{"title":"Comparison Between the Effect of Toothbrush-Generated Ultrasound and Vibration on Tooth Movement Acceleration During Levelling and Alignment: A Randomized Controlled Clinical Trial.","authors":"Wesam Mhd Mounir Bakdach, Rania Hadad","doi":"10.1111/idh.70082","DOIUrl":"https://doi.org/10.1111/idh.70082","url":null,"abstract":"<p><strong>Background: </strong>Ultrasound and vibration have been recently introduced as methods to enhance orthodontic treatment. Although multiple patents were designed for the intraoral application, the current study aimed to assess the effect of toothbrush-generated ultrasound and vibration, in an attempt to provide patients with a practical and available method that might be used in daily orthodontics practice.</p><p><strong>Materials and methods: </strong>The research sample consisted of 36 patients with moderate upper incisor's crowding who were randomly assigned into three equal groups (ultrasound, vibration and control groups). After bonding the fixed orthodontic appliance, the two interventional groups were asked to apply ultrasound and vibration for 15 min/day. Whilst the control group was not subjected to any physical stimulus. A series of dental impressions were taken each two weeks since treatment commencement. Treatment duration and percentage of improvement in Little's Irregularity Index (LII) were used to compare between the groups.</p><p><strong>Results: </strong>The results showed a non-significant difference between the three groups in terms of the treatment duration (P = 0.571) and the percentage of improvement in LII measured from dental casts at all time points.</p><p><strong>Conclusion: </strong>The clinical application of both toothbrush-generated ultrasound and toothbrush-generated vibration, within the used parameters, had no effects on the total duration of treatment and tooth movement acceleration during levelling and alignment of moderate upper incisor's crowding. When comparing both approaches, no differential efficacy was observed at any time point. Future trials may investigate the effects of other parameters of ultrasound and vibration on tooth movement acceleration.</p>","PeriodicalId":13791,"journal":{"name":"International journal of dental hygiene","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147837520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ramy Mubarak Hussein, Sherif Abd El Rahman Amer, Sarah Gamal Moussa
{"title":"Subcutaneous Emphysema Following Subgingival Polishing Using an Air Polishing System With Subgingival Nozzle: A Case Report.","authors":"Ramy Mubarak Hussein, Sherif Abd El Rahman Amer, Sarah Gamal Moussa","doi":"10.1111/idh.70083","DOIUrl":"https://doi.org/10.1111/idh.70083","url":null,"abstract":"<p><strong>Background: </strong>Subcutaneous facial emphysema (SFE) is a rare but potentially serious complication of dental procedures involving pressurised air. While most historically reported cases were associated with air-driven handpieces, more recent literature has also implicated air-polishing systems. However, reports related to the use of subgingival air-polishing nozzles in periodontal pockets remain limited.</p><p><strong>Case presentation: </strong>The presented case demonstrates an SFE that occurred following the use of an air-polishing system in a deep periodontal pocket. A glycine-based air-powder abrasion was used in a 5 mm deep periodontal pocket for biofilm eradication. After which, a periorbital and right cheek swelling arose. Hospitalisation was essential for close surveillance, and antibiotics were administered to control microbial spread. After 3 days, the patient was discharged in a stable condition and without any further complications.</p><p><strong>Conclusion: </strong>SFE may occur during subgingival air polishing, even during supportive periodontal therapy and at sites without bleeding on probing or suppuration. This case highlights that the safety of subgingival air-polishing procedures should not be generalised across all devices and protocols. Careful case selection, strict adherence to device-specific instructions, and early recognition of swelling and crepitus are essential for prompt diagnosis and management.</p>","PeriodicalId":13791,"journal":{"name":"International journal of dental hygiene","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147814613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Joana Albuquerque Bastos de Sousa, Kátia Maria Martins Veloso, Monique Maria Melo Mouchrek, Mayra Moura Franco, Cecilia Claudia Costa Ribeiro, Vandilson Pinheiro Rodrigues, Bruno Braga Benatti
{"title":"Functional Independence Related to Oral Hygiene and Periodontal Status in Patients With Down Syndrome.","authors":"Joana Albuquerque Bastos de Sousa, Kátia Maria Martins Veloso, Monique Maria Melo Mouchrek, Mayra Moura Franco, Cecilia Claudia Costa Ribeiro, Vandilson Pinheiro Rodrigues, Bruno Braga Benatti","doi":"10.1111/idh.70085","DOIUrl":"https://doi.org/10.1111/idh.70085","url":null,"abstract":"<p><strong>Objectives: </strong>This study aimed to investigate the relationship between functional independence, oral hygiene habits and periodontal status in patients with Down syndrome (DS).</p><p><strong>Methods: </strong>A cross-sectional observational study was conducted with 49 patients with Down Syndrome. Sociodemographic data, oral hygiene habits and functional independence were collected. The periodontal assessment included: probing depth (PPD), Clinical Attachment Level (CAL), Gingival Bleeding Index (GBI) and Visible Plaque Index (VPI). A structural equation model was used in the statistical analysis.</p><p><strong>Results: </strong>Regarding functional independence, higher frequencies of self-care skills were observed for eating (91.8%), using the bathroom (91.8%) and dressing (85.7%) and using the phone alone (53.1%). The experience of oral hygiene guidance contributed to an increase in the daily frequency of brushing (SRC = 0.280, SE = 0.134, p = 0.036). It was noted that the older the individual, the greater the impairment of the periodontal condition (p < 0.001). It was observed that greater functional independence was associated with less periodontal compromise.</p><p><strong>Conclusion: </strong>A greater functional independence is related to a better periodontal status. These study findings indicate that the development of self-care skills seems to be a positive strategy for the oral health of DS patients.</p>","PeriodicalId":13791,"journal":{"name":"International journal of dental hygiene","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147814627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C Molina, R P Pimentel, H J R Oballe, F W M G Muniz, C K Rösing
{"title":"Influence of Manual and Powered Toothbrushes on Gingival Lesions: A Systematic Review and Meta-Analysis.","authors":"C Molina, R P Pimentel, H J R Oballe, F W M G Muniz, C K Rösing","doi":"10.1111/idh.70086","DOIUrl":"https://doi.org/10.1111/idh.70086","url":null,"abstract":"<p><strong>Aim: </strong>The aim of the present systematic review is to compare the effects of manual vs. powered toothbrushes on gingival lesions.</p><p><strong>Methods: </strong>Comprehensive literature searches of PubMed, Embase, Scopus, and the Cochrane Library were conducted up to May 6, 2024, to identify randomized clinical trials examining the impact of manual and powered toothbrushes on gingival lesions. Two independent reviewers selected studies according to predefined criteria and extracted relevant data. Risk of bias was assessed using the RoB 2 tool, and certainty of evidence was evaluated using the GRADE approach. Sensitivity analyses were also performed to explore the influence of statistical model choice and study design on the pooled findings. This review was registered in PROSPERO (CRD42022368852).</p><p><strong>Results: </strong>A total of 2978 records were identified, of which 10 studies met the inclusion criteria. The included studies comprised five parallel-group randomized clinical trials and five crossover randomized clinical trials. Analysis of gingival recession showed no statistically significant difference between manual and powered toothbrushes at either 6- or 12-month follow-up (mean difference [MD]: -0.03; 95% confidence interval [95% CI]: -0.07 to 0.02). Studies evaluating gingival abrasion suggested a trend toward fewer abrasions with powered toothbrushes; however, the evidence was inconsistent and mostly based on qualitative findings. The certainty of evidence for both gingival recession and gingival abrasion was very low.</p><p><strong>Conclusions: </strong>The available evidence does not demonstrate a clear difference between manual and powered toothbrushes regarding gingival recession progression. Although some studies suggested fewer gingival abrasions with powered toothbrushes, this finding should be interpreted with caution due to the very low certainty of evidence and the included studies presented important methodological limitations.</p>","PeriodicalId":13791,"journal":{"name":"International journal of dental hygiene","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147814704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Syed Altafuddin Quadri, Waleed Ali F Alshadidi, Mohamed Zahoor Ul Huqh, Chandrika Santoshi Laxmi Villuri, Rajesh Vyas, Sunil Kumar Vaddamanu
{"title":"Comparison of the Periodontal Status Between Orthodontic Aligner Treatment and Traditional Orthodontic Treatment: A Systematic Review and Meta-Analysis.","authors":"Syed Altafuddin Quadri, Waleed Ali F Alshadidi, Mohamed Zahoor Ul Huqh, Chandrika Santoshi Laxmi Villuri, Rajesh Vyas, Sunil Kumar Vaddamanu","doi":"10.1111/idh.70084","DOIUrl":"https://doi.org/10.1111/idh.70084","url":null,"abstract":"<p><strong>Background: </strong>Orthodontic treatment poses notable challenges to dental health, particularly with traditional fixed appliances, which can lead to plaque buildup and gingival weakening. Clear aligners provide an alternative treatment option, allowing patients to remove them for improved oral hygiene. However, the advantages of aligners over traditional fixed appliances concerning periodontal health are still debated.</p><p><strong>Objective: </strong>This meta-analysis aimed to evaluate the comparative effectiveness of clear aligners and traditional fixed appliances in promoting periodontal health among orthodontic patients.</p><p><strong>Method: </strong>Studies were collected from various databases, including Web of Science, ScienceDirect, PubMed, Cochrane Library and Google Scholar. Eligibility for inclusion was determined using the PICO criteria, and the ROBINS-I tool was used for non-randomized controlled trials, and ROB for randomized controlled trials to assess the quality of each selected study.</p><p><strong>Results: </strong>The meta-analysis of 11 studies demonstrated significant periodontal improvements in the aligner group across multiple parameters: plaque index (SMD: -1.25; 95% CI: -1.94, -0.57; p = 0.0003), gingivitis index (SMD: -0.68; 95% CI: -1.13, -0.22; p = 0.004), probing depth (SMD: -1.30; 95% CI: -2.22, -0.38; p = 0.006), sulcus bleeding index (SMD: -2.47; 95% CI: -4.97, -0.04; p = 0.05), and papillary bleeding index (SMD: -2.47; 95% CI: -4.97, -0.04; p = 0.05).</p><p><strong>Conclusion: </strong>Patients undergoing aligner treatment exhibited superior periodontal health when compared to those with traditional fixed appliances. Improvements were observed across various periodontal parameters, suggesting that aligners may offer periodontal health benefits for orthodontic patients.</p>","PeriodicalId":13791,"journal":{"name":"International journal of dental hygiene","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147814530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Association Between Frequency of Toothbrushing and Work-Related Factors in the Japanese Population.","authors":"Seitaro Suzuki, Atsushi Ohyama, Koichi Yoshino, Atsushi Takayanagi, Tomoaki Shibuya, Takako Eguchi, Hideyuki Kamijo, Naoki Sugihara","doi":"10.1111/idh.70081","DOIUrl":"https://doi.org/10.1111/idh.70081","url":null,"abstract":"<p><strong>Objectives: </strong>Work-related factors have been associated with behavioural risk factors, but few studies have explored the association between work-related factors and toothbrushing. This study assessed the association between work-related factors and frequency of toothbrushing.</p><p><strong>Methods: </strong>In this cross-sectional study, an internet survey was conducted from November 24-29, 2021 in Japan. Full- and part-time workers aged 20-69 years were selected from those registered with an online research company and included as participants. Participants were instructed to complete a questionnaire that surveyed their work-related factors and oral health.</p><p><strong>Results: </strong>Data from 1808 participants (896 male, 912 female) were analysed. Among them, 1463 (80.9%) participants brushed their teeth ≥ 2 times per day. Full-time employees, daytime workers, and workers who were satisfied with their jobs were more likely to brush their teeth ≥ 2 times per day. Among participants with work-related stress, those with job satisfaction were more likely to brush their teeth ≥ 2 times per day than those without (odds ratio: 1.66; 95% confidence interval: 1.06-2.58). This association was not observed among participants with no work-related stress.</p><p><strong>Conclusion: </strong>In this study, job satisfaction was associated with more frequent toothbrushing among Japanese workers, particularly those experiencing work-related stress. Especially for stressed workers, strategies to reduce work-related stress and improve job satisfaction may enhance oral health behaviours.</p>","PeriodicalId":13791,"journal":{"name":"International journal of dental hygiene","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147770786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ahmed Yousif Mahdi Asker, Aseel Haidar M J Al Haidar
{"title":"Antimicrobial Efficacy of Pelargonium Graveolens Gold Nanoparticles: A Novel Mouthwash for Children.","authors":"Ahmed Yousif Mahdi Asker, Aseel Haidar M J Al Haidar","doi":"10.1111/idh.70071","DOIUrl":"https://doi.org/10.1111/idh.70071","url":null,"abstract":"<p><strong>Background: </strong>Nowadays, there is a trend to promote the use of natural materials in dentistry. One of these compounds that has lately grown significantly in relevance in clinical research is Pelargonium Graveolens.</p><p><strong>Objectives: </strong>This study was conducted to evaluate the antimicrobial efficacy of gold nanoparticles (AuNPs) of Pelargonium Graveolens leaves extract for children in comparison with the commonly used chlorhexidine. There are no previously available studies concerning the anti-microbial activity of Pelargonium Graveolens leaves.</p><p><strong>Materials and method: </strong>Sixty participants with mild to moderate gingivitis were randomly allocated in a ratio of 1:1 to receive twice-daily mouthwash for 3 weeks (30 with a novel herbal mouthwash containing Pelargonium Graveolens AuNPs as a study group and 30 children with chlorhexidine as a control group). Clinical parameters (plaque index and gingival index) were assessed at the baseline (before the use of mouthwash), and then they were assessed 3 times at one-week intervals after the first assessment through the period of the study. On the other hand, microbiological examination was done using supragingival plaque sampling with a curette for those participants at the baseline and three weeks after the use of the mouthwash.</p><p><strong>Results: </strong>After completing the intervention, although the study group had lower plaque scores compared to the control group, the difference was statistically significant. On the other hand, the study group had a significant reduction in the gingival index scores compared to the control group (p = 0.000). The microbiological analysis revealed that the treatment mouthwash significantly depleted the count of S. mutans in the last visit.</p><p><strong>Conclusion: </strong>The novel Pelargonium Graveolens AuNPs mouthwash was effective in improving (PI) and (GI), which mean improve oral health status. Rinsing with Pelargonium Graveolens AuNPs mouthwash reduced the count of oral Streptococcus mutans significantly in children.</p><p><strong>Clinical trial registration number: </strong>ClinicalTrials.gov on April 15, 2023, with ClinicalTrials.gov ID: NCT05816512.</p>","PeriodicalId":13791,"journal":{"name":"International journal of dental hygiene","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147770753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Daily and Professional Oral Care in Long-Term Care Facilities During the COVID-19 Pandemic: A Cross-Sectional Survey.","authors":"Barbara Janssens, Lynn Janssens, Inès Phlypo","doi":"10.1111/idh.70080","DOIUrl":"https://doi.org/10.1111/idh.70080","url":null,"abstract":"<p><strong>Objectives: </strong>Long-term care settings for care-dependent older adults have been disproportionately affected by repeated outbreaks of COVID-19 among residents and care staff. The aim of the present paper was to assess the delivery of daily and the access to professional oral care in long-term care facilities during COVID-19 as experienced by the care staff.</p><p><strong>Materials and methods: </strong>Data were collected in December 2020 by an online self-administered questionnaire for care home staff in Flanders and descriptive analysis were performed. The study was approved by the ethics committee of Ghent University Hospital (B.U.N.: B6702020000715).</p><p><strong>Results: </strong>The response rate at care home level was 8% and the study sample consisted of 95 staff members from 66 care homes. Oral healthcare was considered as important or even more important since the COVID-19 pandemic started. Nevertheless, 41.2% of the participants suggested daily oral care was left behind more often compared to other aspects of basic care. Natural teeth of residents and removable dentures were mostly brushed once a day but for care home staff who were not directly involved in the provision of daily oral care, the uncertainty around brushing frequency increased during the pandemic. A considerable part of the respondents (35.7%) were faced with urgent unmet oral care needs of residents.</p><p><strong>Conclusion: </strong>Experiences of care home staff suggest that COVID-19 might have negatively affected the delivery of daily and access to professional oral care. However, the low response rate, the possible response bias due to the overrepresentation of care staff implementing an oral care programme, and the lack of observational data to confirm the survey responses require careful interpretation of the results. Yet, an improved response at the level of oral care is needed during future health crises affecting this setting.</p>","PeriodicalId":13791,"journal":{"name":"International journal of dental hygiene","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147770841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effects of an Oral Health Chatbot Based on Protection-Motivation Theory on Plaque Reduction in Young Children: A Quasi-Experimental Study.","authors":"Jaranya Hunsrisakhun, Supawadee Naorungroj, Narisa Heemsuree, Samerchit Pithpornchaiyakul","doi":"10.1111/idh.70066","DOIUrl":"https://doi.org/10.1111/idh.70066","url":null,"abstract":"<p><strong>Objective: </strong>The objective was to compare the effectiveness of hands-on toothbrushing training alone or in conjunction with conventional oral health education (OHE) or with the use of the 21-Day FunDee chatbot on the caregiver's oral hygiene care and plaque control for young children.</p><p><strong>Methods: </strong>A quasi-experimental, parallel, three-group pretest-posttest designed study was applied. The participants included 213 pairs of caregivers and children aged 6-30 months. Each group consisted of 71 pairs of caregivers and children. Participants were divided into three groups: Gr. I was the Hands-On (HO) in-person tooth brushing practice group, Gr. II was the Hands-On and Poster (HO + PO) group with in-person tooth brushing practice and OHE via posters and Gr. III was the Hands-On and Chatbot group (HO + CB) with in-person tooth brushing practice and 21-Day FunDee chatbot media. Oral examinations and a structured questionnaire compared oral hygiene behaviours, oral health perceptions, knowledge and plaque levels among the three groups at baseline and 35-45 days subsequently. Multiple linear regression was used to determine the difference between the three groups on plaque reduction.</p><p><strong>Results: </strong>The majority of caregivers were Muslim mothers. The plaque score reduction was 0.34 ± 0.30, 0.50 ± 0.23 and 0.52 ± 0.25 for Gr. I, II and III, respectively. Compared with the Hands-On group, there was a statistically significant difference in plaque reduction for the Hands-On and Poster group (p-value = 0.039) and the Hands-On and Chatbot group (p-value = 0.047). The baseline frequency of tooth brushing was an important determinant for plaque reduction (p-value = 0.007). However, there was no significant association between baseline knowledge, protection-motivation theory perceptions or educational levels regarding plaque reduction. Both conventional OHE and 21-Day FunDee chatbot media received high user satisfaction ratings.</p><p><strong>Conclusion: </strong>Caregiver-assisted toothbrushing, combined with either conventional oral health education or chatbot support, significantly improved oral hygiene care and plaque control in young children compared with hands-on toothbrushing training alone.</p>","PeriodicalId":13791,"journal":{"name":"International journal of dental hygiene","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147770794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Michelle S Stübi, Moritz Tanner, Blend Hamza, Leonardo Svellenti, Thomas Attin, Florian J Wegehaupt
{"title":"Influence of Tapered-End and Round-End Bristle Designs on the Abrasive Enamel Wear Using Toothpastes With High Discrepancies in Abrasiveness.","authors":"Michelle S Stübi, Moritz Tanner, Blend Hamza, Leonardo Svellenti, Thomas Attin, Florian J Wegehaupt","doi":"10.1111/idh.70073","DOIUrl":"https://doi.org/10.1111/idh.70073","url":null,"abstract":"<p><strong>Purpose: </strong>The aim of this in vitro study was to investigate the influence of bristle end design of toothbrushes and the relative enamel abrasivity (REA) of used toothpaste on the resulting abrasive enamel wear.</p><p><strong>Materials and methods: </strong>A total of 160 bovine enamel samples were allocated into eight groups (n = 20) and surface topography was recorded profilometrically. Samples of groups A-D were brushed with a toothbrush with a tapered-end bristle design, and samples of groups E-H with a round-end bristle design. Brushing was performed in an automatic brushing machine with a frequency of 60 brushing cycles per minute, with reciprocating movements at a constant brushing force of 2.5 N for a total of 6 h. In groups A and E, toothpaste Colgate Total (CT; REA 4); in groups B and F, toothpaste Candida White Diamond (CWD; REA 244); in groups C and G, toothpaste Swiss Smile Diamond Glow (SSDG; REA 177); and in groups D and H, toothpaste Emoform F Diamond (EFD; REA 51) were used. Surface topography was recorded after 6 h of brushing again, and the abrasive enamel wear was calculated.</p><p><strong>Results: </strong>For all three diamond-based toothpastes (CWD, SSDG and EFD), brushing with the round-end toothbrush caused statistically significantly more wear than with the tapered-end toothbrush (p < 0.05). For both toothbrushes, SSDG caused the highest abrasive wear (51.36/6.34 μm resp. 29.71/15.35 μm), followed by CWD (47.61/18.66 μm resp. 7.16/2.23 μm) and EFD (16.91/2.86 μm resp. 5.27/2.11 μm), with the respective differences being statistically significant (median/interquartile range IQR).</p><p><strong>Conclusion: </strong>In combination with diamond-based toothpastes, tapered-end toothbrushes cause less abrasive enamel wear compared to round-end toothbrushes.</p>","PeriodicalId":13791,"journal":{"name":"International journal of dental hygiene","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147770789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}