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Extensive Type III Unicystic Ameloblastoma - A Case Report with Conservative Management 广泛的III型单胞性成釉细胞瘤-保守治疗1例报告
Pub Date : 2016-06-30 DOI: 10.4172/2247-2452.1000902
A. Chaudhry, M. Manjunath, K. Sridevi, Ishita Gupta, Renu Tanward
Unicystic ameloblastoma is a distinct type of ameloblastoma that resembles clinically and radiographically a dentigerous cyst but on three dimensional evaluation shows tumorous behavior and histopathologically shows ameloblastic epithelium. As compared to conventional ameloblastoma it shows a low recurrence rate after conservative treatment. We report a case of extensive unicystic ameloblastoma of mandible in young male patient that showed tumorous characteristics on computed tomography (CT) and was treated conservatively by decompression. CT follow up after 3 months showed significant bone formation. The lesion was then enucleated. Follow up at 8 months showed tremendous bone healing.
单囊性成釉细胞瘤是一种独特类型的成釉细胞瘤,临床和放射学上类似于牙性囊肿,但三维评估显示肿瘤行为,组织病理学上显示成釉上皮。与传统的成釉细胞瘤相比,保守治疗后复发率低。我们报告一位年轻男性病患,在电脑断层扫描(CT)上表现出肿瘤特征,并接受保守的减压治疗。3个月后CT随访显示骨形成明显。然后将病变去核。随访8个月,骨愈合明显。
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引用次数: 0
Cytotoxic Effect of Astringent Agents on Human Gingival Fibroblasts 收敛剂对人牙龈成纤维细胞的细胞毒性作用
Pub Date : 2016-06-30 DOI: 10.4172/2247-2452.1000897
A. Khaledi, M. Farzin, A. Fathi, Soheil Pardis
Aims: During fixed prosthesis fabrication, gingival margin retraction is an important step before making an impression. Astringent agents should provide sufficient free gingival margin displacement, and must be free of systemic and local harmful adverse effects. This study aimed to determine the biocompatibility of three different astringent agents on human gingival fibroblast. Materials and Methods: In order to evaluate cytotoxicity of 25% aluminum chloride, 25% aluminum sulphate and 20% ferric sulphate, in 24 well culture plates containing human gingival fibroblasts, RPMI media, antibiotic and 10% fetal bovine serum was added. Cell cultures were incubated in a CO2 incubator. After 1, 5 and 15 minutes, optical absorbance of each plate was determined by MTT assay. Cytotoxicity of each astringent at 1, 5 and 15 minutes were compared by using Student t-test. A p-value<0.05 was considered as significant level. Results: The cytotoxicity of aluminum chloride at all time periods was significantly greater than other two astringents (p<0.05). At 1 minute application, cytotoxicity of ferric sulphate was significantly lower than aluminum sulphate (p=0.01). At 5 minutes, the effect of ferric sulphate and aluminum sulphate was similar and at 15 minutes, aluminum sulphate had significantly lower cytotoxicity compared to ferric sulphate (p=0.043). Conclusions: At all tested time periods, 25% aluminum chloride exhibited greater cytotoxicity than aluminum sulphate and ferric sulphate. Compared to aluminum sulphate, the cytotoxicity of ferric sulphate was lower at 1 minute, similar at 5 minutes, and greater at 15 minutes.
目的:在固定假体制作过程中,龈缘内收是制作印模前的重要步骤。收敛剂应提供足够的游离龈缘位移,并且必须无全身和局部有害不良反应。本研究旨在测定三种不同收敛剂对人牙龈成纤维细胞的生物相容性。材料与方法:在含人牙龈成纤维细胞的24孔培养板中,分别添加RPMI培养基、抗生素和10%胎牛血清,评价25%氯化铝、25%硫酸铝和20%硫酸铁的细胞毒性。细胞培养物在CO2培养箱中培养。1、5、15分钟后,用MTT法测定各组板的吸光度。采用学生t检验比较各收敛剂在1、5、15分钟的细胞毒性。p值<0.05为显著水平。结果:氯化铝在各时间段的细胞毒性均显著大于其他两种收敛剂(p<0.05)。施用1分钟时,硫酸铁的细胞毒性显著低于硫酸铝(p=0.01)。5分钟时,硫酸铁和硫酸铝的作用相似,15分钟时,硫酸铝的细胞毒性明显低于硫酸铁(p=0.043)。结论:在所有测试时间内,25%氯化铝比硫酸铝和硫酸铁表现出更大的细胞毒性。与硫酸铝相比,硫酸铁的细胞毒性在1分钟时较低,在5分钟时相似,在15分钟时较大。
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引用次数: 1
Assessing the Dental Treatment Needs of Female Patients at the DentalCollege, Riyadh, Saudi Arabia 评估沙特阿拉伯利雅得牙科学院女性患者的牙科治疗需求
Pub Date : 2016-06-30 DOI: 10.4172/2247-2452.1000896
E. Alhamdan
Aims: To assess the treatment need among Saudi female patients attending for dental treatment at the College of Dentistry, King Saud University, Riyadh. Methods: The sample included all female patients referred to the Comprehensive Dental Course for treatment by 5th year students at the College of Dentistry, King Saud University during the academic year 2014-2015. Patients were clinically examined and different dental treatment needs was assessed and documented. Results: A total of 264 patients were examined and 81 were referred mostly to post graduate and undergraduate courses the reason for referral was significantly because of either simplicity or difficulty of the case. Almost 76% of the patients needed restorative treatment, 74.5% needed periodontal treatment, and 71% needed endodontic treatment. Seventy percent of the patients needed fixed prosthetic treatment while 52% of the patients needed removable partial dentures; in addition more than half of the patients (57%) needed teeth extraction. Caries was found to be the main reason for extraction, restorative and endodontic treatments. In Fixed prosthodontic treatment need, crowns were found to be more needed than fixed partial dentures however among removable dentures, conventional partial dentures was the most needed. Conclusion: The study revealed a considerable amount of treatment need, and as caries was found to be the main reason for extraction, restorative and endodontic treatments; efforts should be directed towards more dental educational programs. This can be done through community services programs conducted by the dental school, the main target of these services should be improving oral hygiene and implementing preventive measures to reduce dental caries and periodontal disease.
目的:评估在利雅得沙特国王大学牙科学院接受牙科治疗的沙特女性患者的治疗需求。方法:样本包括2014-2015学年沙特国王大学牙科学院五年级学生在综合牙科课程中接受治疗的所有女性患者。对患者进行临床检查,并对不同的牙科治疗需求进行评估和记录。结果:共检查264例患者,转诊81例,以研究生和本科生居多,转诊原因主要是病例简单或困难。近76%的患者需要修复治疗,74.5%的患者需要牙周治疗,71%的患者需要牙髓治疗。70%的患者需要固定义齿,52%的患者需要可摘局部义齿;此外,超过一半(57%)的患者需要拔牙。龋齿是拔牙、修复和根管治疗的主要原因。在固定义齿治疗需求中,冠比固定局部义齿需要更多,而在活动义齿中,常规局部义齿需要最多。结论:本研究显示了大量的治疗需求,龋齿是拔牙、修复和根管治疗的主要原因;努力应该指向更多的牙科教育项目。这可以通过牙科学校开展的社区服务项目来实现,这些服务的主要目标应该是改善口腔卫生和实施预防措施,以减少龋齿和牙周病。
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引用次数: 1
The Effect of Pattern Materials on the Marginal Gap of Metal CopingsFabricated On Titanium Implant Abutments 模式材料对钛基牙金属涂层边缘间隙的影响
Pub Date : 2016-06-30 DOI: 10.4172/2247-2452.1000901
A. Khaledi, M. Farzin, A. Fathi, Soheil Pardis
Aims: This study was aimed to compare the effect of three different pattern materials on the vertical marginal discrepancy of Nickel-Chromium copings fabricated on titanium implant abutments. Methods: A titanium implant abutment was used to receive 30 Nickel-Chromium copings. The copings were constructed using pattern wax (group 1), acrylic pattern resin (group 2), and lightcured pattern resin (group 3). The marginal gap of the Nickel-Chromium copings was measured at 4 points on the abutmentimplant assembly by using a digital microscope. One-way ANOVA and post hoc tests were adopted for statistical analysis (α=0.05). Results: The mean marginal gap values of Nickel-Chromium copings fabricated from pattern wax, acrylic pattern resin, and lightcured pattern resin were 34.00, 31.78 and 25.87 μm, respectively. There was a statistically significant difference between groups 1 and 3 (p=0.02), whilst the difference between groups 2 and 3 and between groups 1 and 2 was not statistically significant (p>0.05). Conclusions: The marginal gaps of the copings, fabricated from tested pattern materials, were within the clinically acceptable range. Nevertheless, light-cure pattern resin had a better vertical marginal fit than acrylic pattern resin and pattern wax.
目的:比较三种不同模式材料对钛基牙镍铬镀层垂直边缘差的影响。方法:采用钛种植基台种植30个镍铬镀层。采用图案蜡(1组)、丙烯酸图案树脂(2组)和光固化图案树脂(3组)构建覆膜。使用数码显微镜在基牙种植体组件上的4个点测量镍铬覆膜的边缘间隙。采用单因素方差分析和事后检验进行统计学分析(α=0.05)。结果:纹蜡、丙烯酸纹树脂和光固化纹树脂制备的镍铬镀层的平均边际间隙值分别为34.00、31.78和25.87 μm。1组与3组比较差异有统计学意义(p=0.02), 2组与3组、1组与2组比较差异无统计学意义(p>0.05)。结论:经测试的模板材料制作的覆膜边缘间隙在临床可接受范围内。光固化型树脂比丙烯酸型树脂和蜡型树脂具有更好的垂直边缘贴合。
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引用次数: 0
The Role of Orthognathic Surgery in Management of Gingival Fibromatosis, Technical Note 正颌手术在牙龈纤维瘤病治疗中的作用,技术笔记
Pub Date : 2016-06-30 DOI: 10.4172/2247-2452.1000890
A. Rahpeyma, S. Khajehahmadi
Sever gingival fibromatosis may cause bimaxillary dentoalveolar protrusion. In these patients, multidisciplinary approaches by collaboration within several specialists, orthodontics, periodontics, and oral & maxillofacial surgeons is mandatory to obtain a good result. Orthognathic surgery can be used to correct dentofacial deformity that has positive effects on facial esthetic in some selected cases of gingival fibromatosis. This article recommends solutions for the problems during orthognathic surgeries that are unique to these patients.
严重的牙龈纤维瘤病可引起双颌牙槽突。在这些患者中,由几位专家、正畸学、牙周学和口腔颌面外科医生合作的多学科方法是获得良好结果的必要条件。在一些选择的牙龈纤维瘤病病例中,正颌手术可用于矫正牙面畸形,对面部美观有积极的影响。本文建议解决这些患者在正颌手术中遇到的问题。
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引用次数: 0
A Survey of Differences in Attitudes toward Dental Implants between Sexes in Japan 日本两性对种植牙态度差异的调查
Pub Date : 2016-06-30 DOI: 10.4172/2247-2452.1000899
Yukawa Ken, T. Noriko, Kasugai Shohei
This study used a questionnaire to assess the differences in responses toward dental implants between sexes and identify all the information that should be provided to patients prior to dental implant treatment. A total of 4,512 questionnaires were distributed among patients visiting the Tokyo Medical and Dental University Hospital for oral implants between January 2012 and December 2014. Of these, 2,972 questionnaires (66% of total questionnaires) were considered suitable for analysis. The study included 856 male and 2,116 female patients. With regard to reason of opting for dental implant treatment, males selected the “chewing ability” and females selected the “feeling of disgust associated with dentures.” The main concerns associated with the therapy among females were “post-surgical complications” and “pain after surgery.” There were differences pertaining to the purpose of the therapy between males and females. The results of this study suggest that it is essential to provide accurate and sufficient information to patients when collecting informed consent prior to treatment.
本研究采用问卷调查的方式来评估不同性别对种植牙的反应差异,并确定在种植牙治疗前应向患者提供的所有信息。2012年1月至2014年12月,在东京医科牙科大学医院进行口腔种植的患者中共发放了4512份问卷。其中,2972份问卷(占总问卷的66%)被认为适合分析。该研究包括856名男性和2116名女性患者。对于选择种植牙治疗的原因,男性选择“咀嚼能力”,女性选择“与假牙相关的厌恶感”。在女性中,与治疗相关的主要问题是“术后并发症”和“术后疼痛”。男性和女性在治疗目的上存在差异。本研究结果表明,在治疗前收集知情同意时,向患者提供准确和充分的信息是至关重要的。
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引用次数: 0
Cone beam CT applications in orthodontics 锥形束CT在正畸中的应用
Pub Date : 2016-05-19 DOI: 10.4172/2247-2452.C1.028
Ehsan Hosseini
P employed terminology of cybernetics and control theory to describe craniofacial growth mechanisms and method of operation of functional and orthopedic appliances. The theory demonstrates a qualitative and quantitative relationship between observationally and experimentally collected findings. The Cybernetic approach system operates through signals that transmit information. The signal may be of physical, chemical or electromagnetic nature. Any cybernetic system, when provided an input (or stimulus) it processes such an input and produces an output. The output is related to the input by a transfer function. Physiologic system can be of two types: Open loop: The output does not affect the input and closed loop in which a specific relation is maintained between the input and output. Closed loops are characterized by a feedback loop and a comparator. The input is fed into a comparator which analyses the input and judges the degree to which the transfer function needs to be carried out to obtain a certain output. The output is fed back to the comparator (by a feedback loop) and is analyzed as to its adequacy. If it is found to be inadequate, the transfer function is carried out once again. The feedback loop can have a positive or enhancing effect or a negative or attenuating effect. Servo-system is a type of closed loop in which the main input is constantly changing with time, and the output is constantly adjusted in accordance with the input. The various components of a Servo-system include: Command Reference Input Comparator (Peripheral)-Central Comparator-the actuatorthe coupling system and the controlled system.
P采用控制论和控制论的术语来描述颅面生长机制和功能矫形器具的操作方法。该理论证明了观测和实验结果之间的定性和定量关系。控制论接近系统通过传递信息的信号运作。信号可以是物理的、化学的或电磁的。任何控制论系统,当提供输入(或刺激)时,它处理这样的输入并产生输出。输出通过传递函数与输入相联系。生理系统可以分为两种类型:开环:输出不影响输入;闭环:输入和输出之间保持特定的关系。闭环的特点是一个反馈回路和一个比较器。输入被送入比较器,比较器分析输入并判断传递函数需要执行到何种程度才能获得一定的输出。输出反馈到比较器(通过反馈回路),并分析其充分性。如果发现不充分,则重新执行传递函数。反馈回路可以具有积极的或增强的效果,也可以具有消极的或衰减的效果。伺服系统是一种主输入随时间不断变化,输出随输入不断调整的闭环系统。伺服系统的各个组成部分包括:指令参考输入比较器(外围)-中央比较器-执行器,耦合系统和被控系统。
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引用次数: 4
Implementation of expandable micro-motor bur (EMB) as a new device for immediate placement of dental implants 可扩展微型电机齿槽(EMB)作为牙种植体即刻植入的新装置的实现
Pub Date : 2016-05-19 DOI: 10.4172/2247-2452.C1.027
Amir Hashem Shahidi Bonjar
Electronic Dentistry is an exciting and relatively new field of dentistry that fuses electronic health records, telecommunications technology, digital imaging, and the Internet to link health providers in rural or remote communities. For the patient located in underserved or remote areas, Electronic Dentistry improves ready access to preventive dental care and tele consultation with specialists. It allows the dentist in the nearby community to provide easier access to preventive care to a patient who, otherwise, probably will not seek care. Most dentists and dental educators are unaware that Electronic Dentistry can be used not only for increased access to dental care, but also for advanced dental education. This review discusses the history, scope, and applicability of electronic dentistry by considering the literature from various sources. This is an attempt to reinforce the awareness on electronic dentistry among the dental practitioners in developing countries.
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引用次数: 0
Interdisciplinary orthodontic and dental implant case management 跨学科正畸和种植牙病例管理
Pub Date : 2016-05-19 DOI: 10.4172/2247-2452.C1.026
P. L. Ouellette
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引用次数: 0
Case report: A strategy for planning and management of comprehensive restorative case 病例报告:综合恢复性病例的规划与管理策略
Pub Date : 2016-05-07 DOI: 10.4172/2247-2452.C1.025
Duaa Abo Al Samh
Case: A 35-year old man presented to the clinic requesting dental treatment. Diet history revealed high frequency of exposure to sweet food. He had poor oral hygiene with inadequate fluoride exposure. Intraoral and radiographic examination revealed multiple cavitated caries lesions, secondary caries and incipient lesions, multiple missing teeth (extracted due to caries) and malocclusion. Treatment of this high caries risk patient was performed in three phases. Firstly, dietary adjustments, a full mouth clean and polish, caries excavation and placement of temporary fillings were performed. A professional fluoride application every 2-3 weeks for 3 months was started and combined with fluoridated tooth paste for home use. Secondly, RCT in tooth 34 was performed and fluoride regimen continued. Thirdly, placement of final fillings and build-up of severely destroyed teeth and long-term provisional PFM crown for tooth 34 were performed. Fluoride regimen was continued during this phase. At the 6-month recall, the patient demonstrated good oral hygiene and dietary habits. Regular checkups and the use of fluoridated mouth wash were also recommended for the orthodontic treatment phase.
病例:一名35岁男子来到诊所要求牙科治疗。饮食史显示高频率接触甜食。他口腔卫生不良,氟化物暴露不足。口腔内及x线检查发现多发空腔性龋齿、继发性龋齿及早期病变、多颗缺牙(因龋齿拔除)及错牙合。对这名高龋风险患者的治疗分三个阶段进行。首先,进行饮食调整、口腔清洁和抛光、龋齿挖掘和放置临时填充物。每2-3周进行一次专业的氟化物应用,持续3个月,并与家庭使用的含氟牙膏结合使用。其次,对第34颗牙进行随机对照试验,继续氟化治疗。第三,对34号牙进行最终补牙和严重损坏的牙齿和长期临时烤瓷冠的修复。在这一阶段继续使用氟化物。在6个月的回忆中,患者表现出良好的口腔卫生和饮食习惯。在正畸治疗阶段,还建议定期检查和使用含氟漱口水。
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引用次数: 1
期刊
Oral health and dental management
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