I don't think that the chipping is related to any deficiency. It is possible that these teeth have been filled previously and that either the tooth structure has weakened over time or the filing has broken down. You need to see your dentist for the appropriate restorations.
Or problems with your occlusion - perhaps the tips have worn off your canines so that now when you slide from side to side the canines no longer open the bite and protect the other teeth. ie Perhaps you have gone from a canine guided occlusion to group function.
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