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The Evolution of the Science of Measured Digital Occlusion: From the T-Scan I to the T-Scan 10 Computerized Occlusal Analysis Systems
Abstract
Since its inception in 1984, computerized occlusal analysis technology has revolutionized both dental occlusal science and daily clinical practice by bringing objective precision measurement to the largely subjectively analyzed dental medicine discipline of occlusion. The science of Measured Digital Occlusion is a major clinical advance over traditional, subjectively practiced occlusion. This is because T-Scan measured timing and force metric-based occlusal function parameters guide both the diagnosis of an occlusion's health, but also aid the clinician in obtaining high-precision, high-numerical tolerance measured occlusal function outcomes, that can't be attained without the T-Scan's capacity to make specific occlusal functional measurements. The development of the T-Scan technology has required much iteration over the past 40 years beginning with T-Scan I, then T-Scan II for Windows®, then T-Scan III with turbo recording, to a simplified desktop version introduced in T-Scan 8, to the present day, state of the art occlusal analysis version known as T-Scan 10 Novus. Numerous authors since the mid-1980s have studied the various T-Scan versions, which inspired the manufacturer to improve the hardware and its recording sensors to be more accurate, repeatable, and precise. The present-day Novus recording handle represents a major ergonomic and functional upgrade over the Evolution handle that was used up to T-Scan 8, while the T-Scan 9 software has evolved into T-Scan 10 Novus system, which includes many new high-tech measurement tools like the Digital Impression Overlay (DIO), the Sensitivity Wizard, the Implant Warning Feature, and the Force Eraser tool. All of these new system modifications improve the clinician's ability to diagnose and treat a wide range of occlusal abnormalities. Chapter one's specific aims are to detail the evolution of the differing T-Scan system versions, and outline the functional measured digital occlusion parameters that have been applied in many scientific patient treatment studies that resulted from important system improvements to the T-Scan's accuracy and repeatability, from version to version. Chapter one will also highlight some newly available digital occlusion technologies that somewhat mimic T-Scan, while including a detailed section comparing and contrasting T-Scan data to intraoral scanner (IOS) occlusal representations. Presented studies will illustrate that intraoral scanners (IOS) only prognosticate occlusal contact surface engagement, but do not measure or describe for analysis, occlusal contact force levels or contact timing sequences from within scanned dental arches.
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