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Correlation between general quality of life and oral health related quality in the mixed dentition. 混合牙列中一般生活质量与口腔健康相关质量之间的相关性。
IF 1.5 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2024-05-13 eCollection Date: 2024-01-01 DOI: 10.1590/1807-3107bor-2024.vol38.0039
Diego Patrik Alves Carneiro, Grazielle Araújo Dos Santos, Caroline Nogueira de Moraes, Marcelo de Castro Meneghim, Silvia Amélia Scudeler Vedovello

The aim of this study was to evaluate the convergence between the domains of the Autoquestionnaire Qualité de Vie Enfant image (AUQUEI) and the Child Perceptions Questionnaire (CPQ8-10) in the mixed dentition. A sample of 676 children aged 8 to 10 years responded to the health-related quality of life (HRQoL) and oral health-related quality of life (OHRQoL) questionnaires using the AUQUEI and the CPQ8-10, respectively. Clinical (dental caries and malocclusion) and socioeconomic variables were assessed. The validity of convergence between scores (total and per domain) of the two instruments was assessed by Spearman correlation analysis, considering that non-zero coefficient values represented a correlation between scores. The median was calculated to compare the scores of each questionnaire relative to the variables, and the nonparametric Mann-Whitney test was applied to determine statistically significant differences between the categories. A weak significant correlation (between 0.30 and 0.50) was observed between the domains and the total scores of instruments (p < 0.05), except for the leisure domain (p > 0.05). Participants with a lower family income had worse HRQoL (p < 0.05), and those with caries and malocclusion experience had worse OHRQoL (p < 0.05). In conclusion, the AUQUEI and CPQ8-10 instruments showed a weak correlation. Income and clinical variables had a negative impact on the AUQUEI and CPQ8-10, respectively.

本研究的目的是评估混合牙列中儿童生活质量自动问卷(AUQUEI)和儿童认知问卷(CPQ8-10)各领域之间的趋同性。676 名 8 至 10 岁的儿童样本分别使用 AUQUEI 和 CPQ8-10 回答了健康相关生活质量 (HRQoL) 和口腔健康相关生活质量 (OHRQoL) 问卷。对临床变量(龋齿和咬合不正)和社会经济变量进行了评估。通过斯皮尔曼相关分析评估了两份问卷得分(总分和每个领域的得分)之间的一致性,认为非零系数值代表了得分之间的相关性。通过计算中位数来比较每份问卷相对于变量的得分,并采用非参数曼-惠特尼检验来确定不同类别之间在统计上的显著差异。除休闲领域(p>0.05)外,其他领域与工具总分之间存在弱相关性(介于 0.30 和 0.50 之间)(p<0.05)。家庭收入较低的参与者的 HRQoL 较差(p < 0.05),有龋齿和错颌畸形经历的参与者的 OHRQoL 较差(p < 0.05)。总之,AUQUEI 和 CPQ8-10 工具显示出微弱的相关性。收入和临床变量分别对 AUQUEI 和 CPQ8-10 有负面影响。
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引用次数: 0
Research interest on dental sealant in dentistry based on the 100 most cited articles: bibliometric analysis. 根据 100 篇被引用次数最多的文章对牙科中牙科密封剂的研究兴趣:文献计量分析。
IF 1.5 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2024-05-13 eCollection Date: 2024-01-01 DOI: 10.1590/1807-3107bor-2024.vol38.0044
Melissa Santos da Silva Simões, Aurélio de Oliveira Rocha, Mariana Perini Zendron, Pablo Silveira Santos, Michele Bolan, Carla Miranda Santana, Mariane Cardoso

The aim of this study was to identify and analyze the characteristics of the 100 most cited articles about dental sealants (DS) in dentistry. In September 2023, a search was performed in the Web of Science Core Collection (WoS-CC) database. The following information was extracted from each article: number and density of citations, year of publication, authorship, journal, impact factor, keywords, study design, theme, continent, country, and institution. The citations of the WoS-CC were compared with those of the Scopus and Google Scholar databases. The VOSviewer software was used to generate collaborative networks. The number of citations ranged from 33 to 205. The articles were published between 1961 and 2016. Buonocore MG (7%) was the most prominent author among the most cited. The Journal of the American Dental Association was the most frequent journal (25%) and Journal of Dental Research (7.6) had the highest impact factor. Most studies had interventional (41%) and laboratory (31%) designs, mainly addressing DS effectiveness in the prevention and control of dental caries (86%). There was a predominance of publications from North America (46%) and the USA was the country with the highest number of articles (44%). The most frequent institutions were the Centers for Disease Control and Prevention (USA) and the University of Rochester (USA) (6% each). "Retention" was the most frequent keyword. In conclusion, the 100 most cited articles were mostly interventional and laboratory studies, addressing the retention and efficacy of DS. Most of the articles were concentrated in North America and Europe, demonstrating a little collaboration from other continents.

本研究旨在确定和分析牙科中有关牙缝剂(DS)的 100 篇被引用次数最多的文章的特点。2023 年 9 月,我们在科学网核心库(WoS-CC)数据库中进行了搜索。从每篇文章中提取了以下信息:引用次数和密度、发表年份、作者、期刊、影响因子、关键词、研究设计、主题、大陆、国家和机构。WoS-CC 的引文与 Scopus 和 Google Scholar 数据库的引文进行了比较。使用 VOSviewer 软件生成协作网络。引用次数从 33 次到 205 次不等。文章发表于 1961 年至 2016 年之间。Buonocore MG(7%)是被引用次数最多的作者。美国牙科协会期刊》是被引用次数最多的期刊(25%),《牙科研究期刊》(7.6)的影响因子最高。大多数研究都采用了干预性(41%)和实验室(31%)设计,主要涉及 DS 在预防和控制龋齿方面的有效性(86%)。来自北美的论文占多数(46%),美国是论文数量最多的国家(44%)。发表文章最多的机构是美国疾病控制和预防中心(Centers for Disease Control and Prevention)和美国罗切斯特大学(University of Rochester)(各占6%)。"保留 "是出现频率最高的关键词。总之,被引用次数最多的 100 篇文章大多是介入性研究和实验室研究,涉及 DS 的保留和疗效。大多数文章都集中在北美和欧洲,其他大洲的合作较少。
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引用次数: 0
Dental research related to COVID-19 in Brazil: research presented at the 38th SBPqO Meeting. 巴西与 COVID-19 相关的牙科研究:在第 38 届 SBPqO 会议上提交的研究报告。
IF 1.5 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2024-05-13 eCollection Date: 2024-01-01 DOI: 10.1590/1807-3107bor-2024.vol38.0035
Luisa Gatti-Reis, Alice Corrêa Silva-Sousa, Isabela Almeida Pordeus, Saul Martins Paiva, Flávio Freitas Mattos

The aim of this study was to identify and describe the characteristics of coronavirus (COVID-19)-disease related dental research in Brazil presented at the 38th Annual Meeting of the Brazilian Division of the International Association for Dental Research (SBPqO). A search was carried out in the proceedings of the meeting to retrieve all abstracts. Those containing the term "COVID-19" in titles, abstracts, or keywords, and/or those of which the scope approached a COVID-19-related topic were included. The variables extracted from abstracts were: presenter category, field of study, design, data collection method, population, affiliation, and authors' gender. Descriptive and inferential statistics were used, with a significance level of α = 0.05. The search retrieved 185 abstracts, 5 did not meet study eligibility criteria and were excluded. COVID-19-related research was presented by either aspiring/associate members (67.8%) or beginner members (32.2%). Data collection methods were predominantly digitally mediated (65%), followed by secondary data use (25%), and in-person data collection (7.2%). Irrespective of the role of authorship, there were a ratio of two female authors to each male. Among the last authors, the ratio was three females to each male. Female lead authors more frequently came from the Southeast region (71.8%; p = 0.470). There was an association between presenter category and study design (p = 0.012), clinical and epidemiological studies were more concentrated among experienced presenters. In conclusion, female dental researchers affiliated to southeastern institutions approached the topic of pandemic more frequently than male colleagues. The use of digital technology for data collection may have long-lasting impacts on the teaching and publication of dental research.

本研究旨在确定和描述在国际牙科研究协会(SBPqO)巴西分会第 38 届年会上发表的巴西冠状病毒(COVID-19)疾病相关牙科研究的特点。我们在会议论文集中检索了所有摘要。那些在标题、摘要或关键词中包含 "COVID-19 "一词的摘要和/或那些范围接近 COVID-19 相关主题的摘要都被包括在内。从摘要中提取的变量包括:作者类别、研究领域、设计、数据收集方法、人群、所属单位和作者性别。采用描述性和推断性统计方法,显著性水平为 α = 0.05。搜索共检索到 185 篇摘要,其中 5 篇不符合研究资格标准而被排除。与 COVID-19 相关的研究由有抱负的会员/准会员(67.8%)或初级会员(32.2%)提交。数据收集方法主要以数字为媒介(65%),其次是使用二手数据(25%)和亲自收集数据(7.2%)。无论作者的角色如何,男女作者的比例均为 2:1。在最后作者中,男女比例为三比一。女性主要作者更多来自东南部地区(71.8%;p = 0.470)。主持人类别与研究设计之间存在关联(p = 0.012),临床和流行病学研究更集中于经验丰富的主持人。总之,隶属于东南部院校的女性牙科研究人员比男性同行更经常接触大流行病话题。使用数字技术收集数据可能会对牙科研究的教学和出版产生长期影响。
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引用次数: 0
Inhibition of lipopolysaccharide-induced NF-κB maintains osteogenesis of dental pulp and periodontal ligament stem cells. 抑制脂多糖诱导的 NF-κB 可维持牙髓和牙周韧带干细胞的成骨功能。
IF 1.5 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2024-05-13 eCollection Date: 2024-01-01 DOI: 10.1590/1807-3107bor-2024.vol38.0037
Ferry Sandra, Janti Sudiono, Angliana Chouw, Maria Celinna, Nurrani Mustika Dewi, Melanie Sadono Djamil

Dental pulp stem cells (DPSCs) and periodontal ligament stem cells (PDLSCs) can differentiate into osteoblasts, indicating that both are potential candidates for bone tissue engineering. Osteogenesis is influenced by many environmental factors, one of which is lipopolysaccharide (LPS). LPS-induced NF-κB activity affects the osteogenic potencies of different types of MSCs differently. This study evaluated the effect of LPS-induced NF-κB activity and its inhibition in DPSCs and PDLSCs. DPSCs and PDLSCs were cultured in an osteogenic medium, pretreated with/without NF-κB inhibitor Bay 11-7082, and treated with/without LPS. Alizarin red staining was performed to assess bone nodule formation, which was observed under an inverted light microscope. NF-κB and alkaline phosphatase (ALP) activities were measured to examine the effect of Bay 11-7082 pretreatment and LPS supplementation on osteogenic differentiation of DPSCs and PDLSCs. LPS significantly induced NF-κB activity (p = 0.000) and reduced ALP activity (p = 0.000), which inhibited bone nodule formation in DPSCs and PDLSCs. Bay 11-7082 inhibited LPS-induced NF-κB activity, and partially maintained ALP activity and osteogenic potency of LPS-supplemented DPSCs and PDLSCs. Thus, inhibition of LPS-induced NF-κB activity can maintain the osteogenic potency of DPSCs and PDLSCs.

牙髓干细胞(DPSCs)和牙周韧带干细胞(PDLSCs)可以分化成成骨细胞,这表明两者都是骨组织工程的潜在候选者。骨生成受多种环境因素的影响,脂多糖(LPS)就是其中之一。LPS 诱导的 NF-κB 活性会对不同类型间充质干细胞的成骨能力产生不同影响。本研究评估了 LPS 诱导的 NF-κB 活性及其对 DPSCs 和 PDLSCs 的抑制作用。在成骨培养基中培养 DPSCs 和 PDLSCs,使用/不使用 NF-κB 抑制剂 Bay 11-7082 进行预处理,并使用/不使用 LPS 进行处理。采用茜素红染色法评估骨结节的形成,并在倒置光学显微镜下进行观察。测定NF-κB和碱性磷酸酶(ALP)活性,以研究Bay 11-7082预处理和LPS补充对DPSCs和PDLSCs成骨分化的影响。LPS能明显诱导NF-κB活性(p = 0.000),降低ALP活性(p = 0.000),从而抑制DPSCs和PDLSCs的骨结节形成。Bay 11-7082抑制了LPS诱导的NF-κB活性,并部分维持了ALP活性和LPS补充的DPSCs和PDLSCs的成骨能力。因此,抑制 LPS 诱导的 NF-κB 活性可维持 DPSCs 和 PDLSCs 的成骨潜能。
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引用次数: 0
Patient-, implant- and prosthetic-related factors on peri-implant mucositis and bone loss. 种植体周围粘膜炎和骨质流失的患者、种植体和修复体相关因素。
IF 1.5 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2024-05-13 eCollection Date: 2024-01-01 DOI: 10.1590/1807-3107bor-2024.vol38.0040
Lélis Gustavo Nícoli, Carolina Mendonça de Almeida Malzoni, Paulo Fermino da Costa Neto, Claudio Marcantonio, Suzane Cristina Pigossi, Cassiano Kuchenbecker Rösing, Francisco Wilker Mustafa Gomes Muniz, Marcelo Gonçalves, Daniela Leal Zandim-Barcelos, Elcio Marcantonio Junior

Peri-implant diseases, including peri-implant mucositis (PIM) and peri-implantitis, are a chronic inflammatory disorder triggered by bacterial biofilm in susceptible hosts. Potential risk factors for peri-implant diseases include smoking, dental plaque accumulation, poor oral hygiene, genetics, and absence of peri-implant keratinized mucosa. This cohort study aimed to evaluate the influence of patient-, implant-, and prosthetic-related factors on PIM and peri-implant bone loss (PBL) around dental implants after 1 year of loading. A total of 54 subjects (22 males and 32 females) were included in the study. Peri-implant clinical parameters were assessed and standardized periapical radiographs of each dental implant were obtained 15 days after the definitive prosthesis installation (baseline) and at 3, 6, and 12 months of follow-up. A total of 173 implants were evaluated. PIM affected 44.8% of the implants and no significant association was found between the investigated parameters and PIM incidence, except for type of implant connection. A significantly higher incidence of PIM (80.0%) was observed for implants with internal hexagon connection type after 1 year of follow-up (p = 0.015). Moreover, a mean PBL of 0.35 ± 1.89 mm was observed and no dental implant was affected by peri-implantitis after 1 year of function. No specific influence of patient, implant, or prosthetic factors on PBL was observed. No association was found between the occurrence of PIM/PBL and the patient-, implant-, and prosthetic-related factors investigated in this cohort study, except for the type of dental-implant connection.

种植体周围疾病,包括种植体周围粘膜炎(PIM)和种植体周围炎,是由易感宿主体内的细菌生物膜引发的一种慢性炎症性疾病。种植体周围疾病的潜在风险因素包括吸烟、牙菌斑堆积、口腔卫生不良、遗传以及种植体周围角化粘膜缺失。这项队列研究旨在评估患者、种植体和修复体相关因素对种植体植入一年后种植体周围骨质疏松(PIM)和种植体周围骨质流失(PBL)的影响。研究共纳入了 54 名受试者(22 名男性和 32 名女性)。研究人员评估了种植体周围的临床参数,并在最终安装修复体 15 天后(基线)以及随访 3、6 和 12 个月时为每个种植体拍摄了标准化的根尖周 X 光片。共对 173 个种植体进行了评估。44.8%的种植体受到 PIM 的影响,除种植体连接类型外,调查参数与 PIM 发生率之间没有发现明显的关联。随访一年后,发现内六角连接类型的种植体的 PIM 发生率明显更高(80.0%)(p = 0.015)。此外,观察到的平均 PBL 为 0.35 ± 1.89 mm,没有种植体在使用 1 年后受到种植体周围炎的影响。没有发现患者、种植体或修复体因素对 PBL 有特殊影响。在这项队列研究中,除了牙科与种植体连接的类型外,未发现 PIM/PBL 的发生与患者、种植体和修复体相关因素之间存在关联。
{"title":"Patient-, implant- and prosthetic-related factors on peri-implant mucositis and bone loss.","authors":"Lélis Gustavo Nícoli, Carolina Mendonça de Almeida Malzoni, Paulo Fermino da Costa Neto, Claudio Marcantonio, Suzane Cristina Pigossi, Cassiano Kuchenbecker Rösing, Francisco Wilker Mustafa Gomes Muniz, Marcelo Gonçalves, Daniela Leal Zandim-Barcelos, Elcio Marcantonio Junior","doi":"10.1590/1807-3107bor-2024.vol38.0040","DOIUrl":"10.1590/1807-3107bor-2024.vol38.0040","url":null,"abstract":"<p><p>Peri-implant diseases, including peri-implant mucositis (PIM) and peri-implantitis, are a chronic inflammatory disorder triggered by bacterial biofilm in susceptible hosts. Potential risk factors for peri-implant diseases include smoking, dental plaque accumulation, poor oral hygiene, genetics, and absence of peri-implant keratinized mucosa. This cohort study aimed to evaluate the influence of patient-, implant-, and prosthetic-related factors on PIM and peri-implant bone loss (PBL) around dental implants after 1 year of loading. A total of 54 subjects (22 males and 32 females) were included in the study. Peri-implant clinical parameters were assessed and standardized periapical radiographs of each dental implant were obtained 15 days after the definitive prosthesis installation (baseline) and at 3, 6, and 12 months of follow-up. A total of 173 implants were evaluated. PIM affected 44.8% of the implants and no significant association was found between the investigated parameters and PIM incidence, except for type of implant connection. A significantly higher incidence of PIM (80.0%) was observed for implants with internal hexagon connection type after 1 year of follow-up (p = 0.015). Moreover, a mean PBL of 0.35 ± 1.89 mm was observed and no dental implant was affected by peri-implantitis after 1 year of function. No specific influence of patient, implant, or prosthetic factors on PBL was observed. No association was found between the occurrence of PIM/PBL and the patient-, implant-, and prosthetic-related factors investigated in this cohort study, except for the type of dental-implant connection.</p>","PeriodicalId":9240,"journal":{"name":"Brazilian oral research","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11376655/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140921466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of hospital dental care for patients with special needs in Brazil. 巴西为有特殊需要的病人提供的医院牙科护理分析。
IF 1.5 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2024-05-10 eCollection Date: 2024-01-01 DOI: 10.1590/1807-3107bor-2024.vol38.0007
Amanda Beatriz Gonçalves Vivacqua, Edson Hilan Gomes de Lucena, Gilberto Alfredo Pucca Júnior, Fábio Carneiro Martins

This analytical cross-sectional study aimed to analyze the access of patients with special needs (PSN) in Brazilian municipalities to hospital dental care of the Unified Health System (Sistema Único de Saúde - SUS), based on data from the Hospital Information System of the Unified Health System (Sistema de Informações Hospitalares do SUS- SIH/SUS - SIH), from 2010 to 2018. The Kolmogorov-Smirnov normality test was performed; the Poisson regression was used to verify factors associated with the variable total number of hospitalization authorizations with the main procedure of dental treatment for PSN ("Total de Autorizações de Internação Hospitalar" - AIH), the Spearman correlation test with a significance level of 5% was used to characterize the relationships between the Municipal Human Development Index per municipality - (Índice de Desenvolvimento Humano Municipal - HDI) and the Oral Health Coverage in the Family Health Strategy by municipality (Cobertura de saúde bucal na estratégia saúde da família por município - SBSF Coverage), and the relationship of the AIH with SBSF Coverage. A total of 127,691 procedures were performed, of which 71,517 (56%) were clinical procedures, such as restorations, endodontic treatments, supra and subgingival scaling, among others. Municipalities in the Midwest (PR=5.117) and Southeast (RP = 4.443) regions had more precedures than the others. A weak correlation was found between AIH and SBSF Coverage (r = -0.2, p < 0.001) and HDI and SBSF Coverage (r = -0.074, p < 0.001). Population size, region, health coverage, oral hygiene, and number of dentists in hospitals affected the availability of dental procedures in PSN.

本分析性横断面研究旨在根据统一卫生系统医院信息系统(Sistema de Informações Hospitalares do SUS- SIH/SUS - SIH)2010年至2018年的数据,分析巴西各市有特殊需求的患者(PSN)获得统一卫生系统(Sistema Único de Saúde - SUS)医院牙科护理的情况。对数据进行了 Kolmogorov-Smirnov 正态性检验;使用泊松回归验证与以牙科治疗为主要程序的 PSN 住院授权总数变量("Total de Autorizações de Internação Hospitalar" - AIH)相关的因素、采用显著性水平为 5%的斯皮尔曼相关性检验来描述各市人类发展指数(Índice de Desenvolvimento Humano Municipal - HDI)与各市家庭健康战略中口腔健康覆盖率(Cobertura de saúde bucal na estratégia saúde da família por município - SBSF Coverage)之间的关系,以及 AIH 与 SBSF 覆盖率之间的关系。共进行了 127,691 次手术,其中 71,517 次(56%)为临床手术,如修复、牙髓治疗、龈上和龈下洗牙等。中西部(PR=5.117)和东南部(RP=4.443)地区的城市比其他地区有更多的先例。发现 AIH 与 SBSF 覆盖率(r = -0.2,p < 0.001)和 HDI 与 SBSF 覆盖率(r = -0.074,p < 0.001)之间存在微弱的相关性。人口数量、地区、医疗覆盖率、口腔卫生和医院中牙医的数量影响了 PSN 中牙科手术的可用性。
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引用次数: 0
Biomechanical behavior of three maxillary expanders in cleft lip and palate: a finite element study. 唇腭裂患者使用三种上颌扩张器的生物力学行为:有限元研究。
IF 1.5 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2024-04-08 eCollection Date: 2024-01-01 DOI: 10.1590/1807-3107bor-2024.vol38.0010
Angela Maria Bautista Patiño, Monise de Paula Rodrigues, Roberto Sales Pessoa, Salomón Yezioro Rubinsky, Ki Beom Kim, Carlos José Soares, Guilherme de Araújo Almeida

This study evaluated the stress distribution in the dentoalveolar and palatal bone structures during maxillary expansion in a 17-year-old male patient with bilateral cleft lip and palate (BCLP) using expanders with dental (HYRAX) and skeletal anchorage (MARPE). For the generation of the specific finite element models, cone-beam computed tomography was used, and the DICOM files were exported to Mimics 3-Matic (Materialise) and Patran (MSC Software) software. Three specific three-dimensional models were generated: A) HYRAX: conventional four-banded hyrax screw (9 mm); B) MARPE-DS: 3 miniscrews (1.8 mm diameter - 5.4 mm length) and four-banded dental anchorage; and C) MARPE-NoDS: 3 miniscrews without dental anchorage. Maxillary expansion was simulated by activating the expanders transversely 1 mm on the "X" axis. HYRAX resulted in higher levels of deformation predominantly in the dentoalveolar region. MARPE-DS showed stress in the dentoalveolar region and mainly in the center of the palatal region, at approximately 4,000 με. MARPE-NoDS exhibited evident stress only in the palatal region. High stress levels in the root anchoring teeth were observed for HYRAX and MARPE-DS. In contrast, MARPE-NoDS cause stress on the tooth structure. The stress distribution from the expanders used in the BLCP showed asymmetric expansive behavior. During the initial activation phase of expansion, the HYRAX and MARPE-DS models produced similarly high strain at the dentoalveolar structures and upper posterior teeth displacement. The MARPE-NoDS model showed restricted strain on the palate.

本研究评估了一名 17 岁双侧唇腭裂(BCLP)男性患者在使用带牙科(HYRAX)和骨骼固定(MARPE)的扩张器进行上颌扩张时牙槽骨和腭骨结构的应力分布情况。为了生成特定的有限元模型,使用了锥形束计算机断层扫描,并将 DICOM 文件导出到 Mimics 3-Matic (Materialise) 和 Patran (MSC Software) 软件。生成了三种特定的三维模型:A) HYRAX:传统的四带式 Hyrax 螺钉(9 毫米);B) MARPE-DS:3 个微型螺钉(直径 1.8 毫米 - 长度 5.4 毫米)和四带式牙科锚固装置;C) MARPE-NoDS:3 个微型螺钉,无牙科锚固装置。通过在 "X "轴上横向激活扩张器 1 毫米来模拟上颌扩张。HYRAX 主要在齿槽区产生了较大的变形。MARPE-DS 在牙槽区显示出应力,主要在腭区中心,约为 4,000 με。MARPE-NoDS 仅在腭区表现出明显的应力。在 HYRAX 和 MARPE-DS 中观察到牙根锚定齿的应力水平较高。相比之下,MARPE-NoDS 会对牙齿结构造成应力。BLCP 中使用的扩张器的应力分布显示出不对称的扩张行为。在膨胀的初始激活阶段,HYRAX 和 MARPE-DS 模型在牙槽结构和上后牙移位处产生了类似的高应变。MARPE-NoDS 模型在腭部显示出有限的应变。
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引用次数: 0
Effect of pH on the solubility and volumetric change of ready-to-use Bio-C Repair bioceramic material. pH 值对即用型 Bio-C 修复生物陶瓷材料的溶解度和体积变化的影响。
IF 1.5 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2024-04-05 eCollection Date: 2024-01-01 DOI: 10.1590/1807-3107bor-2024.vol38.0028
Luana Raphael da Silva, Jader Camilo Pinto, Juliane Maria Guerreiro-Tanomaru, Mário Tanomaru-Filho

Acidic pH can modify the properties of repair cements. In this study, volumetric change and solubility of the ready-to-use bioceramic repair cement Bio-C Repair (BCR, Angelus, Londrina, PR, Brazil) were evaluated after immersion in phosphate-buffered saline (PBS) (pH 7.0) or butyric acid (pH 4.5). Solubility was determined by the difference in initial and final mass using polyethylene tubes measuring 4 mm high and 6.70 mm in internal diameter that were filled with BCR and immersed in 7.5 mL of PBS or butyric acid for 7 days. The volumetric change was established by using bovine dentin tubes measuring 4 mm long with an internal diameter of 1.5 mm. The dentin tubes were filled with BCR at 37°C for 24 hours. Scanning was performed with micro-computed tomography (micro-CT; SkyScan 1176, Bruker, Kontich, Belgium) with a voxel size of 8.74 µm. Then, the specimens were immersed in 1.5 mL of PBS or butyric acid at and 37 °C for 7 days. After this period, a new micro-CT scan was performed. Bio-C Repair showed greater mass loss after immersion in butyric acid when compared with immersion in PBS (p<0.05). Bio-C Repair showed volumetric loss after immersion in butyric acid and increase in volume after immersion in PBS (p<0.05). The acidic pH influenced the solubility and dimensional stability of the Bio-C Repair bioceramic cement, promoting a higher percentage of solubility and decrease in volumetric values.

酸性 pH 可以改变修补水门汀的特性。本研究评估了即用型生物陶瓷修复水门汀 Bio-C Repair(BCR,Angelus,Londrina,PR,Brazil)在磷酸盐缓冲盐水(PBS)(pH 7.0)或丁酸(pH 4.5)中浸泡后的体积变化和溶解度。用高 4 毫米、内径 6.70 毫米的聚乙烯管注入 BCR,并在 7.5 毫升的 PBS 或丁酸中浸泡 7 天,根据初始质量和最终质量的差异确定溶解度。体积变化是通过使用长 4 毫米、内径 1.5 毫米的牛牙本质管来确定的。在 37°C 下将 BCR 注入牙本质管 24 小时。使用体素尺寸为 8.74 微米的微型计算机断层扫描(micro-CT;SkyScan 1176,布鲁克公司,比利时孔蒂奇)进行扫描。然后,将标本浸泡在 1.5 mL 的 PBS 或丁酸中,温度为 37 °C,时间为 7 天。之后,进行新的 micro-CT 扫描。与在 PBS 中浸泡相比,Bio-C 修复体在丁酸中浸泡后的质量损失更大(p
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引用次数: 0
Short curing time bulk fill composite systems: volumetric shrinkage, degree of conversion and Vickers hardness. 短时间固化散装填充复合材料体系:体积收缩率、转化率和维氏硬度。
IF 1.5 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2024-04-05 eCollection Date: 2024-01-01 DOI: 10.1590/1807-3107bor-2024.vol38.0030
Camila Sobral Sampaio, João Luiz Bittencourt de Abreu, Batsheva Kornfeld, Eduardo Moreira da Silva, Marcelo Giannini, Ronaldo Hirata

This study aimed to evaluate volumetric polymerization shrinkage, degree of conversion and Vickers hardness of four bulk-fill resin composites light-activated with their dedicated light curing units (LCUs). Four groups were evaluated, according to the type of composite and curing mode: Tetric EvoCeram Bulk-fill (TEBO) and Tetric EvoFlow Bulk-fill (TEBF) were light-activated with Bluephase Style 20i (20s, in high-mode), while Tetric Powerfill (TEPO) and Tetric Powerflow (TEPF) were light-activated with Bluephase PowerCure (3s). Volumetric polymerization shrinkage test (n = 6) was performed in standardized box-shaped class-I cavities of extracted third molars (4 x 4 x 4 mm). Teeth were scanned before and after resin composite application by micro-computed tomography, and acquired data were evaluated with Amira software. Degree of conversion (n = 5) was evaluated at the top and bottom surfaces of composite cylindric samples (4 mm diameter, 4 mm thickness) using an FT-IR spectrometer (spectra between 1,500 and 1,800 cm-1, 40 scans at a resolution of 4 cm-1). Three Vickers indentations (50 g / 15 s), spaced 500 μm apart, were performed on the top and bottom composite surfaces and averaged. One-way ANOVA was used for data evaluation. TEPF showed the lowest volumetric polymerization shrinkage (p < 0.05), while the other composites were not significantly different within each other (p > 0.05). All materials presented a significant decrease in degree of conversion and Vickers hardness when compared top to bottom surfaces (p < 0.05). Bottom to top surface ratios for degree of conversion ranged from 0.8 (TEBO and TEPO) to 0.9 (TEBF and TEPF), and from 0.4 (TEPO) to 0.7 (TEBF and TEPF) for hardness. In conclusion, resinous materials present a decrease in hardness and degree of conversion from top to bottom even when a higher power is used, while the flowable material TEPF showed the lowest volumetric shrinkage values compared to the other materials.

本研究旨在评估使用专用光固化装置(LCU)光激活的四种散装填充树脂复合材料的体积聚合收缩率、转化率和维氏硬度。根据复合材料的类型和固化模式,对四组进行了评估:Tetric EvoCeram Bulk-fill(TEBO)和 Tetric EvoFlow Bulk-fill(TEBF)用 Bluephase Style 20i 光固化(20 秒,高模式),而 Tetric Powerfill(TEPO)和 Tetric Powerflow(TEPF)用 Bluephase PowerCure 光固化(3 秒)。在拔出的第三磨牙(4 x 4 x 4 毫米)的标准盒形 I 类牙洞中进行了体积聚合收缩测试(n = 6)。使用微型计算机断层扫描技术对树脂复合材料应用前后的牙齿进行扫描,并使用 Amira 软件对获取的数据进行评估。使用傅立叶变换红外光谱仪(光谱介于 1,500 和 1,800 cm-1 之间,分辨率为 4 cm-1 时扫描 40 次)评估了复合材料圆柱形样品(直径 4 毫米,厚度 4 毫米)上下表面的转化程度(n = 5)。在顶部和底部复合材料表面进行三次维氏压痕(50 克/15 秒),每次间隔 500 微米,然后求平均值。数据评估采用单因素方差分析。TEPF 的体积聚合收缩率最低(p < 0.05),而其他复合材料之间的差异不大(p > 0.05)。与上下表面相比,所有材料的转化率和维氏硬度都明显下降(p < 0.05)。转换度的底面与顶面比率从 0.8(TEBO 和 TEPO)到 0.9(TEBF 和 TEPF)不等,硬度从 0.4(TEPO)到 0.7(TEBF 和 TEPF)不等。总之,即使使用较高的功率,树脂材料的硬度和转化程度也会从上到下降低,而与其他材料相比,流动材料 TEPF 的体积收缩值最低。
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引用次数: 0
Systemic benefits of periodontal therapy in patients with obesity and periodontitis: a systematic review. 肥胖和牙周炎患者牙周治疗的系统性益处:系统性综述。
IF 1.5 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2024-04-05 eCollection Date: 2024-01-01 DOI: 10.1590/1807-3107bor-2024.vol38.0031
Cláudia Callegaro de Menezes, Davi da Silva Barbirato, Mariana Fampa Fogacci, Guido Artemio Marañón-Vásquez, João Régis Ivar Carneiro, Lucianne Copple Maia, Maria Cynésia Medeiros de Barros

This systematic review aimed to answer the focused question: "What are the benefits of subgingival periodontal therapy on blood hematological and biochemical index, biomarkers of inflammation and oxidative stress, quality of life, and periodontal pathogen counts in patients with obesity and periodontitis?". A systematic literature search was performed in six databases: PubMed, Embase, LILACS, Web of Science, Cochrane and SCOPUS and other sources, and a manual search was conducted as well. Inclusion criteria were randomized and non-randomized clinical trials, and before-and-after studies on patients with obesity subjected to periodontal therapy. The results were synthesized qualitatively. Risk of bias within studies was assessed using RoB 2 and ROBINS-I tools. The certainty of evidence was evaluated following the GRADE approach. Three randomized controlled trials and 15 before-and-after studies were included. Randomized controlled trials were considered to have a low risk of bias, as compared to before-and-after studies assessed as having low, serious, and critical risks of bias. Non-surgical periodontal therapy plus azithromycin, chlorhexidine, and cetylpyridinium chloride reduced blood pressure and decreased serum levels of HbA1c, hsCRP, IL-1β, and TNF-α. Salivary resistin level also decreased in patients with obesity and periodontitis after therapy and chlorhexidine mouth rinse. Before-and-after data suggest an improvement in total cholesterol, LDL, triglycerides, insulin resistance, C3, GCF levels of TNF-α, chemerin, vaspin, omentin-1, visfatin, 8-OHdG, and periodontal pathogen counts after therapy.

本系统综述旨在回答一个重点问题:"龈下牙周治疗对肥胖和牙周炎患者的血液和生化指标、炎症和氧化应激生物标志物、生活质量以及牙周病原体数量有哪些益处?我们在六个数据库中进行了系统的文献检索:PubMed、Embase、LILACS、Web of Science、Cochrane 和 SCOPUS 及其他来源,同时还进行了人工检索。纳入标准为随机和非随机临床试验,以及肥胖症患者接受牙周治疗前后的对比研究。对研究结果进行了定性综合。使用 RoB 2 和 ROBINS-I 工具评估了研究中的偏倚风险。证据的确定性按照 GRADE 方法进行评估。共纳入了 3 项随机对照试验和 15 项前后对比研究。随机对照试验被认为具有较低的偏倚风险,而前后对比研究则被评估为具有较低、严重和关键的偏倚风险。非手术牙周治疗加阿奇霉素、洗必泰和西替利嗪可降低血压,降低血清中 HbA1c、hsCRP、IL-1β 和 TNF-α 的水平。肥胖和牙周炎患者在接受治疗和洗必泰漱口水漱口后,唾液抵抗素水平也有所下降。治疗前后的数据表明,治疗后总胆固醇、低密度脂蛋白、甘油三酯、胰岛素抵抗、C3、TNF-α 的 GCF 水平、chemerin、vaspin、ommentin-1、visfatin、8-OHdG 和牙周病原体计数均有所改善。
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引用次数: 0
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Brazilian oral research
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