This article is from the Piercing FAQ, by Anne Greenblatt with numerous contributions by others.
1 to 2 weeks
This is a piercing of the upper or lower lip frenulums. Frenulum
piercings are prone to rejection. The frenulum is usually thin and
easily torn. Playing with the jewelry frequently can cause or hasten
rejection.
Over the long term the jewelry can cause erosion of the tooth enamel
and the gums.
Initial jewelry: Rings in 16 to 14 gauge and 1/4" to 3/8" in diameter.
 
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