July 16, 2023

Protruding Chin When Smiling

Having a protruding chin when smiling can make you feel self-conscious and can even interfere with speaking clearly. The condition can also make you look older than you really are, which can be a serious blow to your self-esteem. In addition, it can be difficult to pronounce certain letters and words such as “f” and “s.” In order to pronounce these sounds correctly, your top and bottom teeth must align. An underbite can cause this alignment problem, making your teeth seem misaligned.

An underbite can be corrected in a number of ways, such as orthodontic treatment or porcelain veneers. However, these treatments don’t correct the underlying root cause of the problem. In most cases, an underbite can be caused by a missing or abnormally shaped upper jaw, lower jaw, or both. This condition is called mandibular retrognathia or a weak jawline.

This patient has iatrogenic dynamic ptosis resulting from injection of 16 cc of Artecoll (1,3 methyl methacrylate) into the chin with a high labiomental fold and rounded bottom, causing a horizontal smile that effaces the soft tissue pad of the chin downward. This type of ptosis may be treated by an inferior defatting procedure and wide undermining, or an implant to elevate the soft tissue.

A recessed or weak chin is most commonly caused by the inherited condition called mandibular retrognathia, which causes the lower jaw to be located farther back in the face than it should be. However, this can also be the result of an underlying medical issue such as acrogenital adolescent prognathism or basal cell nevus syndrome.

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