Sharp-stabbing pain lasting a few seconds is normal and typically indicates transient nerve compression, called the 'precordial pinch'; 3. Caffeine can cause some normal heart rate increase, which can be associated with chest discomfort. ...Read more.
The price for Invisalign cases will generally vary depending on the complexity of the case. On average a fairly straight forward case might cost between $3000-$4000, and a more complex case may cost $5000-$6500.
The average cost of Invisalign often gets quoted at around the $5000 mark (this is the price that Invisalign detailed back in 2010) and comes within the estimated range of between $3500 to $8000. Today in 2014, the price isn't actually too different.