My Guinea Pigs Tooth chipped need help?

My Guinea Pig climbed up on my shoulder last night while I was playing Battlefield 1943 and he tried to hop to his cage but he smacked face first into the bars and fell on the floor. I put him back in his cage but when I checked him out later I noticed that one of his top teeth were chipped off. I also took a closer look this morning and it seems that the other top tooth is extremely loose. I have checked online that I need to feed him calcium rich food and soft veggies. Is there anything else I can do. Because is worse comes to worse. I might have to put him down humanely.