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Shear Bond Strength and Failure Mode of Different Dental Adhesive Systems 不同牙科胶粘剂体系的剪切粘接强度及破坏模式
Pub Date : 2019-04-04 DOI: 10.22452/ADUM.VOL26NO1
N. A. Yahya, Azizah Murtuzah Shekh
The study aimed to evaluate the shear bond strength (SBS) and to analyse the failure mode at the resin-dentine interface of different dental adhesive systems. A total of 75 sound premolar teeth were selected and randomly assigned into five different adhesive groups (n=15): OptiBond Solo (OBS, total-etch), OptiBond Versa (OBV, two-bottles, self-etch), Adhe SE Ivoclar (ADHE, two-bottles, self-etch), G-Bond (GB, one-bottle, self-etch), and OptiBond All in One (OBO, one-bottle, self-etch). The occlusal surface of each tooth was flattened and composite resin cylinder (4x2 mm) was built up on the flat dentine surface using a custom made mould. The specimens were then subjected to 500 thermal cycles between 5 °C and 55 °C and dwell time of 20s. The SBS test was conducted using a universal testing machine at a crosshead speed of 0.5 mm/min. Data were analyzed using one-way ANOVA and Dunnett T3 Test. Failure mode was determined as adhesive, cohesive or mixed mode using a stereomicroscope and the data were analyzed using Fisher's exact test. The total-etch (OBS) had significantly higher value of SBS than the two self-etch (ADHE and GB) adhesive systems. Within the self-etch systems, OBV showed significantly higher SBS value compared to ADHE and GB. There were no statistically significant differences between types of failure mode (p > 0.05) and adhesive group. It can be concluded that the different compositions in the self-etch adhesive materials may contribute to the different SBS value. The failure modes detected within all tested groups did not show clinically important differences.
本研究旨在评价不同牙胶粘剂体系的剪切粘接强度(SBS),并分析其在树脂-牙本质界面的破坏模式。选择75颗健康的前磨牙,随机分为5组(n=15): OptiBond Solo (OBS,全蚀刻)、OptiBond Versa (OBV,两瓶,自蚀刻)、Adhe SE Ivoclar (Adhe,两瓶,自蚀刻)、G-Bond (GB,一瓶,自蚀刻)和OptiBond All in One (OBO,一瓶,自蚀刻)。将每颗牙的咬合面压平,并使用定制的模具在平整的牙本质表面上构建复合树脂圆柱体(4x2 mm)。然后,试样在5°C至55°C之间进行500次热循环,停留时间为20s。SBS试验采用万能试验机,十字速度为0.5 mm/min。数据分析采用单因素方差分析和Dunnett T3检验。利用体视显微镜确定其破坏模式为粘接、内聚或混合模式,并采用Fisher精确检验对数据进行分析。全蚀刻(OBS)体系的SBS值明显高于自蚀刻(ADHE)和自蚀刻(GB)体系。在自蚀刻体系中,OBV的SBS值明显高于ADHE和GB。两组失效模式类型差异无统计学意义(p < 0.05)。结果表明,自蚀刻胶材料中不同的成分可能导致SBS值的不同。在所有测试组中检测到的失效模式没有显示出临床上重要的差异。
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引用次数: 1
Assessment of clinical and radiographic status of crowned teeth 冠牙临床及影像学状况评估
Pub Date : 2019-04-04 DOI: 10.22452/ADUM.VOL26NO2
Nurul Farahah Bahari, Nur Iffah Izzaty Jamal, J. John
This cross sectional study investigated the clinical and radiographic status of crowned teeth with and without root canal treatment.  The study used secondary data from records of patients who received crown treatment at the Faculty of Dentistry, University of Malaya before 2015 and walk-in patients attending the primary care clinic between July - December 2016. The inclusion criterion was crown fitted for more than 12 months. Once identified, the patients were assessed for clinical and radiographic status. Data were entered into and analysed using SPSS Version 20 software. A total of 66 crowns [35 root canal treated (RCT) and 31 non-root canal treated (n-RCT)] were identified. Chi-square test was carried out to determine the health of crowned teeth and for its longevity in the oral cavity. There were 43 crowns (46.5% RCT; 53.5% n-RCT) with plaque accumulation, 15 (66.7% RCT; 33.3% n-RCT) with gingival swelling/recession, 17 (46.5% RCT; 53.5% n-RCT) with widening of the periodontal ligament, 13 (53.8% RCT; 46.2% n-RCT) with bone loss and 5 (60% RCT; 40% n-RCT) crowns with periapical lesion. There was no statistically significant difference except for poorer alveolar bone condition for crowns that have been in the mouth for >10 years. Based on the study, no significant adverse pulpal involvement between crown with RCT and crown without RCT was observed.
本横断面研究调查了冠牙有和没有根管治疗的临床和影像学状况。该研究使用了2015年之前在马来亚大学牙科学院接受牙冠治疗的患者记录和2016年7月至12月期间在初级保健诊所就诊的免预约患者的二手数据。纳入标准为冠拟合12个月以上。一旦确诊,评估患者的临床和放射学状况。使用SPSS Version 20软件录入数据并进行分析。共鉴定66个冠[35个根管治疗组(RCT)和31个非根管治疗组(n-RCT)]。用卡方检验确定冠牙的健康状况及其在口腔中的寿命。共43个冠(RCT为46.5%);53.5% n-RCT), 15例(66.7% RCT;33.3% n-RCT), 17例(46.5% RCT;53.5% n-RCT)伴牙周韧带增宽,13例(53.8% RCT;46.2% n-RCT)和5 (60% RCT;40% n-RCT)有根尖周病变的冠。除了牙冠在口腔中放置10年以上的患者牙槽骨状况较差外,两组间无统计学差异。根据研究结果,采用RCT的冠与不采用RCT的冠之间没有观察到明显的不良牙髓部受累。
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引用次数: 0
Aesthetic Rehabilitation with Nano- Ceramic Composite Material - Case Reports 纳米陶瓷复合材料的美学修复-个案报告
Pub Date : 2018-12-31 DOI: 10.22452/ADUM.VOL25NO2.6
Noor Hayati Azami, N. H. M. Noor, W. Ngan, J. Then, Yeong Chee Teoh
Aesthetic or cosmetic dentistry is one of the main areas of dental practice. Increasing demands of patients for aesthetics has resulted in the development of several techniques for restoring the anterior teeth. Composite resin restorations have become an integral part of contemporary restorative dentistry and can be called “star of minimal invasion” due to its conservative concepts. The direct composite veneering allows restoring the tooth in a natural way and preservation of sound tooth structure when compared to indirect restorations. Before placement of direct composite veneers, a proper diagnosis, available treatment options, cost of treatment, patient’s expectations and duration of treatment should be taken into consideration. This article presents three case reports of aesthetic rehabilitation of anterior teeth using direct composite with satisfactory outcome that mimic the natural dentition.
美容或美容牙科是牙科实践的主要领域之一。患者对美观的需求不断增加,导致了几种修复前牙的技术的发展。复合树脂修复体已成为当代修复牙科的一个组成部分,因其保守的概念而被称为“微创之星”。与间接修复相比,直接复合贴面可以以自然的方式修复牙齿,并保持良好的牙齿结构。在放置直接复合贴面之前,应考虑正确的诊断、可用的治疗方案、治疗成本、患者的期望和治疗持续时间。本文介绍了三例采用模拟自然牙列的直接复合材料进行前牙美学康复的病例报告,结果令人满意。
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引用次数: 0
MySOMOI: An Interdisciplinary Platform that Promotes wholesome Oral Health MySOMOI:促进口腔健康的跨学科平台
Pub Date : 2018-12-31 DOI: 10.22452/ADUM.VOL25NO2.2
Mohd Hafiz Arzmi, Intan Azura Shahdan
As a customary practice, oral health promotion is often carried out by dentists themselves, whose practice are regulated by Act 51, Dental Act 1971 an act that ensures the safety of the patients in Malaysia. However, non-dentists who are working towards promoting good oral health practice are almost scarce or even nonexistent at the national level. Therefore, the idea to have an interdisciplinary platform for Oral Microbiologists and Oral Immunologists was mooted and eventually turned into the formation of the Malaysian Society of Oral Microbiologists and Oral Immunologists (MySOMOI) (https://mysomoi.org).
作为一种习惯做法,口腔健康宣传通常由牙医自己进行,其做法受到《1971年牙科法》第51号法令的监管,该法令确保了马来西亚患者的安全。然而,在国家一级,致力于促进良好口腔健康实践的非牙医几乎很少,甚至根本不存在。因此,为口腔微生物学家和口腔免疫学家建立跨学科平台的想法被提出,并最终形成了马来西亚口腔微生物学家与口腔免疫学家协会(MySOMOI)(https://mysomoi.org)。
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引用次数: 0
Autism Spectrum Disorder: Patients’ Oral Health Behaviors and Barriers in Oral Care from Parents’ Perspectives 自闭症谱系障碍患者口腔健康行为与家长口腔护理障碍
Pub Date : 2018-12-31 DOI: 10.22452/ADUM.VOL25NO2.5
Maryani Mohamed Rohani, Nur Fatin Baharozaman, Nur Syadiyah Khalid, Norintan Ab-Murat
To assess the oral health behaviors of children with Autism Spectrum Disorder (ASD) and explore attitudes and barriers in providing oral care by their parents. A cross-sectional, mixed method study design, which comprised of quantitative and qualitative sections was conducted. The quantitative part assessed the oral health behavior through a parent-proxy report questionnaire whilst the qualitative part assessed parents’ overall perspective on maintenance of oral health in children with ASD through an in-depth interview using semi-structured questions. All children below the age of 16 who have been clinically diagnosed with ASD and registered at the Pediatric Dental Clinic were included. The sample consisted of twenty children with ASD. Most of the sample were male and between 5-8 years old. Majority had good oral health behaviors but some exhibited self-injurious behaviors that may affect oral health. Severe characteristics of ASD, co-morbid conditions and incompetent health professionals were reported as barriers in oral care by parents of these children. Despite having good oral health behaviors, several barriers and challenges were expressed by these parents with ASD when providing home oral care or bringing them for dental appointment. Continuous support for parents with ASD child by dental professionals is essential to help overcome the real challenges and barriers in providing oral care among these parents.
目的评估自闭症谱系障碍(ASD)儿童的口腔健康行为,探讨家长在提供口腔护理方面的态度和障碍。采用横断面混合方法设计研究,包括定量和定性两部分。定量部分通过家长代理报告问卷评估口腔健康行为,定性部分通过半结构化问题深度访谈评估家长对ASD儿童口腔健康维护的总体看法。所有16岁以下在儿科牙科诊所登记并被临床诊断为ASD的儿童都被纳入研究范围。样本包括20名自闭症儿童。大多数样本是男性,年龄在5-8岁之间。多数患者口腔健康行为良好,但部分患者存在影响口腔健康的自残行为。ASD的严重特征、合并症和不称职的卫生专业人员被报道为这些儿童的父母进行口腔护理的障碍。尽管有良好的口腔健康行为,但这些自闭症家长在提供家庭口腔护理或带他们去看牙医时表达了一些障碍和挑战。牙科专业人员对自闭症儿童家长的持续支持对于帮助这些家长克服提供口腔护理的真正挑战和障碍至关重要。
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引用次数: 4
Good Occlusal Practice in Restorative Dentistry 修复牙科的良好咬合实践
Pub Date : 2018-12-31 DOI: 10.22452/ADUM.VOL25NO2.3
H. Devlin
The masticatory (or stomatognathic) system is generally considered to be made up of the teeth, the periodontal tissues, and the articulatory system. Within the articulatory system, one can imagine the temporomandibular joints as the hinges, the masticatory muscles as the motors and the dental occlusion as the contacts. Dentists manage their patients’ occlusion during routine restorative dental procedures because the occlusal surfaces of the teeth are usually involved in the provision of restorations [2]. But dentists should avoid unplanned occlusal change because it may lead to an iatrogenic problem or a restorative failure [3].
咀嚼系统通常被认为是由牙齿、牙周组织和关节系统组成的。在关节系统中,人们可以想象颞下颌关节是铰链,咀嚼肌是马达,咬合是触点。牙科医生在常规修复性牙科手术中管理患者的咬合,因为牙齿的咬合表面通常涉及修复[2]。但牙医应该避免意外的咬合改变,因为这可能会导致医源性问题或恢复性失败[3]。
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引用次数: 0
A Narrative Review of Different Types and Processing Methods of Acrylic Denture Base Material 丙烯酸义齿基托材料不同类型及加工方法的叙述性评述
Pub Date : 2018-12-31 DOI: 10.22452/ADUM.VOL25NO2.7
Lee Wei May, L. Seong
Acrylic resin is commonly used to fabricate removable prostheses due to its adequate physical, mechanical properties and cost effectiveness. There has been continuous development of the materials to improve their properties and to widen their applications in different clinical settings. This study aimed to provide a historical development of the acrylic resin and elaborate on the properties of different types and the processing methods of acrylic resins used to fabricate denture base which are commercially available in the market. This would help dental clinicians to choose the best material of choice in the market. The authors have summarized the history, development and classification of different types of acrylic resins used in fabricating dentures and processing methods based on published research available on this topic using published materials available in the Dental Library, University of Malaya and the database (Science Direct, PubMed). Every type of acrylic denture base material has its pros and cons. Therefore, careful selection of the material and processing method is crucial to ensure patients are receiving the best outcome in prosthodontic treatment hence upholding the patients’ best interest and improving their quality of life.
丙烯酸树脂由于其足够的物理、机械性能和成本效益,通常用于制造可移除假体。人们不断开发这种材料,以改善其性能并扩大其在不同临床环境中的应用。本研究旨在提供丙烯酸树脂的历史发展,并详细说明市场上可买到的用于制造义齿基托的丙烯酸树脂的不同类型的性能和加工方法。这将有助于牙科临床医生选择市场上最好的材料。作者总结了用于制造假牙的不同类型丙烯酸树脂的历史、发展和分类,以及基于已发表的关于该主题的研究,使用了马来亚大学牙科图书馆和数据库(Science Direct,PubMed)中的已发表材料。每种丙烯酸义齿基托材料都有其优缺点。因此,仔细选择材料和加工方法对于确保患者在口腔修复治疗中获得最佳结果至关重要,从而维护患者的最大利益并提高他们的生活质量。
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引用次数: 3
Evaluation of Carbamazepine Pharmacotherapy In Patients With Trigeminal Neuralgia 卡马西平治疗三叉神经痛的疗效评价
Pub Date : 2016-12-30 DOI: 10.22452/ADUM.VOL23NO2.3
Syed Othman Sni, M. Na, T. G. Kallarakkal
In this study we aimed to determine the adverse effects and pain outcome following carbamazepine pharmacotherapy to manage patients with classical trigeminal neuralgia. The study was carried out on patients diagnosed with classical trigeminal neuralgia at the Faculty of Dentistry, University of Malaya. Medical records of patients diagnosed with trigeminal neuralgia over a period of 11 years from April, 2003 to April, 2014 were reviewed. A total of 49 patients who fulfilled the inclusion criteria were included in the study. Demographic details, clinical features and blood test reports of the patients were recorded from the patient’s clinical files. Subjects included in the study were administered the Faces Pain Rating Scale (FPS) and Numeric Pain Rating scale (NRS) to measure the pain outcome retrospectively. Analysis and interpretation of results was carried out using SPSS. Hepatic adverse effects were more commonly seen in our patients (n=39) followed by haematological (n=27), renal (n=23) and non-specific adverse effects (n=22). However, there was no significant association between the observed side effects and carbamazepine pharmacotherapy. Analysis of our data using Pearson Chi Square test, showed no significant correlation between gender, ethnicity and age of the patients with adverse effects. 9 out of the 49 subjects included in the study were administered the FOS and the NRS. Pain perception after treatment was significantly decreased (p-0.007) in comparison to pain perception before commencement of therapy with carbamazepine in the selected group of patients. Even though pain perception decreased in the selected patients, the data is insufficient to state the efficacy of the treatment as none of the patients reported a complete relief from their pain. The results of our study showed that there were no significant haematological, hepatic, renal, and non-specific adverse effects associated with the use of carbamazepine. The efficacy of this drug in the treatment of trigeminal neuralgia was proven to be satisfactory. It may be concluded that carbamazepine could be considered as the drug of choice in the treatment of trigeminal neuralgia.
在这项研究中,我们旨在确定卡马西平药物治疗后治疗经典三叉神经痛患者的不良反应和疼痛结局。这项研究是在马来亚大学牙科学院诊断为经典三叉神经痛的患者中进行的。回顾2003年4月至2014年4月11年间诊断为三叉神经痛患者的医疗记录。49例符合纳入标准的患者被纳入研究。从患者的临床档案中记录患者的人口学细节、临床特征和血液检查报告。研究对象采用面部疼痛评定量表(FPS)和数字疼痛评定量表(NRS)对疼痛结果进行回顾性测量。采用SPSS软件对结果进行分析和解释。肝脏不良反应在我们的患者中更为常见(n=39),其次是血液学(n=27)、肾脏(n=23)和非特异性不良反应(n=22)。然而,观察到的副作用与卡马西平药物治疗之间没有显著的关联。使用皮尔逊卡方检验对我们的数据进行分析,发现不良反应患者的性别、种族和年龄之间没有显著的相关性。49名受试者中有9人接受了FOS和NRS测试。与卡马西平治疗前相比,治疗后的痛觉明显降低(p-0.007)。尽管所选患者的疼痛感觉有所下降,但数据不足以说明治疗的有效性,因为没有患者报告疼痛完全缓解。我们的研究结果显示,卡马西平的使用没有显著的血液学、肝脏、肾脏和非特异性不良反应。该药治疗三叉神经痛的疗效令人满意。由此可见,卡马西平可作为治疗三叉神经痛的首选药物。
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引用次数: 0
Periodontal supportive care: aesthetic and functional restoration with acrylic gingival veneer 牙周支持护理:丙烯牙龈贴面的美观和功能修复
Pub Date : 2016-12-30 DOI: 10.22452/ADUM.VOL23NO2.5
L. Seong
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引用次数: 0
Solitary parotid duct sialolith in a patient with Sjörgren’s syndrome: Report of a case Sjörgren综合征患者孤立性腮腺管涎石1例报告
Pub Date : 2016-12-30 DOI: 10.22452/ADUM.VOL23NO2.4
Wang Wn, S. Hassan, F. Rahman, Burhanuddin Na, Goh Yc, K. Kadir, C. Siar
Sjorgren’s syndrome is an uncommon chronic autoimmune disorder that affects exocrine glands. Sialolithiasis is an obstructive salivary gland disease which is also uncommon in the parotid salivary gland. The existing literature has documented the occurrence of multiple calcifications within the parenchyma of the parotid glands in patients with Sjorgren’s syndrome. This report describes the first case of right parotid duct solitary sialolith formation in a 64 year old female patient with Sjorgren’s syndrome. Whether the salivary stone encountered in this case represents an oral manifestation of Sjorgren’s syndrome or is just a co-incidental finding was discussed.
干燥综合征是一种罕见的慢性自身免疫性疾病,影响外分泌腺。涎石症是一种梗阻性唾液腺疾病,在腮腺唾液腺也很少见。现有文献记载了干燥综合征患者腮腺实质内多发钙化的发生。本文报告一例64岁女性干燥综合征患者右侧腮腺导管孤立性涎石形成。我们讨论了本病例中所遇到的唾液结石是否代表了干燥综合征的口腔表现,还是仅仅是一个偶然的发现。
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引用次数: 0
期刊
Annals of dentistry
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