BMC Oral Health最新文献

{"title":"Doxycycline-integrated silk fibroin hydrogel: preparation, characterizations, and antimicrobial assessment for biomedical applications.","authors":"Kranti Kiran Reddy Ealla, Chandra Sri Durga, Vikas Sahu, Neema Kumari, Jayachandran Venkatesan, Vishnu Priya Veeraraghavan, Pratibha Ramani, Kiran Kumar Bokara, Karthikeyan Ramalingam","doi":"10.1186/s12903-025-05568-4","DOIUrl":"10.1186/s12903-025-05568-4","url":null,"abstract":"<p><strong>Background: </strong>Tooth extraction, a common dental procedure, is often accompanied by pain, trismus, and swelling due to alveolitis caused by oral bacteria. Doxycycline is prescribed to alleviate infection and improve socket healing, but its immediate absorption in the bloodstream makes the treatment less effective at oral sites. This emphasizes the importance of a drug delivery system to gradually slow its release at the oral wound site and increase its bioavailability to make the treatment effective over time.</p><p><strong>Methods: </strong>Silk fibroin (SF) - doxycycline hyclate (DH) hydrogel was developed and subsequently characterized for gelation kinetics, swelling, stress-strain analysis, morphology using scanning electron microscopy, interaction between SF and DH using Fourier transform infrared (FT-IR) spectroscopy, drug release profile, antibacterial efficacy, and biocompatibility studies.</p><p><strong>Results: </strong>The results indicated that the SF-DH hydrogel maintained its structural integrity, tolerated stress and strain, and featured interconnected pores, confirming DH integration within the SF matrix. The SF-DH hydrogel formed within 8 h with the pore size range of 20-150 μm and 90.72 kPa Young's modulus. The drug release profile showed the increased release of DH up to 2 h, followed by sustained release till 8 h. The zone of inhibition was smaller with SF-DH hydrogels compared with DH for both Staphylococcus aureus and Streptococcus mutans. Furthermore, MC3T3-E1 cells showed 90% viability with SF-DH hydrogel.</p><p><strong>Conclusions: </strong>The findings suggest that SF-DH hydrogel showed sufficient mechanical strength, pore size, antimicrobial activity, and biocompatibility. Further in vivo and clinical tests are required to prove its efficacy in effective socket healing.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"177"},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11787760/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143073822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Malignant transformation of proliferative Verrucous Leukoplakia-systematic review & meta-analysis.","authors":"Khadijah Mohideen, Snehashish Ghosh, Chandrasekaran Krithika, Mutaz Ali-Hassan, Revant Chole, Safal Dhungel","doi":"10.1186/s12903-025-05565-7","DOIUrl":"10.1186/s12903-025-05565-7","url":null,"abstract":"<p><strong>Background: </strong>Proliferative Verrucous Leukoplakia (PVL) presents a unique manifestation of Oral Leukoplakia, characterized by its notable propensity for rapid advancement, dynamic clinical and histopathological alterations, and heightened risk of malignant transformation.</p><p><strong>Aim: </strong>The present systematic review explores the demographic characteristics, risk factors, progression patterns, treatment preferences, and outcomes for PVL lesions that undergo malignant transformation.</p><p><strong>Materials and methods: </strong>An electronic search was executed across various databases, such as PubMed, Scopus, Science Direct, Web of Science and Wiley Online Library from 1985 to December 2023, focusing on studies of PVL malignant transformation. Data on demographics, clinical features, treatment, and outcome data were synthesized, with bias assessed using Joanna Briggs Institute Criteria and outcomes evaluated using Comprehensive Meta-Analysis version (CMA) 3.0 software.</p><p><strong>Results: </strong>Among 998 articles, 53 met inclusion criteria, covering 1159 PVL patients, with 48.4% experiencing malignant transformation over an average 6.28 ± 3.73-year follow-up. Most cases had low or moderate bias risk. In the malignant group, females comprised 74.3% of cases, with a mean age of 66.23 ± 7.76 years and had a 1.96 times greater risk of developing cancer (OR 1.96, 95% CI 1.38-2.782; p = 0.001). Gingiva (20%) and gingiva/buccal mucosa (17.4%) were commonly affected. Tobacco and alcohol showed weak associations, with most patients being non-smokers (59.54%) and non-drinkers (78.18%). HPV and candida infection positivity were tested in only a few studies and noted in a limited number of cases (33.3% and 38.46%, respectively). Malignant transformation mainly was invasive carcinoma (86.8%). Surgery was the primary treatment (58.33%), with 55.56% recurrence in 162 cases of data availability on recurrence. Of 228 patients with data availability, 33.77% succumbed to oral cancer from PVL-related oral cancer.</p><p><strong>Conclusions: </strong>PVL, a rare variant of leukoplakia, poses a significant risk of cancer, emphasizing the need for vigilant monitoring and proactive treatment. It mainly affects elderly females without typical cancer risk factors. Understanding its etiology could aid early detection and management.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"175"},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11786437/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143073146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of simulated gastric acid on the physical and mechanical properties of vacuum-formed retainers: an in vitro study.","authors":"Huda M Alkawari, Laila F Baidas, Areen A Alyahya, Renad A Alotaibi, Eman I Alshayea","doi":"10.1186/s12903-025-05548-8","DOIUrl":"10.1186/s12903-025-05548-8","url":null,"abstract":"<p><strong>Background: </strong>A decrease in oral pH levels may have detrimental effects on vacuum-formed retainers since an acidic oral environment could impact the mechanical and physical properties of these retainers. The present In vitro study aimed to evaluate the effect of simulated gastric acid at pH 4 and 1.2 on the surface microhardness, flexural strength, and color change of three different types of orthodontic retainer materials.</p><p><strong>Methods: </strong>A total of 144 vacuum-formed commercially available retainer materials: copolyesters, polypropylene, and PET-G (n = 48/group) were evaluated. Each specimen was immersed in distilled water, and then the specimens were divided into two subgroups: those with a pH of 4 and those with a pH of 1.2. The microhardness test was performed using Innovatest, the flexural strength was evaluated by a universal testing machine, and the color change was analyzed using a spectrophotometer. The data were analyzed using One-Way ANOVA and independent sample t test at a significance value of P ≤ 0.05.</p><p><strong>Results: </strong>Our findings indicated a significant decrease in flexural strength in all the experimental groups after immersion in pH 1.2 and 4 solutions (P < 0.001), with PET-G being the most affected material, followed by copolyester and polypropylene. Only copolyester demonstrated a significant decrease in surface microhardness following immersion in a pH 4 solution (P = 0.025). All materials exhibited the greatest degree of color alteration CP (P = 0.006), PP (P = 0.001), and PET-G (P = 0.009) respectively.</p><p><strong>Conclusion: </strong>The study concluded that copolyester adversely affects flexural strength, surface microhardness, and color when subjected to immersion in simulated gastric acid. Therefore, care is recommended for patients diagnosed with gastroesophageal reflux disease.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"172"},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11786568/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143073750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In-vitro simulation methods for mechanical plaque removal: a systematic scoping review of current techniques and future directions.","authors":"Johannes Herzog, Jelena Karacic, Leonardo Svellenti, Philipp Sahrmann","doi":"10.1186/s12903-025-05558-6","DOIUrl":"10.1186/s12903-025-05558-6","url":null,"abstract":"<p><strong>Background and objectives: </strong>Different methods to simulate plaque in order to test the efficacy of oral cleaning methods have been published. This scoping review aims to provide an overview of the existing models and to highlight their respective benefits and limitations.</p><p><strong>Material and methods: </strong>Following the recommended scoping review methodology the scientific literature was systematically searched electronically (PubMed and Scopus) and by hand search up to July 2024, using combinations of search items related to oral plaque simulation, periodontitis or peri-implantitis. Retrieved study titles and abstracts were screened for possible inclusion. Finally, data from included fulltexts was extracted by two independent reviewers. Nine different characteristics for proper plaque simulation method were defined and each existing method evaluated and rated accordingly, and an overall rating was calculated for each method.</p><p><strong>Results: </strong>Initially, 1787 records were identified. After abstract and title screening and fulltext revision, 25 fulltexts describing 7 different simulation methods, were included. The assessed methods of simulation were ink (12), varnish (5), calcium phosphate (1), calcium carbonate (1), occlusal spray (3), aluminum (1), commercially distributed and prepared artificial plaque (2). Even though some materials achieved good results in the assessment for individual criteria like water solubility, big differences could be found concerning practicability and production time, no simulation method was rated \"very good\" or even \"good\" in the overall evaluation. While ink and varnish were considered simulation materials of moderate quality for oral plaque simulation, all other techniques were assessed as weak simulation materials.</p><p><strong>Conclusion: </strong>Among the different published methods for the simulation of mechanical plaque removal, none seems to sufficiently simulate the essential characteristics of oral plaque, while some simulation methods may be useful to feature single properties of plaque in in-vitro studies sufficiently. Nevertheless, advanced models reflecting the diverse features of dental plaque more comprehensively are needed.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"178"},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11787744/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143073753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Qualitative and quantitative agreement research on three diagnostic methods for maxillary transverse discrepancy.","authors":"Zhang Ningbo, Wang Tianxiao, Yan Feng, Chen Rui, Fu Xinyu, Ren Liling","doi":"10.1186/s12903-025-05495-4","DOIUrl":"10.1186/s12903-025-05495-4","url":null,"abstract":"<p><strong>Objective: </strong>The purpose of this cross-sectional study is to compare the agreement of three diagnostic methods for maxillary transverse deficiency (MTD) across different skeletal malocclusion.</p><p><strong>Methods: </strong>Three hundred and sixty patients were categorized into skeletal classes I, II, and III based on the ANB angle and assessed using University of Pennsylvania analysis (UPA), Yonsei transverse analysis (YTA), and Andrews Element III analysis (AEA). The intraclass correlation coefficient (ICC) was used to evaluate quantitative agreement, while Cohen's kappa was used to measure qualitative agreement.</p><p><strong>Results: </strong>In class I, the AEA showed moderate quantitative agreement with the UPA and AEA (ICC = 0.712), but the UPA and YTA had poor agreement (ICC = 0.404). Qualitatively, UPA and AEA were highly consistent (kappa = 0.896), while YTA and UPA (kappa = 0.371), YTA and AEA (kappa = 0.330) were poor uniformity. For class II, AEA and UPA showed moderate quantitative (ICC = 0.708) and high qualitative agreement (kappa = 0.917), while YTA's qualitative agreement with UPA (kappa = 0.550)/AEA (kappa = 0.544) was moderate. In class III, the AEA again had moderate quantitative agreement with the UPA (ICC = 0.657) and YTA (ICC = 0.580), but the agreement between the UPA and YTA is poor (ICC = 0.408). UPA and YTA were similar in qualitative agreement (kappa > 0.8), and both showed substantial agreement with AEA (kappa = 0.657).</p><p><strong>Conclusion: </strong>1. The incidence of MTD is highest in the skeletal class III group and the lowest in the skeletal class II group. 2. The results of YTA, AEA and UPA for diagnosing MTD are only consistent in patients with skeletal class III. In clinical practice, all three methods can be used to diagnose MTD in patients with skeletal class III malocclusion. 3. For patients with skeletal class I and class II malocclusion, it is recommended to use AEA and UPA for MTD diagnosis.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"174"},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11786532/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143073463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Technological dental sealants: in vitro evaluation of material properties and antibiofilm potential.","authors":"Witalo Pereira de Jesus, Luiza de Almeida Queiroz Ferreira, Washington Henrique Themoteo da Silva, Fernanda Vieira Belém, Ana Paula Turrioni, Cláudia Silami de Magalhães, Mila Fernandes Moreira Madeira, Ivana Márcia Alves Diniz, Marco Aurelio Benini Paschoal","doi":"10.1186/s12903-024-05303-5","DOIUrl":"10.1186/s12903-024-05303-5","url":null,"abstract":"<p><strong>Background: </strong>Due to the launch of new self-etching and self-adhesive sealing materials combined with the release of bioactive ions in the dental market, this in vitro study aimed to compare physical values of surface roughness (RS), vickers microhardness (VM), compositional energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), microbiological tests (inhibition halo-HI and surface microbial adhesion-MAS) and mechanical microshear bond strength (MBS).</p><p><strong>Methods: </strong>The following groups were analyzed: Beautisealant® self-etching sealant (Shofu)(G1), FluroShield® conventional sealant (Dentsply)(G2- Control Group), Flow Constic® self-adhesive/self-etching resin (DMG)(G3) and Beautifil Flow Plus F03® conventional resin (Shofu)(G4). For the physical and compositional tests, specimens were molded and submitted to finishing/polishing in a metallographic polisher. RS and VM were measured through 5 readings. For the HI test, specimens were exposed to S. mutans for 24 h in brain-heart infusion (BHI) agar under microaerophilic conditions, with the diameter of the HI (mm) measured by digital caliper. For the MAS test, a bacterial biofilm of S. mutans was induced for five days in BHI broth + 5% sucrose and measurement of CFU/ml (log₁₀ from serial dilutions). For the MBS test, specimens were made in bovine enamel with the addition of the experimental group FluroShield® (Dentsply) + Single Bond Universal® adhesive (3 M)(G5) and measured in a universal testing machine. Data were submitted to ANOVA and Tukey's post hoc tests (p < 0.05) using the SPSS software.</p><p><strong>Results: </strong>Different compositions proven in the EDS test were not determinants of the promotion of different RS: G1 = 0,19 (± 0,07), G2 = 0,15 (± 0,053), G3 = 0,13 (± 0,046), G4 = 0,14 (± 0,056); HI: G1 = 17,7 (± 1,36), G2 = 18,7 (± 3,47), G3 = 18,9 (± 4,87), G4 = 17,9 (± 3,61) and MAS: G1 = 5,22 (± 0,12), G2 = 5,15 (± 0,15), G3 = 5,12 (± 0,20), G4 = 5,06 (± 0,24). However, statistically influenced the values of VM: G1 = 16,71 (± 1,93), G2 = 16,28 (± 4,91), G3 = 26,11 (± 3,46), G4 = 37.9 (± 4.87), promoted lesser bacterial adhesion (G4 = 5.06 ± 0.24), and demonstrated fluoride ion only in the G4. Higher MBS was found in the conventional materials G5 = 8.38 (± 2.05) and G2 = 6.28 (± 1.35).</p><p><strong>Conclusions: </strong>Bioactive materials and self-adhesive/self-etching for sealing pits and fissures did not demonstrate superior mechanical and antimicrobial properties performance compared to conventional techniques.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"171"},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11786408/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143073524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ChatGPT-4 Omni's superiority in answering multiple-choice oral radiology questions.","authors":"Melek Tassoker","doi":"10.1186/s12903-025-05554-w","DOIUrl":"10.1186/s12903-025-05554-w","url":null,"abstract":"<p><strong>Objectives: </strong>This study evaluates and compares the performance of ChatGPT-3.5, ChatGPT-4 Omni (4o), Google Bard, and Microsoft Copilot in responding to text-based multiple-choice questions related to oral radiology, as featured in the Dental Specialty Admission Exam conducted in Türkiye.</p><p><strong>Materials and methods: </strong>A collection of text-based multiple-choice questions was sourced from the open-access question bank of the Turkish Dental Specialty Admission Exam, covering the years 2012 to 2021. The study included 123 questions, each with five options and one correct answer. The accuracy levels of ChatGPT-3.5, ChatGPT-4o, Google Bard, and Microsoft Copilot were compared using descriptive statistics, the Kruskal-Wallis test, Dunn's post hoc test, and Cochran's Q test.</p><p><strong>Results and discussion: </strong>The accuracy of the responses generated by the four chatbots exhibited statistically significant differences (p = 0.000). ChatGPT-4o achieved the highest accuracy at 86.1%, followed by Google Bard at 61.8%. ChatGPT-3.5 demonstrated an accuracy rate of 43.9%, while Microsoft Copilot recorded a rate of 41.5%.</p><p><strong>Conclusion: </strong>ChatGPT-4o showcases superior accuracy and advanced reasoning capabilities, positioning it as a promising educational tool. With regular updates, it has the potential to serve as a reliable source of information for both healthcare professionals and the general public.</p><p><strong>Clinical trial number: </strong>Not applicable.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"173"},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11786404/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143073812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prevalence and determinants of early childhood caries among preschool children in district Shimla, North India: a cross -sectional study.","authors":"Seema Thakur, Reetica Sharma, Parul Singhal, Deepak Chauhan","doi":"10.1186/s12903-025-05435-2","DOIUrl":"10.1186/s12903-025-05435-2","url":null,"abstract":"<p><strong>Background: </strong>A high prevalence of early childhood caries (ECC) has been reported in children over the past few decades making it a major health burden. The study investigated the prevalence of ECC and associated factors among the preschool children of Shimla district.</p><p><strong>Methods: </strong>An observational cross-sectional study was carried out in various government and private preschools of district Shimla from July 2022 to November 2022 where children in the age group of 3-5 years were screened for ECC using the dmft index and their BMI (body mass index) and salivary pH was recorded. Information regarding socio-economic status (SES), feeding, dietary and oral hygiene habits were collected through questionnaire circulated to the parents. Prevalence of ECC was calculated. Association of various factors with ECC prevalence was done using chi square test and correlation of factors with prevalence of ECC was assessed using Spearman's correlation coefficient. Binomial logistic regression analysis was performed to assess these variables for prevalence of ECC. The level of statistical significance was determined at p ≤ 0.05.</p><p><strong>Results: </strong>1224 school children and their parents were included in the study. The overall prevalence and mean dmf score was 61.6% and 3.21 ± 3.92 respectively. Among these 57% children had caries at 3 years, 64.7% at 4 years and 69.5% at 5 years. Increasing age was associated with increasing prevalence of ECC (OR = 1.034, p = 0.006). The upper socio economic status was significantly associated with risk of ECC than other categories (p = 0.046). Decreasing salivary pH was associated with increased prevalence of ECC (OR = 0.656, p <. 001).</p><p><strong>Conclusion: </strong>The study demonstrated a high prevalence of ECC in the district along with setting the baseline data for the region. Increasing age, upper socioeconomic status and decreasing salivary pH are significantly associated in likelihood of caries whereas other factors like BMI, dietary and feeding and oral hygiene habits are also important factors which were directly or indirectly related to the burden of this disease. Efforts should be made to create more awareness and provide oral health care facilities to help keep the disease under control.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"168"},"PeriodicalIF":2.6,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11786517/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143073462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Relationship between subjective masticatory performance assessed by food acceptance questionnaire and comprehensively assessed oral function in older outpatients at a dental hospital in Japan: a cross-sectional study.","authors":"Ryota Futatsuya, Yohei Hama, Mitsuzumi Okada, Mayuko Matsuzaki, Linjing Xiong, Kohei Yamaguchi, Kanako Noritake, Yoshiyuki Sasaki, Manabu Kanazawa","doi":"10.1186/s12903-025-05534-0","DOIUrl":"10.1186/s12903-025-05534-0","url":null,"abstract":"<p><strong>Background: </strong>With the global rise in the aging population, the relationship between oral function and risk of long-term care is attracting attention. One method for subjective assessment of masticatory function is the use of a food acceptance questionnaire. Although it is hypothesized that objective oral functions such as tongue pressure and swallowing function are associated with subjective masticatory performance, this relationship has yet to be investigated. The aim of this study is to elucidate the association between overall oral function and subjective masticatory performance using a food questionnaire.</p><p><strong>Methods: </strong>Patients aged ≥ 65 years were recruited from an outpatient dental clinic at Tokyo Medical and Dental University. Subjective masticatory performance was assessed using the food acceptance score as described in a previous study. Seven oral function parameters defined by the Japanese Society of Gerodontology, were measured. Age, sex, number of functional teeth, geriatric depression, cognitive function, and oral health-related quality of life were assessed. Variables for which normality was rejected were transformed into tertile values. Multiple regression analysis was conducted with the food acceptance score as the objective variable, and each oral function parameter and other items as explanatory variables.</p><p><strong>Results: </strong>This study included 201 participants (87 males and 114 females). Multiple regression analysis revealed that the number of functional teeth, geriatric depression, oral health-related quality of life, objective masticatory performance, tongue pressure, and swallowing function were substantially associated with the food acceptance scores.</p><p><strong>Conclusions: </strong>This study demonstrated that subjective masticatory performance was independently associated with tongue pressure, objective masticatory performance, swallowing function, number of functional teeth, geriatric depression, and oral health-related quality of life.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"169"},"PeriodicalIF":2.6,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11786402/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143073598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of different polymeric materials of implant and attachment on stress distribution in implant-supported overdentures: a three-dimensional finite element study.","authors":"Sherif Elsayed, Yousra Ahmed, Mohamed I El-Anwar, Enas Elddamony, Reem Ashraf","doi":"10.1186/s12903-025-05440-5","DOIUrl":"10.1186/s12903-025-05440-5","url":null,"abstract":"<p><strong>Purpose: </strong>Investigating high performance thermoplastic polymers as substitutes to titanium alloy, in fabrication of implants and attachments to support mandibular overdenture, aiming to overcome stress shielding effect of titanium alloy implants. AIM OF STUDY: Assessment of stress distribution in polymeric prosthetic components and bone around polymeric implants, in case of implant-supported mandibular overdenture.</p><p><strong>Materials and methods: </strong>3D finite element model was established for mandibular overdenture, supported bilaterally by two implants at canine region, and retained by two ball attachments. Linear static stress analysis was carried out by ANSYS 2020 R1. Three identical models were created with different materials for modeling of prosthetic components (implant body, gingival former, ball attachment and matrix). The Monolithic principle was applied as the same material was used in modelling all the prosthetic components in each model (Titanium alloy grade V, poly-ether-ether-ketone (PEEK) and poly-ether-ketone-ketone (PEKK)). Simultaneous Force application of 60 N was carried out bilaterally at the first molar occlusal surface area using 3 runs (vertical, lateral and oblique).</p><p><strong>Results: </strong>PEEK and PEKK prosthetic components exhibited the highest total deformation and critical Maximum von Mises stresses values in implant body and gingival former under lateral and oblique loads. The stress values approached the fatigue limit of both polymeric materials presenting low factor of safety (< 1.5). The Peri-implant cortical bone in case of PEEK and PEKK showed nearly double maximum principal stresses compared with the titanium model. Conversely, Maximum von Mises stresses in spongy bone were lower in polymeric models than those of titanium ones. Additionally maximum equivalent strain values in spongy peri-implant bone of polymeric models were also lower than those of titanium model.</p><p><strong>Conclusion: </strong>Critical high stresses were induced in implant body and gingival former under oblique or lateral loadings, accordingly, fatigue failure of both PEEK and PEKK polymer prosthetic elements was estimated due to low factor of safety. Both PEEK and PEKK Polymer models offered no advantage over titanium one regarding stress shielding effect, due to low stress and strain values generated at spongy peri-implant bone in polymer models.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"166"},"PeriodicalIF":2.6,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11783779/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143063665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}