Unterkieferlage

Unterkieferlage is a German term used primarily in dentistry and orthodontics to describe the spatial position and orientation of the lower jaw, or mandible, within the craniofacial complex. The phrase literally translates to “mandibular positioning” and is employed during diagnostic assessments, treatment planning, and post‑treatment evaluation.

In aesthetic orthodontics, Unterkieferlage evaluation focuses on determining whether the mandible is retruded, protruded, or level relative to the maxilla (upper jaw). Clinicians examine lateral cephalometric radiographs, facial photographs, and occlusal records to assess sagittal, vertical, and transverse relationships. The results guide decisions about orthodontic appliances, surgical interventions, and prosthetic rehabilitation to achieve functional balance and facial harmony.

In implant dentistry, Unterkieferlage refers to the precise placement of dental implants within the mandible. Surgeons consider bone density, anatomical landmarks such as the mandibular canal, and the proximity of the mental foramen. Accurate Unterkieferlage is critical to avoid nerve injury, ensure primary stability, and achieve optimal prosthetic occlusion.

Orthopaedic surgeons also use Unterkieferlage terminology when planning mandibular osteotomies or corrective jaw surgery. Here, the goal may be to adjust the mandibular angle or to realign the mandible with respect to the cranial base, thereby resolving skeletal discrepancies or improving masticatory function.

Overall, Unterkieferlage is a multidisciplinary concept that integrates imaging, clinical examination, and surgical planning to ensure that the mandible’s position supports both functional performance and aesthetic objectives.