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عنوان فارسی مقاله:
مسیر گرفتگی و یک مفهوم از یک دستگاه برای آزمایش عمر عملکرد دندان مصنوعی
عنوان انگلیسی مقاله:
Occlusion trajectory and a concept of a device for testing operating life of dentures
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
The anatomical structure consisting of the temporomandibular joints and the mastication muscles acting together, which comprise the stomatognathic system, constitute the complex process of mandibular (the movable bone) movements in relation to the maxilla (the immovable bone). These movements are performed in three key directions [1,2]: – opening and closing (lowering and lifting) – antero-posterior (protrusion and retrusion) – lateral mandibular movements (right and left). Moreover, the net action of the movements mentioned above is not only a rather vital but also possibly the most important aspect. In this context, it can be stated that during mandibular movements, individual elements in the temporomandibular joints and the muscles participating in the act of mastication work together closely. The initial position of the mandible is its rest (postural) position, in which the mandible is slightly distant from the maxilla, while the adductor and the abductor muscles are in equilibrium with each other [3]. During the lowering movement, translation occurs in the joint, i.e. the downward movement, protrusion, and rotation of the articular head–movement around the transversal axis of rotation [3]. Working is the digastrics muscles, the mylohyoid muscles, and the geniohyoid muscles, the movement in both joints being symmetrical. During the lifting movement of the mandible, the temporal muscles, the masseter muscles, and the medial pterygoid muscles are working, the movement being a reverse of the lowering movement. In the final phase, all teeth are in their maximal intercuspal position. Protrusion should also be a symmetrical movement, in which the condyle of mandible moves forwards and downwards to the vertex of the articular eminence. Acting bilaterally in this movement is the lateral pterygoid muscle, while retrusion is caused by the temporal muscle, the masseter muscle, and the muscles of the floor of the oral cavity. During lateral mandibular
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کلمات کلیدی:
Occlusion trajectory and a concept of a device for testing operating life ... www.evidence-based-dentistry.org/occlusion-trajectory-and-a-concept-of-a-device-for-t... Occlusion trajectory and a concept of a device for testing operating life of dentures. by Paweł Łabno on 02/06/2016 updated: 02/06/16. Conclusions: On the ... Occlusion trajectory and a concept of a device for testing operating life ... https://www.colwiz.com/.../occlusion_trajectory_and_a_concept_of_a_device_for_testin... Occlusion trajectory and a concept of a device for testing operating life of dentures. 2016-Sep-14, Advances in medical sciences, ISSN: 1898-4002. Add to My ... [PDF]Guidance document - Classification of medical devices - European ... ec.europa.eu/consumers/sectors/medical-devices/.../2_4_1_rev_9_classification_en.pd... The classification of medical devices is a 'risk based' system based on the vulnerability of the .... The term surgical operation used in this definition includes all clinical ..... Some devices used on breached dermis may even have a life-sustaining or .... Materials for manufacturing dentures. 30 ... Tester of artificial heart valves. [PDF]Development of a device to study fatigue life of fixed partial dentures https://riunet.upv.es/.../Gutiérrez%3BMeseguer%20-%20Development%20of%20a%2... by SCG Rubert - 2012 - Related articles Development of a device to study fatigue life of fixed partial dentures ... Keywords: Fixed partial dentures, masticatory force simulation device, testing device, validation, laboratory .... operations, tools and cutting conditions have been defined. overlay dentures – constructional and research aspects yadda.icm.edu.pl/.../httpwww_actawm_pb_edu_plvol4no4jalbrzykowskimystkowskaen... by M Jałbrzykowski - 2010 - Related articles tional life and reliability, the key technological process ... The denture operational durability ... this device works in the couple of pin/disc or ball/disc. ... An example of model for prosthetic bridges tests (Fischer,. 2004): a) stable part of bone, b) movable part of bone. In view of the fact that the dental prosthesis is a team. Dentures - Wikipedia https://en.wikipedia.org/wiki/Dentures Dentures are prosthetic devices constructed to replace missing teeth; they are supported by the ... Occlusal view of the same maxillary denture. .... with his teeth throughout his life, and historians have tracked his experiences in great detail. ... This arrangement of teeth is tested in the mouth so that adjustments can be made ...
