The involuntary or habitual clenching and grating of teeth, especially during sleep in very young children, is a phenomenon frequently observed by parents. This behavior, often characterized by a rhythmic rubbing of the upper and lower dental arches, can manifest as a noticeable sound or vibration. It’s distinct from intentional chewing or biting, occurring predominantly during periods of rest or diminished awareness.
The prevalence of this behavior in infancy may be linked to several developmental factors. Historically, teething has been implicated as a primary cause, with the pressure alleviating discomfort. Furthermore, the maturation of the nervous system and the adjustment of dental alignment contribute. While often benign and self-limiting, understanding the potential underlying reasons is vital for parental reassurance and preventative measures.