title: Dynamic measurement of local displacements within curing resin-based dental composite using optical coherence elastography.
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.
authors.affiliation: Queen Mary University of London, Barts & The London School of Medicine & Dentistry, Turner Street, London, United Kingdom.
authors.forename: Peter H
authors.initials: PH
authors.lastname: Tomlins
authors.affiliation: Queen Mary University of London, School of Electrical Engineering & Computer Science, Mile End Road, London, United Kingdom.
authors.forename: Mohammed Wahidur
authors.initials: MW
authors.lastname: Rahman
authors.affiliation: Queen Mary University of London, School of Electrical Engineering & Computer Science, Mile End Road, London, United Kingdom.
authors.forename: Robert S
authors.initials: RS
authors.lastname: Donnan
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry*; D054459:Elasticity Imaging Techniques / Q000379:methods*; D008422:Materials Testing; D011140:Polyurethanes / Q000737:chemistry*; D041623:Tomography, Optical Coherence / Q000379:methods*
chemical_list: D000180:Acrylic Resins; C029012:Composite Dental Resin; D003188:Composite Resins; D011140:Polyurethanes