Yellow teeth are more common than we think they are. It is man's nature to look good at all times. Having a great smile is part of that. A Yellowish dentition can turn a pretty smile to an ugly smile. A smile which is flashing discolored dentition can be an undesirable sight to look at. It can have an effect on self-esteem of a man. A person automatically becomes more conscious if he comes to know that he has yellow teeth. This is especially true, in cases where a person is informed of his discolored teeth by a colleague or a friend. The person loses his confidence and becomes hesitant to flash a smile. Even if he does, he tries to hide his teeth. This has detrimental effects on the psychological aspects of a person. Although, having discolored teeth might seem like a trivial issue, it can have telling effects on a person. Hence, it needs to be taken seriously and cured to restore the confidence in a person. Causes of yellowing There are plenty of causes of yellow dentition. Some people have naturally yellow dentition and there is nothing much you can do about it in such cases.