Canadian Journal of Dental Hygiene (CJDH)

Background: Periodontal disease continues to be prevalent globally, but little clinical research has been undertaken to evaluate the long-term benefits of a daily oral hygiene regimen on progression of gingivitis/early periodontitis. The objective of this study was to evaluate the effects of an oral hygiene regimen (OHR) on the periodontal health of adults in good general health with established gingivitis and early periodontitis over 24 months. Methods: A randomized controlled trial was conducted in adults with established gingivitis, with isolated sites of probing pocket depth >4 mm. Study participants were randomized to the OHR (bioavailable stannous fluoride dentifrice, oscillating-rotating electric toothbrush, cetylpyridinium chloride rinse, and floss; P&G) or usual care products (sodium fluoride dentifrice and manual toothbrush; P&G) groups. At baseline and every 6 months, gingivitis and periodontal measures were assessed and a prophylaxis was conducted. The primary outcome was Gingival Bleeding Index–Bleeding Sites (GBI–BS). Analyses used ANCOVA at 5% significance levels. Results: A total of 107 individuals were enrolled; 87 completed the study. Mean GBI–BS, Modified Gingival Index, and Probing Pocket Depth (PPD) scores were significantly lower at each visit for the OHR versus usual care group by 28% to 39%, 12% to 18%, and 6% to 13%, respectively (p = 0.0009). The magnitude of reduction in median number of =2 mm PPD loss events for OHR versus the usual care group at 24 months was 74%. Conclusion: Long-term use of the OHR produced significant periodontal health improvements versus the usual care products.

Objective: The purpose of this project was to understand the variation in admission criteria to Canadian dental hygiene programs and determine whether the criteria are appropriate in predicting a program’s success rate on the National Dental Hygiene Certification Exam (NDHCE). Methods: Admission criteria were gathered from the websites of English-language dental hygiene programs in Canada. Individual dental hygiene programs were also contacted directly by phone or email if their admission criteria were not outlined on the program website. NDHCE success rates for each program were collected from the National Dental Hygiene Certification Board website. The association between the admission criteria and NDHCE success rates was examined. Pearson’s product moment correlations were performed for post-secondary credits required for admission and program length. Results: Admission criteria for 29 of 30 dental hygiene programs were examined. Twenty-two programs accepted applicants directly from high school. The average program length was 83.7 weeks. Four programs offered post-diploma baccalaureate degrees in dental hygiene; one program offered a direct entry-to-practice degree program. Twenty-two (22) of the 29 programs utilized academic grades (including overall and/or prerequisite GPA) as admission criteria. Twelve programs included interviews in the admission process. A moderate correlation was observed between the number of postsecondary credits required for admission and NDHCE success rates (r = 0.6723). A weak correlation was found between program length and NDHCE success rates (r = 0.1797). Conclusion: Academic performance as an admission criterion, including overall/prerequisite GPA, was the most common criterion used by dental hygiene programs. Graduates from programs that required more postsecondary credits tended to perform better on the NDHCE. The higher success rate may be attributed to the rigour of the prerequisite courses, which may prepare students for dental hygiene studies and ultimately success on the national examination. In addition, students with more postsecondary coursework may be better adjusted to studies at a postsecondary level and/or be more experienced at taking examinations.

Objective: To evaluate the clinical efficacy and safety profile of a novel-designed isosceles-configured (SUN Teeth™) toothbrush in comparison to a standard reference toothbrush with end-rounded bristles (approved by the American Dental Association [ADA]). Methods: The sample size was determined using the G-Power-software, version 3.1.2 and, accordingly, 104 subjects (ages 19 years to 25 years) were recruited and randomized into either the test group (n = 54) or the control group (n = 50). Prior to study commencement, scaling was performed followed by abstinence from oral hygiene for 24 hours. Baseline pre-brushing gingivitis scores (Lobene) and plaque scores (Turesky modification of Quigley Hein) were recorded. Brushing was performed for 3 minutes and post-brushing scores were recorded on days 1, 14, and 28 without refraining from regular brushing. Data were analysed with Statistical Package for Social Sciences (IBM-SPSS, v.25.0). Results: Post-brushing plaque scores showed significant reduction in both groups at all time intervals. However, no significant differences between the test and control brush groups were achieved at any time points. Conclusion: The isosceles-configured SUN TeethTM toothbrush is equivalent in plaque removal to the conventional flat-bristled ADA reference brush.

Objective: The aim of this review is to explore dental hygienists’ risk for noiseinduced hearing loss (NIHL) and to describe the current hearing protection options. Methods: A literature search was undertaken using the following databases: PubMed, CINAHL, Cochrane Libraries, and Google Scholar. The returns were screened using inclusion and exclusion criteria and the remaining studies were critically appraised. Results and Discussion: Seventeen articles assessed noise levels and NIHL risk in dental settings; and 11 articles examined hearing protection devices. The literature revealed that oral health practitioners were exposed to excessive noise limits (85 dBA) in an 8-hour workday, therefore increasing the risk of NIHL. Oral health professionals need to be aware of this risk and the preventive measures they can take to reduce the potential for hearing loss. Effective preventive measures may include hearing protective devices (HPDs), educational programs, insulated noise-absorbing materials, and regular monitoring of noise exposure. Conclusion: Dental hygienists may be at risk for permanent or temporary hearing loss in their work environment. Permanent hearing loss from the use of ultrasonic scalers appears to be minimal. To prevent hearing loss, active (electronic) HPDs are recommended as they allow practitioners to protect their hearing and communicate with clients.

Introduction: Marginalized, low-income individuals face many barriers to dental care, including but not limited to cost. The Student Health Initiative for the Needs of Edmonton (SHINE) dental clinic is a student-operated volunteer clinic offering free services to low-income individuals. This study aimed to explore the access to dental care needs of low-income groups, from community health brokers’ perspectives. Case description: The study was deemed exempt from ethical approval (Pro00074745). Five semistructured interviews exploring access to dental care were conducted with health brokers purposefully selected from 4 different community outreach centres. Access was defined and analysed using Penchansky and Thomas’ theory of access as modified by Saurman. Results: Interviews revealed lack of awareness of the SHINE clinic. Translation and interpretation support was an identified need, and there was concern for clients who fear discrimination in health care settings. Conclusion: Preliminary barriers to care at SHINE were identified. However, further investigation is required to understand how SHINE aligns with population needs.