromal/stem cell spheroids.

Mesenchymal stromal/stem cells (MSCs) are promising candidates for regenerative medicine owing to their self-renewal properties, multilineage differentiation, immunomodulatory effects, and angiogenic potential. MSC spheroids fabricated by 3D culture have recently shown enhanced therapeutic potential. MSC spheroids create a specialized niche with tight cell-cell and cell-extracellular matrix interactions, optimizing their cellular function by mimicking the in vivo environment.

Tooth loss-associated neuroplasticity of mastication-related motor cortical neurons.

Objectives: The cerebral cortex contains neurons that play a pivotal role in controlling rhythmic masticatory jaw movements. However, the population characteristics of individual cortical neuronal activity during mastication and the impact of tooth loss on these characteristics remain unclear. Thus, in this study, we aimed to determine the activity patterns of mastication-related motor cortical neurons elicited during mastication and examine the effects of tooth extraction on neuronal activity using two-photon Ca imaging in head-restrained awake mice.

Quality of Life and Oral Function in Patients With Jaw Defects Following Oral Tumour Surgery.

Objectives: To evaluate various oral functions in patients with jaw defects after oral tumour surgery and to clarify factors associated with their quality of life (QoL).

Background: In patients with jaw defects, oral function and QoL are severely impaired. No studies have evaluated oral functions of patients with jaw defects and examined their relationships with QoL.

Cyclosporine A Causes Gingival Overgrowth by Promoting Entry into the S Phase at the G1/S Cell Cycle Checkpoint in Gingival Fibroblasts Exposed to Lipopolysaccharide.

Objectives: Cyclosporine A promotes gingival fibrosis by enhancing the proliferation of gingival fibroblasts, leading to gingival overgrowth. The population of gingival fibroblasts is regulated by cell cycle machinery, which balances cell growth and inhibition. Cells that detect DNA damage pause at the G1/S checkpoint to repair the damage instead of progressing to the S phase.

Impact of COVID-19 pandemic on pneumonia trends in Japan: Insights from diagnosis procedure combination data.

This study analyzed changes in pneumonia hospitalizations in Japan before and after the COVID-19 pandemic using Diagnosis Procedure Combination data. The proportion of inpatients with non-aspiration pneumonia (non-AP) decreased by 48.8%, whereas that of inpatients with aspiration pneumonia (AP) decreased by only 8.

School-Based Fluoride Mouth-Rinse Programs and Dental Caries Treatment Expenditure: An Ecological Study of the NDB Open Data Japan.

Objectives: The prevalence of dental caries is high in Japan, leading to a huge burden of overall expenditure on dental caries treatment for the population. School-based fluoride mouth-rinse (S-FMR) has been implemented as a public health intervention. However, its cost-effectiveness remains unclear, where universal health insurance covers a broad range of dental treatments at relatively low cost.

Japanese clinical practice guidelines for oral cancer, 2023.

The Japanese Society of Oral Oncology and Japanese Society of Oral and Maxillofacial Surgeons have jointly developed clinical practice guidelines for oral cancer (oral squamous cell carcinoma) to improve and standardize the quality of oral cancer treatment in Japan. The first, second, and third editions were published in 2009, 2013, and 2019, respectively, and the 2023 edition was recently developed. In the development of the 2023 edition, 60 clinical questions (CQs) were listed.

Inflammasome regulation by the cell surface ecto-5'-nucleotidase of the oral commensal, Streptococcus oralis.

Streptococcus oralis is a commensal oral bacterium that acts as an opportunistic pathogen, causing systemic diseases, such as infective endocarditis and aspiration pneumonia. However, the specific molecular mechanisms underlying its transition from commensal to pathogenic state remain unclear. In this study, to further elucidate the mechanisms underlying virulence expression, we identified and characterized the cell surface-associated ecto-5'-nucleotidase (Nt5e) in S.