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Vascular endothelial growth factor as a response of denture bearing tissues on mechanical stress in diabetes mellitus 血管内皮生长因子作为义齿承载组织对糖尿病患者机械应力的响应
Pub Date : 1900-01-01 DOI: 10.2298/sgs2301018r
Katarina Radovic, B. Brkovic, Jugoslav Ilić, Aleksandra Milić-Lemić, Tamara Jovanovic, Boris Jovanović, J. Roganović
Introduction. Vascular endothelial growth factor (VEGF) is signal molecule enrolled in diabetes mellitus type 2 (DM type 2) oral complications, but there are no studies showing the relation between VEGF and pressure caused by denture wearing in diabetic conditions. The aim of this study is to compare tissue VEGF levels in patients and animals with/without DM in conditions of chronic and acute pressure. Methods. Research was conducted on DM type 2 and healthy partial denture wearers for more than 5 years (78), candidates for teeth extractions and experimental animals of the Wistar rats (40). For chronic conditions, VEGF was measured in 2 mucosal samples covered and not covered by denture in all denture wearers. Demonstrating acute conditions, after 3 days of wearing experimental plate VEGF was measured in 2 gingival samples of palatal mucosa of DM (20) and control rats (20). The concentrations of VEGF (pg/ml) in human and animal tissues were measured by commercially available ELISA kit. Results. Tissue VEGF levels in control and diabetic partial denture wearers not covered by denture were without statistical difference. In comparison to noncovered tissue, VEGF decreased in samples covered by denture, being significantly lower in DM type 2, comparing to healthiest. VEGF levels in palatal mucosa without palatal base did not significantly differ in control and DM rats. VEGF levels under palatal base increased being significantly lower in DM rats comparing to controls. Conclusion. Both, chronic and acute mechanical stress caused by wearing palatal denture (plate) decreased the VEGF levels in diabetic conditions comparing the health?s suggesting the altered homeostasis.
介绍。血管内皮生长因子(Vascular endothelial growth factor, VEGF)是参与糖尿病2型(DM 2)口腔并发症的信号分子,但目前还没有研究显示VEGF与糖尿病患者假牙佩戴造成的压力之间的关系。本研究的目的是比较慢性和急性压力下糖尿病患者和非糖尿病动物的组织VEGF水平。方法。研究对象为2型糖尿病患者、健康佩戴局部义齿5年以上者(78)、拔牙候选者和实验动物Wistar大鼠(40)。对于慢性疾病,在所有义齿佩戴者覆盖和未覆盖的2个粘膜样本中测量VEGF。在DM大鼠(20)和对照大鼠(20)的腭黏膜牙龈样本中,在佩戴实验板3天后,检测急性情况下VEGF的变化。采用市售ELISA试剂盒测定人和动物组织中VEGF的浓度(pg/ml)。结果。正常组和糖尿病患者不戴义齿组的组织VEGF水平无统计学差异。与未覆盖的组织相比,假牙覆盖的样本中VEGF下降,与最健康的相比,糖尿病2型患者的VEGF明显降低。无腭底腭黏膜VEGF水平在对照组与糖尿病大鼠无显著差异。与对照组相比,糖尿病大鼠腭底血管内皮生长因子水平明显升高。结论。与健康对照组相比,佩戴腭义齿(钢板)引起的慢性和急性机械应力均降低了糖尿病患者的VEGF水平。S提示体内平衡改变。
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引用次数: 0
Oral health status of young adults in Serbia - clinical and non-clinical assessment of undergraduate students in Belgrade 塞尔维亚年轻人口腔健康状况——对贝尔格莱德本科生的临床和非临床评估
Pub Date : 1900-01-01 DOI: 10.2298/SGS2101007L
Bogdan Lisul, Djurica Grga
Introduction. Since 1987, there has been little information on oral health (OH) status of young adults aged 19 to 26 in Serbia. This study aimed to investigate the trends in OH status and OH-related quality of life (OHRQoL) of undergraduate student population in Belgrade in 2012. Materials and methods. The study included a total of 699 students of different study fields who underwent a dental examination, with 530 of them agreeing to an assisted survey and 275 forgoing a periodontal assessment. The survey consisted of six sections - basic information, socio-demographic data, oral healthcare use and habits, risk factors, OH self-assessment and OHRQoL. Clinical assessment was performed using the Decayed, Missing, Filled teeth (DMFT) index; Gingival Index; Clinical Attachment Level; Community Periodontal Index, and Plaque index. OHRQoL was evaluated through a modified OH Impact Profile (OHIP-14). Results. The mean DMFT of the examined population was 10.24 (standard deviation [SD] 5.33). Students from East and South Serbia (DMFT=8.69 [SD=4.93]), technical study field (DMFT=8.84 [SD=4.94]), with mother?s having a university degree (DMFT=9.33 [SD=5.15]) and with satisfactory OH (DMFT=8.94 [SD=4.76]) were all significantly associated with lower DMFT. A significantly lower OHRQoL score was observed in students with satisfactory self-reported OH (Score=9.48 [SD=1.44]). The periodontal assessment showed no significant differences across all values of observed indexes. Conclusion. The mean DMFT of Belgrade?s young adults? population has decreased from 1987 to 2012 from 12.5 to 10.4. Self-reported OH is significantly associated with both the DMFT values and OHRQoL.
介绍。自1987年以来,关于塞尔维亚19至26岁年轻人口腔健康(OH)状况的信息很少。本研究旨在调查2012年贝尔格莱德大学本科生健康状况和健康相关生活质量(OHRQoL)的变化趋势。材料和方法。该研究共包括699名来自不同研究领域的学生,他们接受了牙科检查,其中530人同意接受辅助调查,275人放弃了牙周评估。调查包括基本信息、社会人口统计数据、口腔保健使用和习惯、危险因素、OH自我评估和OHRQoL六个部分。采用龋缺补牙(DMFT)指数进行临床评估;牙龈指数;临床依恋水平;社区牙周指数和菌斑指数。OHRQoL通过修改后的OH影响曲线(OHIP-14)进行评估。结果。检查人群的DMFT平均值为10.24(标准差[SD] 5.33)。来自塞尔维亚东部和南部的学生(DMFT=8.69 [SD=4.93]),技术学习领域(DMFT=8.84 [SD=4.94]),与母亲?大学学历(DMFT=9.33 [SD=5.15])和良好的OH (DMFT=8.94 [SD=4.76])均与较低的DMFT相关。自我报告OH满意的学生的OHRQoL得分明显较低(得分=9.48 [SD=1.44])。牙周评估结果显示各观察指标间无显著差异。结论。贝尔格莱德的平均DMFT ?年轻人?人口从1987年到2012年从12.5下降到10.4。自我报告的OH与DMFT值和OHRQoL显著相关。
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引用次数: 0
The effect of sugar-sweetened carbonated soda and carbonated mineral water on the salivary pH value 含糖碳酸苏打水和碳酸矿泉水对唾液pH值的影响
Pub Date : 1900-01-01 DOI: 10.2298/sgs2204160p
Nataša Puškar, Milica Puskar, Milica Jeremic-Knezevic, Daniela Djurovic-Koprivica, L. Andrijevic
Introduction. Saliva plays an important role in maintaining oral health. Its buffer capacity helps neutralise acidic products from food, drinks and dental plaque. Saliva composition, quantitative and qualitative properties, such as acidity, are associated with the occurrence of dental caries, non-carious lesions and periodontitis. The aim of the study was to examine the change in salivary acidity after taking carbonated mineral water and sugar-sweetened carbonated soda in subjects aged 18 to 25 years. Materials and method. The study research was conducted at the Dentistry Clinic of Vojvodina on 30 adult subjects. Salivary acidity was measured with a digital pH meter before, and 5, 10 and 20 minutes after taking 200 ml of carbonated mineral water and 200 ml of sugar-sweetened carbonated soda. The obtained results were statistically processed by mixed, combined analysis of variance. Results. Consumption of carbonated mineral water and sugar-sweetened carbonated soda led to a change in salivary acidity in the examined time intervals. Carbonated mineral water reduced the salivary acidity, and after 20 minutes the acidity recovers reaching levels close to the initial pH value. After taking sugar-sweetened carbonated soda, the salivary pH value dropped. It reached the lowest mean value 5 and 10 minutes after taking the beverage, and then increased slightly without reaching the initial value. In some subjects, the minimum value of the salivary pH obtained was below the value considered critical for the occurrence of enamel and dentin demineralisation. Conclusion. Carbonated mineral water and sugar-sweetened carbonated soda affected the salivary pH value within a period of 20 minutes after consumption. Consuming sugar-sweetened carbonated soda can have adverse effects on oral health.
介绍。唾液在维持口腔健康方面起着重要的作用。它的缓冲能力有助于中和食物、饮料和牙菌斑中的酸性物质。唾液的组成、定量和定性特性,如酸度,与龋齿、非龋齿病变和牙周炎的发生有关。该研究的目的是检查18至25岁的受试者在饮用碳酸矿泉水和含糖碳酸苏打水后唾液酸度的变化。材料和方法。这项研究是在伏伊伏丁那牙科诊所对30名成人受试者进行的。分别在饮用200毫升碳酸矿泉水和200毫升含糖碳酸汽水前、5分钟、10分钟和20分钟用数字pH计测量唾液酸度。所得结果采用混合、联合方差分析进行统计处理。结果。饮用碳酸矿泉水和含糖碳酸汽水会导致唾液酸度在研究时间间隔内发生变化。碳酸矿泉水降低了唾液的酸度,20分钟后,酸度恢复到接近初始pH值的水平。服用含糖碳酸饮料后,唾液pH值下降。在服用饮料后5分钟和10分钟达到最低平均值,随后略有上升,但未达到初始值。在一些受试者中,获得的唾液pH值的最小值低于被认为发生牙釉质和牙本质脱矿的临界值。结论。碳酸矿泉水和含糖碳酸苏打水在饮用后20分钟内会影响唾液pH值。饮用含糖碳酸饮料会对口腔健康产生不利影响。
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引用次数: 0
Implant-supported single zirconia crowns for posterior teeth using completely digital work-flow: A case report 采用完全数字化工作流程的后牙种植支撑单氧化锆冠1例报告
Pub Date : 1900-01-01 DOI: 10.2298/sgs2103153l
M. Ljubičić, M. Živković, Bogdan Bulic
Introduction. Planning fixed prosthodontic reconstruction can be challenging task in everyday practice. When the last tooth in dental arch is missing, a single implant-supported crown is recommended. With the evolution of digital technology, it became possible that these restorations can be made using completely digital approach. The aim of this case report was to present complete clinical procedure of making implant supported single zirconia crowns for posterior teeth using completely digital approach. Case report. A 53-year-old patient presented to the dental office with missing both first molars in the lower dental arch. The decision was made to make two implant-supported single screw-retained crowns, using digital approach. Intraoral scanning of the soft tissues and the implants? position was done using intraoral scanner Medit i500. The laboratory steps followed: computer-assisted design (CAD) and computer-assisted manufacturing (CAM) of zirconia crowns. Conclusion. Implant-supported single crowns for posterior teeth are an excellent solution for patients when the last tooth in dental arch is missing. Digital approach -from initial intraoral scanning (IOS), to designing the restoration in software and further processing of monolithic CAD/CAM generated crowns out of zirconia gives predictable, highly esthetic and functional results for implant-supported single crowns.
介绍。规划固定义齿重建在日常实践中是一项具有挑战性的任务。当牙弓的最后一颗牙缺失时,建议使用单种植牙冠。随着数字技术的发展,这些修复可以使用完全数字化的方法进行。本病例报告的目的是介绍采用全指入路制作后牙种植体支撑单氧化锆冠的完整临床程序。病例报告。一位53岁的病人因下牙弓两颗第一磨牙缺失而来到牙科诊所。我们决定使用数字方法制作两个种植体支持的单螺钉保留冠。口腔内软组织和种植体的扫描?使用mediti500口内扫描仪定位。接下来的实验步骤是:计算机辅助设计(CAD)和计算机辅助制造(CAM)氧化锆冠。结论。后牙种植单冠是牙弓最后一颗牙缺失的一种很好的解决方案。数字方法-从最初的口内扫描(IOS)到在软件中设计修复,以及进一步处理由氧化锆生成的整体CAD/CAM生成的冠,为种植体支持的单个冠提供了可预测的,高度美观和功能的结果。
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引用次数: 0
Application of atomic force microscopy in investigations of dental alloy surfaces 原子力显微镜在牙科合金表面研究中的应用
Pub Date : 1900-01-01 DOI: 10.2298/sgs2301033s
S. Šegota
Introduction. The aim of this informative paper is to show the importance and key role of atomic force microscopy, on one hand, in quantitative determination of the physicochemical changes on the surfaces of dental materials due to their exposure to acids and, on the other hand, in quantification of changes in the physicochemical properties of the surfaces of dental alloys after their processing and the consequences of the processing itself on the quality and applicability of the same. Methods. Atomic force microscopy was used to obtain data quantitatively describing nanoscale changes in Co-Cr dental alloys caused by exposure to formic acid over a 7-day period and to describe the effects of electropolishing and black brush polishing on the surface roughness of dental alloys. Results. Analysis of the topography and roughness of the surfaces of alloys treated with a black brush and electropolishing shows that both methods are applicable in dentistry and leave defects of insufficient size for microorganisms. Treatment of the studied alloys with formic acid leads to an increase in surface roughness, indicating the presence of corrosion processes, especially in the areas of interdentritic nanocrystals. Conclusion. The aforementioned effects of processing and treatment of Co-Cr alloys can be followed in great detail using the technique of atomic force microscopy, especially by analysing the surface topography and its roughness. The method is of extraordinary importance for the evaluation of the use of Co-Cr alloys in dentistry.
介绍。这篇论文信息的目的是展示原子力显微镜的重要性和关键作用,一方面,定量测定的物理化学变化对牙科材料的表面由于他们接触酸,另一方面,在量化的表面物理化学性质的变化后牙科合金加工和处理的后果本身相同的质量和适用性。方法。原子力显微镜用于定量描述暴露在甲酸中7天内Co-Cr牙科合金纳米级变化的数据,以及描述电抛光和黑刷抛光对牙科合金表面粗糙度的影响。结果。对用黑刷和电抛光处理的合金表面形貌和粗糙度的分析表明,这两种方法都适用于牙科,并且为微生物留下了尺寸不足的缺陷。用甲酸处理所研究的合金导致表面粗糙度的增加,表明存在腐蚀过程,特别是在枝晶间纳米晶体区域。结论。利用原子力显微镜技术,特别是通过分析Co-Cr合金的表面形貌和粗糙度,可以非常详细地跟踪上述加工和处理Co-Cr合金的影响。该方法对评价钴铬合金在牙科中的应用具有重要意义。
{"title":"Application of atomic force microscopy in investigations of dental alloy surfaces","authors":"S. Šegota","doi":"10.2298/sgs2301033s","DOIUrl":"https://doi.org/10.2298/sgs2301033s","url":null,"abstract":"Introduction. The aim of this informative paper is to show the importance and\u0000 key role of atomic force microscopy, on one hand, in quantitative\u0000 determination of the physicochemical changes on the surfaces of dental\u0000 materials due to their exposure to acids and, on the other hand, in\u0000 quantification of changes in the physicochemical properties of the surfaces\u0000 of dental alloys after their processing and the consequences of the\u0000 processing itself on the quality and applicability of the same. Methods.\u0000 Atomic force microscopy was used to obtain data quantitatively describing\u0000 nanoscale changes in Co-Cr dental alloys caused by exposure to formic acid\u0000 over a 7-day period and to describe the effects of electropolishing and\u0000 black brush polishing on the surface roughness of dental alloys. Results.\u0000 Analysis of the topography and roughness of the surfaces of alloys treated\u0000 with a black brush and electropolishing shows that both methods are\u0000 applicable in dentistry and leave defects of insufficient size for\u0000 microorganisms. Treatment of the studied alloys with formic acid leads to an\u0000 increase in surface roughness, indicating the presence of corrosion\u0000 processes, especially in the areas of interdentritic nanocrystals.\u0000 Conclusion. The aforementioned effects of processing and treatment of Co-Cr\u0000 alloys can be followed in great detail using the technique of atomic force\u0000 microscopy, especially by analysing the surface topography and its\u0000 roughness. The method is of extraordinary importance for the evaluation of\u0000 the use of Co-Cr alloys in dentistry.","PeriodicalId":180624,"journal":{"name":"Serbian Dental Journal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129761443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
How to prevent fracture of NiTi files 如何防止镍钛锉断裂
Pub Date : 1900-01-01 DOI: 10.2298/sgs2102086z
S. Živković, Marijana Popović-Bajić, Milica Jovanovic-Medojevic, Jelena Neskovic
More certain therapeutic and significantly facilitated solution of everyday endodontic problems are provided by the introduction of NiTi rotary files in endodontic practice and their proper application. However, their widespread use has caused more and more frequent fractures and has become a significant frustrating factor that diminishes their numerous benefits. Torsional stress and cyclic fatigue are the main reasons for the occurrence of a fracture, and the frequency of NiTi file fractures is exactly proportional to the degree of bending of the canal, knowledge of the features of the file, ie. the skill and expertise of the therapist. The most dominant factor for the occurrence of fractures is the dentist who, in addition to manual dexterity, must have a good knowledge of the anatomy of various canal systems and file design in order to make the best choice for each individual case. Properly formed access cavity and knowledge of the working part of NiTi files enable maximum realization of endodontic skills, increased efficiency of intervention and reduced possibility of error during canal instrumentation. The special treatment of NiTi alloy and new solutions related to the design of the working part have significantly increased file flexibility and resistance to cyclic fatigue. Specific design (reduced number of threads, change of conicity, interruption of blade continuity), reduced engagement of file, ie. change of dynamics of movement in the canal (full rotation, reciprocal, eccentric, transaxial), as well as reduced number of processing files, have also significantly influenced the reduction of fracture risks. The aim of this paper was to analyze the most common reasons for the fracture of NiTi files and emphasize measures and factors that can increase their safe use and reduce complications during canal instrumentation.
通过在牙髓治疗实践中引入NiTi旋转锉及其正确应用,为日常牙髓问题提供了更确定的治疗性和显著的便利解决方案。然而,它们的广泛使用导致了越来越频繁的骨折,并成为削弱其众多益处的重要因素。扭转应力和循环疲劳是发生断裂的主要原因,NiTi锉断裂的频率与管的弯曲程度正好成正比,了解锉的特征,即:治疗师的技能和专业知识。发生骨折的最主要因素是牙医,除了手的灵巧性外,还必须对各种根管系统的解剖和锉的设计有很好的了解,以便为每个病例做出最好的选择。正确形成的通道腔和NiTi锉工作部分的知识可以最大限度地实现根管技术,提高干预效率,减少根管预备过程中的错误可能性。NiTi合金的特殊处理和与工作部件设计相关的新解决方案显著提高了锉的柔韧性和抗循环疲劳能力。具体设计(减少螺纹数,改变锥度,中断刀片连续性),减少锉的啮合,即。椎管内运动动力学的改变(全旋转、反向、偏心、跨轴)以及处理锉数的减少也显著影响了骨折风险的降低。本文旨在分析NiTi锉断裂的常见原因,强调提高其安全使用和减少管内预备并发症的措施和因素。
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引用次数: 1
Split crest technique - an effective method in dental implantology for narrow ridges: A case report 裂嵴技术-一种有效的窄嵴种植方法:1例报告
Pub Date : 1900-01-01 DOI: 10.2298/sgs2301039b
V. Biočanin, Djordje Pejanović, Djordje Antonijević, Marija Ciric, Z. Tambur, S. Zarić
Introduction. Implant placement with simultaneous bone augmentation presents procedure with high risk of complications. In those situations, one of the surgical procedures with promising outcomes is the split crest technique. Case report. A 69-year-old edentulous patient was referred to the Clinic of Oral Surgery, at the Faculty of Dentistry in Pancevo. The width of the mandibular alveolar ridge in the inter-canine region was 2 mm. For the ridge splitting and expansion, a special split and expansion kit was used (Esset KitR, Osstem, South Korea). The procedure started with crestal remover carbide cylindrical bur of 7 mm diameter for flattening of the alveolar ridge to the width of 4 mm. Then, a sharp lance drill was used to mark the places for implant osteotomies and placement. After that, 1.8 mm twist drill was used to prepare a bed of 10 mm depth, and a 13 mm saw was directed vertically. Set of expansion drills were used to expand the alveolar ridge gradually. Two implants 3.5x10 mm each (TSIII SAR, Osstem, South Korea) were inserted in the region of lower canines and the space between split buccal and lingual bone lamellae remained empty. Initial stability of inserted implants was assessed by implant stability quotient (ISQ). The values for implant stability were high for both inserted implants (98 and 93). After the surgical procedure, a control CBCT was done. The wound healed uneventfully. Conclusion. Split crest technique seems to be a predictable alternative for implant placement in narrow alveolar ridges.
介绍。种植体植入与同时骨增强是一个高风险的手术并发症。在这种情况下,一种有希望的手术方法是劈裂嵴技术。病例报告。一名69岁无牙患者被转介到潘切沃牙科学院口腔外科诊所。下颌齿间区牙槽嵴宽度为2mm。对于脊裂和扩展,使用了一种特殊的分裂和扩展套件(Esset KitR, Osstem,韩国)。手术开始时使用直径为7毫米的齿冠去除器硬质合金圆柱形齿柄,将牙槽嵴压平至4毫米的宽度。然后,使用锋利的枪钻来标记植入体截骨和放置的位置。然后用1.8 mm麻花钻准备10 mm深的床层,用13 mm的锯片垂直导向。采用一套扩张钻逐步扩大牙槽嵴。在犬的下牙区植入2个3.5x10 mm的种植体(TSIII SAR, Osstem, South Korea),分离的颊骨和舌骨片之间的空间保持空白。采用种植体稳定性商数(ISQ)评估植入种植体的初始稳定性。两种种植体的稳定性值都很高(98和93)。手术后进行对照CBCT。伤口平静地愈合了。结论。裂冠技术似乎是一个可预测的替代种植体放置在狭窄的牙槽嵴。
{"title":"Split crest technique - an effective method in dental implantology for narrow ridges: A case report","authors":"V. Biočanin, Djordje Pejanović, Djordje Antonijević, Marija Ciric, Z. Tambur, S. Zarić","doi":"10.2298/sgs2301039b","DOIUrl":"https://doi.org/10.2298/sgs2301039b","url":null,"abstract":"Introduction. Implant placement with simultaneous bone augmentation presents\u0000 procedure with high risk of complications. In those situations, one of the\u0000 surgical procedures with promising outcomes is the split crest technique.\u0000 Case report. A 69-year-old edentulous patient was referred to the Clinic of\u0000 Oral Surgery, at the Faculty of Dentistry in Pancevo. The width of the\u0000 mandibular alveolar ridge in the inter-canine region was 2 mm. For the ridge\u0000 splitting and expansion, a special split and expansion kit was used (Esset\u0000 KitR, Osstem, South Korea). The procedure started with crestal remover\u0000 carbide cylindrical bur of 7 mm diameter for flattening of the alveolar\u0000 ridge to the width of 4 mm. Then, a sharp lance drill was used to mark the\u0000 places for implant osteotomies and placement. After that, 1.8 mm twist drill\u0000 was used to prepare a bed of 10 mm depth, and a 13 mm saw was directed\u0000 vertically. Set of expansion drills were used to expand the alveolar ridge\u0000 gradually. Two implants 3.5x10 mm each (TSIII SAR, Osstem, South Korea) were\u0000 inserted in the region of lower canines and the space between split buccal\u0000 and lingual bone lamellae remained empty. Initial stability of inserted\u0000 implants was assessed by implant stability quotient (ISQ). The values for\u0000 implant stability were high for both inserted implants (98 and 93). After\u0000 the surgical procedure, a control CBCT was done. The wound healed\u0000 uneventfully. Conclusion. Split crest technique seems to be a predictable\u0000 alternative for implant placement in narrow alveolar ridges.","PeriodicalId":180624,"journal":{"name":"Serbian Dental Journal","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124356663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Maxillary bone necrosis following the use of formaldehyde containing paste: Case report 上颌骨坏死后使用含甲醛糊:1例报告
Pub Date : 1900-01-01 DOI: 10.2298/sgs2003165r
Igor Radovic, Lado Davidović, Smiljka Cicmil, S. Tomić, D. Ivanović, Ljiljana Bjelović
Many of medicaments used historically in root canal treatment have been shown to be cytotoxic. Paraformaldehid agents (such as Toxavit and Depulpin) are used to devitalize inflamed pulp when local anesthesia is ineffective. The misuse of pulp devitalizing agents may cause damage to gingiva and alveolar bone. This case report demonstrates complications arising after application of paraformaldehyde containing paste, necrosis of the gingiva and alveolar cortical bone, which resulted in great loss of supporting bone. Surgical intervention was required wherein necrotic bone was removed and bone defect was filled with xenograft of bovine origin. After three months endodontic treatment was performed. After the treatment, the patient?s complaints were resolved. The use of paraformaldehyde-based agents during endodontic therapy requires special caution.
历史上用于根管治疗的许多药物已被证明具有细胞毒性。当局部麻醉无效时,多聚甲醛药物(如Toxavit和Depulpin)可用于使发炎的牙髓恢复活力。牙髓灭活剂的误用会对牙龈和牙槽骨造成损伤。本病例报告显示应用含多聚甲醛膏后出现的并发症,导致牙龈和牙槽皮质骨坏死,导致支撑骨大量丢失。手术干预是必需的,其中坏死骨被移除,骨缺损填补了牛来源的异种移植物。三个月后进行牙髓治疗。治疗后,病人?S的投诉得到了解决。在根管治疗中使用多聚甲醛类药物需要特别小心。
{"title":"Maxillary bone necrosis following the use of formaldehyde containing paste: Case report","authors":"Igor Radovic, Lado Davidović, Smiljka Cicmil, S. Tomić, D. Ivanović, Ljiljana Bjelović","doi":"10.2298/sgs2003165r","DOIUrl":"https://doi.org/10.2298/sgs2003165r","url":null,"abstract":"Many of medicaments used historically in root canal treatment have been shown\u0000 to be cytotoxic. Paraformaldehid agents (such as Toxavit and Depulpin) are\u0000 used to devitalize inflamed pulp when local anesthesia is ineffective. The\u0000 misuse of pulp devitalizing agents may cause damage to gingiva and alveolar\u0000 bone. This case report demonstrates complications arising after application\u0000 of paraformaldehyde containing paste, necrosis of the gingiva and alveolar\u0000 cortical bone, which resulted in great loss of supporting bone. Surgical\u0000 intervention was required wherein necrotic bone was removed and bone defect\u0000 was filled with xenograft of bovine origin. After three months endodontic\u0000 treatment was performed. After the treatment, the patient?s complaints were\u0000 resolved. The use of paraformaldehyde-based agents during endodontic therapy\u0000 requires special caution.","PeriodicalId":180624,"journal":{"name":"Serbian Dental Journal","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121957667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of surface characteristics of new rotary nickel-titanium instruments - SEM-EDS analysis 新型旋转镍钛仪器表面特性评价——SEM-EDS分析
Pub Date : 1900-01-01 DOI: 10.2298/SGS2101019J
Milica Jovanovic-Medojevic, Alena Zdravković, Mina Medojevic, D. Stratimirovic
Introduction. Modern endodontic procedure implies the use of rotary Ni-Ti instruments during chemomechanical treatment of root canals. The aim of this study is to analyze the surfaces of new (unused) rotary endodontic instruments using the SEM-EDS method and determine how frequently manufacture defects or impurities appear on their working surfaces. Material and method. Five new different sets of rotary endodontic Ni-Ti instruments were included in this study: K3, Mtwo, ProTaper Universal, HyFlex and BioRaCe. The working part of endodontic instrument was analyzed using SEMEDS method (magnifications ?150 to ?2000), which determined the morphological characteristics of the instrument surface and chemical composition of the found impurities. Statistical analysis was performed using the Fisher?s test (p < 0.05). Results. The results of SEM-EDS analysis showed that there is no new instrument without defects on its surface. The most common defects were observed in K3 (27.43%) and ProTaper Universal group (27.21%) and the least were in BioRaCe instruments (7.67%). The most common type of defect in tested instruments was fretting. In addition, the presence of debris and metal strips was found on all instruments, while corrosion of the working part was observed only in K3, ProTaper Universal and Mtwo systems in a small percentage. Conclusion. Based on the results of this research, it can be concluded that manufacturing defects were noticed in all examined instruments. The most common defect is pitting. Impurities such as debris and metal strips have also been registered. No organic debris was observed on electropolished surface of BioRaCe instruments, but a small percentage of other types of defects were registered.
介绍。现代根管治疗过程意味着在根管化学机械治疗过程中使用旋转镍钛器械。本研究的目的是使用SEM-EDS方法分析新的(未使用的)旋转根管器械的表面,并确定其工作表面出现制造缺陷或杂质的频率。材料和方法。本研究纳入了K3、Mtwo、ProTaper Universal、HyFlex和BioRaCe五套不同的旋转牙髓镍钛器械。采用SEMEDS(放大倍数150 ~ 2000)对根管器械的工作部位进行分析,确定了器械表面的形态特征和发现杂质的化学成分。采用Fisher?S检验(p < 0.05)。结果。SEM-EDS分析结果表明,没有一种新的仪器表面没有缺陷。K3组和ProTaper Universal组缺损发生率最高(27.43%),BioRaCe组缺损发生率最低(7.67%)。测试仪器中最常见的缺陷类型是微动。此外,在所有仪器上都发现了碎片和金属条的存在,而工作部分的腐蚀仅在K3, ProTaper Universal和Mtwo系统中观察到一小部分。结论。根据本研究的结果,可以得出结论,在所有被检测的仪器中都注意到了制造缺陷。最常见的缺陷是点蚀。杂物和金属条等杂质也已登记。在BioRaCe仪器的电抛光表面未观察到有机碎屑,但记录了一小部分其他类型的缺陷。
{"title":"Evaluation of surface characteristics of new rotary nickel-titanium instruments - SEM-EDS analysis","authors":"Milica Jovanovic-Medojevic, Alena Zdravković, Mina Medojevic, D. Stratimirovic","doi":"10.2298/SGS2101019J","DOIUrl":"https://doi.org/10.2298/SGS2101019J","url":null,"abstract":"Introduction. Modern endodontic procedure implies the use of rotary Ni-Ti\u0000 instruments during chemomechanical treatment of root canals. The aim of this\u0000 study is to analyze the surfaces of new (unused) rotary endodontic\u0000 instruments using the SEM-EDS method and determine how frequently\u0000 manufacture defects or impurities appear on their working surfaces. Material\u0000 and method. Five new different sets of rotary endodontic Ni-Ti instruments\u0000 were included in this study: K3, Mtwo, ProTaper Universal, HyFlex and\u0000 BioRaCe. The working part of endodontic instrument was analyzed using SEMEDS\u0000 method (magnifications ?150 to ?2000), which determined the morphological\u0000 characteristics of the instrument surface and chemical composition of the\u0000 found impurities. Statistical analysis was performed using the Fisher?s test\u0000 (p < 0.05). Results. The results of SEM-EDS analysis showed that there is no\u0000 new instrument without defects on its surface. The most common defects were\u0000 observed in K3 (27.43%) and ProTaper Universal group (27.21%) and the least\u0000 were in BioRaCe instruments (7.67%). The most common type of defect in\u0000 tested instruments was fretting. In addition, the presence of debris and\u0000 metal strips was found on all instruments, while corrosion of the working\u0000 part was observed only in K3, ProTaper Universal and Mtwo systems in a small\u0000 percentage. Conclusion. Based on the results of this research, it can be\u0000 concluded that manufacturing defects were noticed in all examined\u0000 instruments. The most common defect is pitting. Impurities such as debris\u0000 and metal strips have also been registered. No organic debris was observed\u0000 on electropolished surface of BioRaCe instruments, but a small percentage of\u0000 other types of defects were registered.","PeriodicalId":180624,"journal":{"name":"Serbian Dental Journal","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115860875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Overview of changes in the health sector and its financing in the Republic of Serbia in the period 2004-2020 2004-2020年期间塞尔维亚共和国卫生部门的变化及其筹资概况
Pub Date : 1900-01-01 DOI: 10.2298/sgs2302095g
Milena Gajic-Stevanovic, Ivana Stevanović
Introduction. In the period from 2004 to 2020, many reforms were implemented in the health sector of the Republic of Serbia and it?s financing. The aim of this work was to provide an insight into foundations on which healthcare was based in the Republic of Serbia in the period from 2004 to 2020 and review the reform changes in the healthcare sector and it?s financing. Material and method. A retrospective analysis of data from the National Health Account of the Institute of Public Health of Serbia, the regulations of the Republic Health Insurance Fund, reports of the Ministry of Health as well as laws and regulations related to the health sector was performed. Results. The results of the analysis showed that the State health sector represented the foundation of the health system in the Republic of Serbia in the observed period. Of the total health financing, it was estimated that about sixty percent were public financing schemes, and about forty percent belonged to private schemes, with a large part of private schemes being out-of-pocket payments. Conclusion. The general conclusion of the analysis is that in the observed period, within the framework of the reform changes, Serbia had a good system of exemption from participation, but that out-of-pocket payments for certain health services and corrupt payments represented a barrier to health care.
介绍。2004年至2020年期间,塞尔维亚共和国卫生部门实施了许多改革。年代融资。这项工作的目的是深入了解2004年至2020年期间塞尔维亚共和国医疗保健的基础,并审查医疗保健部门的改革变化。年代融资。材料和方法。对来自塞尔维亚公共卫生研究所国民卫生账户、共和国健康保险基金条例、卫生部报告以及与卫生部门有关的法律和条例的数据进行了回顾性分析。结果。分析结果表明,在观察期间,国家卫生部门是塞尔维亚共和国卫生系统的基础。据估计,在全部保健资金中,大约60%是公共资金计划,大约40%属于私人计划,其中很大一部分是自费支付。结论。分析的总体结论是,在所观察到的期间内,在改革变化的框架内,塞尔维亚有一个良好的豁免参与制度,但某些保健服务的自付付款和腐败付款是保健的障碍。
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Serbian Dental Journal
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