[1] Griffith Univ, Sch Med & Dent, Ian OConnor Bldg G40, Gold Coast, Qld 4215, Australia
[2] Griffith Univ, Adv Design & Prototyping Technol Inst, Gold Coast, Qld 4215, Australia
[3] Lebanese Univ, Fac Dent Med, Beirut 1107, Lebanon
[4] La Trobe Univ, La Trobe Rural Hlth Sch, Dept Rural Clin Sci, Bendigo, Vic 3550, Australia
[5] La Trobe Univ, Violet Vines Marshman Ctr Rural Hlth Res, La Trobe Rural Hlth Sch, Bendigo, Vic 3550, Australia