Browsing by Author "Julyan, Johan Christian"
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Item Assessing orthodontic treatment outcome of patients treated by orthodontic registrars - using the Peer Assessment Rating index(University of the Western Cape, 2025) Julyan, Johan Christian; Bellardie, HaydnBackground: Orthodontic treatment aims to improve occlusion and aesthetics in patients’ dentition. Assessing the degree of improvement is important to establish the standard of care provided by an individual orthodontist or a tertiary care institution. This study aimed to assess the orthodontic treatment outcomes of patients designated for use in final examinations by registrars in the postgraduate orthodontics program at the University of the Western Cape (UWC). The assessment was performed using the Peer Assessment Rating (PAR) index. Additional outcome measures included extraction, non-extraction, orthodontic prescription, impactions, Angle classification, and duration of treatment. Orthodontic study models and treatment records of patients who met the inclusion criteria were included. The final sample consisted of seventy-five patients with a mean age of 16 years and 6 months and a sex distribution of 47 (63%) females and 28 (37%) males. The PAR index was used to assess the pre- (T0) and post-treatment (T1) orthodontic study models. Additional outcome measures were assessed using the treatment records of the study sample.Item Soft tissue profile changes in patients treated with non-extraction versus second premolar extraction protocols - using the Damon system(University of the Western Cape, 2018) Julyan, Johan Christian; Harris, AngelaOrthodontic treatment has the ability to improve the aesthetics and the function of patients. In order to create space, orthodontic treatment often requires removal of teeth. The most common teeth removed for orthodontic treatment are the premolars. It has become popular to remove second premolars in certain cases where the soft tissue profile should not be altered. The Damon self-ligating orthodontic system is renowned for not requiring dental extractions in the majority of cases. The effect of extractions on the soft tissue profile of patients, in conjunction with using the Damon system, has therefore not been researched. It is important to understand the effect that orthodontic treatment and extractions can have on the soft tissue profile of patients. This effect can accurately be determined by making use of the soft tissue cephalometric analysis, developed by Dr Reed A. Holdaway in 1983.