DIGITAL LASER SPECKLE TECHNOLOGIES IN MEASURING BLOOD FLOW IN BIOTISSUES AND THE STRESSED-STRAINED STATE OF THE MAXILLODENTAL SYSTEM

A method has been developed for estimating the stressed-strained state in the ″orthodontic apparatus–dentin″ system with the use of laser-optical diagnostics based on speckle photography. We have determined the indices of the stressed-strained state in the ″orthodontic apparatus–dentin″ system depending on the composition and form of the orthodontic arch cross section. We have determined the optimum indices of the stressed-strained state of orthodontic arches in patients with periodontium diseases in combination with maxillodental anomalies and deformations, to which the following arches correspond: from copper–nickel–titanium (CuNiTi) alloy with circular (0.012″, 0.013″, 0.014″, 0.016″, 0.018″), and rectangular (0.014 × 0.025″, 0.016 × 0.025″) cross sections, from titanium–molybdenum alloy (TMA) with a rectangular cross section (0.016 × 0.025″), and from stainless steel (SS) with a circular (0.016″, 0.018″) cross section. Direct correlation has been established between indices of the stressed-strained state in the ″orthodontic apparatus–dentin″ system and the periodontium capillary pressure (r = 0.78, p < 0.05), as well as  inverse strong correlation with the periodontium microcirculation intensity (r = –0.88, p < 0.05)
   
Author:  S. P. Rubnikovich, Yu. A. Denisova, and N. A. Fomin
Keywords:  speckle technologies, speckle pattern, digital speckle interferometry, biospeckle fi eld, biotissues, stressedstrained state
Page:  1513