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Published on: October 27, 2023
A prototype for an economical vertical microstomia orthosis
Shari Davis1, Jarita G Thompson, Janet Clark
1Department of Physical Therapy, John H. Stroger, Jr. Hospital of Cook County, Chicago, Illinois 60612, USA.
Summary
Thermal burns can cause mouth scarring and microstomia. A new vertical mouth stretching orthosis offers a comfortable, economical solution for improving mouth mobility and range of motion in patients.
Area of Science:
- Plastic Surgery
- Rehabilitation Medicine
- Biomedical Engineering
Background:
- Scarring and contractures are common complications following thermal injury, particularly affecting the oral area.
- Vertical microstomia, a narrowing of the mouth opening, can significantly impair function and quality of life.
Observation:
- A novel vertical mouth stretching orthosis was designed using thermoplastic splinting material and a long thread screw.
- This custom-fit device is suitable for both pediatric and adult patients requiring rehabilitation for circumferential mouth burns.
Findings:
- The orthotic device effectively targets the vertical diameter, enhancing mouth mobility and range of motion.
- Patients reported positive feedback regarding the comfort and ease of use of the new orthosis.
Implications:
- This economical and comfortable device presents a viable alternative to existing treatments for vertical microstomia.
- The custom-fit nature of the orthosis allows for personalized rehabilitation of oral function after severe burns.

