SMES

SMES-SKELETAL MAXILLARY EXPANDER WITH SCREW

Mini-implant Assisted Rapid Maxillary Expansion (MARME) device is used to correct transverse maxillary deficiency and arch-length discrepancy in an adult. The Skeletal Maxillary Expander with Screw (SMES) is a MARME device, specially designed to deliver the expansion force to 4 mini-implants inserted deeply, engaging both layers of the cortical bone (palatal and nasal layers) for bicortical anchorage; the first molars are used to stabilize the position of the jackscrew during expansion rather than anchorage. SMES protocol is a non-surgical treatment alternative in adult maxillary transverse deficiency with excellent post-retention stability and minimum buccal tooth tipping effect.-This article by courtesy of Dr. HONG-PO CHANG

---

First generation SMES #9	First generation SMES #11	Second generation SMES #9	Second generation SMES #11
mm/round	0.6mm	0.6mm	0.6mm	0.6mm
armsØ	1.5mm	1.5mm	0.9mm	0.9mm
body	14mm	16mm	9mm	11mm
max expansion lenght	4.2mm	6mm	7mm	9mm
key

one turn = 1/3 round