A5020790983- Dental Implant Techniques and Outcomes
- Dental Radiography and Imaging
- Dental materials and restorations
- Periodontal Regeneration and Treatments
- Advanced X-ray and CT Imaging
- Cleft Lip and Palate Research
- Endodontics and Root Canal Treatments
- Orthopaedic implants and arthroplasty
- Growth Hormone and Insulin-like Growth Factors
- Anatomy and Medical Technology
- Nuclear Physics and Applications
- Head and Neck Cancer Studies
- Pituitary Gland Disorders and Treatments
- Orthodontics and Dentofacial Orthopedics
- COVID-19 and healthcare impacts
- Dental Erosion and Treatment
- Reconstructive Facial Surgery Techniques
- Infection Control and Ventilation
- Radiation Dose and Imaging
- Medical Imaging and Analysis
- Pressure Ulcer Prevention and Management
- Bone Tissue Engineering Materials
- Ophthalmology and Eye Disorders
University of Freiburg
2019-2025
University Medical Center Freiburg
2021
UConn Health
2015-2019
University of Connecticut
2015-2016
University of Basel
2008
Optical impressions of implants in the edentulous arch are challenged by absence distinct surface morphology between multiple implant scan bodies. The purpose this vitro study was to evaluate a newly developed aid various designs and colors improve accuracy multi-implant scans.A universal three different (circular, square, irregular) materials (colors: beige, gray, white) applied bodies master model six an maxilla. Ten scans using intra-oral scanner each were acquired. Reference scanning...
Intraoral scans of multiple implants in the edentulous arch are challenged by absence a distinct surface morphology between scan bodies. A aid was applied such situation and evaluated for intraoral scanning accuracy vivo.87 22 patients were scanned with (SA) without (NO) using two different scanners (CS3600 [CS] TRIOS3 [TR]). Master casts digitized laboratory scanner. Virtual models superimposed an inspection software Linear deviation precision measured. Statistical analysis performed linear...
Reference elements are necessary to transfer a virtual planning into reality for guided implant placement. New systems allow matching optical scans with three-dimensional radiographic images.To test whether digitally designed printed templates (D-temp) fabricated by surface and cone beam computed tomography (CBCT) images differ from the in-lab (L-temp) using physical device positioning of guiding sleeves.L-temp were eight human lower cadaver-jaws applying digital software program (smop,...
This clinical study aimed to evaluate the accuracy of digital and conventional implant impressions in a fully edentulous maxilla mandible. A 53-year-old patient with four maxillary two mandibular implants was selected. Ten intraoral scans (IOS) impression per jaw were taken. Clinically verified upper lower plaster models digitized using both optical (reference data, n = 10 model) tactile laboratory scanner (n model). Accuracy evaluated by comparing precision linear/angular deviations...
The tasks of Working Groups 1 to 6 at the 4th Consensus Meeting Oral Reconstruction Foundation were elucidate clinical recommendations for implant-supported full-arch rehabilitations in edentulous patients. Six systematic/narrative reviews prepared address following subtopics: (1) influence medical and geriatric factors on implant survival; (2) prevalence peri-implant diseases; (3) material selection, attachment type, interarch space, opposing dentition; (4) different interventions...
Abstract The ongoing COVID-19 pandemic has revealed alarming shortages of personal protective equipment for frontline healthcare professionals and the general public. Therefore, a 3D-printable mask frame was developed, its air seal performance evaluated compared. Personalized masks (PM) based on individual face scans (n = 8) statistically shaped (SSM) standardized facial soft tissue shape computed from 190 were designed. Subsequently, additively manufactured, in second step, PM SSM compared...
Abstract Objectives The main objective was to develop and evaluate an artificial intelligence model for tooth segmentation in magnetic resonance (MR) scans. Methods MR scans of 20 patients performed with a commercial 64-channel head coil T1-weighted 3D-SPACE (Sampling Perfection Application Optimized Contrasts using different flip angle Evolution) sequence were included. Sixteen datasets used training 4 accuracy evaluation. Two clinicians segmented annotated the teeth each dataset. A trained...
The objective of this in vitro study was to assess the accuracy fully guided implant placement following virtual planning based on MRI.Sixteen human cadaver hemimandibles with single missing teeth (n = 3), partially edentulous 6) and situations 7) were imaged using MRI. MRI optical scans obtained an intraoral scanner, imported into software. Virtual prosthetic performed regarding hard- soft-tissue anatomy. Drill guides manufactured, performed. Buccal lingual bone nerve distance measured by...
Synchrotron radiation-based micro computed tomography (SRμCT) is well established to determine the degree of mineralization in bony tissue. The present study demonstrates that method can be likewise used for three-dimensional analyses dentin de- and remineralization. Four discs about 4 mm diameter 0.8 thick were prepared from freshly extracted human third molars. In order re-mineralization, three them treated with 10% citric acid period 10 min. Nano-particulate bioactive glass made...
Autologous bone grafts are the gold standard to augment deficient alveolar bone. Dimensional graft alterations during healing not known as they accessible radiography. Therefore, MRI was used display autologous onlay in vivo early healing.Ten patients with atrophy and were included. performed a clinical MR system an intraoral coil preoperatively (t0), 1 week (t1), 6 weeks (t2) 12 (t3) postoperatively, respectively. The volumes assessed by manual segmentation three examiners. Graft for each...
Abstract Acromegaly is an adult endocrine disorder that results from excessive growth hormone after closure of the plates and associated with significant morbidity increased mortality. The orofacial features patients acromegaly are thick lips a tendency towards mandibular overgrowth prognathism, jaw thickening, maxillary widening, drifting teeth, malocclusion, gonial angle, all which can challenge prosthodontist in dental rehabilitation. Additionally, secretion insulin‐like factors have been...
Abstract Background The stability of implant-abutment connection is crucial to minimize mechanical and biological complications. Therefore, an assessment the microgap behavior abutment displacement in different designs was performed. Methods Four implant systems were tested, three with a conical based on friction fit cone angle < 12 ° (Medentika, Medentis, NobelActive) system angulated (< 40°) (Semados). In static loading conditions (30 N − 90º, 100 200 30º) evaluated using...
Die zahnärztliche Implantologie wurde durch die Einführung digitaler Technologien revolutioniert. Verbindung Bildgebung (Datenakquise), computergestützter Behandlungsplanung (CAD) und Herstellung (CAM) funktioniert als digitale Prozesskette ermöglicht einen vorhersagbaren effizienten Behandlungsablauf. Dieser Artikel beleuchtet diagnostische, prothetische chirurgische Aspekte der digitalen bis hin zur Anfertigung von provisorischen implantatgetragenen Restaurationen.
To evaluate the impact of reducing radiographic field view (FOV) on trueness and precision alignment between cone beam computed tomography (CBCT) intraoral scanning data for implant planning.Fifteen participants presenting with one three clinical scenarios: single tooth loss (ST, n = 5), multiple missing teeth (MT, 5) presence artifacts (AR, were included. CBCT volumes covering full arch (FA) reduced to quadrant (Q) or adjacent tooth/teeth (A). Two operators, an expert (exp) in virtual...
Abstract Purpose To investigate the influence of teeth and dental restorations on facial skeleton's gray value distributions in cone-beam computed tomography (CBCT). Methods Gray selection for upper lower jaw segmentation was performed 40 patients. In total, CBCT data 20 maxillae mandibles, ten partial edentulous fully each jaw, respectively, were evaluated using two different procedures: manual threshold automated selection. Two sample t tests, linear regression models, mixed Pearson's...