Canadian Journal of Dental Hygiene (CJDH)

Background: Dental plaque is a common issue that can be effectively managed with proper oral hygiene practices and regular oral health care. The aim of this crossover study was to assess dental plaque using different methods (digital and clinical plaque scores) and evaluate the effectiveness of toothbrushing with a triple-headed manual toothbrush compared to a single-headed manual toothbrush in removing dental plaque. Methods: Plaque staining was performed to assess dental plaque amounts before and after brushing with the triple-headed (test) and single-headed (control) manual toothbrush in 21 study participants after plaque was allowed to accumulate for 48 hours. Dental plaque was scored both clinically as well as digitally. Results: Toothbrushing with a manual single-headed toothbrush and a triple-headed toothbrush was found to be equally effective when comparing plaque removal ability. Brushing time was shorter when using a triple-headed toothbrush, compared to a single-headed toothbrush. Conclusion: The triple-headed manual toothbrush may be a good alternative to the single-headed manual toothbrush for certain patient groups.

Background: Presently, dental hygiene education is primarily divided into classroom lectures, simulation labs, and clinical experiences. Although the recent surge of curriculum renovation in dental and medical schools centres around enhancing student engagement and active learning, classroom teaching remains teacherfocussed, involving students mainly as passive learners. H5P is an open platform for creating and sharing interactive HTML5 learning content. A large set of H5P content was created and provided to students through the learning management system as supplementary material for an oral biology course in the dental hygiene program at a Canadian university. This study was conducted to evaluate the impact of this interactive H5P content on the students’ learning experiences. Methods: The third-year dental hygiene students enrolled in the oral biology course were invited to participate in the study. Anonymised student performance data from the summative exam were analysed, and a survey regarding the student experience with the supplementary H5P content was administered. Results: Students performed better on questions for which H5P supplements were provided. The results from the survey showed satisfaction and perceived benefit of using H5P as supplementary content in didactic lectures. Discussion: The H5P content allowed students to apply knowledge and reproduce understanding, promoting active learning in the didactic oral biology course. Students appreciated the content’s interactive nature and expressed willingness to have similar experiences in other courses. Conclusion: Using H5P, interactive learning content can promote self-directed and personalized learning. This open learning platform has the potential to redefine didactic teaching by fostering an active learning environment.

Objective: Oral lichen planus (OLP) is an immune-mediated condition featuring chronic inflammation. The World Health Organization classifies OLP as potentially malignant, but it is believed that the malignant transformation of OLP occurs in lesions with both lichenoid and dysplastic features (LD). This review discusses the issues surrounding OLP and LD, including their malignancy, classification, and categorization, and whether lichenoid inflammation causes dysplastic changes in LD or vice versa. Methods: English full-text literature on OLP, LD and/ or dysplasia was retrieved from PubMed, CINAHL, and Google Scholar. Results: Thirty-six publications including original research articles, reviews, meta-analyses, books, reports, letters, and editorials were selected for review. Discussion: Research suggests that OLP has malignant potential, although small, and that LD should not be disregarded, as dysplasia presenting with or without lichenoid features may develop into cancer. There is also disagreement over the classification and categorization of LD. Different terms have been used to classify these lesions, including lichenoid dysplasia, OLP with dysplasia, and dysplasia with lichenoid features. Moreover, in LD, it is not clear if dysplasia or lichenoid infiltration appears first, and if inflammation is a response to dysplasia or if dysplasia is a response to the persistent inflammation. The main limitation in the literature is the inconsistency and subjective nature of histological diagnoses, which can lead to interobserver and intraobserver variation, ultimately resulting in the inaccurate diagnosis of OLP and LD. Conclusion: Although further research is required to understand OLP and LD, both lesions should be considered potentially malignant and should not be disregarded.

Objective: Despite the vast knowledge gained through research and public health surveillance, dental caries prevalence among children from low-income households remains high. The aim of this literature review is to identify assumptions made within existing empirical, constructivist, and critical paradigms to determine how those assumptions impact knowledge and if these impacts have aided in perpetuating inequity or health disparities within this target population. Method: A literature search of EBSCOhost, PubMed, and Web of Science was conducted to retrieve articles from peer-reviewed journals published in the last 10 years, including qualitative, quantitative, and mixed methods studies. Qualitative methods included narrative research via interviews; quantitative designs included cross-sectional studies using surveys and various indices to assess oral health literacy (OHL) levels and oral health status. Exclusion criteria were non-English studies and studies that did not include female caregivers. Results: Nine primary research articles were selected for analysis. The positivist paradigm was dominant in 7 of 9 articles. Oral health social processes, such as the lack of value placed on oral health as a component of overall health by the broader medical community and the public, were not discussed as influencing factors on OHL. Discussion: Assumptions identified within the dominant paradigms were determined to perpetuate inequity or health disparities, confirming a link between caregivers’ OHL levels and the oral health status of their children. It is critical that all health care professionals improve their understanding of factors affecting caregivers’ OHL. Conclusion: Strategies that empower and advocate for women to improve their OHL should be developed.

Objective: Detecting oral lesions at high risk of becoming cancer may enable early interventions to prevent oral cancer. The diagnosis of dysplasia in an oral lesion is used to predict this risk but is subject to interobserver and intraobserver variability. Studying biomarkers or molecular markers that reflect underlying molecular alterations can serve as an additional and objective method of risk assessment. E-cadherin and beta-catenin, molecular markers of epithelial–mesenchymal transition (EMT), potentially contribute to early malignant progression in oral tissue. This narrative review provides an overview of EMT, its relation to oral cancer, and the interaction among E-cadherin, beta-catenin, and the Wnt pathway in malignant progression of oral tissue. Methods: Full-text literature on EMT, E-cadherin, beta-catenin, oral epithelial dysplasia, and oral cancer was retrieved from PubMed and Google Scholar. Results: Sixty original research articles, reviews, and consensus statements were selected for review. Discussion: EMT, a biological mechanism characterized by epithelial and mesenchymal changes, can contribute to cancer development. Molecular markers of EMT including TWIST, vimentin, and N-cadherin may serve as prognostic markers of oral cancer. Dependent on Wnt pathway activity and the loss of membranous E-cadherin, E-cadherin and beta-catenin can play various roles along the spectrum of malignant progression, including tumour inhibition, early tumour progression, and late-stage tumour progression. Cross-sectional immunohistochemical research has found changes in expression patterns of E-cadherin and beta-catenin from normal oral tissue, oral epithelial dysplasia, to oral squamous cell carcinoma. Conclusion: Future research should explore the longitudinal role of EMT markers in predicting malignant progression in oral tissue.

Introduction: Numerous clinical trials and systematic reviews have investigated the effectiveness of both herbal and conventional oral care approaches to reducing plaque and gingivitis. However, their findings vary and are inconsistent. Thus, the objective of this umbrella review is to compile data from systematic reviews and provide an overview of the effects of herbal oral care products on tooth plaque and gingivitis. Methods: A comprehensive search of the literature was performed in 6 databases for systematic reviews with or without meta-analyses, published up to 30 May 2023, without any language restrictions. Only clinical trials comparing herbal oral care products (in the form of mouthrinse or toothpaste) against standard oral care products or placebo were considered. Results: Some herbal oral care products, particularly in the form of mouthrinses, have a similar level of positive effect on plaque and gingivitis reduction and, thus, can be used as an adjunct to traditional dentifrices. However, the shorter duration of trials (<4 weeks) and reported publication bias in the clinical trials mean that these findings must be interpreted with caution. Conclusion: To accurately determine the impact of various herbal extracts on periodontal health, well-designed, long-term, and controlled trials that adhere to standardized protocols must be carried out.

Introduction: Peripheral ossifying fibroma (POF) is a solitary gingival growth thought to arise from the gingiva, periosteum or the periodontal ligament. It is a slow-growing, benign, progressive lesion that is limited in size. Case description: This article describes a case of ossifying fibroma of a peripheral variant that occurred in a 26-year-old female in the anterior region of the lower jaw and presented as a growth on the gingiva. Since it was difficult to diagnose clinically, a pathological evaluation was mandatory. Upon pathological confirmation of the diagnosis, the lesion was surgically excised up to the periosteum. This was deemed to be the required treatment yet, since the recurrence rate is high for POF (8% to 20%), the patient must be followed up yearly to check for recurrence.