Dental appliances are the most common cause of accidental foreign body esophageal impaction, especially in the elderly population with decreased oral sensory perception. A 47-year-old man with history of oligophrenia and recurrent epileptic seizures was referred to our hospital following dislocation and ingestion of his upper dental prosthesis. Endoscopic removal and clipping of an esophageal t...

In this study a 3D microtomography display of tooth surfaces after in vitro dental wear tests has been obtained. Natural teeth have been compared with prosthetic teeth, manufactured by three different polyceramic composite materials. The prosthetic dental element samples, similar to molars, have been placed in opposition to human teeth extracted by paradontology diseases. After microtomograp...

OBJECTIVE The aim of this study was to investigate the correlation between the demineralization depth measured by dental computed tomography (CT) and the measured value from a non-destructive dental caries diagnosis with a laser. METHODS Optimal cut-off points were obtained for enamel and dentin caries, from the measured levels from a dental caries diagnosis with a laser, to investigate the c...

Equine cheek teeth (CT) diastemata often cause deep periodontal food pocketing and are therefore regarded as a painful dental disorder of equidae. However there appears to be no information available on the size or shape of these diastemata. This post mortem study examined 16 donkey skulls (mean age = 32-years) containing 45 CT diastemata to define the anatomical shape and dimensions of these d...

Computed Tomography (CT) is an indispensable tool for diagnostic imaging of dentomaxillofacial disease, particularly conditions requiring surgical intervention. CT is used widely to provide a three-dimensional image with satisfactory spatial resolution of the bone and tooth condition; however, imaging artifacts caused by metallic dental materials critically impair the quality of diagnostic imag...

Reliable attenuation correction methods in PET require accurate determination of the attenuation map (μmap), which represents the spatial distribution of linear attenuation coefficients (LACs) at 511 keV for the region under study. Since CT image pixel intensities are directly related to the LAC of the corresponding tissue calculated from the effective CT energy, the μmap at 511 keV can be dire...

PURPOSE Optical coherence tomography (OCT) is a noninvasive diagnostic technique that may be useful for both qualitative and quantitative analyses of the periodontium. Micro-computed tomography (micro-CT) is another noninvasive imaging technique capable of providing submicron spatial resolution. The purpose of this study was to present periodontal images obtained using ex vivo dental OCT and to...

The objective of our research is to develop computer methods to accurately visualize patients in 3-dimensions using advanced imaging and data acquisition devices such as conebeam CT (Computerized Tomography) and mandibular motion capture. Data from these devices were integrated for 3D patient-specific visualization, modeling and animation. We are developing generic methods that can be used with...

purpose: to present a case of orbital abscess secondary to mandibular odontogenic infection. case report: a 30 year old man presented with ocular pain and exophthalmos of the left eye following a dental infection since a few days ago. a localized abscess was detected in the left orbital ct but the paranasal sinuses were clear. involvement of the left third mandibular molar was evident on facial...