A corrected tiger tooth mouth does not collapse, it just returns to its normal position.
Tiger teeth, i.e., cuspids, erupt relatively late in the oral cavity. For some patients with insufficient jawbone clearance, there is usually not enough clearance for the cuspids to erupt and they have to erupt buccally, hence the appearance of a protruding corner of the mouth, which is abnormal when evaluated from the perspective of facial standards.
After orthodontic treatment, the tiger teeth can be inwardly retracted so that they are located in the normal position of the jawbone and in normal contact with the anterior and posterior teeth. At this time, the protruding lips will be inwardly retracted with the inwardly retracted cusp teeth, and it cannot be said that the mouth collapses, but rather, it returns to the normal position, and the cusp teeth’s role of propping up the corners of the mouth is still in place.
It should be suggested that the perception of aesthetics varies from person to person, and it is recommended to fully communicate with the practitioner before orthodontic treatment.