Mouth opening surgery, also known as maxillofacial or oral surgery, is a procedure performed to address issues related to restricted mouth opening, also known as trismus or lockjaw. This condition can be caused by various factors, including trauma, infection, temporomandibular joint (TMJ) disorders, or scarring from previous surgery or radiation therapy. Here's an overview of the surgical options for treating restricted mouth opening: Release of Scar Tissue: If trismus is caused by scar tissue formation around the jaw joint or muscles, surgery may be performed to release the scar tissue and improve mouth opening. This may involve removing scar tissue and reconstructing the affected area. Arthroscopic Surgery: For trismus caused by TMJ disorders, arthroscopic surgery may be performed to address underlying joint problems. This minimally invasive procedure involves inserting a small camera and surgical instruments through tiny incisions to visualize and treat the TMJ. Distractor Placement: In cases of severe trismus where the jaw muscles are permanently contracted, distraction osteogenesis may be performed. This involves surgically placing distractors, which are devices that gradually stretch the jaw bones apart over time, allowing for increased mouth opening. Soft Tissue Release: Surgery may be performed to release tight or contracted muscles in the jaw, cheeks, or neck that are contributing to restricted mouth opening. This may involve cutting or lengthening the affected muscles to improve mobility. Retrognathia Correction: In some cases, restricted mouth opening may be caused by a condition called retrognathia, where the lower jaw is set back further than normal. Orthognathic surgery may be performed to reposition the jaw forward, improving mouth opening and bite alignment. Reconstruction Surgery: If trismus is caused by extensive tissue loss or damage due to trauma or surgery, reconstructive surgery may be necessary to rebuild the affected area and restore normal mouth function. It's important to note that the specific surgical approach will depend on the underlying cause and severity of the restricted mouth opening. The procedure may be performed by an oral and maxillofacial surgeon, a plastic surgeon, or a specialized craniofacial surgeon. Rehabilitation and physical therapy may also be recommended following surgery to optimize mouth opening and restore function. As with any surgical procedure, there are potential risks and complications associated with mouth opening surgery, so it's essential to discuss these with your healthcare provider and carefully weigh the benefits and risks before proceeding.