Scott C. Fuller

Bio: Scott C. Fuller is an academic researcher from University of California, Davis. The author has contributed to research in topics: Reconstructive surgery & Hypoglossal nerve. The author has an hindex of 7, co-authored 11 publications receiving 304 citations. Previous affiliations of Scott C. Fuller include Veterans Health Administration & United States Department of Veterans Affairs.

Comparison of 3 Optical Navigation Systems for Computer-Aided Maxillofacial Surgery

Abstract: Objective To compare the accuracy of 3 computer-aided surgery systems for maxillofacial reconstruction. Design Evaluation of 3 computer-aided surgery systems: StealthStation, VectorVision, and Voxim. Setting The University of California, Davis, Department of Otolaryngology computer-aided surgery laboratory. Participants Four fresh cadaveric heads. Main Outcome Measure Mean target registration error. Results The StealthStation was the most accurate (mean [SD] target registration error, 1.00 [0.04] mm), followed by VectorVision (1.13 [0.05] mm) and then Voxim (1.34 [0.04] mm). All values met statistical significance ( P Conclusions Measurable accuracy differences were found among the navigation systems evaluated. The StealthStation was the most accurate. However, the differences are small, and the clinical significance for maxillofacial reconstruction is negligible.

Preformed vs intraoperative bending of titanium mesh for orbital reconstruction.

Abstract: ObjectiveThe most accurate orbital reconstructions result from an anatomic repair of the premorbid orbital architecture. Many different techniques and materials have been used; unfortunately, there is currently no optimal method. This study compares the use of preformed vs intraoperative bending of titanium mesh for orbital reconstruction in 2-wall orbital fractures.Study DesignCadaver-based study.SettingUniversity hospital.Subjects and MethodsPreinjury computed tomography scans were obtained in 15 cadaveric heads (30 orbits). Stereolithographic (STL) models were fabricated for 5 of the specimens (10 orbits). Two wall fractures (lamina papyracea and floor) were then generated in all orbits. Surgical reconstruction was performed in all orbits using 1 of 3 techniques (10 orbits each): (1) patient-specific implant molded from the preinjury STL model, (2) titanium mesh sheet bent freehand, and (3) preformed titanium mesh. Each technique was evaluated for orbital volume correction, contour accuracy, ease of us...

Validation of the pharyngeal squeeze maneuver.

Abstract: Objective: The pharyngeal squeeze maneuver (PSM) is a surrogate measure of pharyngeal strength on endoscopy. The validity of this measure has not been reported. The purpose of this investigation wa...

Computer-aided analysis of orbital volume: a novel technique.

Abstract: Objective : To demonstrate the accuracy and efficiency of a novel software tool designed specifically for volumetric analysis of the orbit. Methods : The software was evaluated for accuracy and speed in analysis of orbital CT data sets. The analysis included: 1) intraoperator error: one operator repeatedly evaluated a single orbit multiple times. The variation in volumes was compared; 2) interoperator error: 3 operators evaluated the same orbits multiple times. The variation in volume measurements among operators was compared; 3) interscan error: one operator evaluated the volume of single orbit scanned on multiple occasions by different CT scanners. The variation in volume measurements among scans performed at different times was compared; and 4) time for analysis: one operator evaluated 52 orbits, recording the time it took to analyze each orbit. Results : Intraoperator error was 0.08 cc (95% confidence interval, 0.06-0.10). Interoperator error was 0.18 cc (95% confidence interval, 0.14-0.20). Interscan variability data showed a trend toward increasing error for repeated patient scans using different CT scanners. Average time for analysis of single orbit was 138 seconds (standard deviation = 24; range, 95-217 seconds). Conclusions : Maxillo is an accurate and efficient tool for semiautomatic evaluation of orbital volume in nontraumatized orbits.

3D printed porous ceramic scaffolds for bone tissue engineering: a review.

Abstract: This study summarizes the recent research status and development of three-dimensional (3D)-printed porous ceramic scaffolds in bone tissue engineering. Recent literature on 3D-printed porous ceramic scaffolds was reviewed. Compared with traditional processing and manufacturing technologies, 3D-printed porous ceramic scaffolds have obvious advantages, such as enhancement of the controllability of the structure or improvement of the production efficiency. More sophisticated scaffolds were fabricated by 3D printing technology. 3D printed bioceramics have broad application prospects in bone tissue engineering. Through understanding the advantages and limitations of different 3D-printing approaches, new classes of bone graft substitutes can be developed.

History of Fiberoptic Endoscopic Evaluation of Swallowing for Evaluation and Management of Pharyngeal Dysphagia: Changes over the Years.

Abstract: Back in 1988, when the first description of the FEES procedure was published [1], otolaryngologists had just started to use fiberoptic laryngoscopes in their practice. Prior to fiberoptic technology, laryngoscopy was performed with a mirror or more invasive direct laryngoscopy instruments. The first fiberoptic laryngoscope is generally credited to Sawashima andHirose in 1968. It transformed the practice of laryngoscopy by allowing a transnasal approach with the patient conscious during the procedure and providing a view of the vocal folds during natural speech. Commercial fiberoptic laryngoscopes were not commonly available until the 1980s. I was practicing in Ann Arbor Michigan at the time. In our ENT clinic, the rigid mirror exam was the first exam administered—and if indicated, a transoral laryngoscope was used. Over a relatively short period of time, however, the fiberoptic laryngoscope became the exam of choice for viewing anatomy, physiology, and for biopsies of suspicious masses. The Speech Pathology and Otolaryngology clinics at the Ann Arbor VA shared space and I often watched an ENT exam done on a voice or head/neck cancer patient. It occurred to me that the anatomical region we were most interested in for swallowing function and for detecting aspiration—the larynxwas beautifully portrayed. So, Dr. Nels Olson (ENT faculty), Ken Schatz (SLP), and I explored the ability of the laryngoscope to evaluate swallowing. We hoped that this procedure would enable us to assess a patient at bedside when the patient was unable to get to the Radiology suite. We were disappointed at the lack of information from a healthy volunteer, but when we began to assess patients with dysphagia, we were thrilled. We could visualize spillage, aspiration, residue, structural movements and secretions. We were onto something.

Patient specific implants (PSI) in reconstruction of orbital floor and wall fractures

Abstract: Fractures of the orbital wall and floor can be challenging due to the demanding three-dimensional anatomy and limited intraoperative overview. Misfitting implants and inaccurate surgical technique may lead to visual disturbance and unaesthetic results. A new approach using individually manufactured titanium implants (KLS Martin, Group, Germany) for daily routine is presented in the current paper. Preoperative CT-scan data were processed in iPlan 3.0.5 (Brainlab, Feldkirchen, Germany) to generate a 3D-reconstruction of the affected orbit using the mirrored non-affected orbit as template and the extent of the patient specific implant (PSI) was outlined and three landmarks were positioned on the planned implant in order to allow easy control of the implant's position by intraoperative navigation. Superimposition allows the comparison of the postoperative result with the preoperative planning. Neither reoperation was indicated due to malposition of the implant and the ocular bulb nor visual impairments could be assessed. PSI allows precise reconstruction of orbital fractures by using a complete digital workflow and should be considered superior to manually bent titanium mesh implants.

Implant Placement Accuracy Using Dynamic Navigation

Abstract: Purpose: The aim of this prospective study was to determine platform and angle accuracy for dental implants using dynamic navigation, a form of computer-assisted surgery. Three hypotheses were considered: (1) the overall accuracy for implant placement relative to the virtual plan is similar to that of static tooth-borne computerized tomography (CT)-generated guides; (2) the dynamic system is more accurate than freehand methods; and (3) there is a learning curve associated with this method. Materials and Methods: This study involved three surgeons placing implants in the mandible and maxilla of patients using a dynamic navigation system (X-Guide, X-Nav Technologies). Virtual implants were placed into planned sites using the navigation system computer. Post-implant placement cone beam CT scans were taken on all patients. For each patient, this scan was mesh overlayed with the virtual plan and used to determine platform and angular deviations to the virtual plan. The primary outcome variables were platform and angular deviations comparing the actual placement to the virtual plan. Secondary analyses included determination of accuracy related to case experience and freehand placement of implants. Comparisons to published accuracy studies were made for implant placement using static guides. Results: Accuracy deviations from the virtual plan were similar to those reported for static tooth-based guides using literature references as the comparison. The accuracy of dynamic navigation was superior compared to freehand implant placement. The three surgeons had similar accuracies after their learning curve was achieved. Proficiency based on case series was achieved by the 20th surgical procedure. Conclusion: Dynamic navigation can achieve accuracy of implant placement similar to static guides and is an improvement over freehand implant placement. In addition, there was a learning curve to achieve proficiency.