![]() The denture replication method links proven methods of obtaining functional impressions using soft reline materials to a straightforward digital process. The technique has some advantages such as allowing the clinician to copy the tooth shape and contours of the existing prosthesis while modifying borders and intaglio surfaces. The replication technique is a method of fabricating new removable complete dentures utilizing the existing prosthesis as the foundation for a new denture. The proposed denture replication method shows a predictable workflow for fabricating complete dentures for patients with existing dentures. In high and medium palates, the scraping could be less pronounced. The results suggest compensating for the palatal misfit that occurs with autopolymerising resins by scraping a postdam of an approximately 0.7 mm depth to the master cast, decreasing towards the anterior and lateral areas. The largest misfit was observed in the palatal midline area (flat-palate average median: 685 µm high and medium palates: 620 µm) decreasing towards the lateral and anterior regions. ![]() It was largest for the flat palate and smallest for the high palate. The shape of the palate had a significant impact (median p = 0.0435), but not the resin type (median p = 0.2575). The misfit was captured by taking a reline impression with a highly fluid silicone, the dimensions of which were measured with a flat-bed scanner. The aim of this study was to evaluate the three-dimensional fit of the posterior palatal seal of maxillary complete dentures with the original impression, and to give recommendations for scraping.įour autopolymerising resins were used to manufacture 40 palatal plates each for high, medium and flat palates (total n = 120). However, the polymerization process may introduce a distortion of the denture body. The majority of complete dentures are still conventionally manufactured using a flask-and-pack technique. The advantages of CECDs include a reduced number of appointments, saving chairside time, a digital workflow allowing easy reproducibility and greater patient satisfaction with a better fit. For CECDs, the resin can be modified and cross-linked to improve its mechanical properties. Polymethyl methacrylate is used as the denture base material for conventional dentures. CAD/CAM allows for precision and reproducibility with fewer procedures compared to conventional dentures. Patients reported greater satisfaction with computer-engineered complete dentures (CECDs) due to better fit, reduced chair time, shorter appointments, and fewer post-insertion visits. Overall, computer-engineered complete dentures have several advantages over conventional dentures. Eighteen relevant articles were included in this review. The keywords used were "computer-engineered complete dentures", "CAD/CAM complete dentures", "computer-aided engineering complete dentures", and "digital complete dentures". The PubMed/Medline, Science Direct, Cochrane, and Google Scholar databases were searched for studies published in English within the last 11 years (from 2011 to 2021). This study aimed to provide a comparative review of complete dentures manufactured using CAD/CAM and conventional methods. CAD/CAM supports using a digital workflow reduce the number of visits, chair time, and laboratory time, making it attractive to patients. Posteriorly, the teeth were adapted and bonded into the milled sockets of the milled base.ĬAD/CAM technology is gaining popularity and replacing archaic conventional procedures for fabricating dentures. For the definitive final denture, the denture base and the basal surfaces of the conventional denture teeth were milled according to the individual clinical situation. With the presented technique, the maxillomandibular relation (MMR) and the ideal setup of the tooth arrangement are developed by using occlusion rims and trial setup made with RP. ![]() The presented workflow for complete denture fabrication presents a totally wax-free manufacturing process, combining rapid prototyping (RP) and rapid milling. Also, there is a decrease in the porosity when compared to a conventionally processed denture, and consequently there is a decrease in the retention of Candida albicans on the denture base. The incorporation of computer-aided design/computer-aided manufacturing (CAD/CAM) technology into complete denture fabrication brings about several advantages to the fabrication process, providing better predictability of the desired outcomes and high accuracy of denture fit, mainly because the milling of prepolymerized acrylic resin eliminates the shrinkage of the acrylic base.
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