BMC Oral Health最新文献

{"title":"Dental zirconia residuals recycling: processes, applications, and future perspectives: a scoping review.","authors":"Ahmed Yaseen Alqutaibi, Hatem Hazzaa Hamadallah, Aseel Mohammed Aloufi, Ayman Thamer Alharbi, Rawan Mohammed Alaydaa, Mohammed Ahmed Alghauli","doi":"10.1186/s12903-025-06093-0","DOIUrl":"https://doi.org/10.1186/s12903-025-06093-0","url":null,"abstract":"<p><strong>Background: </strong>This review aimed to address the growing interest in recycling dental zirconia residues, which are a significant byproduct of the CAD/CAM milling process, contributing to environmental and economic concerns. Further, the review evaluates the potential applications of recycled zirconia in dentistry.</p><p><strong>Methods: </strong>This scoping review followed PRISMA-ScR guidelines. Eligible sources included peer-reviewed articles, theses, and conference papers, with no restrictions on time or language; unrelated studies and opinion pieces were excluded. A systematic search was conducted across PubMed, Scopus, and Web of Science databases, as well as relevant grey literature. Two independent reviewers handled study selection, data extraction, and qualitative synthesis. Findings are presented in a narrative format with tables and figures.</p><p><strong>Results: </strong>The search yielded 26 pertinent studies on recycled zirconia, concentrating on recycling methodologies, sintering parameters, and prospective applications. The findings revealed that sintering parameters, including temperature, time, and atmospheric conditions, significantly impacted recycled zirconia's mechanical, physical, and optical properties. The mechanical properties, such as flexural strength, are still lower than those of commercially available dental zirconia. However, the microstructure, density, and shrinkage ratio, alongside the clinically acceptable flexural strength, are encouraging for the clinical adoption of recycled dental zirconia, particularly for short-span bridges. Moreover, the recycled zirconia powder can be applied as fillers in polymethyl methacrylate (PMMA) and as powders for digital scanning.</p><p><strong>Conclusion: </strong>Recycling dental zirconia is both feasible and beneficial; the utilized recycled materials might be adoptable for clinical applications with optimized recycling processes and sintering parameters. Despite the promising findings, challenges remain, particularly in using mechanical behavior compared with commercially available zirconia.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"725"},"PeriodicalIF":2.6,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12079906/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075996","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":"Evaluating the feasibility of conventional and digital impressions of full-arch by the absolute linear deviation method: an in vitro study.","authors":"Jianhua Ji, Luming Wei, Xuzhe Zha, Huiying Guo, Penglai Wang","doi":"10.1186/s12903-025-06068-1","DOIUrl":"https://doi.org/10.1186/s12903-025-06068-1","url":null,"abstract":"<p><strong>Background: </strong>Intraoral scanners (IOS) facilitate dental treatment, but the efficacy in full-arch scanning remains controversial. The aim of this study was to compare arch deformations between conventional impressions (CIs) and digital impressions (DIs) across six distinct spans in the maxillary and mandibular models, using the absolute linear deviation method.</p><p><strong>Methods: </strong>Standard maxillary and mandibular models, each with seven cylindrical landmarks added, were used as the reference. CIs and DIs as test scans (n = 15 each) were performed on the models using silicone impression material and three IOSs: CS3600, Trios3, and Trios5. The trueness of the distances and angles between the remaining cylinders and initial scanning cylinder were evaluated. Data were analyzed using the Kruskal-Wallis and One-way ANOVA tests, with the Bonferroni test for post hoc analysis (α = 0.05).</p><p><strong>Results: </strong>Deviations of DIs increased gradually from smaller spans to full-arch spans, while deviations of CIs remained stable. Within a 5-tooth-units, DIs provided superior trueness compared to CIs (P < 0.05), except for ΔL8, where the results from four impression methods were comparable (P = 0.28). For other measurements, CIs exhibited significantly better trueness than three IOSs (P < 0.05).</p><p><strong>Conclusions: </strong>The current accuracy of IOSs was insufficient for full-arch applications, but suitable for short scan ranges (fixed prostheses within a 5-unit span).</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"720"},"PeriodicalIF":2.6,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12079954/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075973","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":"A comparative study of deformation in hexagonal and star-shaped implant screwdriver heads.","authors":"Amin Nourizadeh, Shima Ghasemi, Elnaz Shafiee, Sevda JafarZadeh, Fatemeh Bakhtiari","doi":"10.1186/s12903-025-06090-3","DOIUrl":"https://doi.org/10.1186/s12903-025-06090-3","url":null,"abstract":"<p><strong>Background: </strong>Dental implants are a popular and effective solution for replacing missing teeth. However, there are challenges such as screw loosening and component failure. This deformation can impact torque application and screw retention. While research has focused on implant system longevity, there is limited investigation into how different screwdriver head designs, particularly hexagonal and star-shaped, perform under repeated opening and closing cycles, which are crucial for long-term implant stability. The study compared the deformation characteristics of hexagonal and star-shaped implant screwdriver heads after multiple opening and closing cycles.</p><p><strong>Methods: </strong>In this in vitro experimental study, abutments were placed on two implant systems mounted in die stone and torqued to 25 N/cm according to the manufacturer's recommendations, using 12 screwdrivers (n = six for each implant). The screwdriver heads underwent examination under a stereomicroscope at 50x magnification. Subsequently, the outline and deformation of the screwdriver head after 0, 50, 100, 200, and 300 opening and closing cycles were analyzed using AutoCAD software. The changes in the surface area of hexagonal and star-shaped driver heads after different cycles were statistically evaluated using SPSS 24 (α = 0.05).</p><p><strong>Results: </strong>The investigation revealed a reduction in the surface area of both hexagonal and star-shaped driver heads with an increase in the frequency of cycles. Notably, following all cycles, except 0-50 and 50-100, the alterations in the surface area of the star-shaped driver head were significantly greater than those observed in the hexagonal driver head (P < 0.001).</p><p><strong>Conclusion: </strong>The study shows that the star-shaped driver head deformed more than the hexagonal one, especially in cycles exceeding 100.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"724"},"PeriodicalIF":2.6,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12079920/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075990","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":"Multilevel risk analysis of postoperative pulmonary complications following mandibular fractures: a retrospective cohort study based on patient characteristics and healthcare system factors.","authors":"Shuwei Liao, Guanxiong Zhu, Liting Zeng, Yang Yu, Zeyu Zhang, Hongru Zhang, Jingyuan Wang, Lina Yu","doi":"10.1186/s12903-025-06080-5","DOIUrl":"https://doi.org/10.1186/s12903-025-06080-5","url":null,"abstract":"<p><strong>Background: </strong>Pulmonary complications (PPCs) following mandibular fractures are serious post-surgery problems. This study analyzed risk factors of PPCs following mandibular fractures using the National Inpatient Sample (NIS) database, aiming to help clinicians specify surgical protocols and postoperative care for patients.</p><p><strong>Method: </strong>A retrospective cohort study was conducted to examine patient demographics, hospital characteristics and preoperative comorbidities for identifying risk factors associated with postoperative pulmonary complications (PPCs). The analysis utilized data from the National Inpatient Sample (NIS) database containing patients undergoing mandibular surgery between 2010 and 2019. The cohort was stratified into two groups: those with PPCs and non-PPC cases. Statistical associations were evaluated through univariate and multivariate logistic regression analyses. A threshold of P ≤ 0.001 was set for statistical significance.</p><p><strong>Results: </strong>The study included 41,984 adult patients (33,017 male; 8,967 female; aged ≥ 18 years), with 3,514 cases of postoperative pulmonary complications (PPCs) subclassified as: 1,347 pneumonia, 2,452 acute respiratory failure (ARF), and 212 pulmonary embolism (PE). For patients with PPCs, there was a significant increase in the age by 8 years, length of stay (LOS) by 12 days, the total charge (TOTCHG) by $163,579, and the mortality rate by 8.9%. Following the analysis, the following risk factors and their incidence were identified: number of comorbidities ≥ 3 (OR = 3.72, 40.4%), fluid and electrolyte disorders (OR = 2.66, 46.7%), obesity (OR = 1.38, 5.0%), congestive heart failure (OR = 1.24, 4.4%), coagulopathy (OR = 1.94, 12.4%), peripheral vascular disorders (OR = 1.53, 5.7%), pulmonary circulation disorders (OR = 7 .93, 4.1%), respiratory diseases (OR = 3.93, 5.2%), other neurological disorders (OR = 1.57, 15.2%), and paralysis (OR = 2.43, 5.0%).</p><p><strong>Conclusion: </strong>In this study, statistical methods were employed to identify the risk factors for pulmonary complications following mandibular fractures, which can aid in the establishment of a sound surgical procedure and postoperative care.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"723"},"PeriodicalIF":2.6,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12079834/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074957","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":"Effect of damage or contamination to the tips of 200 light-curing units.","authors":"Abdulrahman A Balhaddad, Afnan O Al-Zain, Hassan A Alyami, Husain A Almakrami, Osama A Alsulaiman, Eman H Ismail, Richard B Price, Ahmed A Alsulaiman","doi":"10.1186/s12903-025-06126-8","DOIUrl":"https://doi.org/10.1186/s12903-025-06126-8","url":null,"abstract":"<p><strong>Objective: </strong>The light-curing unit (LCU) has become a vital piece of dental equipment that must be correctly maintained. This study investigated the impact of contamination and physical damage to the light tip on the power and radiant emittance values from old and new LCUs.</p><p><strong>Materials and methods: </strong>Two investigators assessed 200 LCUs in dental clinics. The extent of contamination and physical damage to the light-curing unit (LCU) tips was recorded using a scale ranging from 0 to 8, where 0 indicates the absence of damage or contamination, and 8 represents severe damage or contamination. Then, the radiant emittance and power values of the LCU tip were measured using a digital radiometer (Bluephase meter II; Ivoclar, Schaan, Liechtenstein). LCUs that were more than five years old were classified as old. Spearman correlation coefficient was used to determine the relationship between the condition of the LCU and radiant emittance/power (p = 0.05).</p><p><strong>Results: </strong>There were no significant differences in the percent reduction of the power and radiant emittance from the values reported by the manufacturers, as well as the presence of contamination or physical damage scores between old and relatively new light-curing tips (p > 0.05). The mean ± standard deviation percentage reductions in power and radiant emittance from the manufacturer's stated values were 19.2 ± 17.63% and 3.9 ± 16.49%, respectively. Contamination and physical damage had significant positive correlations with the reduction in the power (r = 0.22070, p = 0.0017 and r = 0.27422, p < 0.0001, respectively) and the reduction in the radiant emittance (r = 0.28626, p < 0.0001 and r = 0.36650, p < 0.0001). Increased contamination and physical damage scores corresponded to greater percent reductions in the power and radiant emittance (p < 0.05).</p><p><strong>Conclusions: </strong>Contamination and physical damage to the LCU can negatively impact the light output from LCUs.</p><p><strong>Clinical relevance: </strong>To ensure optimal performance, dentists should regularly monitor the output of their LCUs and examine the devices for any signs of physical damage or contamination.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"718"},"PeriodicalIF":2.6,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12079966/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075944","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":"Effect of thickness on irradiance loss and temperature rise in indirect restorative materials: an in vitro study.","authors":"Aybike Bas, Nilay Ozturk Sheikholaemeh, Fatih Sengul, Fatma Sarac, Sera Simsek Derelioglu, Peris Celikel","doi":"10.1186/s12903-025-06118-8","DOIUrl":"https://doi.org/10.1186/s12903-025-06118-8","url":null,"abstract":"<p><strong>Background: </strong>The polymerization extent of resin cement used for bonding indirect restorations is contingent upon the light transmittance of the indirect restoration materials and the light intensity of the employed light device. The temperature increase during the polymerization of these resin cements via light is a critical factor in preserving pulp health. The present study aimed to assess the optical properties of different thicknesses of indirect restorative materials such as feldspathic ceramics [Vitablocs Mark II, (VBM)], indirect composites [Gradia, (GRA)] and 3D printing resins [VarseoSmile Crown Plus, (VSC)] and the temperature rise on the undersurface of the materials during LED light application.</p><p><strong>Methods: </strong>The irradiance loss, absorbance, and absorbance coefficient values of three indirect restorative materials (VBM, GRA, and VSC) with four different thicknesses (0.5, 1.0, 1.5, and 2.0 mm) were analyzed. A Valo Cordless (Ultradent, USA) LED light device was used as the light source. Light transmittance was measured using a radiometer, and the averages were recorded. The temperature variation (Δt) was recorded using a K-type thermocouple during light application. Data were statistically analyzed at a significance level of 0.05.</p><p><strong>Results: </strong>It was revealed that irradiance loss and absorption values increased, and absorption coefficient values decreased with the increase in thickness in the material groups. The irradiance loss values for VBM and GRA were comparable across all thicknesses. The irradiance loss value for the VSC group was comparable to that of the GRA group and distinct from the VBM group across all thicknesses, except at 0.5 mm (p < 0.05). The assessment of thickness and material groups regarding temperature increase revealed that temperature differential values diminished with more thickness, although no significant difference was seen between the groups (p > 0.05).</p><p><strong>Conclusion: </strong>The absorbance and irradiance loss values of indirect restorative materials escalated with greater thickness, particularly in the VSC group. The efficacy of light-polymerized resin cements may be negatively impacted; therefore, it is advisable to prolong the curing duration for thicker materials. Moreover, as the thickness grows, the thermal exposure of the materials diminishes, resulting in a reduced danger to pulp health.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"716"},"PeriodicalIF":2.6,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12079930/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075969","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":"Predictability of maxillary canine retraction comparing power arm and non-power arm using 24 sets of In-house clear aligner in premolar extraction case: a randomized controlled trial.","authors":"Sawitt Eurutairat, Natnicha Vongtiang, Sakda Wonghinkong, Somchai Manopatanakul, Peerapong Santiwong, Nita Viwattanatipa","doi":"10.1186/s12903-025-05891-w","DOIUrl":"https://doi.org/10.1186/s12903-025-05891-w","url":null,"abstract":"<p><strong>Background: </strong>The bowing effect observed during premolar extractions presents a challenge in clear aligner therapy. This study aims to investigate the accuracy of maxillary tooth movement in first premolar extraction cases using the in-house clear aligner (IHCA), comparing the palatal power arm (PA) and non-power arm (control / C).</p><p><strong>Methods: </strong>Eighteen adults requiring maxillary first premolars extraction using IHCA were recruited. Using a randomized controlled trial with a split-mouth design, each patient received treatment for both PA and C. Data at the 24th IHCA comprising virtual-power arm (VPa), virtual-control (VC), actual-power arm (APa) and actual-control (AC) were measured by superimposition with pretreatment digital model, using 3D GOM Inspect software. Six types of tooth movement were assessed. Paired t-test or Wilcoxon signed-rank test was used to compare the differences between groups. Root mean square error (RMSE) as predictability was computed.</p><p><strong>Results: </strong>For the maxillary canine, there was no significant difference between the PA and C groups for all types of tooth movement except rotation. Specifically, the PA exhibited a significantly less difference in distal-in rotation compared to the control group (APa-VPa -3.54°/AC-VC -11.57°). Similarly, the RMSE of PA demonstrated better accuracy in rotation than the control (PA 7.85°/control 15.98°). In terms of anchorage, the RMSE of PA indicated greater deviation than the control in the second premolar mesial-in rotation and crown-tipping. Regarding the first molar, the RMSE of PA was mostly similar to that of the control.</p><p><strong>Conclusion: </strong>IHCA can effectively retract maxillary canines in cases involving premolar extraction. However, although palatal power arms improve the accuracy of canine rotation, no notable benefits are seen for other types of tooth movement or for anchorage control.</p><p><strong>Trial registration: </strong>Current Controlled Trials ISRCTN14020146 of the International Standard Randomized Controlled Trial. The date of registration was 16/11/2022. The trial was retrospectively registered.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"719"},"PeriodicalIF":2.6,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12079856/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075665","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":"Effects of maxillary molar distalization using clear aligners during the mixed dentition and early permanent dentition with 3 types of Class II traction: a three-dimensional finite element analysis.","authors":"Yue Li, Meiying Wu, Xinyu Xing, Yumiao Chen, Chengle Zhang, Junhan Hu, Congchong Shi","doi":"10.1186/s12903-025-06119-7","DOIUrl":"https://doi.org/10.1186/s12903-025-06119-7","url":null,"abstract":"<p><strong>Background: </strong>Impacts of the developmental stages of maxillary second molars, methods for distalization of the maxillary first molars, Class II traction application, and different traction modes on three-dimensional molar movements, anchorage tooth displacement, and stress distribution remains poorly understood.</p><p><strong>Method: </strong>Patients with maxillary second molars in Nolla 4-6 and 7-8 stages were selected for 3D finite element modeling. We analyzed three-dimensional movements and stress distribution in maxillary and mandibular dentitions after unilateral and bilateral distalization of maxillary first molars using clear aligners, with no traction and three types of Class II traction.</p><p><strong>Results: </strong>In Nolla 4-6 and 7-8 stages, after bilateral molar distalization, maxillary anterior labial inclination, tooth, periodontal membrane and alveolar bone stress were more significant. Movements of maxillary first molars were greater in Nolla 7-8 stages regardless of unilateral or bilateral molar distalization. Either unilateral or bilateral molar distalization, Angel button group provided better anchorage control for central incisors. Precision incision group provided superior anchorage control for lateral incisors and achieved the largest distal movements of maxillary first molars. Lingual button group provided anchorage control for deciduous or permanent canines. Molar distalization modes had no effect on mandibular dentition. Movements and maximum periodontal membrane stress values of mandibular dentition were the smallest in the Angel button group.</p><p><strong>Conclusion: </strong>When moving molars distally, it's necessary to consider the development of maxillary second molar and evaluate the distalization modes, Class II traction modes and the influence on anchorage teeth, to design personalized treatment plan.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"717"},"PeriodicalIF":2.6,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12079971/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075972","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":"Knowledge and attitudes of dental students and interns on minimally invasive dentistry for pediatric dentistry at King Saud University.","authors":"Zain Hafiz, Majdah Alhomaidhi, Reema Almutairi, Alaa Alharbi, Lama Alshahrani, Shaima Alzahrani","doi":"10.1186/s12903-025-06087-y","DOIUrl":"https://doi.org/10.1186/s12903-025-06087-y","url":null,"abstract":"<p><strong>Background: </strong>Minimally invasive dentistry (MID) is a conservative approach focusing on early diagnosis and minimally invasive procedures to prevent the progression of carious lesions.The aim of the study was to assess the knowledge of minimally invasive dentistry among dental students and interns and encourage them to improve their attitudes towards minimally invasive pediatric dentistry (MIPD).</p><p><strong>Methods: </strong>A validated questionnaire used to test the knowledge level of 4th, 5th years dental students and interns was distributed prior to an interventional lecture, followed by an educational lecture on the minimally invasive techniques used in pediatric dentistry and later a post-intervention questionnaire distributed to the dental students and interns.</p><p><strong>Results: </strong>Almost 74% from the 183 study participants reported that they were aware of the term MIPD,73.8% of them had responded positively, and a higher proportion 65.6% of them knew about this through lectures.The study subject's knowledge about MIPD was assessed before they attended the lecture on this topic and after the lecture in multiple responses, where the proportion for different procedures had increased from pre-intervention to post-intervention.</p><p><strong>Conclusion: </strong>It can be concluded that the dental students and interns have an acceptable amount of knowledge on MIPD. However, there is a lack of knowledge on when to use these techniques and how to apply them.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"721"},"PeriodicalIF":2.6,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12079814/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075979","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":"Global, regional, and national caries of permanent teeth incidence, prevalence, and disability-adjusted life years, 1990-2021: analysis for the global burden of disease study.","authors":"Zhiyuan Li, Chenhang Yu, Huan Chen","doi":"10.1186/s12903-025-06086-z","DOIUrl":"10.1186/s12903-025-06086-z","url":null,"abstract":"<p><strong>Objectives: </strong>This study aims to analyze the global, regional, and national incidence, prevalence, and disability-adjusted life years (DALYs) related to caries of permanent teeth from 1990 to 2021, as part of the Global Burden of Disease Study (GBD).</p><p><strong>Study design and methods: </strong>Data on incidence, prevalence, and DALYs were extracted and analyzed for various demographic and regional categories. Age-standardized incidence rates (ASIR), age-standardized prevalence rates (ASPR), and age-standardized DALY rates (ASDAR) were calculated. Temporal trends and associations with sociodemographic index (SDI) were also examined.</p><p><strong>Results: </strong>In 2021, there were approximately 2.37 billion cases of caries of permanent teeth, with an ASIR of 29,777.03 per 100,000 population. The prevalence was around 2.24 billion, with an ASPR of 27,543.34 per 100,000. Females exhibited a higher disease burden than males, and the burden increased with age, peaking in the 20-24 age group. Regions with lower SDI showed higher ASIRs, while the highest burden was noted in Tropical Latin America. Significant increases in disease burden were observed from 1990 to 2021, particularly in China and Colombia, while Japan showed a decrease. The Bayesian age-period-cohort (BAPC) predictions indicate that the burden of caries of permanent teeth will continue to increase year by year.</p><p><strong>Conclusion: </strong>The burden of caries of permanent teeth varies significantly across regions and demographics, with higher rates in lower SDI areas. The findings underscore the importance of targeted interventions and resource allocation in high-burden regions to improve dental health outcomes.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"715"},"PeriodicalIF":2.6,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12070580/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143969225","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}