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Treatment of Angle Class II/1 Malocclusion


Author: Buşmachiu Ion
Degree:doctor of medicine
Speciality: 14.00.21 - Stomatology
Year:2009
Scientific adviser: Pavel Godoroja (decedat)
doctor habilitat, professor, State University of Medicine and Pharmacy "Nicolae Testemitanu"
Institution:
Scientific council:

Status

The thesis was presented on the 10 December, 2008
Approved by NCAA on the 26 February, 2009

Abstract

Adobe PDF document0.31 Mb / in romanian

Keywords

Angle’s Class II Division I Malocclusion,patients without malocclusion,biometric indices,cephalometric analysis, space analysis,author’s treatment method, Tweed –Merrifield method, method with extraction of premolars 14,24,35,45,distalzation of posterior teeth,orthodontic treatment

Summary

The purpose of the study was to effectively treat Angle’s Class II division I malocclusion by orthodontic treatment and using a new method of treatment involving distalization of the posterior segment of the dental arch. For this study, clinic, biometric and cephalometric parameters were used in 81 patients with Angle’s Class II Division I in the age of 10-24 years and 58 patients without malocclusion in the age of 11-17 years.

The patients including 57 females (70.37%) and 24 males (29.63%) were treated with different methods. The method proposed by the author was compared with TWEED-MERRIFELD’s (patients treated 22{27.16%} in the age of 10-24 years) and with method of extraction of premolars (patients treated 24 (29.63%) in the age of 10-24 years).

The following investigations were used in the study: biometric parameter analysis in patients with Class II division I malocclusion and without the malocclusion, biometric indices, pretreatment and posttreatment cephlometric analysis, total space analysis.

The biggest deficit of space in the posterior segment of the dental arch indicates towards an active intervention to create space by extraction of the third molar , the said method was used by the author in 24 (29.74%) patients.

A new method of distalization was implemented which was used for the correction of Class II Division I malocclusion. The said method was used in 35 patients (43.21%) with Class Ii division I malocclusion which demonstrated to be highly efficient, stable and maintained the facial harmony.