Final answer:
The arch circumference increases slightly in the maxilla from mixed to permanent dentition.
Step-by-step explanation:
The statement that the arch circumference increases slightly in the maxilla from mixed to permanent dentition is true.
In humans, the maxilla is the upper jawbone that contains the teeth. During the transition from primary (deciduous) teeth to permanent teeth, there is a slight increase in the size of the arch circumference in the maxilla.
This increase in arch circumference is due to the growth and development of the permanent teeth, which are larger in size compared to the primary teeth.