Certainly, BT treatments have been amplified in popularity over the last two decades, it gets. ting much more attention in dentistry and frustrated many dentists, where they use BT injection: for dental esthetic and therapeutic purposes. It was proven that BT injections can improve cosmetics, reduce pain, and relax and retrain muscles which in turn enhance the dental treatment plans.
The applications of BT injections have been classified into:
Although, displaying a small amount of gingiva is aesthetically acceptable and gives a youthful appearance, a smile with more than 2 mm exposed gingiva is known to be a gummy smile (GS). It is one of the most common variations among the people, with a predominance of females than males. The etiological factors of GS can extensively vary, including the altered passive eruption of teeth, dentoalveolar extrusion, vertical maxillary excess, short or hyperactive upper lip muscles (levator labii superiors, levator labii superioris plaque basis, levator angel oris, depressor septi, and the zygomaticus muscles), or combinations of one or more of then. Accordingly, proper diagnosis of the etiology will lead to the proper treatise. In case of altered passive eruption, crown lengthening is the choice treatment, whether with or without bone reduction. Also, surgical lip repositioning techniques were reported to give satisfactory results. In addition, some cases need orthognathic surgery or orthodontia appliances, especially if the cause is skeletal in origin. However, in cases of hyperactive/hyper-functional elevator labial muscles, BT injections have progressed to be popular in the correction of the gummy smile (GS) compared to other surgical procedures.
