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Comparisons of maxillary incisor retraction effects for patients with first premolar extractions between Damon Q and Invisalign(®): A retrospective study

Torque control of maxillary incisors is very important in maxillary protrusion patients with first premolars extraction, but the efficacy of maxillary incisor retraction of clear aligners is still controversial now. This retrospective study was aimed to compare the retraction effects between Damon Q...

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Autores principales: Chen, Jiping, Wen, Juan, Huang, Ling, Zhang, Lu, Han, Lei, Li, Huang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Lippincott Williams & Wilkins 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9542911/
https://www.ncbi.nlm.nih.gov/pubmed/36221412
http://dx.doi.org/10.1097/MD.0000000000030919
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author Chen, Jiping
Wen, Juan
Huang, Ling
Zhang, Lu
Han, Lei
Li, Huang
author_facet Chen, Jiping
Wen, Juan
Huang, Ling
Zhang, Lu
Han, Lei
Li, Huang
author_sort Chen, Jiping
collection PubMed
description Torque control of maxillary incisors is very important in maxillary protrusion patients with first premolars extraction, but the efficacy of maxillary incisor retraction of clear aligners is still controversial now. This retrospective study was aimed to compare the retraction effects between Damon Q and Invisalign(®) appliances in patients with first premolar extractions. 59 patients (33 cases with Damon Q and 26 cases with Invisalign(®)) with first premolar extraction were selected in this study. Subsequently, patients of each group were allocated into three subgroups according to the pretreatment value of U1-NA (°). The retraction effects of maxillary incisors and upper lips were accessed by the variations of cephalometric, overbite and overjet measurements. Treatment duration with Invisalign(®) (31.4 ± 6.4 months) was longer than Damon Q (27.7 ± 6.3 months) (P = .03). The angular measurements, U1-NA (°) and U1-SN (°) showed more lingual crown inclinations in Invisalign(®) group than Damon Q group (P ≤ .04). When evaluating linear measurements, the retractions of the maxillary incisors and upper lip positions showed no significant differences (P ≥ .13). Invisalign(®) group also showed more lingual crown retractions and labial root deviations compared to Damon Q group in subgroup Ⅲ (P ≤ .037). As regards to the molar relationship, Invisalign(®) displayed less Class Ⅰ molar relationship than Damon Q group. The increased overbite of anterior incisors was also showed in the Invisalign(®) treatment group (P ≤ .047). Invisalign(®) was not sufficiently effective in retracting maxillary incisors compared with Damon Q appliances. Invisalign(®) led to more lingual inclination movement and increased overbite.
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spelling pubmed-95429112022-10-11 Comparisons of maxillary incisor retraction effects for patients with first premolar extractions between Damon Q and Invisalign(®): A retrospective study Chen, Jiping Wen, Juan Huang, Ling Zhang, Lu Han, Lei Li, Huang Medicine (Baltimore) 5900 Torque control of maxillary incisors is very important in maxillary protrusion patients with first premolars extraction, but the efficacy of maxillary incisor retraction of clear aligners is still controversial now. This retrospective study was aimed to compare the retraction effects between Damon Q and Invisalign(®) appliances in patients with first premolar extractions. 59 patients (33 cases with Damon Q and 26 cases with Invisalign(®)) with first premolar extraction were selected in this study. Subsequently, patients of each group were allocated into three subgroups according to the pretreatment value of U1-NA (°). The retraction effects of maxillary incisors and upper lips were accessed by the variations of cephalometric, overbite and overjet measurements. Treatment duration with Invisalign(®) (31.4 ± 6.4 months) was longer than Damon Q (27.7 ± 6.3 months) (P = .03). The angular measurements, U1-NA (°) and U1-SN (°) showed more lingual crown inclinations in Invisalign(®) group than Damon Q group (P ≤ .04). When evaluating linear measurements, the retractions of the maxillary incisors and upper lip positions showed no significant differences (P ≥ .13). Invisalign(®) group also showed more lingual crown retractions and labial root deviations compared to Damon Q group in subgroup Ⅲ (P ≤ .037). As regards to the molar relationship, Invisalign(®) displayed less Class Ⅰ molar relationship than Damon Q group. The increased overbite of anterior incisors was also showed in the Invisalign(®) treatment group (P ≤ .047). Invisalign(®) was not sufficiently effective in retracting maxillary incisors compared with Damon Q appliances. Invisalign(®) led to more lingual inclination movement and increased overbite. Lippincott Williams & Wilkins 2022-10-07 /pmc/articles/PMC9542911/ /pubmed/36221412 http://dx.doi.org/10.1097/MD.0000000000030919 Text en Copyright © 2022 the Author(s). Published by Wolters Kluwer Health, Inc. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the Creative Commons Attribution License 4.0 (CCBY) (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle 5900
Chen, Jiping
Wen, Juan
Huang, Ling
Zhang, Lu
Han, Lei
Li, Huang
Comparisons of maxillary incisor retraction effects for patients with first premolar extractions between Damon Q and Invisalign(®): A retrospective study
title Comparisons of maxillary incisor retraction effects for patients with first premolar extractions between Damon Q and Invisalign(®): A retrospective study
title_full Comparisons of maxillary incisor retraction effects for patients with first premolar extractions between Damon Q and Invisalign(®): A retrospective study
title_fullStr Comparisons of maxillary incisor retraction effects for patients with first premolar extractions between Damon Q and Invisalign(®): A retrospective study
title_full_unstemmed Comparisons of maxillary incisor retraction effects for patients with first premolar extractions between Damon Q and Invisalign(®): A retrospective study
title_short Comparisons of maxillary incisor retraction effects for patients with first premolar extractions between Damon Q and Invisalign(®): A retrospective study
title_sort comparisons of maxillary incisor retraction effects for patients with first premolar extractions between damon q and invisalign(®): a retrospective study
topic 5900
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9542911/
https://www.ncbi.nlm.nih.gov/pubmed/36221412
http://dx.doi.org/10.1097/MD.0000000000030919
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