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Radiographic interpretation is crucial for the excellence of quality patient care. Image enhancements can contribute to better image that allow the clinician to derive the optimum amount of information from the radiographic data. However, the degree of enhancement applied to the original image can produce distortions that will lead to misinterpretation. This research presents the effect of Intra-oral...
It has been revealed that dental caries are significantly lossy than sound tooth in millimeter waves. In order to diagnose dental caries noninvasively, reflection coefficient of the dental caries is measured and compared to that of sound tooth. The simulation is performed to obtain electromagnetic (EM) wave distribution. The reflection change in frequency domain shows that the caries can be detected...
Identification of occlusal caries remains a major concern for the diagnosis, which is still highly subjective and presents a considerable variability among clinicians. Dentists have been observed an increase of a specifically type of caries lesion, the hidden caries. Among the available techniques to assess the hidden caries, the measurement of electrical impedance has been shown to be one of the...
Mid-infrared (MIR) laser with a specific wavelength can excite the corresponding biomolecular site to regulate chemical, thermal and mechanical interactions to biological molecules and tissues. In laser surgery and medicine, tunable MIR laser irradiation can realize the selective and less-invasive treatments and the special diagnosis by vibrational spectroscopic information. This paper showed a novel...
The computer information processing, databases, graphics technology, can be widely applied to the dental clinic information management system. This paper presents a distributed data processing framework for the oral health care information management based on the CSCWD technology. The framework is based on a multi-layers distributed architecture, and is comprised by a collaborative toolkit of the...
It has been revealed that dental caries are significantly lossy than sound tooth in millimeter waves. In order to diagnose dental caries noninvasively, reflection coefficient of the dental caries is measured and compared to that of sound tooth. The simulation is performed to obtain electromagnetic (EM) wave distribution. The reflection change in frequency domain shows that the caries can be detected...
Dental panoramic radiography, which plays an important part in the diagnosis of oral diseases especially the plastic, has been widely used in hospitals as a branch of radiography. The dental panoramic X-ray images show a two-dimensional view of whole teeth from left second molar to right second molar only, but they do not contain the 3D information of patients' oral and maxillofacial anatomical structure...
A new and non-invasive method adapted for optical diagnosis of early caries is proposed by researching on the interaction mechanism of laser with dental tissue and relations of remitted light with optical properties of the tissue. This method without light filter, differed from the DIAGNodentreg and PNC method in its ability for registering fluorescence spectrum. The characteristic spectrum of dental...
Electronic health information systems (e.g. health record systems, clinical information systems) can assist in the provision of better health care services for patients and help doctors and other health care workers treat and diagnose patients more effectively and efficiently. One of the most important issues in health-related information systems is high information security and stringent access control...
Ultrasound is a well-established tool for medical imaging but it has yet to emerge in routine use in dental diagnostics. Nevertheless, it was shown in the late 1970s that ultrasound can be used to probe the internal structures of teeth, and more recently to observe surface changes due to caries and acid erosion.
Proximal surface lesions are not very often detected by X-ray examination, suggesting the predominance of a subjective diagnosis on the part of the dentist. Since the magnitude of light scattering within the tooth decreases exponentially at longer wavelengths, evaluation of transillumination by near infra red lasers is a new alternative noninvasive technique to detect and quantify demineralization...
H. pylori in the oral cavity may be the possible underlying cause of recurrent stomach illness. Therefore, we test the H. pylori in the oral cavity through chromaticity analysis and try to find an easy and convenient H. pylori detection way, which is of clinical necessity. Integrate the results of chromaticity to establish the intensity of redness as value. The average ratio of the red chromaticity...
Summary form only given. Dental restoration interfaces can present failures, known as marginal microleakage. These failures are extremely difficult to diagnose and can develop into recurrent caries if left untreated. The most common tool used for diagnostic imaging in dentistry, X-ray, is not able to visualize micrometric structures. Evaluation of dental restoration in a non-invasive way is a very...
Research has shown that over 90% of all adults experience dental caries, and the early diagnosis of the carious lesion has become an important aspect of maintaining dental health. Advanced diagnostic and imaging devices can be used to identify tooth damage due to caries, compensating for the low sensitivity (high false negative) rate of visual and visual-tactile inspection by dentists. However, existing...
This paper introduces the production of 3D virtual clinic to help dentists in their treatment. To achieve this goal, different scientific areas are integrated such as: computer graphics, pattern recognition, computer vision, information technology and finite element machine (FEM). The proposed system includes the following tools; patient information system, automatic 2-D cephalometrics, 3-D cephalometrics,...
This study is concerned with application of a complete denture occlusion simulation system (CDOSS) in the field of dental restoration. The principle of CDOSS is described briefly. With the aid of this software, the visualization and diagnosis of mandibular movement can be easily realized. The statistical results from 10 edentulous cases discussed in this study indicate that there was no significant...
This paper presents a fiuidic probe that can self-adapt its shape to teeth and detect dental caries by sensing the variation in electrical-impedance. The fiuidic probe, whose liquid tip spontaneously spreads on hydrophilic tooth surface and into underlying caries, is employed to create intimate contact for impedance sensing. A tubular air sleeve shaped by the probe casing is applied around the liquid...
Ultrasonic dental scaler is an instrument to remove dental calculi using ultrasonic vibration of a transducer. The conventional transducer has a hose to provide water to scaling point. The hose causes attenuation of the ultrasonic vibration. This paper describes a new transducer design to avoid the attenuation. Design decision by comparison of two types of transducer designs is reported. Additionally,...
Intraoral radiography is one of the effective diagnosis method for dental clinic, which is used to examine dental caries and gum disease. A patient needs to have a small film inserted in their mouth. The position and orientation of the film are properly adjusted by the dentist. An indicator cone which directs X-ray is set up outside the patient's mouth. The intraoral radiograph provide a dental perspective...
We have developed an array of sensors for the oral pathogen Streptococcus mutans (S. mutans) using an enzyme-linked immunosorbent assay (ELISA) on a polydimethylsiloxane (PDMS) device. The model bacterial analyte, S. mutans, has been implicated in the initiation and progression of dental caries. The PDMS was modified with 3-aminopropyltriethoxysilane (APTS) and glutaraldehyde to covalently crosslink...
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