Overview
Third-degree burns of the floor of the mouth represent a severe and complex injury due to the intricate anatomy and critical functions of this region. The floor of the mouth contains vital structures such as the submandibular gland, sublingual gland, lingual nerve, hypoglossal nerve, and the submental and mental arteries. These injuries often result from thermal, chemical, or electrical exposures and can lead to significant functional and aesthetic impairments, including speech difficulties, swallowing problems, and potential airway compromise. Prompt and meticulous management is crucial to minimize complications and optimize patient outcomes. Recent advancements in tissue engineering, such as the use of StrataGraft, have shown promising results in reducing the need for autografting and improving wound healing outcomes.
Diagnosis
Diagnosing a third-degree burn of the floor of the mouth involves a thorough clinical assessment and imaging when necessary. The hallmark signs include full-thickness tissue damage with absence of sensation, charring of the skin, and exposure of underlying structures. Clinicians should carefully evaluate for signs of airway involvement, which can be life-threatening. Additionally, assessing the integrity of the salivary glands and cranial nerves (particularly the hypoglossal nerve) is essential due to their critical roles in oral function and sensation. Imaging modalities such as CT scans or MRI may be employed to better delineate the extent of the burn and assess for any deeper tissue damage or complications like abscess formation. Early and accurate diagnosis is pivotal for initiating appropriate and timely treatment strategies.
Management
Initial Management
The initial management of a third-degree burn of the floor of the mouth focuses on stabilizing the patient and preventing further complications. This includes ensuring airway patency, often necessitating intubation or advanced airway management techniques due to the risk of edema and potential airway obstruction. Fluid resuscitation with isotonic saline is critical to maintain hemodynamic stability. Pain management should be aggressive, utilizing multimodal analgesia to address the intense pain associated with such injuries. Wound debridement may be required to remove necrotic tissue, though this must be carefully balanced to avoid exacerbating edema and compromising the airway.
Advanced Wound Care
Traditional approaches to treating extensive third-degree burns often involve autografting to promote healing and minimize scarring. However, recent advancements have introduced innovative biomaterials like StrataGraft, which has demonstrated significant benefits in clinical trials. In a phase 3 trial, StrataGraft treatment resulted in a 96% reduction in the need for autografting compared to conventional autograft sites, with durable wound closure achieved in 92% of patients without requiring additional autografting by 3 months post-treatment [PMID:34099322]. This biomaterial provides a scaffold that supports tissue regeneration while reducing the risks associated with autograft harvesting, such as donor site morbidity and potential immunological complications. Clinicians should consider StrataGraft as a viable alternative, especially in extensive burn injuries where minimizing secondary procedures is crucial.
Postoperative Care
Postoperative care for patients with third-degree burns of the floor of the mouth involves meticulous monitoring and supportive therapies. Regular wound assessments are essential to detect signs of infection, delayed healing, or complications such as contractures. Nutritional support is critical, as severe burns can lead to significant metabolic demands and malnutrition. Enteral feeding may be necessary to ensure adequate caloric and protein intake. Physical therapy, particularly speech and swallowing therapy, should be initiated early to mitigate functional impairments. Psychological support is also vital, as patients often face substantial emotional challenges due to the visible and functional consequences of their injuries.
Complications
Common Complications
Patients with third-degree burns of the floor of the mouth are at risk for a variety of complications that can significantly impact recovery and long-term outcomes. Airway compromise remains a critical concern, particularly in the immediate post-injury period due to edema and potential scarring. Swallowing difficulties and speech impediments are frequent, stemming from damage to the intrinsic muscles of the tongue and the surrounding structures. Additionally, infections, both superficial and deep, pose a significant threat, necessitating vigilant monitoring and prompt antibiotic therapy when indicated.
Adverse Events Related to StrataGraft
While StrataGraft offers promising benefits in wound healing, it is not without potential adverse effects. The most frequently reported adverse event associated with StrataGraft treatment is pruritus, occurring in 15% of patients [PMID:34099322]. Pruritus can significantly affect patient comfort and quality of life, necessitating symptomatic management with antihistamines or other antipruritic agents as needed. Other less common complications may include local inflammation or delayed healing, though these are less frequently documented in clinical trials. Close monitoring and proactive management of these side effects are essential to ensure optimal patient outcomes and adherence to treatment protocols.
Key Recommendations
These recommendations aim to guide clinicians in providing comprehensive and effective care for patients suffering from third-degree burns of the floor of the mouth, leveraging both traditional and emerging therapeutic approaches.
References
1 Gibson ALF, Holmes JH, Shupp JW, Smith D, Joe V, Carson J et al.. A phase 3, open-label, controlled, randomized, multicenter trial evaluating the efficacy and safety of StrataGraft® construct in patients with deep partial-thickness thermal burns. Burns : journal of the International Society for Burn Injuries 2021. link
1 papers cited of 2 indexed.