A clicking sound in the jaw joint when opening and closing the mouth is often associated with the temporomandibular joint (TMJ), which connects the lower jaw (mandible) to the skull. The clicking can be due to several reasons

Retained baby teeth, also known as retained primary teeth or over-retained primary teeth, refer to a dental condition where one or more primary (baby) teeth do not naturally fall out as they should when the permanent teeth are ready to erupt.

A clicking sound in the jaw joint when opening and closing the mouth is often associated with the temporomandibular joint (TMJ), which connects the lower jaw (mandible) to the skull. The clicking can be due to several reasons