1,070 results match your criteria: "UCL Eastman Dental Institute[Affiliation]"

Periodontitis is a highly prevalent chronic disease. Despite decades of extensive research on the topic, a complete understanding of its immunopathogenesis, especially when linked to other inflammatory comorbidities, is lacking. human and animal experiments have shown the host inflammatory response's crucial role in both the disease's onset and its systemic implications.

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Introduction In the UK, more than 18 million extractions are performed annually. Healing after extraction is often uneventful, but there are rare cases where weeks or months pass and an extraction socket does not heal.Aim The aim of this study is to provide a review of cases in which a non-healing extraction socket is attributed to a serious systemic disease or malignancy, or an adverse consequence of systemic therapy.

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Purpose: To evaluate whether there are clinical benefits by preparing dental implant sites using piezosurgery instead of conventional rotary drills in healed bone crests and if initial crestal soft tissue thickness could have an impact on marginal bone loss.

Methods: Twenty-five partially edentulous patients requiring two single implants in molar/premolar areas had each site randomly allocated to either piezosurgery or to conventional rotary drill preparation according to a split-mouth design. Definitive screw-retained metal-ceramic crowns were delivered after 6 months.

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: Female infertility due to unexpected causes exhibits a great challenge for both clinicians and women who are trying to conceive. The present clinical case series study aimed to evaluate the efficacy of multiple wavelengths of red and near-infrared (NIR) laser photobiomodulation (PBM) for increasing the potential of fertility in women and improving reproductive health in unexplained infertility issues. The objectives were to assess the following: (1) any adverse effects; (2) the possibility of producing an effective PBM protocol; (3) and healthy live birth.

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Introduction: Feedback is an invaluable educational tool and is now widely used in education, despite some of the challenges and barriers to its implementation. Effective feedback in medical and dental education is a driver for improvement, by recognising good performance and identifying areas where improvement is required. This, in turn, can translate into better patient care, as feedback can positively impact on clinical performance.

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Background: Inherited epidermolysis bullosa (EB) comprises a group of genetic disorders characterized by skin fragility and unique oral features. It requires interdisciplinary care from several health professionals, including oral health teams. Modern dentistry encompasses a wide range of therapeutic options performed by specialists from different fields.

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Connective tissue grafts for gingival recession treatment present significant challenges as they require an additional surgical site, leading to increased morbidity, extended operative times, and a more painful postoperative recovery for patients. Gelatin contains the arginine-glycine-aspartic acid (RGD) sequence, which supports cell adhesion and interactions. The development of gelatin hydrogels holds significant promise due to their biocompatibility, ease of customization, and structural resemblance to the extracellular matrix, making them a potential candidate for gingival regeneration.

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This investigation developed new composite bone cements using urethane dimethacrylate (UDMA), poly(propylene glycol) dimethacrylate (PPGDMA), and hydroxyethyl methacrylate (HEMA), with micrometer-sized aluminosilicate glass filler. Monocalcium phosphate monohydrate (MCPM) and hydroxyapatite (HA) particles were added to enhance biological performance, particularly osteo-immunomodulation. Free radical polymerization was triggered by mixing two pastes containing either benzoyl peroxide (BPO, an initiator) or N-tolyglycine glycidyl methacrylate (NTGGMA, an activator).

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A novel 'stop-hole' strategy to extend the fatigue life of orthodontic thermoformed retainers: an in vitro study.

Eur J Orthod

December 2024

Department of Orthodontics, UCL Eastman Dental Institute, University College London, Rockefeller Building, 21 University Street, London WC1E 6DE, United Kingdom.

Objectives: This study aimed to investigate the potential to limit crack propagation in thermoformed retainers (TRs) and extend their fatigue life by placing a 'stop-hole'.

Methods: Thirty-two TRs, fabricated from 1 mm thick, round polyethylene terephthalate glycol (PETG) blanks of ICONIC®, underwent testing within a custom-built fatigue tester. After initial crack growth of 3 mm, the TRs were divided into three groups: a control group (C) and two experimental groups based on the stop-hole placement method.

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The development of dental materials needs to be supported with sound evidence. This in vitro study aimed to measure the fracture toughness of a short fibre-reinforced composite (sFRC), at differing thicknesses. In this study, 2 mm, 3 mm and 4 mm depths of sFRC were prepared.

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A qualitative study of preoperative anxiety in orthognathic patients: The patient perspective.

Am J Orthod Dentofacial Orthop

January 2025

Department of Orthodontics, UCL Eastman Dental Institute, London, United Kingdom; Royal National ENT and Eastman Dental Hospitals, UCLH NHS Foundation Trust, London, United Kingdom.

Introduction: Increased preoperative anxiety may have an adverse impact on the patient experience. This qualitative study therefore aimed to explore those factors affecting anxiety in the approach to orthognathic surgery.

Methods: A total of 28 orthognathic patients who had completed their presurgical orthodontic treatment and were within 8 weeks before their surgery underwent one-to-one in-depth interviews.

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Purpose: The aim of this study was to test a prototype device called occlusal force diagnostic system in relation to occlusal force adaptation following orthognathic surgery.

Methods: Retrospective study of 10 patients scheduled for a bimaxillary osteotomy involving a combination of maxillary Le Fort I impaction procedure coupled with a sagittal split advancement of the mandible; in a 3 years follow-up period.

Results: The selection of examiner is not a variable that affects the occlusal force (N) measured by FSS sensors in any of the experimental conditions tested.

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Adaptive immunity of materials: Implications for tissue healing and regeneration.

Bioact Mater

November 2024

Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 31116, Republic of Korea.

Recent cumulative findings signify the adaptive immunity of materials as a key agenda in tissue healing that can improve regenerative events and outcomes. Modulating immune responses, mainly the recruitment and functions of T and B cells and their further interplay with innate immune cells (e.g.

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Medication-related osteonecrosis of the jaw (MRONJ) is a debilitating adverse effect of bisphosphates, antiresorptive therapy or antiangiogenic agents that can potentially increase oxidative stress, leading to progressive osteonecrosis of the jaws. Despite the large number of published systematic reviews, there is a lack of potential MRONJ treatment protocols utilising photobiomodulation (PBM) as a single or adjunct therapy for preventive or therapeutic oncology or non-oncology cohort. Hence, this systematic review aimed to evaluate PBM laser efficacy and its dosimetry as a monotherapy or combined with the standard treatments for preventive or therapeutic approach in MRONJ management.

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Background: Osteogenesis imperfecta (OI) is a group of inherited connective tissue disorders of varying severity characterized by bone fragility. The primary objective of this international multidisciplinary collaboration initiative was to reach a consensus for a standardized set of clinician and patient-reported outcome measures, as well as associated measuring instruments for dental care of individuals with OI, based on the aspects considered important by both experts and patients. This project is a subsequent to the Key4OI project initiated by the Care4BrittleBones foundation which aims to develop a standard set of outcome measures covering a large domain of factors affecting quality of life for people with OI.

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The survival and clinical performance of anterior composite resin restorations and posterior indirect and cast restorations used to treat generalised tooth wear.

Br Dent J

August 2024

NIHR Academic Clinical Fellow in Prosthodontics, UCL Eastman Dental Institute, UK; Speciality Registrar in Prosthodontics, University College London and Hospital, UK; Associate Clinical Lecturer, UCL Eastman Dental Institute, UK.

Objective To evaluate the survival and clinical performance of restorative materials used in the rehabilitation of generalised severe tooth wear within a UK NHS postgraduate teaching hospital.Methods The clinical performance of 527 restorations on 20 patients with generalised severe tooth wear was reviewed after a mean period of five years. Anterior teeth were restored with direct composite resin and posterior teeth with indirect restorations.

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Causes of Oral Granulomatous Disorders: An Update and Narrative Review of the Literature.

Head Neck Pathol

August 2024

Department of Oral and Maxillofacial Surgery and Diagnostic Sciences, College of Medicine and Dentistry, Riyadh Elm University, Riyadh, Saudi Arabia.

Granulomatous diseases include a diverse range of chronic inflammatory disorders with a wide variety of pathologies and clinical characteristics. In particular, the orofacial region can be affected by granulomatous conditions-whether as an isolated disease or as part of a systemic disorder. Regardless of the nature of the disease or its mechanism of development, precise diagnosis can be challenging, as etiopathogenesis may be driven by several causes.

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Objective: This study aimed to assess the treatment quality factors associated with the risk of radiographic detection of apical periodontitis (AP) in root-filled teeth (RFT) on CBCT images.

Methods: Two hundred eighty-five CBCT scans of patients (range 18-60, mean 35.1) years old were selected from a pool of CBCT scans which were taken from 2016-2022.

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Zinc phosphate glass microspheres promoted mineralization and expression of BMP2 in MC3T3-E1 cells.

J Biomed Mater Res A

December 2024

Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, Royal Free Hospital, London, UK.

Article Synopsis
  • Degradable phosphate glasses have beneficial properties for tissue engineering, allowing control over degradation and ion release through composition changes, especially with the addition of zinc oxide which enhances bone formation.
  • The study focused on creating zinc phosphate glass microspheres in varying sizes (50-150 μm) and compositions (0-10 mol % zinc oxide) and assessing their effects on the osteoblastic cell line MC3T3-E1.
  • Results showed that microspheres with 3-5 mol % zinc oxide significantly increased cell viability and promoted osteogenic differentiation, indicated by higher gene expression of BMP2 and mineralization after 14 days.
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Polydopamine Interfacial Coating for Stable Tumor-on-a-Chip Models: Application for Pancreatic Ductal Adenocarcinoma.

Biomacromolecules

August 2024

Multiscale in Mechanical & Biological Engineering Research Group, Aragon Institute of Engineering Research (I3A), School of Engineering and Architecture, University of Zaragoza, 50018 Zaragoza, Aragon, Spain.

Addressing current challenges in solid tumor research requires advanced in vitro three-dimensional (3D) cellular models that replicate the inherently 3D architecture and microenvironment of tumor tissue, including the extracellular matrix (ECM). However, tumor cells exert mechanical forces that can disrupt the physical integrity of the matrix in long-term 3D culture. Therefore, it is necessary to find the optimal balance between cellular forces and the preservation of matrix integrity.

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Bioactive agents have demonstrated regenerative potential for cell-free bone tissue engineering. Nevertheless, certain challenges persist, including ineffective delivery methods and confined therapeutic potency. Here, we demonstrated that the biomimetic calcium phosphate coating system (BioCaP) could effectively uptake and slowly release the incorporated bioactive agents compared to the surface absorption system via osteoclast-mediated degradation of BioCaP coatings.

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Increased oxidative stress in bone cells is known to negatively alter favorable bone regeneration. This study aimed to develop a porous polycaprolactone (PCL) membrane incorporated with 25 wt % Vitamin C (PCL-Vit C) and compared it to the PCL membrane to control oxidative stress and enhance biomineralization Both membranes were characterized using SEM-EDS, FTIR spectroscopy, and surface hydrophilicity. Vitamin C release was quantified colorimetrically.

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Bacteriocins are antimicrobial peptides that are naturally produced by many bacteria. They hold great potential in the fight against antibiotic resistant bacteria, including ESKAPE pathogens. Engineered live biotherapeutic products (eLBPs) that secrete bacteriocins can be created to deliver targeted bacteriocin production.

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