I got to know from a friend that the amount QP will pay you is the cost of a direct flight at the time of travelling. For example, if you travel during the peak season then the rate will be higher. But if you choose to transit, which normally cause more time but cheaper ticket, then you might save some money from the amount QP pay to you.

As for the dental care, what I know is that the insurance that QP brought for the employees did cover to certain extend.

Hope the above help!