Florian Beuer

Charité Universitätsmedizin Berlin | Charité

Background Between adjacent dental implants, an interimplant distance (IID) of at least 3 mm has been recommended to avoid resorbing the interproximal crestal bone. The effect of a 2 mm IID on crestal bone loss has been investigated but the literature is scarce when it comes to an IID of 1 mm. There is a need to document such clinical situations wh...

Objectives: The aim of the present prospective study was to evaluate the colour stability of 3D-printed non-invasive restorations after 24 months in vivo. Methods: The study included 29 patients, who received 3D-printed restorations made of a computer-aided design (CAD) / computer aided-manufacturing (CAM) hybrid material (n = 354). Restoration col...

Aim: To report on a novel digital superimposition workflow that enables measuring the supra-crestal peri-implant soft tissue dimensions all along implant treatment and afterwards. Materials and methods: A preoperative CBCT and intra-oral scans (IOS) are successively taken before surgery, at the end of the healing period, at prosthesis delivery,...

Um ein langfristig stabiles implantatprothetisches Ergebnis zu gewährleisten und das Risiko von Komplikationen zu minimieren, wird empfohlen, ein prothetisch orientiertes Backward-Planning durchzuführen. Digitale Hilfsmittel wie Implantatplanungssoftware können dabei eingesetzt werden, um die ideale Implantatposition virtuell auf Basis von drei-dim...

Background:To reduce the risk of technical and biological complications after dental implant installation, a correct three-dimensional (3D) positioning is desirable. Although there is scientific consensus regarding the superiority in terms of accuracy of implant placement with static computer-assisted implant surgery (sCAIS) compared to free-hand t...

Objectives: To assess clinical, radiological and esthetic outcomes of restorations supported by root-analogue implants (RAIs) or roots of severely damaged teeth after forced orthodontic extrusion (FOE). Materials and methods: Clinical data regarding milled one-piece (titanium/zirconia roots and zirconia abutments) RAIs (REPLICATE™ System) and FOE...

Purpose: A reference method for quantifying contaminations on two-piece abutments manufactured using CAD/CAM (Computer-Aided Design/Computer-Aided Manufacturing) has not yet been established. In this in vitro study, a pixel-based machine learning method for detecting contamination on customised two-piece abutments was investigated and embedded in...

Objectives: To assess clinical, radiological and esthetic outcomes of prosthodontic rehabilitations supported by root-analogue implants (RAIs) or roots of severely damaged teeth after forced orthodontic extrusion (FOE). Materials and Methods: Clinical data regarding RAIs and FOE were recorded and retrospectively evaluated for 40 patients by two i...

In cases of severely compromised teeth, dental practitioners are confronted with the therapeutic decision of whether to restore a tooth or replace it with an implant. Comparative scientific evidence on patient perception of both treatment approaches is scarce. The subject of this prospective clinical study was to compare oral health-related quality...

Zielstellung: Vergleich der virtuell geplanten (VP) und klinisch übertragenen Implantatpositionen (KP) nach schablonengestützten, voll geführten Implantationen in Einzelzahnlücken. Material und Methoden: Digitale Volumentomografien wurden angefertigt, konventionelle Abformungen genommen und Modelle mit abnehmbaren, analogen Wax-ups hergestellt. Im...

Zielstellung: Die computer-gestützte Implantatplanung hat in den letzten Jahren an Bedeutung gewonnen. Studien zeigten, dass die Abweichungen zwischen geplanter und realer Implantatposition sehr gering sein können. An der Martin-Luther-Universität Halle-Wittenberg wurde dieses Konzept sowohl theoretisch als auch praktisch gelehrt. Es galt herauszuf...

Background: With healthy adjacent teeth, implant-supported (IS) single-crowns (SCs) are a reliable alternative to fixed dental prostheses (FDPs). However, technical and biological complications occur and are regularly documented in the literature for IS restorations [1]. These risks can be reduced by considering surgical and prosthetic parameters [...

Background: For both static (sCAIS) and dynamic computer-assisted implant surgeries (dCAIS) predictable results are documented comparing planned (PIP) and transferred implant positions (TIP) [1, 2]. However, in comparison to sCAIS much less data is available for dCAIS. Therefore, more studies regarding dCAIS seem to be necessary to prove applicabil...

Background: ceramic veneers, crowns, and other types of restorations are often made using either the press heating technique or the subtractive method. The advent of lithography-based ceramic manufacturing (LCM) allows for the manufacturing of such restorations in an additive way. Methods: this concept paper describes the first clinical experien...

(1) Background: Due to advantages such as avoidance of chipping, pulp-friendly tooth preparation and cost reduction, zirconia is increasingly being used monolithically without veneering. Nevertheless, to enable good aesthetics, various multilayer systems have been developed. The aim of this study was to investigate the impact of different zirconia...

Objectives: To compare the planned (PIP) and transferred implant position (TIP) after dental implant placement in single-tooth gaps utilizing dynamic computer-assisted implant surgery (dCAIS). Methods: Five pairs of artificial jaws (n=5) with four single tooth gaps in FDI (Fédération Dentaire Internationale) regions 16, 25, 36 and 44 were manufact...

Objectives: To systematically assess the literature and report on (1) the frequency of occurrence of buccal soft tissue dehiscence (BSTD) at implants, (2) factors associated with the occurrence of BSTD and (3) treatment outcomes of reconstructive therapy for the coverage of BSTD. Materials and methods: Two systematic reviews addressing focused q...

Extrusion‑based printing enables simplified and economic manufacturing of surgical guides for oral implant placement. Therefore, the cytotoxicity of a biocopolyester (BE) and a polypropylene (PP), intended for the fused filament fabrication of surgical guides was evaluated. For comparison, a medically certified resin based on methacrylic esters (ME...

Aim: The present narrative review aims to provide an overview of the in vivo accuracy of full-arch scans performed with currently used intraoral devices and to compare different methods for the determination of in vivo accuracy. Materials and methods: An electronic search was performed with the PubMed, Cochrane Central Register of Controlled Tr...

Der Anteil enossaler Implantate bei der zahnmedizinischen Therapie hat sich nach Daten der Fünften Deutschen Mundgesundheitsstudie (DMS V) zwischen 1997 und 2014 verzehnfacht. Parallel zu dieser Entwicklung sind das Wissen und die klinische Erfahrung in der Implantologie enorm gewachsen. Hinzu kommen digitale Techniken und Hilfsmittel, womit sich d...

Objective: This systematic review evaluated the effectiveness of soft tissue augmentation procedures for complete coverage and mean coverage of buccal soft tissue dehiscence (BSTD) in patients with implant-supported restorations. Methods: Three databases were surveyed for randomized (RCTs), non-randomized controlled clinical trials (CCTs), cohor...

Für den Langzeiterfolg von vollkeramischen Restaurationen sind die Indikationsstellung, die Werkstoffauswahl, die Beachtung der Funktion sowie die Berücksichtigung von materialspezifischen Eigenschaften essenziell. Das im Juni 2021 veröffentlichte Update der S3-Leitlinie „Vollkeramische Kronen und Brücken“ (AWMF-Reg.-Nr. 083-012) zeigt einen Rahmen...

Objectives: To evaluate long-term survival and success rates of conventionally cemented partial-coverage crowns (PCCs) manufactured from high noble metal alloys (hn). Material and methods: Restoration-, periodontal-and tooth-related criteria on patients, restored with a single or multiple conventionally cemented hnPCCs in a private dental office...

Abstract: The aim of the present study was to systematically review studies investigating antibacterial implant abutment surfaces or coatings, which may suppress bacterial growth to prevent plaque-induced peri-implant inflammatory disease. Data were collected after identification of case, assay/laboratory procedure, predicate/reference standard and...

The lithium disilicate material is widely used for manufacturing of crowns and veneers in the esthetically relevant region. To date such construction are made either using the press technique or subtractive. As the 3D printing is constantly evolving it became possible to produce ceramic restorations in an additive way. The current clinical case dem...

English: Digitization has become an integral part of many fields in dentistry. This trend is expected to continue in the coming years. Regarding implantology, digital techniques enable a high degree of precision and accuracy. They thus ensure greater safety and predictable prosthodontic results. These advantages benefit both practitioners and patie...

Background: Augmentation of the edentulous atrophic anterior region is a challenging situation. The purpose of this article was to evaluate the effectiveness of a collagenated cortical bone lamina of porcine origin for horizontal ridge augmentation in patients with inadequate alveolar ridge width undergoing immediate post-extraction implantation i...

Die Rehabilitation von Patienten mit starken Zahnhartsubstanzverlusten und abgesunkener Vertikaldimension stellt eine Herausforderung im Praxisalltag dar, da diese einer umfassenden konzeptionellen Planung bedarf. Der folgende Fallbericht beschreibt die Rehabilitation eines Patienten mit massivem Zahnhartsubstanzverlust in Kombination mit einer Erh...

Purpose: After some initial setbacks in the 1970s, ceramic implants seem to be a promising alternative to titanium implants. Since the surface of an implant system represents the interface to surrounding biologic structures, the study focuses on cleanliness and surface topography. Clinical documentation of the corresponding systems completes the p...

Objective: Telescopic crowns are suitable components of partial dentures to efficiently anchor dental supra-structures to teeth or dental implants and achieve high chewing performance and wear comfort. Usually alloy- or metal-based structures are used for the primary and the secondary crowns. The advantage is the possibility to produce precise str...

Purpose: The accuracy of intraoral and model scanners has been widely investigated with heterogeneous results, but the impact of the applied diversity of measurement methods on the outcomes remains unknown. This study aimed to evaluate the influence of methodological factors on the measurement result when comparing full-arch scans. Methods: The...

3D printing in dentistry as a new treatment method for various indication areas.

Magnesium as biodegradable biomaterial could serve as bone augmentation material in implant dentistry. The knowledge about the predictability of the biodegradation process is essential as this process needs to go hand in hand with the formation of new bone to gradually replace the augmentation material. Therefore, this work aimed to assess if the e...

Objective. To investigate the tensile and flexural strength of poured, subtractive, and additive manufactured denture base methacrylates bonded to soft and hard relining materials after hydrothermal cycling and microwave irradiation. Methods. This study included a conventional (CB), subtractive (SB), and additive (AB) base material as well as a sof...

The topical literature lacks any comparison between stereolithography (SLA) and direct light processing (DLP) printing methods with regard to the accuracy of complete denture base fabri-cation, thereby utilizing materials certified for this purpose. In order to investigate this aspect, 15 denture bases were printed with SLA and DLP methods using th...

Background: The review presents the scientific state of the art in the field of cementation of crowns on implants. Because semipermanent cements have been specially developed for the cementation of crowns on implants, the question arises whether this cement group offers an advantage compared to other available and widely used cements in everyday cl...

Objectives. To investigate the wear resistance of polymers for injection molding, subtractive and additive manufacturing of occlusal devices in comparison with enamel antagonist wear and material properties (i.e., hardness, flexural strength, and flexural modulus). Methods. Injection molding was compared with milling and the additive technologies s...

Objectives We assessed dental prosthetic services utilization in very old Germans.MethodsA comprehensive sample of 404,610 very old (≥ 75 years), insured at one large statutory insurer (Allgemeine Ortskrankenkasse Nordost, acting in the federal states Berlin, Brandenburg, Mecklenburg-Vorpommern), were followed over 6 years (2012–2017). Our outcome...

The restoration of severely damaged teeth challenges dental practitioners because defects are often located at the subcrestal level. In these cases, surgical crown lengthening or orthodontic extrusion procedures are deemed necessary to maintain the biologic width and respect a sufficient ferrule design after preparation. Considering the negative ef...

Occlusal devices to reduce symptoms of bruxism and temperomandibular disorders can nowadays be manufactured in a digital workflow but studies comparing the accuracy of those occlusal devices are still limited. Therefore, the aim of this investigation was to investigate the accuracy of injection molding compared with four computer-aided design (CAD)...

Background: Immediate implant placement with screw‐shaped implants is constantly investigated in the literature regarding its impacts on hard‐ and soft‐tissue resorption processes after tooth extraction. In contrast, there are little clinical data available regarding immediate implant placement using root‐analogue implants (RAIs). Aim/Hypothesis:...

The objective was to investigate clinical and radiological outcomes of rehabilitations with root-analogue implants (RAIs). Patients restored with RAIs, supporting single crowns or fixed dental prostheses, were recruited for follow-up examinations. Besides clinical and esthetical evaluations, X-rays were taken and compared with the records. Patients...

3D printed surgical guides are used for prosthetically-driven oral implant placement. When manufacturing these guides, information regarding suitable printing techniques and materials as well as the necessity for additional, non-printed stock parts such as metal sleeves is scarce. The aim of the investigation was to determine the accuracy of a surg...

Statement of problem Intraoral scanners (IOSs) are based on light-optical imaging methods. However, little is known about whether the ambient light in dental practices influences the accuracy and scanning time of the IOS. Purpose The purpose of this in vitro study was to investigate the influence of different illuminations on the accuracy of 4-uni...

For digital impression-making of two-piece oral implants, scan bodies are used to transfer the exact intraoral implant position to the dental laboratory. In this in vitro investigation, the accuracy of digitizing a one-piece ceramic oral implant without a scan body (OC) was compared to that of a standard two-piece titanium implant with a scan body...

Statement of problem: Reliable studies comparing the accuracy of complete-arch casts from 3D printers are scarce. Purpose: The purpose of this in vitro study was to investigate the accuracy of casts printed by using various extrusion- and photopolymerization-based printers. Material and methods: A master file was sent to 5 printer manufacturer...

Aim: Evaluation of appropriate models for computer-aided design/computer-aided manufacturing (CAD/CAM) in vitro studies by investigation of different model materials regarding suitability for intraoral scanners and dimensional stability. Materials and methods: A typodont model was prepared to accommodate a 10-unit prosthesis. The model was dupli...

Purpose: Treatment by means of implant-supported immediately loaded fixed full-arch prostheses is known to be related to biologic and technical complications. The aim of this retrospective study was to investigate the prevalence and moment of occurrence of biologic and technical complications happening in immediately loaded fixed full-arch prosthe...

(1) Background: This paper aimed to compare the cleanliness of clinically well-documented implant systems with implants providing very similar designs. The hypothesis was that three well-established implant systems from Dentsply Implants, Straumann, and Nobel Biocare were not only produced with a higher level of surface cleanliness but also provide...

Volume stable barrier membranes made of magnesium are very promising in Guided Bone Regeneration (GBR) to treat periodontal bone defects in dentistry due to their excellent biocompatibility and biodegradability. During the degradation process the cells are exposed to the alteration of various parameters, so called physical cues, involving surface a...

Patients presenting both severe maxillary atrophy and dental malposition require a multidisciplinary treatment approach to achieve optimal esthetic and functional results. This case history report demonstrates how digital treatment planning and teeth set-up can serve as a reference for surgical, orthodontic, and prosthodontic procedures, leading to...

In most cases, prosthetic rehabilitation of patients suffering from microstomia is inconvenient for the patient and challenging for both the dentist and dental technician. In such cases, conventional impression-taking requires an individualized tray design and modified impression techniques, amplifying the risk for impression and cast deformation a...

Several attachment systems for implant-supported removable dental prostheses (ISRDPs) are currently available. The bar attachment option includes cast or milled alloyed male and female parts. Replaceable slide attachments made from elastic materials can be inserted into the female part of the bar to counter loss of friction that develops due to wea...

Several attachment systems for implant-supported removable dental prostheses (ISRDPs) are currently available. The bar attachment option includes cast or milled alloyed male and female parts. Replaceable slide attachments made from elastic materials can be inserted into the female part of the bar to counter loss of friction that develops due to wea...

Zielsetzung Die optische Lesbarkeit von DVT Aufnahmen ist abhängig von objektiv, physikalischen und subjektiv, erfahrungsbedingten Parametern Zu den physikalischen Bildparametern zählen Kontrast (C), Rauschen (N), Kontrast Rausch Verhältnis (CNR), Homogenität (H) und Modulationstransferfunktion (MTF). Zur Sicherung der Bildqualität beschreibt die D...

Der Wunsch nach zahnfarbenen Materialien hat inzwischen oder genauer gesagt erneut auch den enossalen Anteil der Implantate erreicht. Neben ausschließlich auf keramische dentale Implantate spezialisierten Unternehmen haben mittlerweile auch die großen Implantathersteller keramische Varianten im Angebot. Diesen werden vor allem ein hohes ästhetische...

Objectives: In a double-blinded randomized controlled clinical trial, the impact of face-bow registration for remounting complete dentures (CDs) on the occlusal parameters (part I) was evaluated. Materials and methods: New CDs of 32 patients were duplicated and mounted after intraoral pin registration according to mean settings (group 1) and (gr...

The indication-oriented Dental Bone Graft Substitutes (DBGS) selection, the correct bone defects classification, and appropriate treatment planning are very crucial for obtaining successful clinical results. However, hydrophilic, viscoelastic, and physicochemical properties’ influence on the DBGS regenerative potential has poorly been studied. For...

Objectives: In a double-blind randomized controlled clinical trial, the impact of face-bow registration for remounting complete dentures (CDs) on oral health-related quality of life (OHRQoL) was evaluated. Materials and methods: New CDs of 32 subjects were clinically remounted using intraoral pin registration. CDs were transferred into a semi-ad...

Objectives The purpose of this in vitro study was to compare the precision of fit of frameworks milled from semi-sintered regular zirconia and high-translucent (HT) zirconia blanks, fabricated with two different CAD/CAM systems. Material and methodsThree-unit, posterior fixed dental prostheses (FDP) frameworks were fabricated for standardized dies...

Objectives: The objective of this clinical study was to evaluate the clinical performance of implant-supported zirconia crowns with a sintered veneering cap. Furthermore, the influence of the type of retention (screw-retained vs cemented single crowns) was analysed. Materials and methods: Fifty-eight patients were accommodated with 114 implants,...

Introduction: Computer-aided design/computer-aided manufacturing (CAD/CAM) of fixed prosthetic restorations has gained popularity in the last decade. However, this field of dentistry has not been integrated in the dental curriculum at most universities. Material and methods: According to the method of Kern, a curriculum was designed and establis...

Objectives Direct and indirect digitalization offer two options for computer-aided design (CAD)/ computer-aided manufacturing (CAM)-generated restorations. The aim of this study was to evaluate the accuracy of different intraoral scanners and compare them to the process of indirect digitalization. Material and method A titanium testing model was di...