5,161 results match your criteria: "Seoul National University School of Dentistry & Dental Research Institute[Affiliation]"

Enhancing the Biological Properties of Organic-Inorganic Hybrid Calcium Silicate Cements: An In Vitro Study.

J Funct Biomater

November 2024

Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul 02447, Republic of Korea.

(1) Background: This study aimed to enhance the biological properties of hydraulic calcium silicate cements (HCSCs) by incorporating organic and inorganic components, specifically elastin-like polypeptides (ELPs) and bioactive glass (BAG). We focused on the effects of these composites on the viability, migration, and osteogenic differentiation of human periodontal ligament fibroblasts (hPDLFs). (2) Methods: Proroot MTA was supplemented with 1-5 wt% 63S BAG and 10 wt% ELP.

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Soft tissue paradigm based Treatment planning in skeletal class III.

Clin Oral Investig

November 2024

Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, South Korea.

Objectives: This study aimed to propose guidelines for the indications of non-extraction, extraction camouflage treatment, and orthognathic surgery by comparing the degree of soft tissue improvement effects. This comparison focused on changes in CKHA, a soft tissue indicator corresponding to the major hard tissue indicator, ANB.

Materials And Methods: Sixty-six patients, 25 males and 41 females, aged between 18 and 50 years and diagnosed with skeletal Class III malocclusion (ANB < 0°), were enrolled in the study.

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Antinuclear Positivity and Malignant Transformation Potential of Oral Potentially Malignant Disorder.

Oral Dis

November 2024

Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Korea.

Objective: This multicenter cohort study aimed to investigate the impact of antinuclear antibody (ANA) positivity on the malignant transformation potential of oral potentially malignant disorders (OPMDs) using the Observational Health Sciences and Informatics network tools for the Observational Medical Outcomes Partnership (OMOP) Common Data Model (CDM).

Materials And Methods: Retrospective cohort data from five medical centers were analyzed. Cox regression and 1:4 propensity score matching followed by aggregated meta-analysis were used to evaluate association between ANA positivity and the risk of oral squamous cell carcinoma (OSCC).

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This study identifies senescent osteocytes in the femur and tibia of young rodents and explores their role in bone remodeling. The proximity of osteoclasts to senescent osteocytes was observed, which is a new finding. Cultured osteocytes, sorted using a podoplanin antibody in FACS, exhibited osteocytic characteristics and increased senescence-related genes.

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Objective: To investigate which types of environmental exposure during pregnancy are risk and protective factors for cleft lip with or without cleft palate (CL/P).

Methods: This case-control study included 278 orthodontic patients with CL/P (CL/P group) and 51 without CL/P (non-CL/P group). Demographic and environmental exposure data were collected using questionnaires completed by the parents.

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Background: This study aimed to evaluate the effect of systemically administered anti-sclerostin antibodies (Anti-Scl Ab) on orthodontic tooth movements (OTM) in an ovariectomized rat.

Methods: Twenty-four 12-week-old female Sprague-Dawley rats were randomly divided into two groups: (1) ovariectomy (OVX) group, (2) ovariectomy + romosozumab (ROMO) group. OTM was performed 8 weeks after OVX.

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Article Synopsis
  • * Results showed that a higher PRS was more strongly related to EGFR-positive LUAD cases (OR=8.63) than to EGFR-negative cases (OR=3.50), indicating a significant association based on mutation status.
  • * These findings imply that genetic susceptibility to LUAD differs in never-smoking East Asian women depending on whether the cancer has specific mutations, which could affect public health strategies and clinical practices.*
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COVID-19 vaccine acceptance and 5C psychological antecedents amid the omicron surge in South Korea and China.

Vaccine

January 2025

School of Public Health, Peking University, Beijing, China; Institute for Global Health and Development, Peking University, China; Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, China. Electronic address:

Background: It is crucial to emphasize the necessity of annual COVID-19 vaccination, particularly for vulnerable populations like older and chronically ill individuals.

Objectives: This study aimed to quantify the level of vaccination acceptance and its 5C psychological antecedents in the South Korean and Chinese populations and also to identify the predictors, considering contextual variations that influence vaccine acceptance in both countries.

Methods: A cross-sectional survey study was undertaken in South Korea and China between March 15 and March 30, 2023, coinciding with the emergence of the SARS-CoV-2 Omicron variant in both nations.

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Complete genome sequence of strain CXO-01 isolated from Korean saliva.

Microbiol Resour Announc

December 2024

Department of Dental Anesthesiology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, South Korea.

Article Synopsis
  • The genome of strain CXO-01, isolated from human saliva and kimchi, consists of a single circular chromosome measuring 2,371,631 base pairs.
  • It contains three circular plasmids, which are 20,579 bp, 4,818 bp, and 4,494 bp in size.
  • Gene analysis identified a total of 2,305 genes, with 2,157 of those being coding DNA sequences.
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Inhibitory neuronal circuits within the lateral septum (LS) play a key role in regulating mood and stress responses. Even though glial cells can modulate these circuits, the impact of astrocytes on LS neural circuits and their functional interactions remains largely unexplored. Here, we demonstrate that astrocytes exhibit increased intracellular Ca²⁺ levels in response to aversive sensory and social stimuli in both male and female mice.

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Surface properties and biofilm formation on resins for subtractively and additively manufactured fixed dental prostheses aged in artificial saliva: Effect of material type and surface finishing.

J Prosthet Dent

November 2024

Associate Professor, Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland; Associate Professor, Department of Restorative, Preventive and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland; and Adjunct Professor, Division of Restorative and Prosthetic Dentistry, The Ohio State University, Columbus, Ohio.

Statement Of Problem: Additive manufacturing (AM) and subtractive manufacturing (SM) have been widely used for fabricating resin-based fixed dental prostheses. However, studies on the effects of material type (AM or SM resin) and surface finishing (polishing or glazing) on the surface properties and biofilm formation are lacking.

Purpose: The purpose of this in vitro study was to investigate the effects of material type and surface finishing on the surface roughness, wettability, protein adsorption, and microbial adhesion of the AM and SM resins marketed for fixed restorations under artificial saliva-aged conditions.

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Article Synopsis
  • * Recent advancements in targeted therapy and immune-checkpoint inhibitors are now becoming available for treating unresectable HCC and preventing recurrence after curative procedures.
  • * This clinical practice guideline aims to provide updated recommendations from Asia-Pacific experts on systemic therapy for HCC, addressing key questions about patient selection, effective treatments, and management strategies for immunotherapy.
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Proline is a major substrate in collagen biosynthesis and is required for collagen molecule formations. However, detailed explanations of the molecular basis through which proline functions in collagen biosynthesis have yet to be provided. Thus, genome-wide screening was employed to elucidate these in the pre-osteoblastic MC3T3-E1 and human periodontal ligament fibroblast (hPDLF) cell lines.

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Synergistic coating of Laponite swollen-layer and heparin composite for enhanced antifouling and antithrombotic performance.

Carbohydr Polym

January 2025

Biomaterials Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea; Division of Bio-Medical Science and Technology, KIST school, Korea University of Science and Technology (UST), Seoul, 02792, Republic of Korea. Electronic address:

When implantable medical devices come into contact with blood, acute thrombosis and inflammation often occur due to the adhesion and denaturation of plasma proteins, ultimately degrading device performance. To address this issue, we developed a gel-like coating with superhydrophilic properties, incorporating a heparin based outer layer designed to minimize foreign body reactions and enhance hemocompatibility. The coating was engineered using a layer-by-layer (LbL) assembly of poly-l-lysine (PLL), laponite (Lap), and heparin (Hep), utilizing electrostatic interactions.

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Development of a survey-based stacked ensemble predictive model for autonomy preferences in patients with periodontal disease.

J Dent

January 2025

Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Korea; Innovation Research and Support Center for Dental Science, Yonsei University Dental Hospital, Seoul, Korea. Electronic address:

Objectives: This study aimed to develop a model to predict the autonomy preference (AP) and satisfaction after tooth extraction (STE) in patients with periodontal disease. Understanding of individual AP and STE is essential for improving patient satisfaction and promoting informed decision-making in periodontics.

Methods: A stacked ensemble machine learning model was used to predict patient AP and STE based on the results of a survey that included demographic information, oral health status, AP index, and STE.

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Explainable Deep Learning Approaches for Risk Screening of Periodontitis.

J Dent Res

January 2025

Department of Oral and Maxillofacial Surgery, School of Medicine, Ewha Womans University, Seoul, South Korea.

Several pieces of evidence have been reported regarding the association between periodontitis and systemic diseases. Despite the emphasized significance of prevention and early diagnosis of periodontitis, there is still a lack of a clinical tool for early screening of this condition. Therefore, this study aims to use explainable artificial intelligence (XAI) technology to facilitate early screening of periodontitis.

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Neuroplasticity therapy using glia-like cells derived from human mesenchymal stem cells for the recovery of cerebral infarction sequelae.

Mol Ther

November 2024

Laboratory of Stem Cell & Neurobiology, Department of Oral Anatomy and Dental Research Institute, Seoul National University School of Dentistry, Seoul 03080, Republic of Korea; Interdisciplinary Program in Neuroscience, Seoul National University College of Natural Sciences, Seoul 08826, Republic of Korea; Neuroscience Research Institute, Seoul National University, Seoul 03080, Republic of Korea. Electronic address:

Article Synopsis
  • This study explores using human mesenchymal stem cells (hMSCs) transformed into glia-like cells (ghMSCs) to improve recovery after ischemic strokes, which cause brain damage.
  • Transcriptome analysis shows that ghMSCs behave like astrocytes and demonstrate better protective and regenerative qualities against brain injury than regular hMSCs.
  • In rat models, transplanting ghMSCs improved behavioral function and reduced brain damage, with their effectiveness linked to CXCR2 signaling, suggesting a potential therapy for stroke recovery by promoting neuroplasticity.
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Collagen membranes play a crucial role in guided bone regeneration (GBR) by preventing soft tissue infiltration and maintaining space for bone formation. This study investigated the impact of collagen membrane flexibility on GBR outcomes through in vitro and in vivo analyses. Flexible (0.

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Mechanisms Underlying Medication-Related Osteonecrosis of the Jaw.

Oral Dis

November 2024

Department of Oral Histology and Developmental Biology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea.

Objective: Medication-related osteonecrosis of the jaw (MRONJ) is a rare but debilitating disease characterized by a progressive necrosis of jaw bones in patients who have received anti-resorptive or anti-angiogenic therapies. Unfortunately, we still have no validated preventive or pharmaceutical interventions to help these patients, primarily due to our limited understanding of MRONJ pathogenesis. Here, we offer an extensive review of recent studies relevant to MRONJ pathogenesis.

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Article Synopsis
  • Ischemia and reperfusion (IR) lead to oxidative stress and excitotoxicity, major factors in neuronal death in the brain, and hyperthermia worsens this damage.
  • A study conducted on gerbils showed that hyperthermic conditions resulted in earlier neuronal death after IR injury compared to normothermic conditions, with significant increases in oxidative stress markers.
  • The research indicated that hyperthermia amplifies neuronal damage in the hippocampal CA1 region by enhancing oxidative stress and excitotoxicity, as evidenced by changes in various protein levels and cell responses.
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Objectives: This study investigates the association between toothbrushing frequency and self-rated oral health to evaluate the effectiveness of the 3-3-3 toothbrushing campaign.

Methods: Employing a cross-sectional study design, we analysed responses from 13,199 adults using structured questionnaires. The dependent variable was self-rated oral health.

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Understanding the detailed mechanisms driving fibroblast migration within native tissue settings during pathophysiological events presents a critical research challenge. In this study, we elucidate how stromal cells migrate and contribute to the development of three-dimensional (3D) cellular aggregates within confined microcavities. Integrin α5β1 and β-catenin (β-cat) are central in guiding this collective migration and achieving optimal filling of the microcavity.

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Article Synopsis
  • Gastric cancer is a major global health issue, and the effectiveness of immune checkpoint blockade therapies in treating metastatic gastric cancer is limited, underscoring the need for better predictive biomarkers for treatment outcomes.
  • In a multi-omics study analyzing tumor samples from patients treated with nivolumab, researchers found that ICB-sensitive tumors had strong interferon responses, while resistant tumors showed signs of epithelial-mesenchymal transition.
  • The study identified DCN as an important marker related to cancer-associated fibroblasts, linking high DCN expression with ICB resistance and poor patient prognosis, highlighting the importance of the tumor microenvironment in cancer therapy outcomes.*
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Enhanced Antitumor Efficacy of Oncolytic Vaccinia Virus Therapy Through Keratin-Mediated Delivery in Triple-Negative Breast Cancer.

Int J Mol Sci

October 2024

Department of Veterinary Clinical Pathology, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea.

Triple-negative breast cancer (TNBC) represents an aggressive subtype characterized by high rates of recurrence and metastasis, necessitating the exploration of alternative treatment strategies. Oncolytic vaccinia virus (OVV) therapy has emerged as a promising approach, selectively infecting and destroying tumor cells. However, its efficacy is often hampered by inadequate viral distribution within the tumor microenvironment.

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Research of Optical Properties and Biocompatibility in Different Zones of Multilayered Translucent Zirconia on Hydrothermal Aging.

Materials (Basel)

October 2024

Department of Prosthodontics, College of Dentistry, Dankook University, 119 Dandae-ro, Cheonan 31116, Republic of Korea.

Objective: We assessed the changes in optical properties and biocompatibility of transition zones in multilayered translucent monolithic zirconia exposed to prolonged hydrothermal aging and compared the results to those with different yttrium oxide contents.

Materials And Methods: Four types of zirconia blocks from IPS e.max ZirCAD were used: 3Y-TZP e.

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