The majority of complete dentures are not initially made for the rehabilitation of an edentulous jaw; in most cases, they replace an existing complete denture. Since the ability to adapt to a new complete denture decreases with age, the replica denture procedure represents a smart opportunity. The aim is to copy the clinically successful parts of the old prosthesis and to change the destroyed parts. There are many advantages of this technique, including increased patient acceptance, especially among older people who may not be able to adapt easily to a new prosthesis. The advantages of digital technology are very apparent in the creation of a replica prosthesis. Various cases are presented in the present article to illustrate the procedure and the advantages of this technique using the example of computer-aided fabrication with the Baltic Denture System. Keywords: CAD/CAM, complete dentures, milled prosthesis, replica denture

Background: The number of occlusal contacts per tooth, reproducibility, and repeated usage of the digital T-Scan III System (TS) with Sensor foil (SF) are compared in vivo with Hanel foil (HF). Materials and methods: The static occlusion of 20 volunteers (average age: 25 years) with complete natural dentition without reconstructions or temporomandibular disorders (TMDs) was tested using HF, and compared with those tested using TS (with SF). To test intraexaminer reliability, the contacts by the TS and HF were evaluated twice, with an interval of 6 months. Reproducibility was tested by using five different HFs or SFs in two volunteers. For the TS stress test, one foil was used twice in three volunteers. Results: Intraexaminer reliability was excellent. Overall, HF showed significantly more contacts (P = 0.001), especially in posterior teeth (P = 0.002); SF revealed significantly more contacts in anterior teeth (P = 0.003). Repeated assignment of occlusal contacts was reliable for HF but not for SF. The number of contacts was significantly less in the second usage of the same SF (P = 0.001). Conclusion: SF should not be used for occlusal analysis or occlusal adjustment. Keywords: occlusion, T-Scan, Hanel foil (HF), Sensor foil (SF), occlusal analysis, occlusal equilibration, occlusal indicator

Die digitale Herstellung von Zahnersatz hat auch in die Totalprothetik Eingang gefunden. Damit lassen sich Prothesen in deutlich weniger Arbeitsschritten anfertigen. Vorgestellt werden die beiden digitalen Systeme Baltic Denture System und Whole You Nexteeth sowie erste Erfahrungen mit ihnen. Die Prothesen haben eine sehr gute Passgenauigkeit und sind trotz der standardisierten Aufstellung ästhetisch ansprechend. Die statische Okklusion ist je nach System bereits bei der Eingliederung sehr gut bzw. bedurfte der Korrektur. Aufgrund der frästechnischen Herstellung aus vorgefertigten Kunststoffblöcken sind die werkstoffkundlichen Eigenschaften der Kunststoffe besser als bei analoger Herstellung. Keywords: Totalprothese, digitale Prothese, CAD/CAM, Baltic Denture System, Whole You Nexteeth