![]() And that means methods for teaching and training future dentists must keep pace. Staggering advancements in science and technology like those helping Hailey are also rapidly changing dentistry. While the lab mills the new appliance, Hailey, her mother and little sister grab some lunch and explore the University District with plans to return later that afternoon for her final fitting. Now it all can be done in a single day, and the patient’s time in the chair is spent much more comfortably. From physical impression to hand-fabrication to fitting, that process used to take about a week and require as many as six different office visits to get everything right. With traffic, that could take another hour. A courier then will deliver the prosthetic to the UW Dental Clinic. With staining, coloring and glazing, the entire process will take about an hour. Chen then sends the image files electronically to a lab in Renton, where they are plugged into a software program that mills a block of material into what will become Hailey’s new teeth. The digital impressions taken of Hailey’s uppers, lowers and bite took all of three minutes to scan optically. “Now, the dentist is designing and the software auto-assists. “Before, you had to design restorations by hand at a lab,” Chen says. Hailey requests her new teeth be whiter, too. Chen uses the computer like an Etch A Sketch as Hailey and her mother dictate aesthetics. ![]() Similar to a denture without gums, the dental appliance will snap snugly into place over her existing teeth, the scanning device having tracked precise paths of insertion. The intra-oral scan initiates a rapid process for creating a set of cosmetically pleasing artificial upper teeth for Hailey. She has only six adult teeth-two incisors in front and four molars in back-in addition to several baby teeth that stubbornly have held on. Hailey has ectodermal dysplasia, a genetic disorder that stunted her dental development-and arrested her self-confidence. It shows every detail of every one of her teeth-of which there are too few. Behind Hailey’s head, a computer monitor displays the pictures, which have been stitched together electronically into a high-resolution 3-D map of Hailey’s mouth. In reality, it is an intra-oral optical scanner capable of recording thousands of images per second. All rights reserved.To Hailey, a bashful 14-year-old with silky brown hair, the wand is like magic. The use of EyeSpy with an occlusive patch outperformed EyeSpy with dissociative glasses.Ĭopyright (c) 2010 American Association for Pediatric Ophthalmology and Strabismus. The 2 results concurred in 63 (87.5%) of 72 subjects.ĮyeSpy software has potential for use as a vision-screening device. EyeSpy screening results using a patch were not significantly different than those of a professional examination (p = 0.508). The sensitivity, specificity, and conventional positive likelihood ratio were 88%, 87%, and 6.8 when EyeSpy was used with a patch 88%, 74%, and 3.44 when EyeSpy was used with goggles and 88%, 94%, and 13.79 for EVA/stereospsis, respectively, compared with the gold-standard professional eye examination. Prevalence of visual impairment was 25 (34.7%) of 72 as reported by the professional examination. The average age of 72 subjects was 11.4 +/- 2.2 years. Similar threshold values were used in the EVA/stereopsis testing. EyeSpy registered pass or refer results for visual acuity testing at a threshold of 20/32 visual acuity and stereopsis of 300 arcsec. The EyeSpy test was performed twice (with an occlusive eyepatch and red-blue dissociative goggles). The order of presentation of the EVA and EyeSpy assessments was assigned randomly. In this pilot study, all children were tested with an EyeSpy and ETDRS EVA tester, followed by ocular examination including stereopsis assessment and cyclopegic refraction. We also compared combined results of an electronic visual acuity (EVA) tester and stereopsis testing to the results of a professional eye examination. To compare the vision-screening results of school-aged children tested with EyeSpy software and those of children examined by a pediatric ophthalmologist.
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