Teeth are not completely fused to the jaw and possess a slight natural flexibility (physiological mobility) which is perfectly normal, thanks to the periodontal ligament that acts as a shock absorber. However, if this mobility becomes significant and clearly visible, it is no longer normal and requires consultation with a professional.

noli's read

The fact that our teeth have natural flexibility is an indisputable scientific reality. According to established clinical consensus (such as the Miller classification), a tooth in healthy anchoring tissue naturally exhibits a minute mobility of approximately 0.2 millimeters. This micro-movement is made possible by the periodontal ligament, a fibrous tissue that serves as a natural shock absorber during chewing to distribute pressure forces. Summaries of biomechanical studies published in reference journals (such as the narrative review in PMC) confirm that this natural spring is essential for oral comfort and jaw protection. However, if the sensation of oscillation becomes visible or bothersome in daily life, it indicates that the tooth's anchorage is weakened or that it is undergoing excessive tension, for example in cases of nocturnal grinding. The creator is therefore entirely correct to offer reassurance regarding this normal flexibility while advising a consultation if the movement becomes perceptible to the naked eye.

the sources

No named source held this one up — that absence is part of the verdict.