Comparison of transverse changes during maxillary expansion with 4-point bone-borne and tooth-borne maxillary expanders

Evaluation of miniscrew-supported rapid maxillary expansion in adolescents: A prospective randomized clinical trial

“…The boneborne RME group in the current study produced more skeletal separation, following suit to previously introduced miniscrew-supported RME appliances facilitating the direct transfer of expansion forces to the palate. 14,15,20,21 This is an ideal outcome because a true increase in transverse width of the basal bone in cases with maxillary transverse deficiency is essential to the ideal finishing of the case. Heavy stainless-steel wires used in the final stages of comprehensive orthodontic treatment would introduce negative torque to the posterior teeth, restoring the ideal buccolingual inclinations of the teeth and possibly decreasing the amount of expansion previously gained by tipping of the posterior teeth buccally.…”

“…The variable nature of skeletal expansion and the extent of undesired dental changes that occur following the use of conventional appliances might be the key factors to rationalize the use of miniscrewsupported maxillary expansion in adolescents. Although some studies [13][14][15][16] have been previously published, prospective clinical studies using identical samples are warranted to justify the common use of bone-borne maxillary expansion in the adolescent population.…”

Mini-implant assisted rapid palatal expansion: New perspectives

“…Some studies recommend activating the device only a few days after the installation of the screws 18 , whereas others recommend waiting 4-6 weeks after installing the screws allowing for a more organized bone matrix around the mini-implants (lamellar structure) 18 . As for the activation of the device, we found different methods in the literature, but the most used seems to be activating the disjunctor twice a day (once in the morning, once in the evening), i.e., an expansion of 0.5 mm/day like a conventional disjunctor 16,23,47,74 . Wilmes recommends activating twice at 90°, i.e., an activation of 0.8 mm/day 18 .…”

Various Contemporary Intraoral Anchorage Mechanics Supported with Temporary Anchorage Devices

“…The Hyrax appliance resulted in a larger expansion in the premolar region than the Hybrid Hyrax (27). Mosleh et al (28) reported that basal bone expansion was achieved in both tooth-borne and bone-borne maxillary expanders. The increase in maxillary width was greater in the bone-borne group, and the dental expansion was higher in the tooth-borne group.…”

“…They are as follows: Beneslider (13,14), Miniscrew-supported EZ slider (15), Implant-supported Distal Jet (16), Mini-Implant-Borne Pendulum B Appliance (17,18), Noncompliance-supported Maxillary Molar Distalization Appliance (19,20), Temporary Skeletal Anchorage Device-Supported RME (TSADRME) (21,22), Mini-Implant-Supported Maxillary Expansion (MISME) (23), Implant-Supported RME (23)(24)(25)(26), Hybrid Hyrax (27)(28)(29)(30), Frog Appliance (31), Palatally Anchored Mesialslider (29,30), Mousetrap Appliance (31), Lever Arm, and Mini-implant System (32,33).…”