Article
Materials Science, Coatings & Films
Fei Sun, Xing -long Liu, Ji-ping Yin, Ding -Ding Xiang, Zeng Lin, Gui-qiu Song
Summary: This study evaluated the mechanical properties of abutments treated with arc plasma nitriding and PVD TiN coatings, finding that such duplex treatment can increase interface contact area, enhance resistance to loosening and pullout force, as well as improve wear resistance and extend the fatigue life of implant systems.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Physical
Florian Rathe, Paul Weigl, Jan Wasiak, Christoph Ratka, Holger Zipprich
Summary: The aim of this study was to investigate whether anodizing parts of the implant-abutment complex could increase the preload force of a given tightening torque. The results showed that both test groups experienced higher preload forces compared to the non-anodized control group.
Article
Dentistry, Oral Surgery & Medicine
Raquel Alonso-Perez, Jose F. Bartolome, Guillermo Pradies
Summary: This study assessed the internal accuracy and mechanical behavior of implant-supported crowns restored with original and non-original stock abutments after artificial aging. The results showed that the original stock abutments provided better fit and mechanical performance, with higher fatigue limit values and fatigue strength compared to the non-original configurations under cyclic loading.
JOURNAL OF PROSTHODONTIC RESEARCH
(2022)
Article
Dentistry, Oral Surgery & Medicine
M. A. Rodrigues, A. R. Cortez, J. Cortez, P. Gobbo, M. Lepicka, S. Barros-Silva, P. P. Freitas, M. A. Lopes, J. Mendes
Summary: This study investigates a novel coating for solving the issue of bacterial infection in dental implant treatment, with evaluations on its antimicrobial properties and cytotoxicity. Results show that the coating has high antimicrobial activity without cytotoxicity, and the antimicrobial features are preserved regardless of sterilization methods.
Article
Chemistry, Physical
Gyozo Kortvelyessy, Arpad Laszlo Szabo, Istvan Pelsoczi-Kovacs, Tamas Tarjanyi, Zsolt Toth, Krisztina Karpati, Danica Matusovits, Botond David Hangyasi, Zoltan Barath
Summary: This research examined the mechanical properties of implant-superstructure connections. Both static and dynamic loading tests indicated that a larger cone angle resulted in less loosening of the fixing screw, which can have significant implications for the long-term safety of dental prosthesis.
Article
Engineering, Biomedical
Chandrashekhar Pandey, Bishwa Prakash Bhattarai, Apiwat Riddhabhaya, Natthamet Wongsirichat, Dinesh Rokaya
Summary: This study evaluated the effects of repeated screwing-unscrewing of implant-healing abutments on the hex surfaces and screw heads. It was found that distortions in the healing abutment screws appeared after 32 cycles, with significant differences observed at 24, 160, 320, and 400 cycles. No surface distortions were noted on the screw heads until 400 cycles, suggesting caution should be exercised by clinicians when reusing healing abutments.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2022)
Article
Dentistry, Oral Surgery & Medicine
Guelce Cakmak, Mehmet Esad Guven, Mustafa Borga Donmez, Cigdem Kahveci, Martin Schimmel, Samir Abou-Ayash, Burak Yilmaz
Summary: This study aimed to compare the effect of a newly introduced and an established connection on screw stability before and after cyclic loading. The results showed that the implant-abutment connection influenced the removal torque values, but no screw loosening occurred during cyclic loading, indicating a stable connection for all groups.
CLINICAL ORAL IMPLANTS RESEARCH
(2023)
Article
Multidisciplinary Sciences
Sixian Ye, Huangjun Zhou, Xingyu Lyu, Hao Feng, Min Liu, Cai Wen
Summary: This study investigated the effect of transferring the vent hole of the posterior implant crown to the lateral side on excess cement extrusion and crown retention ability. The results showed that higher position of the lateral hole resulted in less weight and smaller distribution area of cement extrusion. Transferring the vent hole could reduce cement extrusion at the cervical margin without compromising crown retention strength.
Article
Materials Science, Ceramics
Yongtao Zhao, Peiran Li, Peng Dong, Yong Zeng, Jimin Chen
Summary: By studying the effects of different heat treatment parameters on the sintering quality of ZrO2, the optimal sintering parameters were determined for the preparation of a ZrO2 ceramic dental implant abutment with good morphology and high strength.
CERAMICS INTERNATIONAL
(2021)
Article
Dentistry, Oral Surgery & Medicine
Abdullah H. Alnasser, Chandur P. K. Wadhwani, Todd R. Schoenbaum, Mathew T. Kattadiyil
Summary: The study aimed to determine the optimal tightening protocol for implant abutment screws. The experiments found that different tightening protocols have an effect on the reverse tightening values of the implant abutment screws.
JOURNAL OF PROSTHETIC DENTISTRY
(2021)
Article
Dentistry, Oral Surgery & Medicine
Hamid Neshandar Asli, Zahra Dalili Kajan, Negar Khosravifard, Seyedeh Newsha Roudbary, Elahe Rafiei
Summary: The study evaluated the success rates of CBCT in identifying the locations and directions of abutment screw access holes in metal-ceramic and all-ceramic implant restorations. The results showed that CBCT was more reliable in defining the positions and directions of ASAHs in metal-ceramic restorations compared to all-ceramic restorations.
INTERNATIONAL JOURNAL OF PROSTHODONTICS
(2021)
Article
Materials Science, Characterization & Testing
Cigdem Mercan, Asli Gunay Bulutsuz, Ahmet Bulent Katiboglu
Summary: In this in vitro study, the effects of gingival height, dental implant diameter, and abutment type on microgap formation were observed. The abutment type was found to be the most influential parameter, with a digital attachment combination identified as the optimal design parameter.
Article
Dentistry, Oral Surgery & Medicine
Prapatsorn Chongkavinit, Chuchai Anunmana
Summary: This in vitro study investigated the optical effects of cement shade, ceramic type, ceramic thickness, and abutment material on the final color of CAD-CAM ceramic restorations. Results showed that different ceramic thicknesses, ceramic types, and abutment materials significantly impacted the final color. Increasing ceramic thickness could minimize alteration of the final shade, while high-translucency ceramics combined with resin cement successfully masked abutment material colors.
JOURNAL OF PROSTHETIC DENTISTRY
(2021)
Article
Dentistry, Oral Surgery & Medicine
Camila Berbel Seloto, Henrico Badaoui Strazzi-Sahyon, Paulo Henrique dos Santos, Wirley Goncalves Assuncao
Summary: The study demonstrated the effectiveness of a sealing agent in improving preload maintenance of screw-retained implant-supported prostheses, particularly in the Morse taper connection. The experimental groups showed higher reverse torque values and no significant dye release at different periods compared to the control groups.
JOURNAL OF PROSTHODONTIC RESEARCH
(2021)
Article
Dentistry, Oral Surgery & Medicine
Keren Shemtov-Yona, Adi Arieli, Mohana Barhum, Raphael Pilo, Shifra Levartovsky
Summary: This in vitro study aimed to evaluate the influence of medium contamination on the biomechanical behavior of implant abutment screws. The results showed that lubrication/contamination media reduced the preload generated due to tightening but prevented damage due to galling. Frequent abutment screw retightening is necessary for long-term stability of implant-supported prosthetics.
CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH
(2023)
Article
Dentistry, Oral Surgery & Medicine
Simon Peroz, Ingrid Peroz, Florian Beuer, Guido Sterzenbach, Manja von Stein-Lausnitz
Summary: The purpose of this study was to evaluate the impact of digital versus conventional production of complete dentures on oral health-related quality of life (OHRQoL). The results showed that the fabrication method had no significant influence on OHRQoL, but digital dentures had shorter production time, less chair time, and less time required for dental laboratory technicians.
JOURNAL OF PROSTHETIC DENTISTRY
(2022)
Article
Dentistry, Oral Surgery & Medicine
Philipp Rehm, Hermann Derks, Wilfried Lesaar, Benedikt Christopher Spies, Florian Beuer, Mats Wernfried Heinrich Boese
Summary: The study evaluated the long-term survival and success rates of partial-coverage crowns manufactured from high noble metal alloys, which showed excellent outcomes after an average observation period of 18.8 years. Patients aged between 37 and 51 years had significantly higher success rates with high noble metal alloy partial-coverage crowns.
CLINICAL ORAL INVESTIGATIONS
(2022)
Article
Dentistry, Oral Surgery & Medicine
Ping Li, Pablo Kraemer Fernandez, Sebastian Spintzyk, Franziska Schmidt, Florian Beuer, Alexey Unkovskiy
Summary: The surface roughness of 3D printed denture base polymers is significantly influenced by the build angle rather than the additive manufacturing method. However, there is no impact of the AM method and build angle on Candida albicans adhesion to the 3D printed denture bases.
JOURNAL OF DENTISTRY
(2022)
Article
Dentistry, Oral Surgery & Medicine
Maria Bruhnke, Richard Johannes Wierichs, Manja von Stein-Lausnitz, Hendrik Meyer-Luckel, Floriam Beuer, Michael Naumann, Guido Sterzenbach
Summary: This prospective clinical study aimed to investigate the survival of endodontically treated teeth restored with adhesively luted prefabricated dentinlike or rigid posts. The study found that the post system had no significant impact on tooth survival, indicating a low effect size of post material on survival.
JOURNAL OF ENDODONTICS
(2022)
Article
Engineering, Biomedical
Yuqiuhan Zhang, Tycho Zimmermann, Wolf-Dieter Mueller, Frank Witte, Florian Beuer, Andreas Schwitalla
Summary: This study aims to describe the degradation process of magnesium and magnesium alloys through electrochemical measurements, assess its predictability, and investigate the effect of adding silver on the degradation process.
BIOACTIVE MATERIALS
(2022)
Article
Chemistry, Physical
Alexey Unkovskiy, Florian Beuer, Dilan Seda Metin, Daniel Bomze, Jeremias Hey, Franziska Schmidt
Summary: This paper describes the first clinical experience of using LCM lithium disilicate restorations for manufacturing veneers for patients with severe tooth wear. The results show that the applied restorations have good aesthetics and marginal fit. In addition, LCM technology can successfully print non-prep veneers with a thickness of 0.1mm.
Article
Medicine, General & Internal
Max L. Poeppel, Martin Rosentritt, Richard Sturm, Florian Beuer, Jeremias Hey, Alois Schmid, Franziska Schmidt
Summary: The study shows that color-gradient multilayer zirconia materials and new strength-gradient zirconia materials with similar yttria levels in the basal layers exhibit comparable mechanical properties and are suitable for anterior FDPs.
JOURNAL OF CLINICAL MEDICINE
(2022)
Article
Dentistry, Oral Surgery & Medicine
Maria Bruhnke, Florian Beuer, Wernfried Heinrich Boese, Michael Naumann
Summary: The aim of this pilot clinical study was to investigate the survival, frequency, and type of complications of extensively damaged teeth requiring single-crown restorations after forced orthodontic extrusion. The study concluded that forced orthodontic extrusion allowed for the successful restoration of anterior and premolar teeth deemed nonrestorable due to their defect size, with a treatment success rate of 94%.
JOURNAL OF PROSTHETIC DENTISTRY
(2023)
Article
Medicine, General & Internal
Maria Bruhnke, Michael Naumann, Florian Beuer, Insa Herklotz, Mats Wernfried Heinrich Boese, Stefan Neumeyer, Manja von Stein-Lausnitz
Summary: The study showed that there was no significant difference in oral health-related quality of life (OHRQoL) between patients who had severely compromised teeth restored and those who received implant-supported single crown restoration. Although patients in the FOE group exhibited lower OHRQoL in terms of functional limitations and physical disability at one point, overall OHRQoL levels were similar between the two treatment concepts.
JOURNAL OF CLINICAL MEDICINE
(2022)
Article
Dentistry, Oral Surgery & Medicine
Ping Li, Pablo Kraemer Fernandez, Sebastian Spintzyk, Franziska Schmidt, Jamila Yassine, Florian Beuer, Alexey Unkovskiy
Summary: This study investigated the effects of printing-layer thickness and build angle on the surface characteristics and microbial adhesion of denture base polymers manufactured by digital light processing (DLP). The results showed that both the printing-layer thickness and build angle had significant effects on surface roughness, but only the printing-layer thickness influenced microbial adhesion. Therefore, reducing the printing-layer thickness is critical for producing digital dentures with optimal material properties.
JOURNAL OF PROSTHODONTIC RESEARCH
(2023)
Article
Dentistry, Oral Surgery & Medicine
Insa Herklotz, Florian Beuer, Maria Bruhnke, Jan Zoske, Mats Wernfried Heinrich Bose
Summary: This study aimed to compare the planned implant position (PIP) with the transferred implant position (TIP) in single-tooth gaps using fully guided implant placements. The results showed that fully guided implant placements provided accurate results, but there were significant vertical deviations that require reevaluation of drilling and insertion depths prior to implant installation.
INTERNATIONAL JOURNAL OF COMPUTERIZED DENTISTRY
(2023)
Article
Dentistry, Oral Surgery & Medicine
Elisabeth Prause, Jeremias Hey, Guido Sterzenbach, Florian Beuer, Ufuk Adali
Summary: The aim of this study was to evaluate the long-term clinical survival and success rate of veneered zirconia crowns with a modified anatomical framework design after 10 years in function. The results showed a survival rate of 92.9% for the crowns, with technical complications occurring in 54% of the cases and biologic complications in 12%. Most crowns were positively evaluated for technical complications, and the periodontal conditions were good with high patient satisfaction.
INTERNATIONAL JOURNAL OF COMPUTERIZED DENTISTRY
(2023)
Article
Dentistry, Oral Surgery & Medicine
Simon Peroz, Benedikt Christopher Spies, Ufuk Adali, Florian Beuer, Christian Wesemann
Summary: This study evaluated the influence of methodological factors on the measurement outcome of full-arch scans. The results showed that the reference geometry and alignment algorithm had a significant impact on the measurement result, while the operator, inspection software, and mesh density did not affect the trueness of the outcome.
JOURNAL OF PROSTHODONTIC RESEARCH
(2022)
Article
Dentistry, Oral Surgery & Medicine
Maria Bruhnke, Kerstin Bitter, Florian Beuer, Mats Wernfried Heinrich Boese, Stefan Neumeyer, Michael Naumann
Summary: Maintaining and restoring teeth with subgingival or subcrestal defect extensions is a common challenge in dental practice. Surgical crown lengthening and orthodontic extrusion have been suggested as treatment options, with the latter being a valid alternative that preserves gingival architecture. This article presents a clinical case series illustrating the use of the Tissue Master Concept for orthodontic extrusion in specific clinical situations.
QUINTESSENCE INTERNATIONAL
(2022)
Review
Dentistry, Oral Surgery & Medicine
Marie-Elise Jennes, Maren Soetebeer, Florian Beuer
Summary: This narrative review provides an overview of the in vivo accuracy of full-arch scans performed with currently used intraoral devices and compares different methods for determining in vivo accuracy. The results suggest that there is no scientific consensus on the required accuracy of in vivo full-arch scans, and further studies are needed in this area. Additionally, a valid reference concept that can be scanned both extraorally and intraorally should be developed.
INTERNATIONAL JOURNAL OF COMPUTERIZED DENTISTRY
(2022)
