Tobin, Mark J.; Chalmers, John M.; Harris, Andrew T.; Fisher, Sheila E.; TobinThe author's address while the studies reported in this chapter were being undertaken was: Synchrotron Radiation Department, CCLRC Daresbury Laboratory, Warrington, Cheshire WA4 4AD, UK Mark J.; Principal Scientist, Infrared Beamline; ChalmersPresent address: VS Consulting, Stokesley, UK John M.; School of Chemistry, University of Nottingham, University Park; Harris Andrew T.; CR-UK Research Fellow. Faculty of Medicine and Health, University of Leeds; Fisher Sheila E.; Senior Lecturer/Hon. Consultant in Maxillofacial Surgery, Faculty of Medicine and Health, University of Leeds; Faculty of Medicine and Health