Three impression techniques were assessed for accuracy in a laboratory cast that simulated clinical practice. The first technique used autopolymerizing acrylic resin to splint the transfer copings. second involved splinting of copings directly an custom tray. In third, only material was orient stone casts with implant analogs measured against master framework. fit framework on tested using strain gauges. significantly more accurate than two other techniques. Stresses observed are described...

Background Deep learning (DL)‐based automatic segmentation models can expedite manual yet require resource‐intensive fine‐tuning before deployment on new datasets. The generalizability of DL methods to datasets without is not well characterized. Purpose Evaluate the DL‐based by deploying pretrained independent varying MR scanner, acquisition parameters, and subject population. Study Type Retrospective based prospectively acquired data. Population Overall test dataset: 59 subjects (26...

We systematically evaluate the training methodology and efficacy of two inpainting-based pretext tasks context prediction restoration for medical image segmentation using self-supervised learning (SSL). Multiple versions U-Net models were trained to segment MRI CT datasets, each a different combination design choices determine effect these on performance. The optimal used train SSL that then compared with baseline supervised computing clinically-relevant metrics in label-limited scenarios....

Dilatometric strain sensors (DSS) that work based on detection of volume change in microfluidic channels; i) are highly sensitive to biaxial strain, ii) can be fabricated using only soft and transparent materials, iii) easy integrate with smart-phones. These features especially attractive for contact lens intraocular pressure (IOP) sensing applications. The inherent flow stabilization the systems is an additional advantage suitable filtering out rapid fluctuations. Here, we have demonstrated...

Significant national investments have aided the development of practice-based research networks (PBRNs) in both medicine and dentistry. Little evidence has examined translational impact these efforts whether PBRN involvement corresponds to better adoption best available evidence. This study addresses that gap knowledge examines changes early dental decay among participants non-participants with access same evidence-based guideline. following questions regarding participation: are practice...

Anterior cruciate ligament (ACL) rupture commonly leads to post-traumatic osteoarthritis, regardless of surgical reconstruction. This study uses standing MRI investigate changes in contact area, centroid location, and tibiofemoral alignment between ACL-injured knees healthy controls, examine the effect ACL reconstruction on these parameters.An upright, open was used directly measure 18 individuals with unilateral within last five years. Eight participants had been treated nonoperatively ten...

Magnetic resonance imaging (MRI) is a cornerstone of modern medical imaging. However, long image acquisition times, the need for qualitative expert analysis, and lack (and difficulty extracting) quantitative indicators that are sensitive to tissue health have curtailed widespread clinical research studies. While recent machine learning methods MRI reconstruction analysis shown promise reducing this burden, these techniques primarily validated with imperfect quality metrics, which discordant...

Abstract Objectives: To compare the outcomes of restorations placed by restorative function auxiliaries (RFAs) with those dentists. Methods: Between July 1, 2007, and June 30, 2008, we matched 455 RFAs working at HealthPartners Dental Group same number Restorations were tooth number, American Association procedure code, patient age‐group. Results: Of 910 restorations, 17 (1.9 percent) had problems potentially related to filling or crown placement during first year. Problem rates not...

Abstract Purpose Case‐based simulations are powerful training tools that can enhance learning and drive behavior change. This is an overview of the design/development Dental Decision Simulation (DDSim), a web‐based simulation electronic dental record (EDR). The purpose was to use DDSim train dentists make evidence‐based treatment planning decisions consistent with current evidence. simulated EDR provides case‐based information in support set defined objectives. Methods development this...

Abstract Background Imaging cannot be performed during natural weightbearing in biomechanical studies using conventional closed-bore MRI, which has necessitated simulating load on the joint. Upright, open MRI (UO-MRI) allows for joint imaging and may have potential to better characterize effect of tibiofemoral pathology involving soft tissues. However scanners lower field strengths than scanners, limits image quality that can obtained. Thus, there is a need establish reliability measurements...

Knee osteoarthritis is thought to result, in part, from excessive and unbalanced joint loading. Toe-in toe-out gait modifications produce alterations external knee moments, some improvements pain over the short- long-term. The aim of this study was probe mechanisms altered loading through assessment tibiofemoral contact standing with toe-in positions using an open magnetic resonance scanner. In study, 15 young, healthy participants underwent imaging one their knees 3 foot positions. Images...

Motivation: Patellar tendinopathy (PT) is a common injury in basketball that can lead to early retirement. Basketball influences bone shape and cartilage composition, yet the association between these factors PT unknown. Goal(s): We examined PT, shape, patellar composition collegiate players. Approach: developed measure of indicative investigated whether PT-associated associated with T2/T1ρ. Results: effectively separated grades using identified features PT. found independent shape....

Motivation: Patellar tendinopathy (PT) is a common athletic overuse injury affecting either or both knees that can lead to pain and early sport retirement. However, athlete reported differences between bilateral unilateral PT remains unknown. Goal(s): We tested the hypothesis athletes with MRI signs of have more self-reported knee problems compared no PT. Approach: 53 pre-season elite college were bilaterally imaged completed surveys. Statistical tests conducted determine no, unilateral,...

5 healthy subjects consistently performed a declined squad training routine for 3 months. Every subject received an MRI scan before undergoing the and subsequently every month until end of training. We observed decrease in AD, MD FA over course training, with significant change after 1 month. Muscle volume increased, changes only apparent at Changes diffusion parameters were predictive global volume. Our study shows that DTI can be sensitive tool to muscle hypertrophy could used early...

The loss of muscle strength was previously thought to be primarily impacted by the volume due sarcopenia during aging, however, this did not explain why declined more rapidly than volume. To better understand this, our study aimed explore Diffusion Tensor Imaging parameters and their correlations in addition As expected, had a strong positive correlation with all functional tests. However, we also observed that radial diffusivity significant negative eccentric tests, but no found concentric

Gait retraining has been studied as an intervention to improve osteoarthritis symptoms but a variety of limitations. An alternative approach may be muscle strengthening interventions that have known impacts on gait changes. However, limited studies examined the quantitative relationships between and gait. Here, we combine rapid MRI protocol with wearable sensors determine 12-week exercise induced significant changes in both quadricep morphology kinematics. Morphological different muscles...

Current evaluation methods of rehabilitation following acute musculoskeletal injuries are largely qualitative. MRI and biomechanics tools can provide sensitive, quantitative measures knee joint lower extremity muscle changes, but the relationship between gait markers is not well characterized. We combined an protocol with wearable sensors in healthy participants to characterize kinematic asymmetries thigh cartilage morphology composition. show that vastus lateralis (VL) microstructure...

Abstract Background: Biomechanical studies are often performed using conventional closed-bore MR, which has necessitated simulating weightbearing load on the joint. The clinical applicability of these biomechanical findings is unclear because limitations weightbearing. Upright, open MRI (UO-MRI) can be used to assess knee joint mechanics, in particular contact area and centroid location. However, it not clear how reliably measurements location made upright postures. Methods: Manual...

Abstract Background: Biomechanical studies are often performed using conventional closed-bore MR, which has necessitated simulating weightbearing load on the joint. The clinical applicability of these biomechanical findings is unclear because limitations weightbearing. Upright, open MRI (UO-MRI) can be used to assess knee joint mechanics, in particular contact area and centroid location. However, it not clear how reliably measurements location made upright postures. Methods: Manual...

Abstract Background: In biomechanical studies using conventional closed-bore MR, imaging cannot be performed during natural weightbearing which has necessitated simulating load on the joint. Upright, open MRI (UO-MRI) allows for joint and may have potential to better characterize effect of tibiofemoral pathology involving soft tissues. However scanners lower field strengths than scanners, limits image quality that can obtained. Thus, there is a need establish reliability measurements in...

Abstract Background: Imaging cannot be performed during natural weightbearing in biomechanical studies using conventional closed-bore MRI, which has necessitated simulating load on the joint. Upright, open MRI (UO-MRI) allows for joint imaging and may have potential to better characterize effect of tibiofemoral pathology involving soft tissues. However scanners lower field strengths than scanners, limits image quality that can obtained. Thus, there is a need establish reliability...