Effects of the sander bite jumping appliance in patients with class ii malocclusion before growth peak.
J Biol Regul Homeost Agents
; 34(6 Suppl. 2): 1-7, 2020.
Article
em En
| MEDLINE
| ID: mdl-33541060
ABSTRACT
Sander bite jumping appliance (BJA) is a functional appliance used to correct Class II malocclusion in growing patients. The aim of this study was to identify the dento-skeletal effects in patients treated with BJA before growth peak and to compare these effects with the ones obtained in a similar group treated with the Andresen activator (AA). Twenty subjects with class II relationship of the skeletal bases and cervical vertebrae maturation stage 1 or 2 were enrolled in the study and treated with BJA. This group were compared to 14 subjects treated with AA. Cephalometric analyses were carried out using landmarks derived from the analyses of Pancherz, Ricketts, Tweed and Steiner. After treatment with BJA Pg/OLp increase was 7.40±3.81 mm (P<0.001); Pg/OLp+Co/OLp significantly heightened from T0 to T1 (T0 82.20±4.65 mm vs T1 89.62±4.27, P<0.001). Overjet (is/OLp - ii/OLp) significantly decreased from T0 to T1 (T0 7.40±2.31 mm vs T1 3.05±1.34 mm, P<0.001). Molar relationship improved passing from 1.46±1.68 mm at T0 to -3.56±2.04 mm at T1 (P<0.001). No statistically significant differences were found between BJA and AA groups at T0 and T1. BJA treatment determined a Class II malocclusion correction in all patients. The correction of molar relationship was mainly due to the increase in mandibular length; the correction of the overjet was due to the increase in mandibular length, to the slight pro-inclination of the lower incisors and the mild retro-inclination of the upper incisors. No significant differences were found in effectiveness between BJA and AA.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Má Oclusão Classe II de Angle
Limite:
Humans
Idioma:
En
Revista:
J Biol Regul Homeost Agents
Assunto da revista:
BIOLOGIA
/
BIOQUIMICA
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Itália