Abstract
Abstract A female patient, aged 15 years and 4 months at the commencement of treatment, presented with a mild Class III malocclusion, an anterior open bite and crowded, lingually collapsed arches. Non-surgical treatment was undertaken utilising the extraction of a lower incisor and clear aligners to control the vertical dimension, extrude the incisors and resolve the crowding. The case was completed in 21 months. Favourable occlusal and facial/aesthetic outcomes were obtained. A unique feature of this case report was that digital files of the prescribed and achieved outcomes were available for superimposition, and so it was possible to demonstrate the level to which the clinical outcome matched the virtual prescribed plan designated in the ClinCheck® software.
Highlights
Following the first report of treatment of a lower incisor extraction case using Invisalign® appliances in 2002,1 a 12 consecutively-treated patient case series[2] and a three-patient case report[3] were published by 2016. It appears that the Invisalign® appliance is able to produce satisfactory clinical outcomes in the management of lower incisor extraction cases
The described case demonstrated the effectiveness of using clear aligners to treat a patient who presented with a mild Class III malocclusion and an anterior open bite due, in part, to excessive vertical facial proportions
No mandibular autorotation was evident from the pretreatment to the post-treatment superimpositions
Summary
Following the first report of treatment of a lower incisor extraction case using Invisalign® appliances in 2002,1 a 12 consecutively-treated patient case series[2] and a three-patient case report[3] were published by 2016. An examination of the smile revealed consonance of the incisal edges with the lower lip, acceptable upper incisor display, coincidence of the upper dental and facial midlines, and an increased buccal corridor width and reduced posterior tooth display. ACCURACY OF ALIGNER TREATMENT OUTCOME USING DIGITAL HEATMAPS was characterised by a mild Class III buccal segment relationship with moderate to severe upper and lower crowding, an anterior open bite of 2 mm, an overjet of 6.8 mm, and tapered, lingually inclined buccal segments. (1) Relieve the crowding, while respecting the periodontal limits of the dentition and avoiding negative impacts on the soft tissue profile (2) Achieve a positive overbite while maintaining or improving the vertical skeletal relationships (3) Coordinate the upper and lower arches, increase the display of the posterior dentition on smiling and reduce the buccal corridor width.
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