نتایج جستجو برای: facial bone
تعداد نتایج: 362049 فیلتر نتایج به سال:
UNLABELLED The dimensions and relationships of the structures of the dentogingival unit have been greatly overlooked because of the inability to easily and precisely determine them. The purpose of the present study was to develop a soft tissue cone-beam computed tomography (ST-CBCT) to improve soft tissue image quality and allow the determination of the dimensions and relationships of the struc...
The facial primordia initially consist of buds of undifferentiated mesenchyme, which give rise to a variety of tissues including cartilage, muscle and nerve. These must be arranged in a precise spatial order for correct function. The signals that control facial outgrowth and patterning are largely unknown. The bone morphogenetic proteins Bmp-2 and Bmp-4 are expressed in discrete regions at the ...
The purpose of this study is to present some morphological and morphometric aspects of the facial nerve and especially of the tympanic and mastoid segments of this nerve. The authors follow up a mesoscopic study concerning the tract (length, angulation, width) of these segments and the anatomic relations with the important structures of the middle ear. At the same time, some anatomical variatio...
OBJECTIVE Our study emphasizes the relationship between the temporal bone structures and the mastoid portion of the facial nerve. MATERIAL AND METHODS Thirty-two temporal bones taken from adult cadavers of both sexes subjected to tympanoplastic procedure were used to make reference measures of the mastoid portion of the facial nerve. Appropriate instruments were used for measurement and stati...
INTRODUCTION Orthodontic mini-implants have been incorporated into orthodontic treatment modalities. Adequate bone at mini-implant placement site can influence the success or failure of anchorage. The present study was to determine the thickness of cortical bone in the maxillary mid-palatal area at predetermined points for the placement of orthodontic mini-implants using Cone Beam CT technique ...
Craniofacial prostheses, also known as epistheses, are artificial substitutes for facial defects. The breakthrough for rehabilitation of facial defects with implant-retained prostheses came with the development of the modern silicones and bone anchorage. Following the discovery of the osseointegration of titanium in the 1950s, dental implants have been made of titanium in the 1960s. In 1977, th...
The objective of this study is to analyze the biomechanical effects of sinuses in the skull on the facial impact response. Two models were built, where one had sinuses and the other had none. The models were verified using cadaver test data, including impacts to frontal bone, zygomatic bone, and maxillae. In the maxilla and zygoma impact, sinuses were found to have no significant effect on the ...
0 Osseous reconstructions with free tissue transfer techniques in the facial region are well established and provide satisfactory results. Also, the introduction of new planning and transfer tools has simplified the surgical process for mandibular reconstruction. The reconstruction of the mandible remains very challenging: functional aspects like speech, swallowing, and chewing—with the help of...
In the current scenario, facial appearance of patient is prime consideration during rehabilitation. The aesthetics edentulous are greatly affected due loss alveolar bone, muscle tonicity which may be lead to undesirable hollowing cheeks with age. Cheek plumper a frequently used, non-invasive, simple prosthesis support sunken and help itscost effectiveness.
OBJECTIVE The aim of this paper was to address the management of acute facial nerve paralysis after temporal bone fracture and the outcomes of late decompression. METHODS The study design was a retrospective review of eight patients who underwent late decompression of acute facial nerve paralysis due to temporal bone fracture involving the geniculate region. Pre-operative electrophysiological...
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