The upper airway volume effects produced by Hyrax, Hybrid-Hyrax, and Keles keyless expanders: a single-centre randomized controlled trial

Upper midline deviation: modified Hyrax expander.

BACKGROUND The Hyrax rapid palatal expander is useful for patients in mixed dentition with premature exfoliation of some deciduous teeth and maxillary hypoplasia. This appliance, which is provided of a vestibular arm for correcting maxillary asymmetric transverse discrepancies, represents an interceptive treatment able to reduce the duration of the orthodontic therapy with fixed appliances. C...

Early Class III treatment with a hybrid hyrax-mentoplate combination.

Maxillary protraction using a hybrid hyrax-facemask combination

BACKGROUND The aim of this in study was the evaluation of treatment outcomes after using a hybrid hyrax-facemask combination in growing class III patients. METHODS Treatment of 16 children (mean age 9.5±1.3 years) was investigated clinically and by means of pre- and post-treatment cephalograms. Changes in sagittal and vertical, and dental and skeletal values were evaluated and tested for stat...

Procavia capensis – Rock Hyrax

Taxonomic notes: While as many as 17 subspecies have been described across its range by Hoeck and Bloomer (2013), only one (P. c. capensis), is recognised from the assessment region (Meester et al. 1986). However, Prinsloo and Robinson (1992) discovered a genetic break between the north-western and south-central populations in South Africa, indicating a possible species complex. Similarly, Viss...

بررسی اثر دستگاه‌های اکسپاندر سریع Haas و Hyrax بررسی ابعاد حفرات بینی

Background and Aim: In treatment of posterior crossbite awareness of the effects of Haas and Hyrax rapid maxillary expanders (RME) on nasal cavity will help the clinician to select the better appliance. This study was carried out to compare the effects of Haas and Hyrax expanders on the nasal cavity of patients treated for posterior crossbite. Materials and Methods: A clinical trial study was ...