Soft-Tissue Pogonion
Pronunciation: POG-oh-nee-on
The most anterior point of the soft-tissue chin, used in soft-tissue cephalometric analyses to evaluate chin projection and facial balance.
Full Definition
Soft-tissue pogonion (Pog') is the cephalometric landmark representing the most prominent anterior point of the soft-tissue chin contour as seen on a lateral cephalogram. It is analogous to the skeletal landmark Pogonion (Pog) but reflects the overlying soft tissue rather than underlying bone. It is used extensively in soft-tissue analyses—such as the Holdaway and Legan-Burstone analyses—to evaluate facial harmony, lip-chin relationships, and to plan surgical and orthodontic outcomes. Editors must consistently differentiate soft-tissue landmarks (denoted with a prime symbol, e.g., Pog') from their hard-tissue counterparts. Confusion between skeletal Pogonion and soft-tissue Pogonion is a frequent editorial error in cephalometric manuscripts.
Usage
Usage note: Denote with a prime symbol (Pog') in cephalometric notation to distinguish from skeletal Pogonion (Pog). Do not use interchangeably with skeletal Pogonion.
In Context
- "Soft-tissue pogonion was retruded relative to the E-line, indicating insufficient chin projection." — Soft-tissue cephalometric analysis
- "The manuscript used 'Pogonion' and 'soft-tissue Pogonion' interchangeably; the editor inserted prime notation (Pog') throughout to resolve the ambiguity." — Cephalometric manuscript editing