Temporomandibular Joint Disorder, facial pain and jaw ache brought on by bruxism (grinding of teth) can be sometimes difficult to manage with night guard splint alone. Often patients find it difficult to wear the splint every night. Extensive research has been done on the use of botox injections into the musculature of the head and neck in order to treat this condition.
Treatment of gummy smiles can be sometimes achieved by targeting the hyperactive muscles of the upper lip. Placement of muscle relaxant (example botox) in the upper lip muscle can give excellent results shown in the photos.
The dentist will need to assess the individual case before recommending such treatment.