Avoid small grains during the first few days following the wisdom teeth extraction surgery so that they do not get caught in the surgical area. Examples include rice, grits or oatmeal. Do not drink with a straw for at least 2 weeks after your procedure. Using a straw can cause pressure changes in the mouth that may cause the blood clot in the surgical site to dislodge and create a dry socket. Instead of using a straw, spoon thicker liquids with a spoon, or just drink them slowly from a cup.
It does sound like your heater core is leaking, to replace you or your mechanic will need to remove the dash to replace. You'll also need to replace the hoses that connect to it via the engine compartment. Figure $700-$900 becuase of all the labor involved. Get an estimate from a few shops first, and to verify the heater core is leaking and not your A/C evap line. 2 out of 2 people think this is helpful.
Considering the cost of new heater cores and the labor involved, the average replacement cost falls in the range of $600 to $900. The cost may vary according to model of the car, location and also the quality of replacement components used.