Cephalometric evaluation of soft tissue effects induced by a class II corrector in different facial patterns
| dc.contributor.author | Ward, Robert | |
| dc.contributor.examiningcommittee | Drummond, Robert (Preventive Dental Science) Birek, Catalena (Oral Biology) | en_US |
| dc.contributor.supervisor | Wiltshire, William (Preventive Dental Science) | en_US |
| dc.date.accessioned | 2015-07-06T14:32:39Z | |
| dc.date.available | 2015-07-06T14:32:39Z | |
| dc.date.issued | 2015-07-06 | |
| dc.degree.discipline | Preventive Dental Science | en_US |
| dc.degree.level | Master of Science (M.Sc.) | en_US |
| dc.description.abstract | Objective: To determine the magnitude of soft tissue changes in subjects with different facial patterns following Class II correction. Materials/Methods: A retrospective sample of 80 subjects exhibiting Class II malocclusions was used. Subjects were categorized into facial types according to pre-treatment values of MPA and Y-axis, which yielded 20 brachycephalic, 40 mesocephalic, and 20 dolichocephalic subjects. Data collection included digital analysis on the pre-treatment (T0) and post-treatment (T1) cephalometric radiographs. A paired t-test statistic was used to investigate the differences between the three facial groups at T0 and T1. Conclusions: There are differences in the soft tissue effects observed in patients treated with the XbowTM appliance which are related to the pre-existing facial pattern (p<0.05): The mesocephalic group showed increased retrusion of the upper lip to E-Plane compared with brachycephalic, and dolichocephalic groups. The dolichocephalic group showed significantly more flattening of the mentolabial fold compared to the mesocephalic group. | en_US |
| dc.description.note | October 2015 | en_US |
| dc.identifier.uri | http://hdl.handle.net/1993/30607 | |
| dc.language.iso | eng | en_US |
| dc.rights | open access | en_US |
| dc.subject | Cephalometric | en_US |
| dc.subject | Orthodontics | en_US |
| dc.title | Cephalometric evaluation of soft tissue effects induced by a class II corrector in different facial patterns | en_US |
| dc.type | master thesis | en_US |