Dental implantology update最新文献

Because conventional dental impression methods often are imprecise and subject to guesswork, and because these methods often are uncomfortable for the patient and expensive for the practitioner, the Cadent iTero system was created to help reduce or eliminate those negative aspects of dental impressions. The system's enhanced visualization and real-time analytical tools enable clinicians to adjust measurements before completing the intraoral digital scanning of dental patients. And because the iTero technology lends itself for use with all restorative procedures and materials via a network of dental laboratory partners, implantologists as well as other dentists interested in quality production of restorations can lower costs while assuring precise and patient-pleasing results.

DEXIS intraoral radiography provides clarity of image, a software interface that is intuitive and easy to use, and a flexibility that allows it to network reliably with a practice's existing computer systems. For oral implantology in particular, which is highly dependent on the proper preoperative treatment planning and appropriate radiographic evaluation of the edentulous ridge, modem imaging techniques such as those provided by DEXIS are facilitating the trend toward the nonspecialist place-ment of implants. DEXIS can be used effectively to assess the quantity and quality of the bone present and to visualize the location and relationships between critical internal anatomic structures for implant placement. The company's patented PerfectSize intraoral sensor replaces traditional intraoral X-ray film, providing images that are particularly useful as adjuncts to implant planning and placement.

Though no single, specific occlusal pattern has been developed that is ideal for oral implantology, research suggests some general criteria for deciding on a particular occlusal pattern that will help reduce cuspal interferences and lessen horizontal or lateral forces on the fixtures. Anticipated occlusal and chewing forces need to be taken under consideration for any implant-supported prosthesis. In addition, opposing dentition, as well as potential parafunctional mandibular movements, should be noted. Tekscan's T-Scan Occlusal Analysis System can help clinicians meet the needs of their patients for reliable measurements of occlusal biting forces. The T-Scan III System is Tekscan's most recent attempt to help dental clinicians obtain consistent and useful occlusal data for the placement, analysis, and repair of dental implants.

Early in the development of implant technology, conventional dental imaging techniques were limited for evaluating the patient for implant surgery. During the treatment-planning phase, the recipient bed is routinely assessed by visual examination and palpation, as well as by periapical and panoramic radiology. These two imaging modalities provide a two-dimensional image of the mesiodistal and occlusoapical dimensions of the edentulous regions where the implants might be placed. When adequate occlusoapical bone height is available for endosteal implants, the buccolingual width and angulation of the available bone are the most important criteria for implant selection and success. However, neither buccolingual width nor angulation can be visualized on most traditional radiographs. Although clinical examination and traditional radiographs may be adequate for patients with wide residual ridges that exhibit sufficient bone crestal to the mandibular nerve and maxillary sinus, these methods do not allow for the precise measurement of the buccolingual dimension of the bone or assessment of the location of unanticipated undercuts. Because of these concerns, it is necessary to view the recipient site in a plane through the arch of the maxilla or mandible in the region of the proposed implants. Implant surgeons soon recognized that, for the optimum placement of implants, cross-sectional views of the maxilla and mandible are the ideal means for providing necessary preoperative information. For complex cases where multiple implants are required or where anatomical measurements are crucial, but also increasingly for more routine cases, more and more clinicians are recommending CT scan imaging procedure such as that offered by TeraRecon's Dental CBCT system. Because of its ability to reconstruct a fully three-dimensional model of the maxilla and mandible, CBCT provides a highly sophisticated format for precisely defining the jaw structure and locating critical anatomic structures. CBCT scans, in conjunction with software that renders immediate treatment plans using the most real and accurate information, provide the most precise radiographic modality currently available for the evaluation of patients for oral implants.