Preadolescents’ Smile Outcomes after Two Different Orthodontic Treatments: Traditional Interceptive Therapy with Rapid Maxillary Expansion (RME)/Schwarz Plate and Clear Aligners
To compare preadolescents’ smile outcomes after two different orthodontic treatments: RME/Schwarz plate (RS) and clear aligners (CAs). A sample of 31 patients (13 M, 18 F, mean age 8.3 ± 1.2 y.m) treated with RS and a sample of 28 patients (12 M, 16 F, mean age 7.9 ± 1.1 y.m) treated with CAS were i...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-10-01
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| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/14/20/9325 |
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| Summary: | To compare preadolescents’ smile outcomes after two different orthodontic treatments: RME/Schwarz plate (RS) and clear aligners (CAs). A sample of 31 patients (13 M, 18 F, mean age 8.3 ± 1.2 y.m) treated with RS and a sample of 28 patients (12 M, 16 F, mean age 7.9 ± 1.1 y.m) treated with CAS were included. Pre-treatment and post-treatment records were taken before the treatment (T1) and at the end of treatment (T2). Seventeen variables were evaluated. Both therapies were effective in smile width increase (RS = <i>p</i> < 0.02; CAs = <i>p</i> < 0.04) and buccal corridor reduction (RS = <i>p</i> < 0.02; CAs = <i>p</i> < 0.04). The intragroup analysis showed in the RS group an increase of incisor gingival display (<i>p</i> < 0.02), overbite (OVB) (<i>p</i> < 0.04) alongside a reduction of overjet (OVJ) (<i>p</i> < 0.01). Conversely, the CAs group evidenced a reduction in incisor gingival display (<i>p</i> < 0.04) and OVB (<i>p</i> < 0.01) with an increase in C angulation (<i>p</i> < 0.02) and maxillary incisor inclination (<i>p</i> < 0.04). An intergroup comparison evidenced a greater improvement in smile width, smile index and buccal corridor in the RS group with respect to the CAs group (<i>p</i> < 0.02; <i>p</i> < 0.02; <i>p</i> < 0.03). CAs were more effective in the management of gingival display, incisor position, midline correction (incisor gingival display <i>p</i> < 0.01; maxillary incisor position <i>p</i> < 0.04; maxillary dental midline <i>p</i> < 0.02), with a better control of OVJ (<i>p</i> < 0.01) and OVB (<i>p</i> < 0.02). The RS approach resulted in a greater smile width and a reduction in buccal corridor with respect to the CAs. The CAs provided a better management of both gingival display and smile aesthetics. |
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| ISSN: | 2076-3417 |