Crowns (caps) are used to cover teeth that are weakened by decay, severely damaged, chipped or discolored. Crowns are frequently on teeth required after root canal therapCrowns (caps) are used to cover teeth that are weakened by decay, severely damaged, chipped or discolored. Crowns are frequently on teeth required after root canal therapCrowns (caps) are used to cover teeth that are weakened by decay, severely damaged, chipped or discolored. Crowns are frequently on teeth required after root canal therap