Article
Dentistry, Oral Surgery & Medicine
Mihai Tarce, Alexander de Greef, Pierre Lahoud, Karla de Faria Vasconcelos, Reinhilde Jacobs, Marc Quirynen
Summary: This study assessed the factors influencing implant blooming using a human-like imaging phantom and 3D-printed mandibles. The results showed that implant diameter, presence of a cover screw, implant design/material, implant position, and the presence of additional implants all affected the extent of implant blooming. The study also found that the effect of implant diameter was more pronounced for zirconium implants.
CLINICAL ORAL IMPLANTS RESEARCH
(2022)
Article
Dentistry, Oral Surgery & Medicine
Rafael Siqueira, Khaled Sinjab, Ying-Chun Pan, Fabiana Soki, Hsun-Liang Chan, Oliver Kripfgans
Summary: The study aimed to explore the feasibility of ultrasonography (US) for imaging peri-implant tissues, showing high correlations between US measurements and CBCT as well as direct readings for crestal bone thickness and facial bone level. US was found to be a useful method for evaluating peri-implant facial crestal bone dimensions, and blood flow imaging could provide valuable information on inflammation severity.
CLINICAL ORAL IMPLANTS RESEARCH
(2021)
Article
Dentistry, Oral Surgery & Medicine
Nannan Huang, Peng Liu, Youlong Yan, Ling Xu, Yuanding Huang, Gang Fu, Yiqing Lan, Sheng Yang, Jinlin Song, Yuzhou Li
Summary: This study investigates the feasibility of predicting dental implant loss risk using deep learning based on preoperative cone-beam computed tomography. The research suggests that an integrated model and a DL model performed well in predicting implant fate within 5 years, offering useful tools for assessing preoperative risks in implant practice.
JOURNAL OF CLINICAL PERIODONTOLOGY
(2022)
Article
Dentistry, Oral Surgery & Medicine
Emilio Couso-Queiruga, Clemens Raabe, Urs C. Belser, Daniel Buser, Gustavo Avila-Ortiz, Diogo Moreira Rodrigues, Vivianne Chappuis
Summary: This study aimed to evaluate the reliability and reproducibility of different non-invasive methods for the assessment of peri-implant mucosal thickness. The results showed that the assessment methods using digital file superimposition, DICOM files alone, and non-ionizing ultrasound were all comparably reliable for quantifying peri-implant mucosal thickness.
JOURNAL OF PERIODONTOLOGY
(2023)
Article
Dentistry, Oral Surgery & Medicine
Danijel Domic, Kristina Bertl, Salman Ahmad, Lars Schropp, Kristina Hellen-Halme, Andreas Stavropoulos
Summary: In this study, it was found that buccal bone thickness significantly affects the accuracy of cone-beam computed tomography scans in determining the buccal bone level at dental titanium implants. Specifically, when buccal bone thickness is <= 1 mm, the detection accuracy of the buccal bone level is low.
JOURNAL OF PERIODONTOLOGY
(2021)
Article
Dentistry, Oral Surgery & Medicine
Ali Bushahri, Oliver D. Kripfgans, Furat George, I-Ching Wang, Hom-Lay Wang, Hsun-Liang Chan
Summary: In the intermediate term, peri-implant tissues, including mucosal level change of immediately placed implants with immediate provisionalization or delayed restoration, remained stable and did not differ between the groups. The final crown angle, influenced by implant position and abutment angle, might be associated with mucosal margin level change.
JOURNAL OF PERIODONTOLOGY
(2021)
Article
Dentistry, Oral Surgery & Medicine
Bruna Neves de Freitas, Raphael Jurca Goncalves da Motta, Ruben Pauwels, Christiano Oliveira-Santos, Camila Tirapelli
Summary: This study evaluated the influence of metal artefact reduction (MAR) on the diagnosis of dental implant contact with the mandibular canal (MC) using cone beam computed tomography (CBCT). The results showed that MAR had limited efficacy in the diagnosis of implant-MC contact, thus it is not recommended to use MAR in CBCT scans for this purpose.
CLINICAL ORAL IMPLANTS RESEARCH
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Annika Bertram, Alexander W. Eckert, Ruediger Emshoff
Summary: This study found site-specific underestimations of available horizontal bone dimensions for implants when assessed by PAN, indicating that canines, first, and second premolars may need to be excluded when evaluating root angulations via PAN.
BMC MEDICAL IMAGING
(2021)
Article
Dentistry, Oral Surgery & Medicine
Xiaoxi Cui, Tyler Reason, Vanessa Pardi, Qiang Wu, Acela A. Martinez Luna
Summary: This retrospective study aimed to evaluate the correlation between crestal soft tissue thickness and hard tissue measurements on CBCT images, and to compare crestal soft tissue thickness among different patients and edentulous site groups. The results showed that more than half of the patients had crestal soft tissues at edentulous sites thicker than 2 mm, and there was a weak correlation between soft tissue thickness and hard tissue measurements.
Article
Dentistry, Oral Surgery & Medicine
Chun Yi, Sha Li, Aonan Wen, Yong Wang, Yijiao Zhao, Yu Zhang
Summary: This study compared the ability of conventional CBCT and digital registration to evaluate the accuracy of implant positioning in guided surgery. The results showed good agreement between the two methods.
Article
Dentistry, Oral Surgery & Medicine
Zhuo-Lin Kong, Ge-Ge Wang, Xue-Ying Liu, Zhang-Yan Ye, Dong-Qian Xu, Xi Ding
Summary: The study used CBCT data to investigate the anatomical relationship between the mandibular molar and alveolar bone for the design of implant restoration. Results showed no significant differences in morphology between the left and right lower first molars, with morphology classified into straight, oblique, and concave types. The proposed classification provides evidence for appropriate selection and design of mandibular molar implants, with the concave type posing the highest risk of lingual perforation.
Article
Chemistry, Physical
Jae-Hong Lee, Eun-Hee Jung, Seong-Nyum Jeong
Summary: The study compared the outcomes of guided bone regeneration using L-shaped porcine block bone and L-shaped bovine block bone for peri-implant dehiscence defects. The results indicate that there was no significant difference between the two in clinical, radiographic, and volumetric outcomes.
Article
Dentistry, Oral Surgery & Medicine
Yanhua Lan, Xiaoyuan Huang, Mingxing Fan, Huazhen Yu, Zhijian Xie, Yiqun Zhou
Summary: This study investigates the accuracy of cone beam computed tomography (CBCT) with a novel visualization method (NVM) for measuring peri-implant bone thickness in living patients. The NVM proved to be valid in ex vivo experiments and allowed for accurate visual assessment of implant dimensions. However, CBCT scans alone were found to be insufficient for surgical intervention, as they often underestimated thin peri-implant bones.
CLINICAL ORAL INVESTIGATIONS
(2022)
Article
Medicine, General & Internal
Franz Sebastian Schwindling, Sophia Boehm, Christopher Herpel, Dorothea Kronsteiner, Lorenz Vogel, Alexander Juerchott, Sabine Heiland, Martin Bendszus, Peter Rammelsberg, Tim Hilgenfeld
Summary: This study investigated the geometric reproducibility of 3D implant planning based on MRI and CBCT, finding that CBCT showed higher intra- and inter-rater reproducibility compared to MRI. However, further research is needed to enhance planning reproducibility and standardize 3D implant planning for both modalities.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Dentistry, Oral Surgery & Medicine
Qianting Liao, Yingqi Chen, Yanfen Liao, Keqian Lian
Summary: This study systematically analyzed the anatomical and distribution characteristics of the lingual foramen in the entire mandible. The lingual foramen was found to be more commonly located in the central incisor area of the alveolar ridge. The authors recommend a comprehensive evaluation of both the upper and lower lingual foramina before implant surgeries.
CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH
(2022)
Article
Critical Care Medicine
R. M. Sellei, U. Warkotsch, P. Kobbe, C. D. Weber, N. Reinhardt, M. de la Fuente, K. Radermacher, F. Hildebrand
Summary: This study investigated the reproducibility of compartment elasticity measurements by a novel ultrasonic approach using a simulated in-vitro model. The results showed that the method reliably assesses the elasticity in the simulated compartment model and has the potential to be an alternative to invasive measurements, with a high sensitivity and specificity for diagnosing high pressure conditions related to acute compartment syndrome.
INJURY-INTERNATIONAL JOURNAL OF THE CARE OF THE INJURED
(2021)
Article
Engineering, Biomedical
Mark Verjans, Philipp Schleer, Max Kinzius, Philipp Krumholz, Lovis Phlippen, Sergey Drobinsky, Klaus Radermacher
Summary: The study evaluated the usability of a new stair-climbing and self-balancing approach (SEBARES) in emergency medical services. Results showed that SEBARES operation had good ergonomic performance, maintaining a healthy posture for users during transportation, with only 47% of the force required compared to traditional equipment.
BIOMEDICAL ENGINEERING-BIOMEDIZINISCHE TECHNIK
(2021)
Article
Engineering, Biomedical
Philipp Schleer, Manuel Vossel, Lotte Heckmann, Sergey Drobinsky, Lukas Theisgen, Matias de la Fuente, Klaus Radermacher
Summary: This study evaluated the usability of a cooperative surgical telemanipulator in a laboratory setting, with participants showing higher efficiency and subjective user satisfaction in tasks like bone tissue differentiation and milling. Haptic feedback only played a role in improving user satisfaction.
INTERNATIONAL JOURNAL OF COMPUTER ASSISTED RADIOLOGY AND SURGERY
(2021)
Article
Engineering, Biomedical
Manuel Vossel, Meiko Muller, Annegret Niesche, Lukas Theisgen, Klaus Radermacher, Matias de la Fuente
Summary: The robotic system presented in the paper has a handy and lightweight design, allowing it to be easily held by surgeons without the need for rigid fixation to bone or a cart. It is capable of dynamically compensating for unintended motion and achieves high precision positioning when following a moving target.
INTERNATIONAL JOURNAL OF COMPUTER ASSISTED RADIOLOGY AND SURGERY
(2021)
Article
Biophysics
Maximilian C. M. Fischer, Philipp Damm, Juliana Habor, Klaus Radermacher
Summary: The prediction of hip joint force (HJF) is crucial for preventing edge loading in total hip arthroplasty. This study introduces a modular framework for predicting HJF using static models and compares it with different cadaver templates and scaling laws for patient-specific adaptation. The results show that the prediction error of the static models is similar to or even smaller than that of dynamic models.
JOURNAL OF BIOMECHANICS
(2022)
Article
Biophysics
Malte Asseln, Sonja A. G. A. Grothues, Klaus Radermacher
Summary: This study investigated the impact of implant design parameters on knee kinematics through both in silico and in vitro analyses, demonstrating significant variations in knee kinematics due to parameter changes.
JOURNAL OF BIOMECHANICS
(2021)
Article
Engineering, Biomedical
Carlos Castelar Wembers, Fabian Flurenbrock, Benedikt Maurer, Anne Benninghaus, Klaus Radermacher, Steffen Leonhardt
Summary: In this study, a novel feedback-controlled mechatronic test-bench that replicates the pulsatile intracranial pressure (ICP) wave is presented. The proposed approach uses MATLAB simulation and a test environment consisting of a linear actuator and a metal bellows to generate the ICP wave profile. The results show that the hardware setup successfully delivers the ICP profile to the intracranial cavity, allowing for flexible testing scenarios for hydrocephalus prototypes.
BIOMEDICAL SIGNAL PROCESSING AND CONTROL
(2022)
Article
Orthopedics
Maximilian C. M. Fischer, Kunihiko Tokunaga, Masashi Okamoto, Juliana Habor, Klaus Radermacher
Summary: The prediction uncertainties of postoperative pelvic tilt and hip joint force have a significant impact on reducing the patient-specific target zones in preoperative planning of total hip arthroplasty. This study highlights the substantial reduction of ROM- and load-based target zones and emphasizes the importance of further research to improve prediction models for both functional parameters.
JOURNAL OF ORTHOPAEDIC RESEARCH
(2022)
Article
Orthopedics
Benjamin Hohlmann, Malte Asseln, Jiacheng Xu, Klaus Radermacher
Summary: This study investigated the shapes of knee joints and explored different morphotypes through cluster analysis and evaluation metrics. The results showed that knee shape is highly individualized and not significantly influenced by hidden variables such as gender, body type, or ethnicity.
Article
Engineering, Biomedical
Lukas Theisgen, Florian Strauch, Matias de la Fuente Klein, Klaus Radermacher
Summary: This study proposes an integrative approach to identify hazards in the development of medical robots and prevent the adoption of hazardous precedents. By using the Point-of-View approach and the Catalogue of Hazards, the comprehensiveness and systematicness of the hazard identification methods can be increased.
BIOMEDICAL ENGINEERING-BIOMEDIZINISCHE TECHNIK
(2023)
Article
Orthopedics
Sonja Grothues, Benjamin Hohlmann, Sumesh M. Zingde, Klaus Radermacher
Summary: In total knee arthroplasty, choosing the appropriate femoral implant size is crucial for postoperative knee function. This study optimized the distribution of implant sizes to maximize population coverage and found that the sensitivity to error bounds is greater than the number of implant sizes.
JOURNAL OF ORTHOPAEDIC RESEARCH
(2023)
Article
Engineering, Biomedical
Sonja Grothues, Ann-Kristin Becker, Benjamin Hohlmann, Klaus Radermacher
Summary: For patients undergoing total knee arthroplasty (TKA), it is important to correct genetic deformities or deformities related to osteoarthritis. A parametric database of knees was used to develop clinical and mathematical approaches to distinguish between affected and unaffected parameters. Various prediction methods were used to restore physiological knee parameter values, with regression yielding the lowest errors. Future analyses should consider other deformities and the functional consequences of parameter changes.
BIOMEDICAL ENGINEERING-BIOMEDIZINISCHE TECHNIK
(2023)
Article
Acoustics
Peter Broessner, Benjamin Hohlmann, Kristian Welle, Klaus Radermacher
Summary: An ultrasound-based computer-assisted approach is proposed to improve the accuracy and precision of screw placement for percutaneous fixation of scaphoid fractures. This approach also reduces radiation dose and computation time by employing deep learning-based methods for US segmentation and registration. Validation experiments on 3-D printed carpal phantoms demonstrate successful screw placement with minimal deviations from the planned axis and a total duration of about 12 seconds, allowing seamless integration into the surgical workflow.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2023)
Article
Engineering, Biomedical
Noah Wickel, Manuel Vossel, Okan Yilmaz, Klaus Radermacher, Armin Janss
Summary: Since 2019, intraoperative networking using ISO IEEE 11073 SDC has enabled standardized multi-vendor data exchange between medical devices for the first time. To achieve seamless plug-and-play integration of devices, further specifications for device profiles are needed. These generic interfaces will be incorporated into the standardization process.
INTERNATIONAL JOURNAL OF COMPUTER ASSISTED RADIOLOGY AND SURGERY
(2023)
Meeting Abstract
Neurosciences
Anne Benninghaus, Florian Huber, Alexander Mueller, Klaus Radermacher
FLUIDS AND BARRIERS OF THE CNS
(2022)
