Gingival hyperplasia is the abnormal growth of excessive gum tissue. The gums may appear reddened or inflamed and may become so enlarged that it is difficult to visualize the teeth. In some cases, gingival hyperplasia may be localized to specific areas and its appearance may mimic the appearance of a mass or tumor. Gingival hyperplasia is most commonly treated with the surgical removal of the excessive proliferative tissue, referred to as gingivoplasty. Although it results in a significant improvement in clinical signs, gingivoplasty does not typically cure the condition.