Digital Commons Network^™

Routine Dental Scaling And Reduced Risk Of Serious Infections In Individuals With Moderate-To-Severe Cerebral Palsy: A Nationwide Population-Based Cohort Study, Li-Wei Ou-Yang, Yu-Tung Huang, Ya-Ting Chang, Hsin-Mao Hsu, Shih-Hao Chang, Chia-Ling Wu, Tsung-Chieh Yao

Journal of Dental Sciences

Background/ purpose: Individuals with moderate-to-severe cerebral palsy (CP) are highly susceptible to serious infections. Oral biofilms may serve as reservoirs for pathogenic microorganisms, yet the impact of professional oral healthcare on systemic infection risk in this population remains unclear. This study investigated the association between routine dental scaling and the risk of serious infections and infection-related mortality among individuals with moderate-to-severe CP.

Materials and methods: This nationwide, population-based cohort study used data from Taiwan’s National Health Insurance Research Database and National Death Registry (2009–2019). Individuals with moderate-to-severe CP were categorized into a routine dental scaling group (≥1 scaling annually for …

Optimizing Light-Curing Protocols For Clear Aligner Attachments: A Comparison Of Bulk-Fill And Conventional Resin Composites, Narudol Treethanya, Nuntinee Nanthavanich Saengfai, Choltacha Harnirattisai, Pongstorn Putongkam, Chia-Tze Kao, Peerapong Santiwong

Journal of Dental Sciences

Background/purpose: The durability of clear aligner attachments is closely related to the polymerization and surface hardness of resin composites, which may be affected by extended light-curing distance during clinical procedures. This study aimed to evaluate the effects of different light-curing times at a 10 mm distance on the surface hardness and polymerization efficiency of conventional and bulk-fill resin composites.

Materials and methods: A total of 120 disk-shaped specimens (5 mm diameter, 2 mm thickness) were fabricated from six resin composites (two conventional and four bulk-fill). Specimens were light-cured for 20, 30, or 40 seconds using a low-intensity LED curing …

Do Anatomy, Physiology And Biochemistry Subject Scores Predict Future Academic Performance? A Longitudinal Analysis Of Undergraduate Dental Students Across All Professional Years., Shahid Akhtar Akhund, Hassan Shaibah

Journal of Dental Sciences

Background/purpose: Basic sciences subjects including anatomy, physiology and biochemistry form the foundation of the Bachelor of Dental Surgery (BDS) programme. However, empirical evidence linking the basic science academic performance to sustained academic achievement across subsequent clinical years remains limited. This is true for low and medium sized economies like Pakistan.

Materials and methods: A retrospective, quantitative, and longitudinal cohort study was conducted.  The deidentified data from a representative dental college was used. Basic science examination scores from the 1^st professional year examination served as predictor variables. The examination scores across 14 subjects served as outcome variables. Pearson product-moment correlations …

Surgical Treatment Of Osteoradionecrosis Of The Jaw Following Radiotherapy For Oropharyngeal Cancer: A Retrospective Clinical Analysis In A Single-Center, Yu Nakai, Ken-Ichiro Sakata, Kazuhito Yoshikawa, Taku Maeda, Tougo Tanabe, Masayuki Shinohara, Kenji Imamachi, Hiroshi Hikasa, Jun Sato, Ikuya Miyamoto

Journal of Dental Sciences

Background/purpose: Osteoradionecrosis of the jaw (ORNJ) is an intractable disease that develops within the radiation field in patients with head and neck cancer. This study aimed to investigate differences in healing rates among surgical treatments for mandibular ORN that developed after radiotherapy for oropharyngeal cancer.

Materials and methods: We retrospectively evaluated 318 patients who underwent radiotherapy or chemoradiotherapy for oropharyngeal cancer at our institution to determine the incidence of ORNJ. Furthermore, 16 patients (15 males and 1 female) with a mean age of 63.3 years were included in the surgical analysis. Healing was defined as the absence of …

Runt-Related Transcription Factor 2 Transcriptionally Represses Sirtuin 1 To Regulate Osteoclastogenesis And Tooth Eruption, Jie Li, Changqing Yan, Xinyi Sun, Chenying Zhang, Xiaozhe Wang, Yang Liu, Shuguo Zheng

Journal of Dental Sciences

Background/purpose: Cleidocranial dysplasia (CCD), caused by Runt-related transcription factor 2 (RUNX2) haploinsufficiency, features delayed tooth eruption. Although impaired osteoclastogenesis contributes to eruption failure, the direct molecular mechanisms linking RUNX2 deficiency to osteoclast dysfunction remain elusive. Sirtuin 1 (SIRT1) is a critical regulator of osteoclastogenesis; however, whether it serves as a downstream effector of RUNX2 remains unexplored. This study aimed to elucidate the mechanistic link between RUNX2 and SIRT1 in regulating osteoclast differentiation and tooth eruption.

Materials and methods: Tooth eruption and osteoclast differentiation were assessed by micro-computed tomography and histological analysis in Runx2^+/- mice. Chromatin immunoprecipitation quantitative polymerase chain …

An Artificial Intelligence Assisted Framework For Automated Quantified Root Canal Curvature Measurement On Periapical Radiographs, Ming-Yi Chen, Shih-Lun Chen, Yu-Jen Chang, Yuan-Jin Lin, Chiung-An Chen, Tsung-Yi Chen, Kuo-Chen Li, Wei-Chen Tu, Patricia Angela R. Abu

Journal of Dental Sciences

Background/purpose: Root canal curvature is a complex anatomical variation that complicates endodontic treatments. Traditionally, dentists rely on two-dimensional periapical radiographs (PA) and manual methods to estimate curvature angles. However, this conventional approach is highly time-consuming and subjective, often leading to inconsistent measurements.

Materials and methods: This study aims to develop a fully automated, objective framework for precise angular measurement and severity grading of root canal curvature. The YOLO26n-seg model was employed to segment roots and classify single- or multi-rooted teeth from PA. Furthermore, we proposed an image processing algorithm that standardized orientation, extracted centerlines, and applied three-point circle fitting …

Submicron Diamond-Assisted Irrigation Enhances Apical Biofilm Removal Under Sonic And Ultrasonic Activation: An Ex Vivo Study, Yung-Szu Hsu, Nai-Chia Teng, Sin-Yu Chen, Huan-Cheng Chang, Haw-Ming Huang, Sung-Chih Hsieh

Journal of Dental Sciences

Background/purpose:

Residual apical biofilm often persists despite sodium hypochlorite (NaOCl) irrigation with sonic or ultrasonic activation. Submicron diamond particles (SMD) have shown promise as a particle-assisted adjunct for root canal cleaning, but their effects on mature intracanal biofilm remain unclear. This study evaluated whether 500-nm SMD particles (10 mg/mL) improve the antibacterial and antibiofilm efficacy of saline or NaOCl irrigation against mature Enterococcus faecalis (E. faecalis) biofilms.

Materials and methods:

One hundred single-rooted human premolars infected with E. faecalis for 21 days were randomly allocated to ten irrigation protocols (n = 10). Antibacterial efficacy was assessed by …

Application Of Medical Imaging Examinations For Temporomandibular Disorders Under Taiwan's National Health Insurance System, Feng-Chou Cheng, Mu-Hsiung Chen, Yu-Ling Wu, Chun-Pin Chiang

Journal of Dental Sciences

No abstract provided.

Digital Impression Workflows And Mucosal Considerations In Removable Complete Dentures, Fu-Chuan Tsai, Hsin-Hua Chou, Takashi Saito, Wei-Chun Lin

Journal of Dental Sciences

No abstract provided.

Radiographic Signs Of Numb Chin Syndrome As An Initial Indicator Of Burkitt Lymphoma: A Case Report, Yu-Hsiang Tang, Meng-Ling Chiang, Jyh-Kwei Chen

Journal of Dental Sciences

No abstract provided.

Corrigendum To "Human Umbilical Cord Mesenchymal Stem Cells Secretome And Nanoemulsion Propolis Combination Ameliorate Osteoclastogenesis In Lipopolysaccharide-Induced Osteolysis In Hyperglycemia Rats"

Journal of Dental Sciences

No abstract provided.

Investigating Policy Enactment In Community Sport Coaching: Directions For Future Research, Ben Ives, Dawn Penney, Jimmy O’Gorman, Adam J. Nichol, Paul Potrac, Lee Nelson

Research outputs 2022 to 2026

This article calls for a sophisticated investigation of policy enactment in sport-related environments, with community sport coaching used as an example case. Emphasis is placed on the need for in-depth empirical research into and theorisation of: 1) political skills involved in the enactment of policy; 2) emotion management when enacting policy; 3) performative and fabricated aspects of policy enactment; and 4) impacts of policy enactment for the health and wellbeing of workers. In doing so, this article challenges scholars to move beyond the study of policy actor types and to develop more nuanced understandings of the political, economic, organisational, interpersonal, …

Stakeholder Perceptions Of The Feasibility Of E-Portfolio-Based Assessment Of Physical Literacy In Primary Health And Physical Education, Jaxon Hogan, Dawn Penney, Eibhlish O’Hara, Joseph Scott

Research outputs 2022 to 2026

Background: Physical literacy (PL) is widely acknowledged as an integral component of high-quality physical education programmes. However, what constitutes appropriate assessment of PL remains a contested issue. This study drew on Whitehead’s conceptualisation of PL as a lifelong journey and investigated how primary school teachers can support students’ PL learning through innovative and engaging assessment methods. The study specifically examined the feasibility of using e-portfolios to facilitate quality PL learning and quality assessment in Physical Education (PE), from different stakeholder perspectives. Methods: This interpretive study employed a qualitative design and methods to investigate aspects of feasibility with three purposive participant …

Gain-Delay Decoupling In Human Stimulus Frequency Otoacoustic Emissions Reveals Constraints On Cochlear Nonlinear Amplification, Yoshita Sharma, Arturo Moleti, Renata Sisto, Teresa Botti, Hansapani Rodrigo, Sri Mishra

School of Mathematical & Statistical Sciences Faculty Publications

Purpose: The nonlinear cochlear amplifier, driven by outer hair cells, underlies the remarkable sensitivity and frequency selectivity of the mammalian auditory system. Stimulus frequency otoacoustic emissions (SFOAEs) provide a noninvasive window into these active cochlear processes, yet the relationship between emission gain and delay across stimulus levels remains incompletely understood. This study examined the level dependence of SFOAEs in normal-hearing human listeners to characterize cochlear nonlinear response properties. We tested how emission gain and delay vary with stimulus level and estimated the frequency of the apical–basal transition associated with the breakdown of the approximate local scaling symmetry.

Methods: SFOAEs were …

Job Satisfaction, Burnout, And Intent To Stay In Neonatal Nursing In England And Wales: A Cross-Sectional Survey Study, Kathy Chant, Yoko Nishimura, Aviva Petrie, Jos M. Latour, Nicola Booth, Kelly Crofts, Lisa Viola, Katie Gallagher

School of Nursing and Midwifery

Objective: To explore job satisfaction, burnout and intent to stay in neonatal nurses in England and Wales. Methods: A cross-sectional online survey study using the McCloskey Mueller Satisfaction Scale (MMSS) to explore job satisfaction, the Copenhagen Burnout Inventory (CBI) to explore burnout and the Nurse Retention Index (NRI) to measure intent to stay. All neonatal nurses working in England and Wales were eligible to take part. Data were collected between February and September 2024. Results: A total of 1590 neonatal nurses completed the survey. Job satisfaction was neutral. Moderate work burnout was reported, with statistically significant differences in mean score …

Investigating The Impact Of Carboxylated Polystyrene Nanoplastics In The Liver Using Cell Lines And Precision-Cut Liver Slices, Namrata Pandey, Paula Boeira, Nathaniel J. Clark, Eleanor T. Walker, Somaiah Aroori, Jemimah Denson, Richard C. Thompson, Matthew E. Cramp, Shilpa Chokshi, Ashwin Dhanda

Peninsula Medical School

Background and Aims: Increasing reports of plastic accumulation in human tissue have raised concerns about potential adverse health outcomes. Evidence of negative effects of nanoplastics is heterogeneous and provides limited insights into the underlying pathogenic toxicity mechanisms in humans. Methods: In the present study, carboxylate-modified fluorescently labelled polystyrene nanoparticles (PS NPs) were used to investigate uptake and cytotoxicity in three different hepatic models of varying complexity, including HepG2 cells, IHH cells, and human precision-cut liver slices (hPCLS). Results: The results show model- and dose-dependent effects on hepatocytes. 74.2% ± 13.4% of the IHH cells showed PS NPs uptake at 0.1 …

Measuring Outcomes In Evaluations Of Interventions To Prevent Youth Crime And Violence: Challenges And Potential Solutions, Sajid Humayun, Finlay Green, Helen Downham, Nick Axford

Peninsula Medical School

There is a clear imperative to prevent youth crime and violence owing to the significant social and economic costs for individuals involved and wider society. A considerable evidence base for ‘what works’ in this space exists but gaps remain. To address these, it is necessary to evaluate intervention effectiveness. The aim of this article is to explore challenges and potential solutions regarding outcome measurement in such evaluations. To do this we draw on the literature and our experience as evaluators. We argue that outcome selection should be informed by a robust theory of change, and that normally this will mean …

Embodying Policy Work: An Exploration Of Contexts, Actions And Meanings Towards New Possibilities For Physical Education Teacher Education (Pete), Victoria Evans, David Aldous, Dawn Penney

Research outputs 2022 to 2026

This theoretical paper presents a heuristic framework that is directed towards transformative thinking and practices in Physical Education Teacher Education (PETE). The research focus and direction, embodying policy work, applies and extends Bernstein’s concepts of the pedagogic and corporeal device to offer new directions for inquiry and explore the considerations these raise for PETE professionals and their practices. The paper affirms the importance of policy work in PETE, while recognising a need for more nuanced and critical understandings of the complex interrelationships between contexts and actions, and the potential meanings generated and ascribed to different forms of policy work and …

Gastronomy Tourism Destinations: Developing A Scale To Measure Tourists’ Perceived Attributes, Ganghua Chen, Jingmei Xu, Songshan (Sam) Huang

Research outputs 2022 to 2026

Purpose: This study emphasizes the growing significance of destination attributes in shaping the experiences and behaviours of gastronomy and culinary tourists. Understanding both core and complementary attributes of a gastronomy tourism destination is crucial for its sustainable development. However, there is a lack of a reliable measurement for tourists’ perceived attributes of gastronomy tourism destinations (PAGTD). Therefore, the purpose of this study is to develop a scale to measure tourists’ PAGTD. Design/methodology/approach: The study systematically followed the scale development and validation process, using three samples (Sample 1, n = 200; Sample 2, n = 204; and Sample 3, n = …

The Hows And Whys Of Gendered Grouping Practices In Primary Physical Education In England, Shaun D. Wilkinson, Annette Stride, Dawn Penney

Research outputs 2022 to 2026

Background: Single- and mixed-sex grouping have long been a focus of attention in physical education (PE) and are matters often at the fore of discussions about curriculum planning, teaching, and learning. Nonetheless, there remains little consensus or guidance on which approach (or combination of approaches) should be preferred in PE in primary and secondary schools in England. Further, while single- and mixed-sex grouping have been extensively researched in PE in secondary schools, hitherto there remains an absence of research examining these practices in PE in primary schools. This research sought to address gaps in the literature to build a stronger …

A Figurational Analysis Of Health And/Or Physical Education Teacher Educators’ Conceptualisations Of Policy, And Their Sociogenesis, Laura Alfrey, Dylan Scanlon, David Aldous, Jenna Lorusso, Kellie Baker, Christopher Clark, Mo Jafar

Research outputs 2022 to 2026

Policy engagement is key to promoting quality physical education yet it has been identified as a ‘grand challenge’ for Health and/or Physical Education (H/PE) internationally. All H/PE professionals, including teacher educators, have a collective responsibility to engage with policy but existing research tells us little about how H/PE teacher educators (H/PETEs) understand and engage with policy. It is important to examine H/PETEs conceptualisations of policy for a few reasons, not least because teacher educators play a crucial role in supporting future generations of teachers who themselves will need to engage with policy as a core feature of their professional lives. …

Aligning The Culi Test With Cefr Illustrative Scales, Sasithorn Limgomolvilas

PASAA

No abstract provided.

Development And Validation Of An Algorithmic Randomization Model For A Cefr-Aligned English Proficiency Test For College Students, Jamjumrat Deeprom

PASAA

No abstract provided.

Heteronormativity And Gender Inequality In Three Esp Textbooks In Thailand : Multimodal Discourse Analysis, Akkasit Kathapant, Kriangkrai Vathanalaoha

PASAA

No abstract provided.

From Formative Policy To Performative Grading Practices : Esl Teachers’ Enactment Of Classroom-Based Assessment In Malaysian Primary Schools, Anwar Farhan Mohamad Marzaini, Shahazwan Mat Yusoff

PASAA

No abstract provided.

The Role Of Translation In Second Language Acquisition : Relevance And Practical Applications In The 21st Century, Benjawan Tipprachaban

PASAA

No abstract provided.

A Contextual And Work-Based Language Practice Instructional Model Development To Enhance English-Speaking Skills For Effective Customer Service Among Thai Vocational Students, Henry Yuh Anchunda, Suparada Anchunda, Wareerat Kaewurai, Pakorn Prachanban, Taweesak Sawangmek

PASAA

No abstract provided.

Beyond Linguistic Accuracy : A Culturally Embedded Framework For Assessing Cross-Cultural Speaking Ability Through Performance And Reflective Inquiry, Chotiwan Yaemkhayai, Ruedeerath Chusanachoti, Theerawat Theerapojjanee

PASAA

No abstract provided.

Association Of Source-Specific Nitrate Intake With Inflammation And Cardiometabolic Health: A Cross-Sectional Study, Carolyn J. English, Catherine P. Bondonno, Liezhou Zhong, Anna Lohning, Nicola P. Bondonno, Dianne P. Reidlinger

Research outputs 2022 to 2026

This study aimed to explore whether health effects of dietary nitrate depend on its source, by investigating associations between plant and animal-sourced dietary nitrate groups with markers of inflammation and CVD risk factors. Among 100 non-smoking adults (mean age 49 ± 13 years, 31% male), dietary nitrate intake was assessed using food frequency questionnaire (n=100) and 3-day food diary (n=89), combined with nitrate food composition databases. Nitrate intake was classified into plant, naturally occurring animal and additive-permitted meat-sourced groups. Associations between source-dependent nitrate intakes and lipoprotein-associated phospholipase A2 (Lp-PLA2), C-reactive protein (CRP), fasting plasma lipids, anthropometry, and blood pressure were …

Beyond The Pandemic: How Covid-19 Highlighted The Need For Cross-Sector Healthcare Solutions For Young Australians Living With Adversity, Ennur Erbasi, Shannon Muir, Karen Mclean

Research outputs 2022 to 2026

We explored the perceived impacts of the COVID-19 pandemic on health and healthcare access among young people living with significant adversity in Victoria, Australia, using a convergent parallel mixed-methods design. Guided by a pragmatism epistemology, fifty-seven purposively sampled Victorian adolescents aged 15–19 years with lived experience of adversity completed a primarily quantitative online survey, and eight also participated in semi-structured interviews. Descriptive quantitative results indicated that a greater proportion of participants rated their mental health as fair or poor during COVID-19 (69%) compared to before the pandemic (40%). Similarly, more participants rated their physical health as fair or poor during …