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Evaluation of sealing between abutment and inner connection of cone morse dental implant 锥形莫尔斯种植体基台与内连接间密封的评价
Pub Date : 2018-09-17 DOI: 10.11606/ISSN.2357-8041.CLRD.2018.147797
Derivaldo Moura Gois Filho, V. T. Gois-Santos, Ronaldo S. Silva, A. C. Marqueti, A. Cortes, C. L. Trento
Introduction: The adaptation of prostheses fixed over implants involves biomechanical aspects that are directly associated with treatment success. Objective: The aim of this in vitro study was to evaluate the presence of microgaps in the abutment/inner connection interface of cone morse dental implants. Materials and methods: Two groups of implants were analyzed. The first group (n = 16) employed single-manufacturer dental implants and abutments, whereas the second group (n = 16) combined multi-manufacturer materials. The sets were analyzed through scanning electron mi­croscopy, wherein microgaps between the implant connection and the abutment were observed. Results: Group 1 had an average microgap of 5.69 μm (SD ± 8.46 μm). Group 2 had an average microgap of 1.24 μm (SD ± 0.44 μm). A significant difference was found between the two groups (p = 0.002). Conclusion: Within the limitations of this study, results suggest that the group formed by multi-manufacturer implants and abutments (group 2) had smaller microgap values, and, therefore, a higher in vitro adaptation of components. DESCRIPTORS | Dental Implants; Dental Abutments; Scanning Electron Microscopy.
引言:假体固定在植入物上的适应性涉及生物力学方面,与治疗成功直接相关。目的:研究锥体莫尔斯种植体基牙/内连接界面存在微间隙的情况。材料和方法:对两组种植体进行分析。第一组(n = 16)采用单一制造商种植体和基台,而第二组(n = 16)采用多制造商材料组合。通过扫描电镜分析,观察种植体连接与基牙之间的微间隙。结果:1组平均微间隙为5.69 μm (SD±8.46 μm)。2组平均微间隙为1.24 μm (SD±0.44 μm)。两组间差异有统计学意义(p = 0.002)。结论:在本研究的限制范围内,结果表明由多厂家种植体和基台组成的组(2组)具有更小的微间隙值,因此组件的体外适应性更高。|牙种植体;牙髓牙;扫描电子显微镜。
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引用次数: 3
Efeito do clareamento de dentes afetados por tetraciclina: relato de caso clínico 四环素影响牙齿美白的效果:临床病例报告
Pub Date : 2018-08-30 DOI: 10.11606/ISSN.2357-8041.CLRD.2018.146082
A. C. Reis, A. Minto, Carla Larissa Vidal
Introdução: O clareamento de dentes manchados por tetraciclina é desafiador. Este artigo relata um caso clínico de clareamento de dentes manchados em decorrência do uso de tetraciclina, apresentando-se no grau 2. Materiais e mé­todos: O clareamento foi feito com peróxido de hidrogênio 37,5% (Pola Office Plus – SDI Southern Dental Industries, Bayswater, VIC, Austrália), realizado em seis sessões de três aplicações do produto por oito minutos. O paciente foi acompanhado por seis meses. Resultados: Após as aplicações do agente clareador, a técnica e o material selecionado promoveram significativa redução do escurecimento generalizado dos dentes. A área cervical, onde estavam concentra­das as manchas acastanhadas, apresentou evidente clareamento. Conclusão: O clareamento dentário como tratamento de manchas induzidas por tetraciclina apresenta-se como uma opção eficaz e conservadora.
简介:四环素染色牙齿美白是一项具有挑战性的工作。本文报道了一例因使用四环素而导致牙齿漂白的临床病例,出现在2级。材料和方法:漂白采用37.5%双氧水(Pola Office Plus - SDI Southern Dental Industries, Bayswater, VIC, australia),共6次,3次,每次8分钟。患者随访6个月。结果:使用漂白剂后,所选择的技术和材料显著减少了牙齿的一般变暗。颈部区域,棕色斑点集中,有明显的美白。结论:牙齿美白治疗四环素引起的污渍是一种有效和保守的选择。
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引用次数: 0
Avaliação do aumento da estabilidade primária na instalação de implantes dentários com variação da instrumentação por meio do torque de inserção e análise de frequência de ressonância 通过插入扭矩和共振频率分析,评估不同器械对种植体初始稳定性的增加
Pub Date : 2018-08-20 DOI: 10.11606/ISSN.2357-8041.CLRD.2018.144770
Maurício Makoto Koga, Alexander DAlvia Salvoni, T. Wassall
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引用次数: 0
Mucocele eroding maxillary sinus wall as an incidental finding in Cone-beam computed tomography 黏液囊肿侵蚀上颌窦壁是锥束计算机断层扫描的偶然发现
Pub Date : 2018-08-19 DOI: 10.11606/ISSN.2357-8041.CLRD.2018.147253
R. Chen, Felipe Seizo Ioshitaqui Shidomi, L. Munhoz, E. Arita
Mucoceles are locally-expansive, slow-growing benign lesions that are generated from obstructed seromucous glands in the sinonasal mucosa. It has a cystic aspect and leads to sinus opacification. Patients usually present non-specific opacification and, in rare cases, enlarged mucoceles can lead to bone destruction through the compression of sinus surrounding bone walls. This report shows the case of a female patient without any clinical complaints who presented an evident opacification in her left maxillary sinus eroding the sinus wall, which was noticeable by means of panoramic radiograph, aside from maxillary sinus wall thinning and destruction, demonstrated through cone beam computed to­mography examinations. The main diagnosis hypothesis was mucocele, as confirmed by the patient’s otolaryngologist. As the presence of any inflammatory disease in the maxillary sinus contraindicates sinus augmentation, the patient was referred to otorhinolaryngy treatment before implant rehabilitation. DESCRIPTORS | Maxillary Sinus; Mucocele; Cone-beam Computed Tomography; Paranasal Sinus Disease.
粘液囊肿是由鼻窦粘膜粘液腺阻塞引起的局部扩张、生长缓慢的良性病变。它有囊性面并导致窦混浊。患者通常表现为非特异性混浊,在极少数情况下,增大的粘液囊肿可通过压迫骨壁周围的窦而导致骨破坏。本报告报告一女性患者,无任何临床主诉,其左侧上颌窦明显混浊,侵蚀窦壁,在全景x线片上可见,除了上颌窦壁变薄和破坏外,还通过锥束ct检查显示。主要诊断假设为粘液囊肿,经患者耳鼻喉科医生证实。由于上颌窦存在任何炎症性疾病是鼻窦增强术的禁忌,患者在种植康复前接受耳鼻喉治疗。描述:上颌窦;粘液囊肿;锥形束计算机断层扫描;副鼻窦疾病。
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引用次数: 0
Ressonância magnética para avaliação de tumores malignos da cavidade oral: uma revisão da literatura 磁共振成像在口腔恶性肿瘤评估中的应用:文献综述
Pub Date : 2018-07-04 DOI: 10.11606/ISSN.2357-8041.CLRD.2018.142535
Isabela Goulart Gil Choi, Moses Park, Fernando Antonio Reis Laurino, Arthur Rodriguez Gonzalez Côrtes, Emiko Saito Arita
Objetivo: Realizar uma revisão de literatura sobre o desempenho das imagens de ressonância magnética (RM) para avaliação de tumores malignos da cavidade bucal. Métodos: Os bancos de dados MEDLINE (via PubMed) e EMBASE foram utilizados para pesquisar artigos publicados até 2017, restritos a publicações em inglês e em português. As listas de referências de quaisquer artigos em potencial e o banco de dados OpenGrey também foram avaliados para encontrar estudos ou documentos não publicados ou que não foram identificados pela pesquisa eletrônica. O critério de inclusão foi: as pesquisas serem artigos originais, revisões sistemáticas e/ou relatos de casos que discutissem sobre o uso de imagens de RM na avaliação de tumores malignos da cavidade oral. A revisão da literatura foi realizada de acordo com as diretrizes do PRISMA. Resultados: Um total de 25 estudos foram identificados como elegíveis para inclusão nesta revisão e agrupados para discussão. Os tumores malignos abordados nestes estudos foram: carcinoma de células es­camosas, tumores das glândulas salivares, sarcomas orais e maxilofaciais, e melanomas. Conclusão: A RM mostrou-se uma técnica pré-operatória muito precisa para a avaliação de tumores malignos da cavidade bucal.
摘要目的:对磁共振成像(mri)评价口腔恶性肿瘤的性能进行文献综述。方法:使用MEDLINE(通过PubMed)和EMBASE数据库检索截至2017年发表的文章,仅限于英语和葡萄牙语出版物。任何潜在文章的参考列表和OpenGrey数据库也被评估,以找到未发表或未被电子搜索识别的研究或论文。入选标准为:研究为原创文章、系统综述和/或病例报告,讨论mri图像在口腔恶性肿瘤评估中的应用。文献综述是根据PRISMA的指导方针进行的。结果:总共有25项研究被确定为有资格纳入本综述并分组讨论。这些研究涉及的恶性肿瘤有:肿瘤细胞、唾液腺肿瘤、口腔和颌面肉瘤以及黑色素瘤。结论:mri是一种非常准确的口腔恶性肿瘤术前评估技术。
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引用次数: 1
Efficacy of MRI in the differential diagnosis of odontogenic keratocyst: literature review MRI在牙源性角化囊肿鉴别诊断中的作用:文献综述
Pub Date : 2018-06-28 DOI: 10.11606/ISSN.2357-8041.CLRD.2018.142696
E. Ramos, F. Alves, C. Lascala, A. James, E. M. Aoki
According to the World Health Organization (WHO 2017), the odontogenic keratocyst (OKC) is classified as an odon­togenic developmental cyst, with origins from the cellular remnants of the dental lamina. The characteristics of a high rate of cell proliferation, relapse and aggressive growth guide the choice of the type of surgical treatment for the lesion and, consequently, the prognosis. The use of Magnetic Resonance Imaging (MRI) for the differential diagnosis of odon­togenic lesions does not replace anatomopathological examination, but the types of protocols already described illustra­te the influence of these different protocols on the qualitative and quantitative description of keratocysts. We conclude that magnetic resonance imaging is valid as a tool to aid diagnosis of odontogenic lesions, especially for differential diagnosis studies between odontogenic keratocysts and ameloblastomas. 
根据世界卫生组织(WHO 2017),牙源性角化囊肿(OKC)被归类为牙源性发育性囊肿,起源于牙板的细胞残留物。高细胞增殖率,复发和侵袭性生长的特点指导了病变手术治疗类型的选择,从而指导了预后。磁共振成像(MRI)用于牙源性病变的鉴别诊断并不能取代解剖病理学检查,但已经描述的方案类型说明了这些不同方案对角化囊肿定性和定量描述的影响。我们得出结论,磁共振成像是一种有效的工具,以帮助诊断牙源性病变,特别是牙源性角化囊肿和成釉细胞瘤的鉴别诊断研究。
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引用次数: 0
Avaliação da prevalência de células de Haller e sua relação com alterações maxilofaciais 评估哈勒细胞的患病率及其与颌面改变的关系
Pub Date : 2018-06-26 DOI: 10.11606/ISSN.2357-8041.CLRD.2018.134261
Cesar B. Albuquerque, N. R. M. Zambrana, J. R. M. Zambrana, R. A. Ribeiro, Daniela Miranda Richarte de Andrade Salgado, Claudio Costa
Introduction: The Haller Cells are described as aerated ethmoidal cells, located in the inferior margin of the orbit, near the ostia of the maxillary sinuses. The Cone Beam Computed Tomography (CBCT) is widely used in dentistry, allowing acquisition of images of the craniofacial region. Objective: to identify in CBCT exams the Haller´s cell relationship with the following conditions: sinus disease, bony nasal septum deviation, endodontic treatment and periapical lesions. Materials and methods: 99 CBCT exams were used, from which 51 were included in the research criteria. The images were analyzed in the Xelis Dental® software to identify the presence or absence of the Haller Cell, as well as the relationship with the mentioned conditions. Results: Among the 51 CFCT exams evaluated, 35.3% presented Haller´s Cell on the right side and 23.5% on the left side. Whereas the relationship of the Haller Cells with one or more alterations mentioned here, on the right side we had it in 72% of the cases, while on the left side such relationship was present in 75% of the cases. Conclusion: CBCT exams that present the infraorbital margin allow to verify the presence or absence of the Haller Cell. In this sample, we verified a greater presence of endodontic cases, bony nasal septum deviation and sinus disease cases in individuals who presented Haller Cells.
简介:哈勒细胞是一种充气的筛状细胞,位于眶下缘,靠近上颌窦口。锥形束计算机断层扫描(CBCT)广泛应用于牙科,允许获取颅面区域的图像。目的:探讨CBCT检查中Haller’s细胞与以下情况的关系:鼻窦疾病、骨性鼻中隔偏曲、根管治疗和根尖周病变。材料和方法:使用了99例CBCT检查,其中51例纳入研究标准。在Xelis Dental®软件中分析图像,以确定Haller细胞的存在或不存在,以及与上述条件的关系。结果:51例CFCT检查中,右侧出现哈勒细胞的占35.3%,左侧出现的占23.5%。而这里提到的哈勒细胞与一种或多种改变的关系,在右侧的72%的病例中有这种关系,而在左侧的75%的病例中有这种关系。结论:显示眶下缘的CBCT检查可以证实哈勒细胞的存在与否。在这个样本中,我们证实了更大的存在根管病例,骨性鼻中隔偏曲和鼻窦疾病病例的个体谁提出了哈勒细胞。
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引用次数: 0
Knowledge and attitudes of dentists regarding the treatment of renal transplant patients 牙医对肾移植患者治疗的知识和态度
Pub Date : 2018-06-26 DOI: 10.11606/ISSN.2357-8041.CLRD.2018.143650
Rubens Caliento, P. P. Shibutani, A. O. Souza, M. Gallottini
Objectives: the objective of this study was to assess the knowledge and attitude of dentists towards the dental treatment of renal transplant patients through questionnaires. Methods: a total of 416 dentists were interviewed and respon­ded 10 multiple-choice questions. Results: most participants (214/416; 51.4%) felt uncomfortable extracting teeth in renal transplant patients. The great majority (354/416, 85%) would prescribe prophylactic antibiotics before simple dental extraction, whereas 43% would prescribe antibiotics, even before non-invasive procedures. Conclusions: our data showed that the interviewed dentists are unfamiliar with the management of renal transplant patients and most of them would prescribe prophylactic antibiotics inappropriately, despite the inexistence of scientific evidence supporting this practice.
目的:本研究通过问卷调查的方式了解牙医对肾移植患者牙科治疗的知识和态度。方法:对416名牙科医生进行访谈,回答10道选择题。结果:大多数参与者(214/416;51.4%)在肾移植患者拔牙时感觉不舒服。绝大多数人(354/416,85%)在简单拔牙前会开预防性抗生素,而43%的人甚至在非侵入性拔牙前也会开抗生素。结论:我们的数据显示,受访牙医不熟悉肾移植患者的管理,尽管没有科学证据支持这种做法,但大多数牙医会不适当地开具预防性抗生素。
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引用次数: 1
Magnetic resonance imaging changes in pediatric temporomandibular joint: literature review 儿童颞下颌关节的磁共振成像变化:文献综述
Pub Date : 2018-04-12 DOI: 10.11606/ISSN.2357-8041.CLRD.2018.142636
G. Montesinos, R. Agudo, Andre de Oliveira, A. James, J. X. Oliveira, J. P. Araújo
Magnetic resonance imaging is effective to diagnose some diseases that affect the temporomandibular joint (TMJ) of children. The images allow the detection of early stages of juvenile idiopathic arthritis, cases of joint ankylosis and is currently considered the most reliable exam for an objective and noninvasive assessment of intracapsular soft tissues. The objective of this literature review was to assess some of the temporomandibular joint changes in children using magnetic resonance imaging (MRI). The assessment of TMJs of children performed through MRI make the diagnosis more accurate and objective. Detecting alterations during the early stages of juvenile idiopathic arthritis using 3T MRI devices is possible utilizing contrast tools, which as a result, provides better prognosis and treatment.
磁共振成像对儿童颞下颌关节(TMJ)病变的诊断是有效的。这些图像可以检测幼年特发性关节炎的早期阶段,关节强直的病例,目前被认为是对囊内软组织进行客观和无创评估的最可靠的检查。本文献综述的目的是利用磁共振成像(MRI)评估儿童颞下颌关节的一些变化。MRI对儿童颞下颌关节的评估使诊断更加准确和客观。利用对比工具使用3T MRI设备检测幼年特发性关节炎早期阶段的病变是可能的,因此可以提供更好的预后和治疗。
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引用次数: 0
Aesthetic and functional rehabilitation of anterior teeth after trauma: a case report 前牙外伤后美观与功能康复1例
Pub Date : 2018-04-12 DOI: 10.11606/ISSN.2357-8041.CLRD.2017.132567
K. Scudine, K. Moreira, M. Cardoso, S. Araújo, R. Puppin-Rontani, E. Santos
Traumatic dental injuries are common clinical problems during childhood, and may have complex etiologies causing physical and physiological impairment. The aim of this study was to report the management of a severe traumatic dental injury in an 8-year-old female patient, victim of a motorcycle accident, who was taken to a pediatric dentistry clinic three months after the accident. After clinical and radiografic examination, we observed the avulsion of the permanent maxillary central incisors and of the permanent left lateral incisor, with considerable lingual interposition, interfering in speech and swallowing. The patient showed low risk of caries and good behavior during the appointments. However, she demonstrated to be embarrassed to smile. Besides the preventive treatment concerning caries, the treatment plan included immediate care and subsequent monitoring of the psychosocial reestablishment. For this purpose, an acrylic partial denture was made in order to replace the missing anterior teeth, maintaining the characteristics of the mixed dentition and preserving the aesthetics and the function. Follow-up appointments were performed one, three and six months after the first visit, aiming to monitor the adaptation of the prosthesis, as well as the growth and development of the child’s dentition. Thus, the aesthetic and functional rehabilitation was achieved regarding the patient’s satisfaction, enabling immediate social reinsertion.
创伤性牙损伤是儿童时期常见的临床问题,可能具有复杂的病因,导致身体和生理损伤。本研究的目的是报告一名8岁女性患者的严重创伤性牙齿损伤的处理,她是摩托车事故的受害者,事故发生三个月后被送往儿科牙科诊所。经临床和影像学检查,我们观察到上颌恒中切牙和左恒侧切牙撕脱,有相当大的舌介入,干扰言语和吞咽。患者在就诊期间表现良好,患龋风险低。然而,她表现出不好意思笑。除了对龋齿进行预防性治疗外,治疗计划还包括立即护理和随后的社会心理重建监测。在保留混合牙列特征的同时,保留美观性和功能,制作丙烯酸局部义齿来替代缺失的前牙。在第一次就诊后1个月、3个月和6个月进行随访,目的是监测义齿的适应性,以及儿童牙列的生长和发育。因此,美学和功能的康复是在患者满意的情况下实现的,可以立即重新融入社会。
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引用次数: 0
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Clinical and Laboratorial Research in Dentistry
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