Abstract
Recently, various types of the Micro-implant Assisted RPE (MARPE) were introduced
to obtain greater skeletal expansion and to minimize dental effects. In the present
study, we evaluated skeletal and dental effects immediately after the completion of
expansion using three different types of expanders— a traditional tooth-anchored maxillary
expander (TAME) and two different types of MARPE, bone-anchored maxillary expander
(BAME) and tooth-bone-anchored expander (MSE) using CBCT in adolescents. Overall,
the MSE group showed much greater skeletal changes than the TAME and BAME groups,
especially, at the nasal floor, maxillary base, and palatal suture. About 72–78% of
suture opening was at PNS, which indicates slightly more opening anteriorly than posteriorly;
however, it was relatively parallel in nature than anticipated. In all three groups,
the greatest transverse changes with expansion occurred at the molar crowns and the
2nd greatest changes at the palatal suture opening at ANS. It is suggested that MSE
can be a great alternative method in correcting maxillary skeletal transverse deficiency.
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Published online: February 11, 2019
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