How to scan implant in mouth?5 answersTo scan an implant in the mouth, various techniques and devices are available. One method involves using an oral scanner that generates a 3D model through non-contact scanning. This scanner combines visible and IR light sources to create a 3D duplication model, allowing precise confirmation of implant placement during surgery. Another approach utilizes a scan body designed to recognize the depth and location of an implant in the alveolar bone, coupled with a fixture that includes specific grooves for alignment. Additionally, an auxiliary polymeric device resembling a denture can aid in obtaining accurate complete-arch digital scans for edentulous patients, improving alignment and scan accuracy. These methods, including intraoral scanning devices and specialized fixtures, contribute to efficient and precise scanning of dental implants in clinical and laboratory settings.
What is the role of CBCT in the diagnosis and treatment of periodontal diseases?4 answersCBCT plays a crucial role in the diagnosis and treatment of periodontal diseases. It provides a complete 3D view of the maxilla, mandible, teeth, and supporting structures, allowing for a more accurate diagnosis, treatment planning, and monitoring, as well as analysis of outcomes compared to conventional 2D images. CBCT images show the nature and extent of bony defects with high accuracy, helping in the assessment of the severity of periodontal diseases. It allows for better visualization and analysis of the defect through the creation of 3D models, which provide a preliminary view of the defect, the number of existing bony walls, and aid in selecting the most appropriate treatment. CBCT provides highly precise assessment of bone topography, helping in assessing the exact type and depth of defects present and optimizing surgical treatment planning. CBCT also overcomes the limitations of conventional radiographs by generating 3D images necessary for the diagnosis of furcation involvement, intrabony defects, and implant placement.
What is the accuracy of intraoral scanning in single-unit implant dentistry?3 answersThe accuracy of intraoral scanning in single-unit implant dentistry varies depending on the specific scanner used. Several studies have evaluated the accuracy of different intraoral scanners for single-unit implant dentistry. Zhang et al. found that the True Definition (TD) and Xianlin (XL) scanners had the best trueness and precision for scanning single crown preparations. Sequeira et al. investigated the effect of implant placement depth on the accuracy of digital implant impressions and found that trueness and precision were highest when the implant was placed at 0mm depth with complete visibility of the scan body. These findings suggest that the accuracy of intraoral scanning in single-unit implant dentistry can be influenced by factors such as the specific scanner used and the depth and visibility of the implant placement.
What are the potential risks and benefits of MRI in patients with dental implants ?5 answersMRI in patients with dental implants poses potential risks and benefits. The risks include mutual interactions between the implant and the MRI device, which can result in potential patient risks. Adverse events have been reported, even with the release of more MRI conditional active hearing implants on the market. However, the literature suggests that displacement of orthopedic implants during MRI is infrequent, and radiofrequency-induced heating of implants is generally minimal. Therefore, MRI is considered safe in patients with orthopedic implants, although a risk-to-benefit ratio should be assessed to determine the clinical utility and necessity of the study. In terms of benefits, MRI can be used for accurate diagnosis and treatment planning in patients with dental implants. Dental magnetic resonance imaging (MRI) has been suggested as an alternative to cone beam computed tomography (CBCT) for implant planning, as it provides valuable information without the radiation dose associated with CBCT.
A review article about new concept of application of ultra sound and CBCT in dental implant planning ?5 answersCone-Beam Computer Tomography (CBCT) is a valuable tool for dental implant planning and assessment. It allows for visualization of bone height and width, root anatomy of adjacent teeth, and the location of vital structures such as the maxillary sinuses, mandibular canal, mental foramen, and incisive canal. CBCT imaging can also provide information on the buccolingual orientation of the inferior alveolar nerve (IAN) in the posterior mandible, which is important for avoiding iatrogenic injury during implant surgery. Additionally, CBCT technology has been used in forensic dentistry for comparative identification, age estimation, sex estimation, bitemarks analysis, and facial reconstruction. Furthermore, CBCT scans can be used to evaluate the effect of dental implant thread design on marginal bone loss, providing valuable information for implant success and longevity. Overall, CBCT imaging is a non-invasive and accurate technique that has various applications in dental implant planning and assessment, as well as in forensic dentistry.
How to do ultrasound work in wound healing?3 answersUltrasound works in wound healing by stimulating cellular behaviors and promoting tissue regeneration. The use of ultrasound can generate electric energy from piezoelectric materials, such as poly(vinylidenefluoride-co-trifluoroethylene) (P(VDF-TrFE))/barium titanate (BaTiO3) membranes, which can be used as a sustainable power source for charging LEDs and capacitors. Ultrasound can also trigger the piezoelectric effect of materials like FeWO4 nanorods, leading to the generation of reactive oxygen species (ROS) that exhibit superior antibacterial efficiency and prevent wound infection. Additionally, ultrasound can be used as an imaging modality to assess wound healing after implant-related surgeries, providing objective information on healing progress and potential complications. Ultrasound treatment can activate human dermal fibroblasts, increasing their proliferation, migration, and production of extracellular matrix components, which are important for wound healing and tissue regeneration. Overall, ultrasound has the potential to enhance wound healing through various mechanisms, including energy generation, antibacterial effects, and cellular activation.