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Evolution of image receptors in dental radiology 口腔放射学中图像受体的进化
Pub Date : 2020-03-09 DOI: 10.37983/ijdm.2020.2102
P. Sudarsini, N. Rajesh, R. SudhakaraReddy
The quality of a radiograph depicted by geometric and visual characteristics, in turn also depends on the quality of image receptors. Image receptors in dentistry have seen an enormous evolution trend from conventional x-ray films to the current generation of digital image receptors. The development of cost-effective image receptors is established in various types of imaging procedures. The current article provides an insight into the image receptors used in dental radiology.
由几何和视觉特征描绘的x光片的质量反过来也取决于图像受体的质量。从传统的x射线胶片到现在的数字图像受体,牙科中的图像受体经历了巨大的发展趋势。开发具有成本效益的图像受体是建立在各种类型的成像程序。目前的文章提供了一个深入了解图像受体用于牙科放射学。
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引用次数: 1
Fluoride releasing restorative materials: a review 氟化物释放修复材料综述
Pub Date : 2020-03-09 DOI: 10.37983/ijdm.2020.2104
Brunda Neti, Gowthami Sayana, Lahari Muddala, Satyanarayana Raju Mantena, Anusha Yarram, Harsha Gvd
Fluoride compounds are incorporated as anticariogenic agents in numerous restorative materials. Incorporation of fluoride into restorative materials impart anticariogenic character by various mechanisms including reduction of demineralisation, enhancement of remineralisation, interference of pellicle and plaque and inhibition of microbial growth and metabolism. In addition, the application of the topical fluoride in the form of toothpaste and varnish is also considered as the most effective method of caries prevention. The fluoride combines with HA of the tooth and forms an acid-resistant fluorapatite (FAP) crystals. Also, fluoride enters into the cells of the bacteria and inhibits carbohydrate metabolism, which eventually kills the bacteria. The objective of this review was to emphasise the fluoride-releasing restorative materials available in dentistry.
氟化物被作为致癌剂掺入许多修复材料中。将氟化物掺入修复材料中,通过各种机制具有抗致癌性,包括减少脱矿、增强再矿化、干扰膜和斑块以及抑制微生物生长和代谢。此外,以牙膏和清漆的形式使用局部氟化物也被认为是预防龋齿的最有效方法。氟化物与牙齿的透明质酸结合,形成耐酸的氟磷灰石晶体。此外,氟化物进入细菌的细胞,抑制碳水化合物的代谢,最终杀死细菌。本综述的目的是强调可用于牙科的氟释放修复材料。
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引用次数: 3
Mineral Trioxide Aggregate: an overview of composition, properties and clinical applications 矿物三氧化骨料:组成、性质和临床应用综述
Pub Date : 2020-03-09 DOI: 10.37983/ijdm.2020.2103
Navya Sri Kadali, Rama Krishna Alla, Vineeth Guduri, Ramaraju Av, S. Mc, V. Rudraraju
“Mineral trioxide aggregate” is a cementitious material, which is popular by its trade name MTA. It was first introduced in the year 1993 by Mohmoud Torabinejad at Loma Linda University in California, USA. MTA is a powder mixture of Portland cement clinker, bismuth oxide, and gypsum. It has gained a lot of importance in dentistry in recent years. This importance is because of its extensive use as apical restorative material as well as a medicament for Apexogenesis and Apexification treatment. As it sets by hydration process, the byproducts of insoluble calcium silicate hydrate and alkaline calcium hydroxide offer unique stability and potential to enhance hard tissue regeneration.  This article reviewed the composition, types, properties of MTA and also its applications in the practice of dentistry.
“矿物三氧化骨料”是一种胶凝材料,以其商品名MTA而流行。1993年,美国加州洛马林达大学的mahmoud Torabinejad首次提出了这一概念。MTA是硅酸盐水泥熟料、氧化铋和石膏的粉末状混合物。近年来,它在牙科中得到了很大的重视。这种重要性是因为它广泛用作根尖修复材料以及根尖发生和根尖化治疗的药物。由于水合作用,不溶性水合硅酸钙和碱性氢氧化钙的副产物具有独特的稳定性和增强硬组织再生的潜力。本文综述了MTA的组成、类型、性能及其在牙科实践中的应用。
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引用次数: 6
Fabrication of feeding plate prosthesis for a six days old neonate: a case report 6日龄新生儿喂养板假体的制作1例报告
Pub Date : 2019-12-31 DOI: 10.37983/IJDM.2019.1304
S ArunaKumari
Feeding a new born baby with complete cleft lip and palate is a problematic pursuit because of the communication between the oral cavity and the nasal cavity. A multidisciplinary approach is needed to manage the complex problems involved in the case of such neonates and their families. The present case is of a 6-day-old neonate having complete right unilateral cleft lip and palate (Veau class C) for which palatal obturator was constructed. In this case report a stepwise simple, secure, and uncomplicated procedure for making accurate impressions, maxillary cast, and fabrication of palatal obturator in infants with cleft lip and palate have been presented.
由于口腔和鼻腔之间的交流,喂养一个新生的完全性唇腭裂婴儿是一个有问题的追求。需要一种多学科的方法来处理这些新生儿及其家庭所涉及的复杂问题。本病例是一个6天大的新生儿,患有完全性单侧唇腭裂(Veau C级),为此构建了腭闭孔。在本病例中,报告了一种逐步简单,安全,不复杂的方法,用于制作准确的印模,上颌铸造,并在唇腭裂婴儿中制作腭闭孔。
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引用次数: 1
The amazing spectrum of light –LASER 令人惊叹的光谱——激光
Pub Date : 2019-12-31 DOI: 10.37983/IJDM.2019.1302
L. Reddy, Vineeth Guduri, P. AnoopChowdary, Siddharth Y Gosavi, Shammas Mohammed
“In right light at right time everything is extraordinary”- says Aaron Rose. This is very true with respect to lasers. Discovery of lasers from the spectrum of light has revolutionized the technology in many fields. The word “LASER” means Light Amplification by Stimulated Emission of Radiation. They offer many useful clinical applications for general dentists in the diagnosis and treatment of patients. There are many clinical, aesthetic, and psychological reasons to use lasers. Herein we present a brief overview of “THE AMAZING SPECTRUM OF LIGHT”
“在合适的时间,合适的光线下,一切都是非凡的”——亚伦·罗斯说。对于激光来说,这是非常正确的。从光谱中发现激光使许多领域的技术发生了革命性的变化。“LASER”一词的意思是通过受激辐射进行光放大。它们为普通牙医在诊断和治疗病人方面提供了许多有用的临床应用。使用激光有许多临床、美学和心理上的原因。在此,我们简要介绍“神奇的光谱”。
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引用次数: 0
Corrosion in Titanium dental implants –a review 钛牙种植体的腐蚀研究进展
Pub Date : 2019-12-31 DOI: 10.37983/IJDM.2019.1301
Anusha Yarram, Ramesh Ksv, G NarasimhaRao, Yasmeen Sa, S. Mc, Ramaraju Av
Titanium (Ti) is the most widely used biomaterial for dental implants as it exhibits excellent mechanical properties and biocompatibility. The biocompatibility of titanium is related to thin, protective surface titanium dioxide (TiO2) layer, which forms a boundary at the implant-biological medium interface, reducing its reactivity with the surrounding biological environment and prevents corrosion. However, the metallic materials used as implants are susceptible to corrosion due to variations in the internal electrolyte environment. The surface oxide layer can be destroyed during insertion of implant or micro-motion between implant and bone under loading conditions. The localized destruction causes corrosion of the implant and induces leak of metallic particles or ions into surrounding tissues. The presence of metallic particles in peri-implant soft and hard tissues may be due to frictional wear or corrosion, or simultaneous occurrence wear and corrosion which is known as tribocorrosion. The released metal ions may remain in the intercellular spaces near the site where they were released or may be taken up by macrophages, or they can migrate systemically. This review article highlights various aspects of corrosion, biological response to corrosion products and prevention of corrosion of titanium dental implants.
钛具有优良的力学性能和生物相容性,是应用最广泛的牙种植体生物材料。钛的生物相容性与薄的保护性表面二氧化钛(TiO2)层有关,该层在植入物-生物介质界面处形成边界,降低其与周围生物环境的反应性,防止腐蚀。然而,由于内部电解质环境的变化,用作植入物的金属材料容易受到腐蚀。在加载条件下,种植体插入或种植体与骨之间的微运动会破坏表面氧化层。局部的破坏会引起植入物的腐蚀,并导致金属颗粒或离子泄漏到周围的组织中。金属颗粒在种植体周围软硬组织中的存在可能是由于摩擦磨损或腐蚀,或同时发生磨损和腐蚀,称为摩擦腐蚀。释放的金属离子可能停留在释放部位附近的细胞间隙中,也可能被巨噬细胞吸收,或者它们可以全身迁移。本文综述了钛牙种植体的腐蚀、腐蚀产物的生物反应和预防腐蚀的各个方面。
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引用次数: 2
Fiber reinforced composite and surface coated esthetic archwires -a review 纤维增强复合材料和表面涂层美学弓线的研究进展
Pub Date : 2019-12-31 DOI: 10.37983/IJDM.2019.1303
Harsha Gvd, M Anoosha, K. Pradeep, Padmapriya Cv, M. RaviVarma, Usha Sree Rs
Orthodontic treatment has undergone a drastic transformation for a few years. Many patients present with a set of challenges to orthodontists in terms of esthetics while undergoing orthodontic treatment. The introduction of composite & ceramic brackets has led to the development of esthetic archwires to meet the increased demand for esthetics during orthodontic treatment. This article discusses various widely used esthetic archwires used in orthodontic treatment.
几年来,正畸治疗经历了巨大的转变。许多患者在接受正畸治疗时,在美学方面对正畸医生提出了一系列挑战。复合陶瓷支架的引入导致了美学弓线的发展,以满足正畸治疗期间对美学的日益增长的需求。本文讨论了在正畸治疗中广泛使用的各种美观弓丝。
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引用次数: 1
An overview of dentin bonding agents 牙本质粘结剂综述
Pub Date : 2019-11-15 DOI: 10.37983/IJDM.2019.1204
Navya Sri Kadali, Rama Krishna Alla, Vineeth Guduri, S. Mc
From the past, there has been a lot of use of the bonding agents in restorative dentistry. Choosing of bonding systems has become a challenge for the clinicians as there was a lot of advances regarding the usage of bonding agents. Each successive modification in the formulae has led to the classification of the bonding system into many “generations”. During the past few years, these bonding agents have been replaced by the same systems that are used on dentin. This change occurred because of the benefit of bonding resin to both enamel and dentin. Extensive research is still on the way to develop the best adhesive system that can produce reliable and permanent bonds to dentin.
从过去开始,粘接剂在牙科修复中得到了广泛的应用。选择粘合系统已经成为临床医生的一个挑战,因为有很多关于粘合剂的使用进展。公式中每一次连续的修改都将键合体系划分为许多“代”。在过去的几年里,这些粘结剂已经被用于牙本质的相同系统所取代。这种变化的发生是因为树脂与牙釉质和牙本质结合的好处。目前仍在进行广泛的研究,以开发最佳的粘接剂系统,以产生可靠和永久的牙本质粘接剂。
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引用次数: 5
Advances in alginate impression materials: a review 海藻酸盐压印材料的研究进展
Pub Date : 2019-11-15 DOI: 10.37983/IJDM.2019.1203
Sahithi Alaghari, Surekha Velagala, Rama Krishna Alla, Ramaraju Av
Alginate is an elastic irreversible hydrocolloid which has various applications in dentistry. The applications of alginates include making impressions of edentulous and partially edentulous arches, duplication of casts, and for making study models. Alginates possesses numerous vital properties such as hydrophilicity, ability to record finer details, elastic recovery and inexpensive; makes this material widely used in dentistry. Though alginate is the most commonly used impression material, it has some inherent disadvantages. Alginates contain low-density fine filler particles, which may arise in the form of dust and inhalation these dust particles may cause respiratory problems. Further, they are highly dimensionally unstable due to syneresis & imbibition. Besides, alginates do not adhere to non-perforated trays, low viscosity resulting in gag reflex in some patients, and the inability to identify the correct consistency to load. Several modifications were made in the composition of conventional alginates to address their shortcomings. This article reviewed various recent advances in the alginate impression materials and their performance.
藻酸盐是一种具有弹性的不可逆水胶体,在牙科中有着广泛的应用。海藻酸盐的应用包括制作无牙和部分无牙弓的印模,铸型的复制,以及制作研究模型。海藻酸盐具有许多重要的特性,如亲水性,记录精细细节的能力,弹性恢复和廉价;使这种材料广泛应用于牙科。虽然海藻酸盐是最常用的印模材料,但它有一些固有的缺点。海藻酸盐含有低密度的细填充颗粒,可能以粉尘的形式出现,吸入这些粉尘颗粒可能引起呼吸问题。此外,由于协同作用和抑制作用,它们具有高度的尺寸不稳定性。此外,藻酸盐不能粘附在无穿孔的托盘上,低粘度导致一些患者呕吐反射,并且无法识别正确的浓度来加载。对传统海藻酸盐的组成进行了一些改进,以解决它们的缺点。本文综述了海藻酸盐压印材料及其性能的最新研究进展。
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引用次数: 4
Recent Advances in Dental Composites: An Overview 牙科复合材料的最新进展综述
Pub Date : 2019-11-15 DOI: 10.37983/IJDM.2019.1202
Lavanya Dara, D. Buchi, S. R. Mantena, K. MadhuVarma, D. BheemaligeswaraRao, Vinay Chandrappa
Composite resins are widely used aesthetic materials in restorative dentistry. These materials were introduced to overcome the inherent shortcomings of amalgam restorative materials. Dental amalgams are unesthetic and toxic. Earlier composites lack in mechanical properties to withstand the masticatory forces. Various filler particles have been added to composite resins to improve their physical and mechanical properties.  Filled composite resins exhibit high compressive strength, abrasion resistance, ease of application and high translucency. Depending on the filler size and shapes, various composites have been developed until now. This article is a review of numerous types of composites that are technologically advanced to modify their properties.
复合树脂是牙科修复中广泛使用的美容材料。这些材料的引入是为了克服汞合金修复材料固有的缺点。牙科用汞合金既不美观又有毒。早期的复合材料缺乏机械性能来承受咀嚼力。复合树脂中加入了各种填充颗粒,以改善其物理和机械性能。填充复合树脂具有高抗压强度,耐磨性,易于应用和高透明度。根据填料尺寸和形状的不同,人们开发出了各种复合材料。这篇文章回顾了许多类型的复合材料,这些复合材料在技术上是先进的,可以改变它们的性能。
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引用次数: 10
期刊
International Journal of Dental Materials
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