Mandibular growth and dentoalveolar development in the treatment of Class II, division 1, malocclusion using Balters Bionator according to the skeletal maturation

Abstract

OBJECTIVE: The purpose of the study was to evaluate the influence of the skeletal maturation in the mandibular and dentoalveolar growth and development during the Class II, division 1, malocclusion correction with Balters bionator. METHODS: Three groups of children with Class II, division 1, malocclusion were evaluated. Two of them were treated for one year with the bionator of Balters appliance in different skeletal ages (Group 1: 6 children, 7 to 8 years old and Group 2: 10 children, 9 to 10 years old) and the other one was followed without treatment (Control Group: 7 children, 8 to 9 years old). Lateral 45 degree cephalometric radiographs were used for the evaluation of the mandibular growth and dentoalveolar development. Tantalum metallic implants were used as fixed and stable references for radiograph superimposition and data acquisition. Student's t test was used in the statistical analysis of the displacement of the points in the condyle, ramus, mandibular base and dental points. Analysis of variance one-fixed criteria was used to evaluate group differences (95% of level of significance). RESULTS: The intragroup evaluation showed that all groups present significant skeletal growth for all points analyzed (1.2 to 3.7 mm), but in an intergroup comparison, the increment of the mandibular growth in the condyle, ramus and mandibular base were not statically different. For the dentoalveolar modifications, the less mature children showed greater labial inclination of the lower incisors (1.86 mm) and the most mature children showed greater first permanent molar extrusion (4.8 mm).

Effects of three types of functional appliances in class II malocclusions treatment - sagittal and vertical changes

“…However, none of the randomized clinical studies established clinically significant growth as a result of functional appliance treatment. This is in line with the finding of dos Santos-Pinto et al [16], who compared bionator treated patients with untreated controls and found significant growth in both groups, regardless of whether they were treated or not. On the other hand, Moreira Melo et al [12] found an increase in total mandibular growth after bionator treatment, which was confirmed by Almeida et al [13], who reported significant increase in the length of mandibular corpus and total mandibular length.…”

Unusual Case of Pyoderma Gangrenosum and Bilateral Ear Changes Secondary to the Use of Cocaine with Levamisole in a Patient with Systemic Lupus Erythematodes

“…Additionally, the most pathognomonic lesions of cocaine-levamisole syndrome are those on the ears which our patient had. This is why we believe when we followed the clinical, laboratory, histological and treatment picture that the cause of the PG and ear changes was the cocaine-levamisole [5][6][7][8]. The patient did not fulfil the criteria for relapsing polychondritis [9].…”

Incidence of Small Bounded Edentulous Spaces in Children and Adolescents Living in Lviv

“…This is principally caused by the active development of dentofacial complex [4]. The loss of permanent teeth in children, especially first molars, has been proven to lead inevitably to deformity of dentitions and changes in musculo-articular complex at the age of 18-20 [9,10,12]. Despite a large number of different modern methods of treatment and prevention of major dental diseases, the incidence of dentitions deformity caused by teeth extraction or their considerable destruction is significant [2,3,5] and the emergence of morphological and functional changes in dentofacial complex due to premature loss of permanent teeth is the most severe at a young age [7,11].…”