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The findings of a recent study to be published in European Radiology, 2011, and abstracted in PubMed prior to print (http://www.ncbi.nlm.nih.gov/pubmed/21805369), authors C Gaudino and colleagues from the Department of Neuroradiology, Heidelberg, Germany, suggest that MRI may be much better at visualizing periodontal dental structures than multidetector computed tomography (MDCT) or CBCT. In May of 2010 an article was published in Acta Oncol ( Acta Oncol. 2010 May;49(4):447-53) that described the results of a case control study of thyroid cancer and dental x-rays. Subsequently this article, which is based on original research by A Memon, et al, has been extensively publicized via multiple Web reviews. For example, there are over seven plus pages of Web ‘spin-off’ articles meant for the lay public on Google alone related to the study. The Accuracy of Cone Beam CT for Oral Measurements data presented at the IADR/AADR conference in San Diego 2011 According to a paper published by University of Michigan, some orthodontists may be subjecting their young patients, when they order 3-D X-ray screening for simple orthodontic cases, to unnecessary radiation before considering traditional 2-D screening. Historically, the emphasis on dental implant diagnosis and surgery has been on anatomy, bone physiology, and surgical success. A dental implant could not be restored in a single setting because of the functional limitations of existing materials, lab processes, and digital solutions. Workflow involved multiple patient appointments for implant placement and subsequent restoration. The standard for digital computed tomography (CBCT) is the DICOM format. This acronym stands for ‘Digital Information and Communications in Medicine” which is a term that describes the standardized coding of x-ray images. Intrabony periodontal defects have been successfully managed using either resorbable or non-resorbable membrane barriers. However, this guided tissue regenerative technique can be problematic for several reasons. First, with non-resorbable membrane barriers a second surgery is necessary for removal of the material and this can result in trauma to the healing periodontal tissue; in addition, the premature removal of a non-resorbable membrane may affect subsequent bone regeneration. Second, with either material, a poor seal – necessary to provide a barrier against growth of gingiva and connective tissue into the healing site – can result in treatment failure. Although both materials come in preformed sections, getting a precise fit with hand trimming is difficult and often time consuming. Potential problems associated with the placement of mandibular implants in the anterior jaw region between the mental foramina include dehiscences or bone fenestrations, mandibular fractures, injuries to the mental nerve and perforation of the lingual cortical bone during surgery with associated hemorrhage into the floor of the mouth. Potential problems associated with the placement of mandibular implants in the anterior jaw region between the mental foramina include dehiscences or bone fenestrations, mandibular fractures, injuries to the mental nerve, and perforation of the lingual cortical bone during surgery with associated hemorrhage into the floor of the mouth. Thus, prior to surgery, it is important for the surgeon to have accurate x-ray knowledge of bone quality, ridge dimensions such as bone height and width, the location of the mental foramen, mental loop and incisive canal, and possible bone pathology. |
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