Mouthline is a term primarily used in the field of dentistry to refer to the outline or contour of the lips when they are closed and at rest. It denotes the visual appearance and alignment of the lips in relation to the teeth and the rest of the face. The mouthline is an important aspect of facial aesthetics, as it contributes significantly to a person's overall smile and appearance.
In dental terminology, the mouthline is often used to assess the harmony and symmetry of the lips with the teeth, gums, and surrounding facial features. It is considered an essential factor in determining dental treatment plans, particularly for procedures involving smile enhancement or correction.
A well-defined and balanced mouthline typically exhibits an even alignment between the upper and lower lips when the mouth is closed. It is characterized by a gentle and natural curve that complements the shape and size of the teeth, ensuring a harmonious integration between the lips and the rest of the face. Deviations from an ideal mouthline, such as asymmetries, protrusions, or retrusions, may indicate dental or skeletal abnormalities that could be addressed through various dental interventions, including orthodontics, cosmetic dentistry, or oral surgery.
Overall, the mouthline serves as an important aesthetic reference point in dentistry, aiding in the assessment, diagnosis, and treatment planning for individuals seeking dental procedures to improve their smile and facial appearance.
