A chart depicting the chronological development of teeth comprising timeline bars with emerged teeth in a jaw on the x axis and chronological age on the y axis wherein the order of the teeth along the x axis is the natural order of the teeth in the jaw. The timeline bars commence with the emergence of a tooth. A sliding bar with a window or frame may be moved along the y axis to show the development of the teeth for a given age. The chart shows both deciduous and permanent tooth development.
