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Buccal Bone Changes Around First Permanent Molars and Second Primary Molars after Maxillary Expansion with a Low Compliance Ni–Ti Leaf Spring Expander

Background: Vestibular bone thickness changes and dento-alveolar buccal tipping of second primary molars and of first molars after maxillary expansion performed with a slow maxillary expansion protocol was investigated. Methods: Twenty patients (mean age 7.3 ± 0.9 years old; 9 male and 11 female) we...

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Autores principales: Lanteri, Valentina, Cavagnetto, Davide, Abate, Andrea, Mainardi, Eleonora, Gaffuri, Francesca, Ugolini, Alessandro, Maspero, Cinzia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7730214/
https://www.ncbi.nlm.nih.gov/pubmed/33291246
http://dx.doi.org/10.3390/ijerph17239104
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author Lanteri, Valentina
Cavagnetto, Davide
Abate, Andrea
Mainardi, Eleonora
Gaffuri, Francesca
Ugolini, Alessandro
Maspero, Cinzia
author_facet Lanteri, Valentina
Cavagnetto, Davide
Abate, Andrea
Mainardi, Eleonora
Gaffuri, Francesca
Ugolini, Alessandro
Maspero, Cinzia
author_sort Lanteri, Valentina
collection PubMed
description Background: Vestibular bone thickness changes and dento-alveolar buccal tipping of second primary molars and of first molars after maxillary expansion performed with a slow maxillary expansion protocol was investigated. Methods: Twenty patients (mean age 7.3 ± 0.9 years old; 9 male and 11 female) were treated according to the Leaf Expander protocol. Buccal alveolar bone thickness (BT), buccal alveolar bone height (BH), inter-dental angle (TIP), and inter-molar width (IW) regarding first molars and second primary molars were calculated before and after expansion on cone beam computed tomography (CBCT) images. Descriptive statistics and paired t-tests were used to assess changes between the pre-treatment and post-treatment measurements. Results: Bone thickness vestibular to second primary molars and intermolar width of both teeth were the only variables that showed statistically significant changes. Conclusions: It appears that buccal bone thickness vestibular to first molars was not significantly reduced after maxillary expansion with the Leaf Expander. The clinical use of a slow maxillary expander with Ni–Ti springs appears efficient and safe in in the correction of maxillary hypoplasia during mixed dentition.
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spelling pubmed-77302142020-12-12 Buccal Bone Changes Around First Permanent Molars and Second Primary Molars after Maxillary Expansion with a Low Compliance Ni–Ti Leaf Spring Expander Lanteri, Valentina Cavagnetto, Davide Abate, Andrea Mainardi, Eleonora Gaffuri, Francesca Ugolini, Alessandro Maspero, Cinzia Int J Environ Res Public Health Article Background: Vestibular bone thickness changes and dento-alveolar buccal tipping of second primary molars and of first molars after maxillary expansion performed with a slow maxillary expansion protocol was investigated. Methods: Twenty patients (mean age 7.3 ± 0.9 years old; 9 male and 11 female) were treated according to the Leaf Expander protocol. Buccal alveolar bone thickness (BT), buccal alveolar bone height (BH), inter-dental angle (TIP), and inter-molar width (IW) regarding first molars and second primary molars were calculated before and after expansion on cone beam computed tomography (CBCT) images. Descriptive statistics and paired t-tests were used to assess changes between the pre-treatment and post-treatment measurements. Results: Bone thickness vestibular to second primary molars and intermolar width of both teeth were the only variables that showed statistically significant changes. Conclusions: It appears that buccal bone thickness vestibular to first molars was not significantly reduced after maxillary expansion with the Leaf Expander. The clinical use of a slow maxillary expander with Ni–Ti springs appears efficient and safe in in the correction of maxillary hypoplasia during mixed dentition. MDPI 2020-12-06 2020-12 /pmc/articles/PMC7730214/ /pubmed/33291246 http://dx.doi.org/10.3390/ijerph17239104 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lanteri, Valentina
Cavagnetto, Davide
Abate, Andrea
Mainardi, Eleonora
Gaffuri, Francesca
Ugolini, Alessandro
Maspero, Cinzia
Buccal Bone Changes Around First Permanent Molars and Second Primary Molars after Maxillary Expansion with a Low Compliance Ni–Ti Leaf Spring Expander
title Buccal Bone Changes Around First Permanent Molars and Second Primary Molars after Maxillary Expansion with a Low Compliance Ni–Ti Leaf Spring Expander
title_full Buccal Bone Changes Around First Permanent Molars and Second Primary Molars after Maxillary Expansion with a Low Compliance Ni–Ti Leaf Spring Expander
title_fullStr Buccal Bone Changes Around First Permanent Molars and Second Primary Molars after Maxillary Expansion with a Low Compliance Ni–Ti Leaf Spring Expander
title_full_unstemmed Buccal Bone Changes Around First Permanent Molars and Second Primary Molars after Maxillary Expansion with a Low Compliance Ni–Ti Leaf Spring Expander
title_short Buccal Bone Changes Around First Permanent Molars and Second Primary Molars after Maxillary Expansion with a Low Compliance Ni–Ti Leaf Spring Expander
title_sort buccal bone changes around first permanent molars and second primary molars after maxillary expansion with a low compliance ni–ti leaf spring expander
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7730214/
https://www.ncbi.nlm.nih.gov/pubmed/33291246
http://dx.doi.org/10.3390/ijerph17239104
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