[Assessment of supracontacts size at digital positioning of scans in habitual occlusion].

The study is devoted to the error analysis of digital registration of lower and upper jaws laboratory and intraoral scans in position of habitual occlusion. It was found that in both cases, penetrating contacts (supracontacts) are formed, and their depth is in the range (-50) - (0) microns. The number and area of these contacts is higher for lateral teeth. The number and area of supracontacts is higher for laboratory scanning (3.7±1.81 mm2) than for intraoral scanning (0.5±0.42 mm2). Applying virtual contact optimization does not change the localization of contacts, but rather normalizes them in both cases. It is recommended to perform this preliminary correction before the planning stage in 3D dental treatment.