Florian Beuer

Charité Universitätsmedizin Berlin | Charité

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...

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...

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...

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...

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...

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...

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...

Purpose. The aim of this in vitro study was to compare two different measurement protocols of the internal and marginal fit of three-unit zirconia fixed dental prostheses (FDPs). Materials and Methods. Forty-four FDPs were fabricated for standardized dies by two laboratory CAD/CAM systems: Cercon, DeguDent (n=22) and Ceramill, Amann Girrbach (n=22)...

Purpose: The aim of this study was to evaluate the fit and mechanical stability of conventional versus passive fitting 3-unit fixed dental prosthesis (FDP) screw-retained on implants. Methods: Twenty acrylic models, each with two embedded implants, were fabricated and functioned as patient-models. Impressions were taken and 20 all-ceramic FDPs w...

Objectives Artefacts caused by orthodontic attachments limit the diagnostic value and lead to removal of these appliances before magnetic resonance imaging. Magnetic permeability can predict the artefact size. There is no standardised approach to determine the permeability of such attachments. The aim was to establish a reliable approach to determi...

Objectives: CAD/CAM-fabricated long-term temporary restorations from high-density polymers can be applied for a wide range of indications. Milled from monolithic, mono-colored polymer blocks, the translucency of the material plays an important role for an esthetically acceptable result. The aim of this study was to compare the transmittance throug...

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...

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...

Single-retainer resin-bonded fixed dental prostheses (RBFDPs) are difficult to position due to the pressure of soft tissue at the pontic area and the single-retainer design. This clinical report describes an innovative technique for the insertion of single-retainer RBFDPs. An incisal inserting splint is used to position the RBFDPs reliably. With th...

Purpose: To clinically evaluate the amount of contact wear generated between full-arch monolithic zirconia implant-supported restorations and natural or composite antagonists, over a 1-year period. Materials and Methods: Forty seven teeth from clinically functional, full-arch monolithic zirconia screw-retained implant prostheses (FDPs) and their an...

Background/purpose: One of the major educational goals in preclinical dental education is to learn tooth preparation techniques. The purpose of this study was to evaluate the influence of different preparation designs on the development of the manual dexterity of students, in order to perform a state-of-the-art tooth preparation. Material and metho...

The high-performance polymer PEEK (poly-ether-ether-ketone) is more and more being used in the field of dentistry, mainly for removable and fixed prostheses. In cases of screw-retained implant-supported reconstructions of PEEK, an abutment screw made of PEEK might be advantageous over a conventional metal screw due to its similar elasticity. Also i...

Bacterial leakage from the implant-abutment-interface (IAI) is suspected of contributing to the development of peri-implantitis. The aim of the study was to develop a straightforward test set-up to evaluate the bacterial leakage of the IAI of two-piece implant systems under laboratory conditions. A test suspension of Enterococcus faecium (E. faeciu...

Objectives: This case series compared the clinical survival of tooth-implant-supported (TI-S) and tooth-supported (T-S) three-unit fixed dental prostheses (FDPs) with zirconia frameworks and described the incidence of biological and technical complications. Materials and methods: Forty-four patients received 27 TI-S FDPs and 22 T-S FDPs. Twenty-...