<human>: I feel a sort of like a narrow canyon or crack inside my mouth in the cheek part. What is this? I googled and linea alba showed up. It says that linea alba feels like a narrow ridge but what I feel is curved inward not outwards like a ridge. Both sides of my cheeks(inside the mouth) has these line. What is this??
<bot>: Hello and welcome. Yes the curved lines or ridges that you feel and see within your mouth along the cheek is line Alba. It is a kind of ridge between upper and lower jaw. In some patients, it is quite obvious while in others it is mild and less felt. Please do not worry, it is a normal phenomenon and present in every individual. It should bother you only if you bite on it accidentally, else not. Hope it helps. Thanks. Take care.