Facial reconstruction technology is helping military dental specialists design implants and prostheses around patients’ changing anatomy, according to clinical examples from the Uniformed Services University of the Health Sciences. Three-dimensional imaging, digital modeling and printing support the work, while surgeons, prosthodontists and laboratory specialists adapt plans as treatment unfolds.
“Technology is only a tool. It doesn’t replace the team… it connects and enhances it,” said Army Lt.Col. Steven Handel, a prosthodontist and assistant program director at the Army Postgraduate Dental School. The cases show how digital methods can support eating, speaking and appearance, but the reported experiences do not establish how effective the approaches will be across larger patient populations.
Custom Implants Address Limited Jawbone
Conventional dental implants need enough jawbone to hold them securely. For a patient with severe bone loss, clinicians used computed tomography, or CT, imaging to build a three-dimensional model and design a titanium implant shaped to fit the remaining bone.
The subperiosteal implant sits on top of the bone, beneath the periosteum, and small screws secure it. Earlier versions faced poor fit, infection and failure. CT imaging, computer-aided design and manufacturing, and 3-D-printed titanium have renewed consideration of the approach.
The team planned the implant’s connection points and temporary fixed teeth before surgery. After the framework was secured to the upper jaw, however, the temporary teeth no longer fit. Clinicians determined that the framework had distorted slightly during fixation, shifting the connection points. They modified the interim prosthesis and adjusted its design after healing.
“Digital precision doesn’t automatically survive surgery,” Handel said. He said linking the abutments with a small titanium bar during fixation may help prevent this problem. The case illustrates why clinicians must assess the physical fit during treatment, even when digital planning is precise.
Facial Reconstruction Technology Supports Changing Anatomy
Digital methods also helped a patient with an opening in the palate after emergency surgery for acute invasive fungal sinusitis. Instead of taking a physical impression, the team used a high-resolution medical CT scan, separating the tongue, teeth and palate with gauze and a thin mouthguard. The resulting model guided a customized obturator, a prosthesis that seals the opening between the mouth and sinus or nasal cavity.
After fitting, the patient could eat and drink without food or liquid escaping into the nose and returned to oral nutrition and functional, understandable speech before leaving the hospital. A feeding tube had been under consideration before the device was provided.
Another case involved a 35-year-old service member with severe facial injuries associated with purpura fulminans. Because surgeries and healing changed his anatomy, the team made prosthetic treatment part of reconstruction rather than waiting for it to end. A compression mask was designed to reduce swelling, protect healing and newly grafted tissue, apply pressure in areas identified by the burn team, and support speech therapy.
The patient found the first clear mask uncomfortable in public. Handel sculpted missing facial features in clay, guided by pre-injury photographs and videos, then combined scans of the reconstruction and the patient’s remaining anatomy to design a skin-toned printed mask. As the patient healed, the team scanned him again when a mask stopped fitting. Over five years, 12 prostheses were made.
Specialists Combine Digital Planning and Craft
The work depends on a team that can move between imaging, surgery, design and fabrication. Surgeons manage facial anatomy, prosthodontists restore oral function, and laboratory technicians and anaplastologists fabricate prostheses.
The clinical reports described are largely individual cases, not large studies. They demonstrate that the methods were used in specific circumstances, but do not show how often complications occur or how well proposed solutions work across larger groups. The article’s source says additional research is needed. Clinicians are training residents in analog and digital workflows, with plans adjusted when anatomy or treatment demands require it.
