More food gets lodged at the upper corner of an upper molar that got a permanent crown. the issue started with the temp crown. theres a bit of space in between crown and next tooth but not in between crown and other adjacent tooth. is this abnormal?

The crown should contact both adjacent teeth in order not to form a food trap and to provide a proper occlusion [bite]. If the temp. was on for a long time, the teeth shifted a little. It is best if crown is in with temp. cement to have a it removed with a new impression and a new casting made. If it stays you will be constantly be using a interdental brush, Water Pik and floss to remove food.