Occlusion Timeline Analyses with T-Scan III System in Subjects with Neutroocclusion

Occlusion evaluation based only upon static parameters in such a dynamic masticatory system is unsufficient. Therefore, timeline analysis with T-Scan III System is important in diagnose, therapy plan in all phases of orthodontic treatment in every day clinical practice. The aim of this study is to analyse the occlusal force and occlusal contacts distribution over the course of time with the T-Scan III System precise analysis in subjects with neutroocclusion. We included 30 subjects with neutroocclusion, Angle Class I, at the age of 16-29 years, desribing the time and force moment statistics of occlusal contacts in the sagittal and transverse axes of the occlusal plane. We analysed the bite in every 0, 15 seconds from the first registred antagonistic tooth contact at inicial time t1 until terminal time t10. At time t1, 40 % from the subjects with neutroocclusion occluded first in the anterior region. At time t10, subjects had dominant occlusal contacts in the premolar and molar region with 36, 3 %. Occlusal force distribution in the right and left halves of the dental arch changes in time. Changes in the total occlusal force (TOF) modifies the distribution of occlusal contacts. Our detailed analysis of occlusion over elapsed time showed that initially the central incisors are the teeth that come together in occlusal contact. This is a result of their role of guidance. Analysis of masticatory cycle in time shows tendency for force distribution towards the posterior region at the end of the bite.