Josef Schweiger

Josef Schweiger
Ludwig-Maximilians-Universität in Munich | LMU · Faculty of Medicine

Master of Science

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129
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Publications

Publications (129)
Article
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Im April dieses Jahres wurde die neue Schleifeinheit EASY Mill 4 (orangedental, Biberach) einer breiten Öffentlichkeit vorgestellt. In diesem Artikel beschreiben die Autoren ihre ersten Erfahrungen mit dieser CNC-Schleifmaschine, der dazugehörigen CAM-Software und einem neuen Zirkoniumdioxidmaterial. Zudem stellen sie zwei Patientenfälle dar.
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Digitale Technologien haben sich in den Praxen weitgehend etabliert und die Arbeitsabläufe effizienter gestaltet. Mit dem 3-D-Druck hat sich in der vergangenen Dekade eine weitere Technologie zur Praxisreife entwickelt, die faszinierende Möglichkeiten bietet und Perspektiven eröffnet, die Arbeitsabläufe und die Patientenversorgung weiter zu verbess...
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Die Innovationsrate und die Marktdurchdringung im Bereich digitaler Dentaltechnologien haben sich in den letzten Jahren enorm beschleunigt. Während sich bei den subtraktiven Fertigungsverfahren seit längerem ein beachtliches Entwicklungs- und Produktivitätsniveau bei breitem Indikationsspektrum etabliert hat, haben additive Verfahren (3D-Druck) bes...
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Objective: This article highlights the feasibility of the additive fabrication of ultra-thin veneers made of lithium disilicate using the lithography-based ceramic manufacturing (LCM) method. Clinical Considerations: An esthetical appealing restoration of anterior teeth with thin ceramic veneers is considered one of the ultimate challenges in rest...
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Die Digitalisierung in Zahnmedizin und Zahntechnik hat eine enorme Geschwindigkeit erreicht. Kaum eine Praxis oder ein Labor, in dem kein Scanner oder eine Fräsmaschine steht. Seit mehr als 25 Jahren werden analoge Fertigungsschritte zunehmend durch digitale Möglichkeiten ersetzt. Waren es am Anfang vorwiegend einzelne analoge Schritte, die durch M...
Article
Purpose: To evaluate the behavior of hybrid abutment crowns fabricated from monolithic lithium disilicate ceramic (LDC) and to compare the influence of different in-vitro artificial aging protocols. Material and methods: 32 monolithic hybrid abutment crowns of monolithic LDC were fabricated. 24 were artificially aged applying 3 different protoco...
Article
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Mithilfe der additiven Multimaterialfertigung können aus verschiedenen Legierungen bestehende Teile in digitalen Prozessketten gefertigt werden. In dem Beitrag wird die Anwendbarkeit der Technologie für die Dentalbranche anhand zweier Applikationen gezeigt und bewertet.
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Objectives: Bone resorption around implants could influence the resistance of the implant abutment complex (IAC). The present in vitro study aimed to assess the stability to static fatigue of implants presenting different levels of bone losses and diameters. Materials and methods: Ninety implants with an internal conical connection with 3 differ...
Article
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Seit mehr als 25 Jahren werden analoge Fertigungsschritte zunehmend durch digitale ersetzt. Einzig die Komplexität des Produktes begrenzt den Einsatz digitaler Technologien, sodass bei der Fertigung oft noch analoge Teilschritte notwendig sind. Die Gründe dafür liegen unter anderem auch darin, dass die analoge Fertigung noch kostengünstiger ist ode...
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L’imitation de l’esthétique naturelle, en particulier dans la zone des dents antérieures, représente un défi permanent en dentisterie, car on évolue dans un domaine qui, d’une part, pose les plus hautes exigences au prothésiste dentaire en raison de la structure multicouche des dents naturelles et où, d’autre part, les demandes de solutions effi- c...
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Die Versorgung von Frontzahndefekten mit dünnen Verblendschalen aus Keramik gilt als „Königsdisziplin“ in der zahnärztlichen Prothetik. Die Herstellung kann auf verschiedene Weisen erfolgen. Bisher werden analoge und digital subtraktive Fertigungswege angewendet. Aufgrund der geringen Schichtstärke sind beide Fertigungswege für den Anwender eine He...
Article
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Purpose: Hybrid abutment crowns (HACs) made from monolithic ceramics represent an efficient option for single restorations on implants. However, long-term data are scarce. The purpose of this clinical trial was to evaluate the survival and complication rates of CAD-CAM fabricated HACs over a time period of at least 3.5 years. Materials & methods:...
Article
Pronounced defects of the dental hard tissue can be caused by different etiological factors. Most frequently, they are associated with changes in the vertical dimension of occlusion, which also may influence the condylar positions. Leading to irreversible loss of tooth structure, these defects can have dramatic functional and esthetic consequences...
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Objective: This article highlights a CAD/CAM complete-mouth rehabilitation in an 82-year-old patient by means of a complete maxillary prosthesis and mandibular implant- and tooth-supported fixed restorations made from multilayered zirconia. Clinical considerations: Comprehensive complete-mouth rehabilitations in elderly patients with adaptation...
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The thickness of a material has a significant impact on its fracture load. The aim of the study was to find and describe a mathematical relationship between the material thickness and the fracture load for dental all-ceramics. In total, 180 specimens were prepared from a leucite silicate ceramic (ESS), a lithium disilicate ceramic (EMX), and a 3Y-T...
Patent
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Verfahren zur Herstellung eines Zahnersatzes, wobei: - ein Gerüst (10) bereitgestellt wird, und - eine Verblendung (12) für das Gerüst (10) durch einen Vorgang hergestellt wird, der ein Tiefziehen einer Folie (38) auf dem Gerüst (10) umfasst, - wobei bei der Gestaltung einer Außenseite (20) des Gerüsts (10) berücksichtigt wird, dass die Folie (38)...
Article
The computer-aided manufacture of esthetically pleasing monolithic dental restorations presents with specific challenges. One vital parameter to consider is the translucency of the materials. Previous studies have proven a correlation between translucency and material thickness for various all-ceramic materials. The aim of the present study was to...
Article
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Purpose: This in vitro study aimed to investigate the long-term performance, stability, and fracture mode of monolithic hybrid abutment crowns, and the effect of different materials on the implant-abutment interface (IAI). Methods: Eighty monolithic hybrid abutment crowns luted on titanium bases were manufactured from 3Y-TZP zirconia (ZY3), “Gradie...
Article
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Restaurationen aus Lithiumdisilikat wurden bisher entweder per analoger Presstechnik oder über die digitale subtraktive Bearbeitung mithilfe von CNC-Schleifmaschinen hergestellt. Auf der IDS 2021 stellte die Fa. Lithoz (Wien, Österreich) die additive Fertigung mithilfe der Lithoz LCM-Technologie vor. Anhand einer Eckzahnkrone und vier Seitenzahnkro...
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In einer aktuellen Machbarkeitsuntersuchung der Firma Lithoz (Wien, Austria) konnte gemeinsam mit dem zahntechnischen Labor der Poliklinik für Zahnärztliche Prothetik der LMU München die additive Herstellung von vollkeramischen Kronen aus Lithium-Disilikat in eindrücklicher Weise demonstriert werden. Das dazu verwendete LCM-Verfahren der Firma Lith...
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The aim of this in vitro study is to investigate the bonding properties of a 3D-printable permanent composite material in comparison to milled composite materials. The tested materials are 3D-printed BEGO VarseoSmile Crown plus (VA1_ab, VA1_nt, VA2_ab, VA2_nt), Vita Enamic (EN1, EN2), and 3M Lava Ultimate (UL1, UL2) (N = 64; n = 8). For this purpos...
Article
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Silicate ceramics have been the top material for more than 100 years when it comes to replacing lost tooth substance with restorations that look as natural as possible. Charles Henry Lund, a US dentist, first invented an all-ceramic crown restoration made of silicate ceramics as early as 1900. However, the technical application was very complicated...
Article
Purpose: To evaluate the shear bond strength (SBS) of different digital veneering techniques for zirconia and to critically discuss its suitability for application in single-implant prosthetics. Materials and methods: A total of 112 square-shaped zirconia specimens were provided with four different veneering materials (n = 28 per group): a glass...
Article
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Beim Expertise-Kongress der Zahntechnik plus-Veranstaltung des VDZI in Leipzig stellte Josef Schweiger im Rahmen seines Vortrags „Update digitale Dentaltechnologie“ neue innovative Technologien aus dem Bereich der digitalen Dentaltechnologie vor. Im Fokus der Betrachtung standen 5 Themen aus den Bereichen „Herausnehmbarer Zahnersatz“, „Festsitzende...
Article
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Objective This paper presents a novel digital workflow that expedites and facilitates the manufacturing of high-end full-ceramic restorations based on “Print and Press”-Technology combined with 3D-printed colored 3D-models. Clinical considerations Despite ongoing innovations and developments in the digital workflow, the precision, and the final es...
Article
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Data on the long-term behavior of computer-aided designed/computer-aided manufactured (CAD-CAM) resin-based composites are sparse. To achieve higher predictability on the mechanical behavior of these materials, the aim of the study was to establish a mathematical relationship between the material thickness of resin-based materials and their fractur...
Article
Aim: To investigate retentive forces (RFs) of CAD/CAM-milled and conventionally cast secondary crowns (SCs) after artificial aging in an in vitro study. Materials and methods: Forty artificial premolars were manufactured and provided with 40 primary crowns (PCs) milled from a high noble metal alloy. SCs were fabricated from the same alloy. Ten S...
Article
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PURPOSE: The aim of this study was to evaluate the efficiency of occlusal and interproximal adjustments of single implant crowns (SIC), comparing a digital cast-free approach (CF) and a protocol using 3D printed casts (PC). MATERIALS AND METHODS: A titanium implant was inserted at position of lower right first molar in a typodont. The implant posit...
Book
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En sectores importantes como la fotografía, las comunicaciones y el mercado del libro, se ha producido en los últimos años una revolución digital que ha traído consigo importantes cambios. Si la transición a la era digital no se reconocía en una fase temprana y las empresas no reaccionaban en consecuencia, solían surgir considerables dificultades e...
Article
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Polycarbonates are polymers of bisphenol A (BPA), a well-known endocrine disruptor. This study evaluated the release of BPA from polycarbonate crowns that were (1) milled from Temp Premium Flexible (ZPF, Zirkonzahn, Italy) or Tizian Blank Polycarbonate (TBP, Schütz Dental, Germany), or (2) 3D-printed (Makrolon 2805, Covestro, Germany). Commercial p...
Article
Statement of problem: Making impressions of 2-piece implants is typically associated with the repeated disassembly and reassembly of superstructures and related to soft-tissue trauma. Intraoral scanning of 1-piece zirconia implants is problematic because scan bodies are not readily available. Whether using virtual hybrid casts generated by merging...
Article
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Abstract The aim of this study was to quantify and to compare the wear rates of premolar (PM) and molar (M) restorations of lithium disilicate ceramic (LS2) and an experimental CAD/CAM polymer (COMP) in cases of complex rehabilitations with changes in vertical dimension of occlusion (VDO). Twelve patients with severe tooth wear underwent prosthetic...
Article
Background: The esthetic outcome of a dental restoration largely depends on the translucency of the materials used, especially for monolithic restorations. Research has been published reporting a correlation between translucency and material thickness. However, no mathematical formula has been described yet. The aim of the present study was to det...
Article
Ectodermal dysplasia (ED) is one of the congenitally syndromic diseases with dental anomalies. This syndrome manifests in various forms and usually requires early restorative therapy to restore esthetics and function in young patients. The restorative approaches vary greatly and range from minimally invasive shape corrections using composite build-...
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Natürliche Zähne sind kein Zufallsprodukt der Natur. Im Laufe der Evolution haben sich die Zähne in ihrer Gestalt und in ihrem Aufbau als diejenige optimale Form entwickelt, die dem Menschen das Überleben mit der höchsten Wahrscheinlichkeit ermöglicht. Die Natur spielt nicht. Zähne sind ein Erfolgsmodell und halten bei guter Pflege ein Leben lang....
Article
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Popular media now often present 3D printing as a widely employed technology for the production of dental prostheses. This article aims to show, based on factual information, to what extent 3D printing can be used in dental laboratories and dental practices at present. It attempts to present a rational evaluation of todays´ applications of 3D printi...
Article
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VarseoSmile Crown plus ist das weltweit erste keramisch gefüllte Hybridmaterial für den 3-D-Druck permanenter Einzelkronen, Inlays, Onlays und Veneers. In einer Reihe präklinischer wissenschaftlicher Studien wurden verschiedenste Aspekte untersucht. In diesem Bericht werden die Ergebnisse zum Dezementierungsverhalten additiv gefertigter Kronen aus...
Article
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Polycarbonat ist als Werkstoff in der Zahntechnik für die Herstellung von Aufbissschienen in den Fokus gerückt. Inzwischen bieten mehrere Hersteller das Material in Rondenform für die subtraktive Bearbeitung an. Wie ist diese im Dentalbereich neue Werkstoffgruppe zu beurteilen? Josef Schweiger, Laborleiter des Zahntechniklabors an der LMU München,...
Patent
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The invention relates to a dental restoration, having a base which in particular comprises an implant (1) in combination with an abutment (4), and a supraconstruction (3) which is fixed to the base, in particular by adhesive bonding, wherein the base has a screw connection having a screw head which extends over or on the base. Said screw head conne...
Patent
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Die vorliegende Erfindung schlägt ein System nach Anspruch 1 vor. Das System umfasst einen Einbringpfosten zum Einbringen eines Implantats in einen Kieferknochen vor, wobei der Einbringpfosten einen ersten Antriebsabschnitt zur Übertragung eines Drehmoments auf den Einbringpfosten und einen zweiten Antriebsabschnitt zur Übertragung eines Drehmoment...
Patent
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A denture base blank a set comprising at least one denture base blank, and a method for production of a denture base for production of a total or partial denture with a subtractive CAM method, wherein the denture base blank comprises a plastic material or a wax, wherein the denture base blank is pre-formed, an wherein a dental arch or a dental arch...
Article
Purpose: To report on pilot tests for a planned study on single implant-supported crowns made from different restorative materials using finite element analysis (FEA) and in vitro load-to-failure testing. Materials and methods: Within this pilot study, FEA was conducted using Ansys 2019 R2 to simulate stress and deformation for implant-supported...
Article
Objective The elution of unpolymerized (co-)monomers and additives from methacrylic resin-based materials like polymethyl methacrylate (PMMA) can cause adverse side effects, such as mutagenicity, teratogenicity, genotoxicity, cytotoxicity and estrogenic activity. The aim of this study was to quantify the release and the cytotoxicity of residual (co...
Article
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In der Zahnmedizin und der kranio-maxillofazialen Chirurgie werden verschiedene Keramikmaterialien in unterschiedlichen klinischen Situationen und bei einer Vielzahl von Indikationen eingesetzt. Zu diesen Indikationen gehört die Anwendung von Keramik als Knochenersatzmaterial, als Zahnimplantat oder als prothetisches Teil. Während bei der erstgenan...
Article
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Objectives: To present a digital approach to measure and compare material wear behavior of antagonistic first molar restorations made of an experimental CAD/CAM composite (COMP) and lithium disilicate ceramic (LS2) in patients with reconstructed vertical dimension of occlusion (VDO) after generalized hard tissue loss. Methods: A total of 12 pati...
Article
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Die Entwicklungsgeschwindigkeit im Bereich der Digitalen Zahn-heilkunde hat ein enormes Tempo angenommen. Für Praktiker wird es zunehmend schwieriger, auf dem aktuellen Stand zu bleiben und das Potenzial neuer Technologien und Konzepte rea-listisch einzuschätzen. Im nachfolgenden Beitrag sollen einige der nach Ansicht der Autoren interessantesten d...
Article
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Background: Computer-guided implant surgery is currently based on radiographic techniques exposing patients to ionizing radiation. Purpose: To assess, whether computer-assisted 3D implant planning with template-guided placement of dental implants based on magnetic resonance imaging (MRI) is feasible. Materials and methods: 3-Tesla MRI was perf...
Article
For decades, double crowns in different variations have proven to be reliable attachments in removable prosthetics. Supported by teeth and implants, they provide proper retention, a considerable degree of chewing comfort, and satisfying esthetics. A wide range of applications, optimal oral hygiene capabilities, and almost unlimited expandability ar...
Article
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Die Entwicklungsgeschwindigkeit im Bereich der digitalen dentalen Fertigungstechnologien hat ein enormes Tempo angenommen. Während im Bereich der subtraktiven Verfahren bereits ein hohes Produktivitätsniveau mit optimalen Passungen erreicht ist, gewinnen additive Verfahren (3-D-Druck) zunehmend an Bedeutung. Aber auch Kombinationen aus verschiedene...
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Das Sachverständigenpapier „Status Präsens 2020: die additiven CAD/CAM-gestützten Fertigungstechnologien im zahntechnischen Labor“ gibt eine objektive Darstellung der derzeitigen additiven digitalen Fertigungsmöglichkeiten im zahntechnischen Labor. Ziel ist es, der Öffentlichkeit realistisch das Anwendungsspektrum der additiven CAD/CAM-Fertigung be...
Book
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The new publication “CAD/CAM in digital dentistry” in English closes an up to this point existing gap in the dental literature. The tremendous speed of development in digital dentistry requires profound knowledge in the various areas of the digital workflow. This book is a thread running from data acquisition to data processing through to digital p...
Article
Background: The Dental Motion Decoder system (DMS-System) is a medical device based on magnetic field technology that records mandible movements. The data can be used to program an articulator or can be directly processed over a computer-aided design (CAD) interface. The present study aimed to assess the reproducibility of this system in vitro and...
Article
Durch den Einsatz der Überpresstechnik bei implantatgetragenen Versorgungen sollten komplexe Arbeitsabläufe vereinfacht werden. Der Beitrag beschreibt einen ersten Konstruktions-Vorschlag, der gefräst wurde. Dieser Prototyp gab Aufschluss über die sinnvolle Position der Zähne. Die navigierte Implantatplanung baute auf dem Datensatz auf und bot so e...
Article
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Purpose of Review Within this review, the current needs of the dental industry will be discussed with special focus on additive manufacturing (3D printing) of dental restorations. Up to now, subtractive manufacturing methods are state of the art for production of monolithic restorations. Here, the challenges and opportunities currently existing for...
Article
Purpose: The purpose of this study was to evaluate internal porosities, retentive force values and survival of cobalt-chromium (Co–Cr) alloy clasps fabricated by direct metal laser-sintering (DMLS) and compare them to conventionally cast clasps. Methods: Embrasure clasps were digitally designed fitting teeth 35 and 36 on identical metal models (N...
Chapter
Today, implant-retained restorations need to fulfill esthetic and functional objectives and have become increasingly important in the practice of modern dentistry. They should integrate into a versatile environment and result in a natural, harmonious appearance. This environment comprises teeth, soft tissue (gingiva), and the surrounding lips, whic...
Article
The digital workflow presented here allows for fabrication and placement of a definitive custom abutment at the time of tooth extraction and guided immediate implant placement, thus preserving soft tissue anatomy. Since abutment design was based on the shape of the original tooth, it represented a de facto emergence‐analog that provided ideal soft...
Article
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Objectives: The purpose of the present study was to evaluate the retentive forces of CAD/CAM-fabricated polyetheretherketone (PEEK) secondary crowns on zirconia primary crowns over an artificial aging period representing 10 years of clinical service and compare them to electroformed secondary crowns made from pure gold. Material and methods: Impla...
Article
The introduction of adhesive techniques in combination with translucent restorative materials has greatly influenced treatment concepts in fixed prosthodontics. Modern production technologies offer access to new polymer materials that provide innovative pre-treatment options for complex prosthetic rehabilitations. Additionally, computer-aided desig...
Article
Modern oral implantology and implant prosthetics depend on comprehensive diagnostics and precise planning to ensure the desired outcome and meet the patient's and the dentist's expectations. In this context, digital implant planning and guided implant surgery based on three-dimensional radiographic data and the digitised intraoral surfaces can be o...
Article
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Die digitale Herstellung von Modellen stellt eine wesentliche Schlüsselstelle im digitalen Workflow dar. Nur wenn die digital angefertigten Modelle die An- forderungen an Genauigkeit, Langzeitstabilität und Dimensionstreue erfüllen, wird diese Technologie in der Zahnheilkunde akzeptiert werden. Darüber hinaus sollte der künftige Mehrwert digital he...
Article
Objective In severe congenital or acquired orofacial anomalies, both dental esthetics and function are usually compromised. In particular, the esthetic ideas of the final desired appearance may differ from patient to patient, as the human esthetic sensibility differs significantly. Especially in complex cases, digital technology today offers outsta...
Article
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In many areas of restorative dentistry, metal-free materials offer an alternative to metal-based restorations while ensuring high levels of biocompatibility and esthetics. Rapidly evolving CAD/ CAM technology has significantly expanded the range of materials available, providing access to materials classes and their combinations not previously avai...
Article
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In many areas of restorative dentistry, metal-free materials offer an alternative to metal-based restorations while ensuring high levels of biocompatibility and esthetics. Rapidly evolving CAD/CAM technology has significantly expanded the range of materials available, providing access to materials classes and their combinations not previously avail...
Article
Statement of problem: Determining the relationship between variable thicknesses and the translucency of dental ceramics is essential for optimizing esthetics in different clinical situations. Purpose: The purpose of this in vitro study was to analyze the relationship between layer thickness and translucency of 2 multi-layered monolithic zirconia...
Article
This case report introduces a temporary denture with reduced extension stabilized in the edentulous maxilla as a possible treatment method for patients with a severe gag reflex, allowing them to test the function, esthetics, and tolerance of the denture prior to hard tissue augmentation and implant placement. A 4-mm implant was placed in the centra...
Article
Die moderne Implantologie und Implantatprothetik erfordern eine umfangreiche Diagnostik und präzise Planung, um den erwünschten Erfolg zu gewährleisten und den hohen Ansprüchen zu genügen. In diesem Zusammenhang können die dreidimensionale, digitale Implantationsplanung und navigierte Implantation hervorragende Dienste leisten, da sich mit diesen T...
Article
The rehabilitation of the edentulous patient with complete dentures is still an essentiell aspect of dental prosthetics. Modern digital manufacturing technologies habe made it possible to produce even complete dentures digitally. This has several advantages, specially regarding the properties of the denture material. In addition, the use of digital...
Article
Im allgemeinen Sprachgebrauch wird mittlerweile der Begriff 3-D-Druck als Synonym für alle additiven Fertigungsverfahren (engl. Additive Manufacturing = AM) angewandt. Aus der Sicht des Fachmanns ist diese Bezeichnung allerdings nicht richtig, da der 3-D-Druck eine spezielle Technologie unter den additiven Fertigungstechniken darstellt. Bei exakter...
Article
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In many areas of restorative dentistry, metal-free materials offer an alternative to metal-based restorations while ensuring high levels of biocompatibility and esthetics. Rapidly evolving CAD/CAM technology has significantly expanded the range of materials available, providing access to classes and combinations of materials not previously availabl...
Article
Innovative digital diagnostic, design, and manufacturing technologies combined with high-performance polymers offer new possibilities to facilitate complex interdisciplinary treatment procedures. This article reports on the interaction of different digital technologies, from presurgical digital simulation of periodontal surgery to final prosthodont...
Book
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Mit der Neuerscheinung des Buches "CAD/CAM in der digitalen Zahnheilkunde" soll eine bisher vorhandene Lücke in der dentalen Fachliteratur geschlossen werden. Die enorme Entwicklungsgeschwindigkeit in der digitalen Zahnheilkunde bedarf fundierter Kenntnisse in den verschiedenen Bereichen des digitalen Arbeitsablaufes. So wird mit dem Buch ein roter...
Article
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Pretreatment with occlusal splints is a crucial step in a structured treatment approach for a complex rehabilitation that changes the vertical dimension of occlusion. Meticulous patient compliance is one of the essential prerequisites for overall treatment success. However, patient compliance is all too often insufficient due to esthetic, phonetic,...
Article
Digital technology significantly changed the working sequences in restorative dentistry over the last two decades. In particular in the dental laboratory new fabrication techniques and materials were introduced. As implants represent high demands on prosthodontics in terms of mechanical stability and accuracy the advantages of digital fabrication m...
Article
Objective: To test the mechanical properties of three different restorative materials for implant abutments supporting all-ceramic single crowns. Materials and methods: Thirty implants with butt-joint connections were distributed into three test groups: Group A with 10 one-piece zirconia abutments, Group U with 10 titanium abutments, and Group T...
Article
The creation of dental restorations with natural appearance and biomechanics represents a major challenge for the restorative team. The manufacturing-process of high-aesthetic restorations from tooth-coloured restorative materials is currently dominated by manual manufacturing procedures and the outcome is highly dependent on the knowledge and skil...
Article
Von der Zahnaufstellung bis zur Totalprothese: Die Digitalisierung hat mittlerweile in viele Laborbereiche Einzug gehalten. Damit Auszubildende auch in weniger technikaffinen Laboren die Bandbreite der modernen Softwarentwicklung kennenlernen, hat die Südbayerische Zahntechniker-Innung (SZI) 2013 die überbetriebliche Lehrlingsunterweisung ÜLU CAD/C...
Patent
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Hauptanspruch: Prothesenbasisrohling (1, 21) zur Herstellung einer Prothesenbasis für eine Dentalprothese mit einem subtraktiven CAM-Verfahren, wobei der Prothesenbasisrohling (1, 21) aus einem Kunststoff oder aus einem Wachs besteht, dadurch gekennzeichnet, dass der Prothesenbasisrohling (1, 21) vorgeformt ist, wobei ein Zahnbogen (2) oder ein Zah...
Article
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In vielen Publikumsmedien wird der „-D-Drucker“ häufig als gängige Technologie für die Herstellung von Zahnersatz dargestellt. Das vorliegende Sachverständigenpapier gibt eine objektive Darstellung der derzeitigen additiven digitalen Fertigungsmöglichkeiten (umgangssprachlich -D-Druck) im zahntechnischen Labor. Ziel ist es, das Anwendungsspektrum d...
Article
Die verschiedenen Konzepte für die digitale Totalprothetik reichen vom semidigitalen Ansatz, bei dem die Aufstellung der Zähne digital erfolgt und anschließend eine Wachsbasis gefräst wird, welche analog fertiggestellt wird, bis hin zum volldigitalen Ansatz mit gefräster Kunststoffbasis. Der größte Nachteil des volldigitalen Ansatzes ist das Fehlen...
Article
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Objectives: Introducing a new approach to evaluate the accuracy of digital impression methods for full-arch scans, avoiding "best-fit alignment." Materials and methods: A lower jaw model with a straight metal bar between the second molars of both quadrants was directly digitized using an intraoral scanner (True Definition, TRD, n = 12) and indir...
Article
New treatment concepts for complete denture fabrication, including digital components, may increase the predictability of the treatment outcome. The reduced number of appointments, improved biocompatibility of the materials, opportunity to copy the outline of existing dentures, possibility of a virtual evaluation, and reduction of costs have change...
Article
Objectives: Presentation of a systematic procedure for the restoration of complex implant supported restorations was the goal of this case report. Complex cases include all fields of modern dentistry as conservative, periodontal, surgical, orthodontic and restorative treatments. Hence, only a systematic treatment plan and approach can show a predic...
Article
Diese Übersichtsarbeit stellt internationale Studien zu Retentionskräften von Doppelkronen vor, in denen Teleskop- und Konuskronen in diversen Material- und Konuskombinationen in vitro und in vivo getestet und auf ihre Beständigkeit gegen Verschleiß untersucht wurden. Viele Autoren kommen zu dem Schluss, dass die Retention mit steigendem Konuswinke...
Article
Statement of problem Polyetheretherketone (PEEK) can be used as a framework material for fixed dental prostheses (FDPs). However, information about the fracture load of veneered PEEK FDPs is still scarce. Purpose The purpose of this in vitro study was to investigate the influence of different PEEK surface pretreatments and adhesive systems on the f...
Article
Implant prosthodontics offers multiple clinical options. There is one crucial question that has not been completely solved: is screw-retention or cementation of implant-supported restorations superior? This question may be answered differently depending on the background and experience of the practitioner, and there are good arguments for both conc...
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The identical replication of adjacent teeth creates the illusion of “natural-identical” restorations. Single maxillary anterior teeth, especially the central incisor, cannot be successfully realized as monolithic crowns, as these cannot adequately mimic the individually layered structure of anterior teeth. Here the craftsmanship of an experienced d...