Der Beitrag erläutert das Konzept des virtuellen Klonens bezahnter Kiefermodelle anhand eines konkreten Patientenfalls. Mit dieser Methode lässt sich die Vorhersagbarkeit des Ergebnisses verbessern, indem das ideale Emergenzprofil des homologen kontralateralen natürlichen Zahns als Zielpunkt der Planung verwendet wird. Damit soll auch in anspruchsvollen Situationen vorhersagbar eine adäquate Ästhetik und Funktion erreicht werden. Keywords: Ästhetik, Klonen, Implantatprothetik, Vorhersagbarkeit

Artificial intelligence (AI) encompasses a broad spectrum of emerging technologies that continue to influence daily life. The evolution of AI makes the analysis of big data possible, which provides reliable information and improves the decision-making process. This article introduces the principles of AI and reviews the development of AI and how it is currently being used. AI technology has influenced the health care field because of the need for accurate diagnosis and superior patient care. In order to understand the trend of AI in dentistry, electronic searching was carried out, combined with approaching individual companies to obtain the details of AI-based services. The current applications of AI in clinical dentistry were introduced and summarized. In the future, the AI-based comprehensive care system is expected to establish high-quality patient care and innovative research and development, facilitating advanced decision support tools. The authors believe that an innovative inter-professional coordination among clinicians, researchers, and engineers will be the key to AI development in the field of dentistry. Despite the potential misinterpretations and the concern of patient privacy, AI will continue to connect with dentistry from a comprehensive perspective due to the need for precise treatment procedures and instant information exchange. Moreover, such developments will enable professionals to share health-related big data and deliver insights that improve patient care through hospitals, providers, researchers, and patients. Keywords: artificial intelligence, big data, caries detection, future dentistry, machine learning

The focus for the achievement of complete success in the esthetic zone has traditionally been on addressing deficiencies of intraoral hard and soft tissue. Often, these deficiencies are accompanied by esthetic concerns regarding the lips that are routinely neglected by the dental team. A predictable plastic surgery technique - the lip lift - has been used for decades to enhance lip esthetics by shortening the senile upper lip to achieve a more youthful appearance. Over the years, this technique has been refined and used in many different ways, allowing its routine incorporation into full facial esthetic planning. Through restoration of the upper lip to its optimal position, the artistry of the dentist and dental technician can truly be appreciated in the rejuvenated smile. By the introduction of this minimally invasive surgical technique to the dental community, patients stand to benefit from a comprehensive orofacial approach to anterior dental esthetic planning.

Wenn mit einer Behandlung eine ästhetische Verbesserung im Frontzahnbereich erreicht werden soll, werden üblicherweise Unzulänglichkeiten bei den intraoralen Hart- und Weichgeweben therapiert. Diese Defizite sind jedoch häufig mit Problemen der Lippenästhetik verbunden, die vom zahnärztlichen Team in der Regel nicht mit einbezogen werden. Dabei wird seit Jahrzehnten in der plastischen Chirurgie eine vorhersagbare Technik, der Oberlippenlift, angewendet. Mit dieser Technik wird die gealterte Oberlippe verkürzt, um ein jugendlicheres Aussehen zu erreichen und die Lippenästhetik zu verbessern. Im Laufe der Jahre wurde diese Technik verfeinert und vielfältig einsetzbar gemacht, sodass sie inzwischen routinemäßiger Bestandteil in gesichtsästhetischen Gesamtplanungen ist. Wird die Oberlippe wieder in ihre optimale Position zurückgeführt, sind auch die Ergebnisse des zahnärztlichen und zahntechnischen Teams im verjüngten Lächeln vollständig sichtbar. Mit der Einführung dieser minimalinvasiven chirurgischen Technik in die praktische Zahnmedizin könnten die Patienten von einem umfassenden orofazialen Ansatz bei der Planung der Frontzahnästhetik profitieren.

Bonded porcelain restorations are a predictable and durable treatment option that can restore not only the strength and function of the teeth but also the esthetic appearance. One important issue in adhesive dentistry is the preservation of sound enamel. Following biomimetic principles, employing minimally invasive applications and adhesive technologies is of paramount importance for successful restorations. While it is widely accepted that minimally invasive restorative techniques should be favored, there is still some controversy over the noninvasive approaches. The purpose of this article is to question the complete "no-prep veneer" concept due to the possible negative effects on periodontal health caused by excessive contour and overhangs of the ceramic restoration, and to propose a new method to assess the quality and longevity of veneers with a partial-prep concept. Keywords: adhesive luting, biomimetic principles, bonded porcelain restorations, esthetic, minimally invasive treatment modalities, scanning electron microscopy

The restoration of anterior teeth is frequently a demanding mission. Patients generally have high expectations for the anterior region, which makes the emotional side of treatment especially important. When this involves discolored endodontically treated teeth, consensus can hardly ever be found as to the chosen approach. Bleaching with direct composites is undoubtedly the most conservative choice for these cases. However, this may require more maintenance (touch-up bleaching and repairs) in the long term, which is an important issue for adult patients. On the other hand, bonded porcelain veneers represent a more 'high-end' option, as they recover the original biomechanics of the intact tooth, allow an optimal masking of the substrate, remain stable, and have a reasonable biological cost when compared to full-coverage crowns. This strategy is explained in this article and documented with a clinical case. We describe treatment planning based on the biomimetic concept, taking into consideration what is possible with current materials and techniques when combined with the patient's particular needs, including the introduction of an innovative step during dentin sealing - the microsuction. The laboratory work was totally accomplished by 'teledentistry', with no direct contact between the dental technologist and the patient.

Die Restauration von Frontzähnen ist häufig anspruchsvoll. In der Regel erwarten die Patienten nach einer Frontzahnbehandlung ein angenehmes Aussehen, wobei der emotionale Aspekt ein großes Gewicht bekommt. Bei verfärbten wurzelkanalbehandelten Zähnen lässt sich kaum ein Konsens bezüglich des gewählten Vorgehens finden. Die konservativste Option ist ein Bleaching in Kombination mit direkten Kompositrestaurationen. Allerdings kann dies langfristig mehr Nachsorgeaufwand (Bleaching-Auffrischungen, Reparaturen) bedeuten, was für erwachsene Patienten ein wichtiger Aspekt ist. Eine hochwertigere Option sind adhäsive Keramikveneers, da sie die ursprüngliche Biomechanik des gesunden Zahns wiederherstellen, die darunterliegende Substanz optimal maskieren, langfristig stabil bleiben und verglichen mit Vollkronen akzeptable "biologische Kosten" haben. Diese Option wird im vorliegenden Artikel erläutert und an einem klinischen Fall demonstriert. Die Autoren beschreiben die Behandlungsplanung nach einem biomimetischen Konzept und berücksichtigen dabei, was mit heutigen Materialien und Techniken in Abstimmung mit den individuellen Patientenwünschen möglich ist. Ein innovativer Arbeitsschritt ist die Mikroabsaugung bei der Dentinversiegelung. Die zahntechnische Arbeit erfolgte nach dem Prinzip der "Telezahnmedizin", d. h. ohne Kontakt zwischen Zahntechniker und Patientin.

Objective: The purpose of this study was to evaluate periimplantitis prevalence in patients using implant-supported fixed prostheses that did not have any routine maintenance care. Method and Materials: A total of 161 implants (27 patients) were evaluated in patients using implant-supported fixed prostheses. Collected data included information related to patient general health and local factors such as characteristics of implants, time in function, type of loading, positioning, Modified Bleeding Index, bacterial plaque, bleeding on probing (BOP), marginal recession, probing depth (PD), keratinized mucosa, and radiographic bone loss (BL). Factors related to the prostheses were also evaluated. The exclusion criteria were patients that have had any follow-up visit for plaque control of the prosthesis and/or the implants. Results: From a total of 161 implants, 116 (72%) presented without peri-implantitis (PD > 4 mm + BOP + BL > 2 mm) while 45 (28%) had some sign of the disease. Implants placed in the maxilla were 2.98 times more likely to develop the disease (P .05). Moreover, patients aged ≤ 60 years old were 3.24 times more likely to develop peri-implantitis (P .05). Another analysis with statistical relevance (P .05) was that implants with less than 3 mm interimplant distance were three times more likely to have peri-implantitis. There was no statistical relevance considering other analyses. Conclusion: It can be concluded that patients aged ≤ 60 years have a greater chance of presenting periimplantitis, as well as for implants positioned in the maxilla and those placed with an interimplant distance 3 mm. Keywords: fixed prostheses, local factors, marginal bone loss, peri-implantitis, prevalence