Dynamic measurement of local displacements within curing resin-based dental composite using optical coherence
Peter H Tomlins1, Mohammed Wahidur Rahman2, Robert S Donnan2
1Queen Mary University of London, Barts & The London School of Medicine & Dentistry, Turner Street, London, United Kingdom.
Abstract:
This study aimed to determine the feasibility of using optical coherence elastography to measure internal displacements during the curing phase of a light-activated, resin-based composite material. Displacement vectors were spatially mapped over time within a commercial dental composite. Measurements revealed that the orientation of cure-induced displacement vectors varied spatially in a complex manner; however, each vector showed a systematic evolution with time. Precision of individual displacements was estimated to be ∼1 ∼1 to 2 μm 2 μm , enabling submicrometer time-varying displacements to be detected.
