The first attempt at stimulating growth of the mandible in therapy of distal bite Class II/1 was initiated by Kingsley in 1877. The method described as “jumping the bite” is still applied today according to the principle of functional bimaxillary appliances such as for example activator, bionator, function regulator (1-3) and others, whereby the mandible is brought into the anterior position by...

BACKGROUND The objective of the present study was to evaluate and compare temporomandibular joint changes especially disk-condyle-fossa relationship following functional treatment of skeletal class II division 1 malocclusion using Twin Block and Bionator appliances. METHODS The total sample consisted of 30 subjects (13 males and 17 females) with class II division 1 malocclusion having mandibu...

Introduction/Objective. Class III malocclusion is caused by changes in skeletal and/or dentoalveolar structures with a typical mesial relationship of posterior teeth. The ?Y? appliance and the screw according to Bertoni can be used treating maxillary retrognathism period mixed dentition. aim study was determine compare on patients treated Y Bertoni. Methods. Forty were included this study. samp...

A 12-year-old female patient presented with proclined upper anteriors on a class II skeletal base, a retrognathic mandible and high maxillary- mandibular plane angle. Lower first molars were mesially tipped and lower second premolars were impacted. Treatment plan included uprighting and distalising the lower molars followed by growth modulation with Jasper Jumper to correct the mandibular retro...

The skeletal Class III malocclusion though comparatively small in incidence is one of the most difficult malocclusion to treat. It can be due to maxillary retrognathism, mandibular prognathism or both. Reverse pull Headgear or Face Mask have been used for early maxillary protraction. Face mask therapy has been shown to improve the skeletal relationship. The article presents a case report of the...

In this study we evaluated whether single nucleotide polymorphisms (SNPs) in the genes encoding PTH, VDR, CYP24A1, and CYP27B1 were associated with mandibular retrognathism (MR). Samples from biologically-unrelated Brazilian patients receiving orthodontic treatment included study. Pre-orthodontic lateral cephalograms used to determine phenotype. Patients a retrognathic mandible selected as case...