Incisor expansion was found to affect the greatest increase in arch perimeter per individual mm of expansion. This was comparable, however, to combined molar canine expansion, which yielded only slightly smaller amounts of arch perimeter gain per mm increase in arch width. Combined canine incisor expansion yielded greater amounts of arch perimeter increase. Molar expansion, without an accompanying increase in intercanine width, was least effective for increasing dental arch perimeter.
đang được dịch, vui lòng đợi..
