The effect of vertical growth pattern on mandibular incisor proclination in non-extraction Invisalign Teen® cases.
| dc.contributor.author | Hennessey, Declan | |
| dc.contributor.examiningcommittee | Schroth, Robert (Preventive Dental Science) Cholakis, Anastasia (Dental Diagnostic and Surgical Sciences) | en_US |
| dc.contributor.guestmembers | Lekic, Milos (Children's Dental World) | en_US |
| dc.contributor.supervisor | Drummond, Robert (Preventive Dental Science) | en_US |
| dc.date.accessioned | 2020-09-22T23:38:21Z | |
| dc.date.available | 2020-09-22T23:38:21Z | |
| dc.date.copyright | 2020-06-17 | |
| dc.date.issued | 2020 | en_US |
| dc.date.submitted | 2020-06-17T18:52:02Z | en_US |
| dc.degree.discipline | Preventive Dental Science | en_US |
| dc.degree.level | Master of Science (M.Sc.) | en_US |
| dc.description.abstract | Objectives: To investigate the effect of vertical growth pattern on the position of the mandibular incisors for non-extraction Invisalign teen® patients, with or without interproximal reduction. Subjects and methods: A retrospective chart review consisting of 40 (26 girls;14 boys) Caucasian adoloscent patients in the permanent dentition (12- 18) was undertaken. Subjects were categorized into 4 groups based on the value of the pre-treatment lower dentition crowding and value of patients mandibular plane angle (MPA). Crowding was assessed as mild (0-3.9mm) or moderate (4-5.9mm) and MPA as normal growth (30-37°) or vertical growth (>37°). The sample provided 10 normal growth/mild crowding, 10 vertical growth/mild crowding, 10 normal growth/moderate crowding and 10 vertical growth/moderate crowding subjects. Measurements were taken from digitized cephalograms to determine the changes in the lower incisors from T0 (pre-treatment) to T1 (post-treatment). Interproximal reduction (IPR) and buccal expansion were recorded as contributing parameters to crowding resolution. Statistical analysis included a paired t-test and ANOVA. Changes in parameters and the final lower incisor position were evaluated. Results: No significant increase in buccal expansion between the 4 groups (p<0.05) was observed. IPR average values for the Normal and Vertical growth/ mild crowding groups were | en_US |
| dc.description.note | October 2020 | en_US |
| dc.identifier.uri | http://hdl.handle.net/1993/35084 | |
| dc.language.iso | eng | en_US |
| dc.rights | open access | en_US |
| dc.subject | Invisalign vertical growth pattern lower incisor proclination | en_US |
| dc.title | The effect of vertical growth pattern on mandibular incisor proclination in non-extraction Invisalign Teen® cases. | en_US |
| dc.type | master thesis | en_US |