It seems the major thing any movie on Titanic or many other a subject be it a western, a King Arthur epic or such always seems to flub is the world of dental work. It can be a gross subject in our times, but as well as some of these type of movies in our time have done to bring us back to those times, they almost always show the actors with clean, straight, teeth; which wouldn't be true for most during such a period. I've often noticed that William Murdoch's famous Olympic bridge shot picture seems to show him grinning with some era teeth behind the smile. Not how I think we think of such folks by today's standards. I guess it explains why most of the pictures of the Titanic officers showed broad grins, not full smiles. It does seem those who got some sleep the night Titanic sunk such as Col. Gracie or Harold Bride did, as opposed to Jack Phillips and Officer Moody, faired better. Having recently bought a house and doing day long renovations, on little sleep and lots of determination-- finishing wiped out, I think of those officers who toiled so hard mentally and physically; I really think such mixed with little sleep could do anybody in very quick I'm afraid. Try it sometime, sleep a little, work a ton and when you are ready to finally rest (do so safely of course) think that as you get to go to a nice warm bed, the officers and the like on Titanic had strong currents, falling objects and lethal water to face; sadly quite a grim prospect no matter how old one is.