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Digital Dynamic 3D Monitoring of Lower Incisors Intrusion in Lingual Orthodontics

OBJECTIVE: The aim of the present study is to propose a 3-dimensional evaluation of lower intrusion obtained with lingual orthodontics considering not only the crowns but also dental roots. METHODS: 9 adult patients underwent fixed lingual orthodontic treatment with i-TTя lingual brackets system for...

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Autores principales: Chardey, Elia Kodjo, Fastuca, Rosamaria, Beretta, Matteo, Di Blasio, Alberto, Vercellini, Nicolò, Caprioglio, Alberto, Zecca, Piero Antonio, Macchi, Aldo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Bentham Open 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5815052/
https://www.ncbi.nlm.nih.gov/pubmed/29492176
http://dx.doi.org/10.2174/1874210601812010104
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author Chardey, Elia Kodjo
Fastuca, Rosamaria
Beretta, Matteo
Di Blasio, Alberto
Vercellini, Nicolò
Caprioglio, Alberto
Zecca, Piero Antonio
Macchi, Aldo
author_facet Chardey, Elia Kodjo
Fastuca, Rosamaria
Beretta, Matteo
Di Blasio, Alberto
Vercellini, Nicolò
Caprioglio, Alberto
Zecca, Piero Antonio
Macchi, Aldo
author_sort Chardey, Elia Kodjo
collection PubMed
description OBJECTIVE: The aim of the present study is to propose a 3-dimensional evaluation of lower intrusion obtained with lingual orthodontics considering not only the crowns but also dental roots. METHODS: 9 adult patients underwent fixed lingual orthodontic treatment with i-TTя lingual brackets system for the correction of crowding in the lower arch associated with a deep overbite. Initial records, consisting of photos, CBCTs and intraoral scans were collected. Threshold segmentation of the CBCT was performed to generate a three-dimensional virtual model of each the teeth of the lower arch, superimposed with the crown of the same teeth obtained by intraoral scan models to generate a complete set of digital composite lower arch The same procedure was performed to monitor one key step of the i-TT(Я) technique consisting in lower incisors intrusion (T2). T1-T2 three-dimensional superimposition and color displacement maps were generated to measure and evaluate the movements obtained at the lower arch. RESULTS: The root displacement of the incisors during their intrusion in the early stage was totally “bone-safe” in the 88.9% (8 of 9) of the cases observed. No significant extrusion of the premolars used as anchorage unit was measured. CONCLUSION: This method has proved to be an accurate and reliable approach to dynamically visualize the 3-dimensional positions of the teeth, including their roots, with no additional radiation for in-progress treatment monitoring. The 3-dimensional evaluation showed that the employed lingual appliance allowed to obtain significant lower incisors intrusion with negligible undesired extrusion of premolars employed as anchorage teeth.
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spelling pubmed-58150522018-02-28 Digital Dynamic 3D Monitoring of Lower Incisors Intrusion in Lingual Orthodontics Chardey, Elia Kodjo Fastuca, Rosamaria Beretta, Matteo Di Blasio, Alberto Vercellini, Nicolò Caprioglio, Alberto Zecca, Piero Antonio Macchi, Aldo Open Dent J Dentistry OBJECTIVE: The aim of the present study is to propose a 3-dimensional evaluation of lower intrusion obtained with lingual orthodontics considering not only the crowns but also dental roots. METHODS: 9 adult patients underwent fixed lingual orthodontic treatment with i-TTя lingual brackets system for the correction of crowding in the lower arch associated with a deep overbite. Initial records, consisting of photos, CBCTs and intraoral scans were collected. Threshold segmentation of the CBCT was performed to generate a three-dimensional virtual model of each the teeth of the lower arch, superimposed with the crown of the same teeth obtained by intraoral scan models to generate a complete set of digital composite lower arch The same procedure was performed to monitor one key step of the i-TT(Я) technique consisting in lower incisors intrusion (T2). T1-T2 three-dimensional superimposition and color displacement maps were generated to measure and evaluate the movements obtained at the lower arch. RESULTS: The root displacement of the incisors during their intrusion in the early stage was totally “bone-safe” in the 88.9% (8 of 9) of the cases observed. No significant extrusion of the premolars used as anchorage unit was measured. CONCLUSION: This method has proved to be an accurate and reliable approach to dynamically visualize the 3-dimensional positions of the teeth, including their roots, with no additional radiation for in-progress treatment monitoring. The 3-dimensional evaluation showed that the employed lingual appliance allowed to obtain significant lower incisors intrusion with negligible undesired extrusion of premolars employed as anchorage teeth. Bentham Open 2018-01-31 /pmc/articles/PMC5815052/ /pubmed/29492176 http://dx.doi.org/10.2174/1874210601812010104 Text en © 2018 Chardey et al. https://creativecommons.org/licenses/by/4.0/legalcode This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Dentistry
Chardey, Elia Kodjo
Fastuca, Rosamaria
Beretta, Matteo
Di Blasio, Alberto
Vercellini, Nicolò
Caprioglio, Alberto
Zecca, Piero Antonio
Macchi, Aldo
Digital Dynamic 3D Monitoring of Lower Incisors Intrusion in Lingual Orthodontics
title Digital Dynamic 3D Monitoring of Lower Incisors Intrusion in Lingual Orthodontics
title_full Digital Dynamic 3D Monitoring of Lower Incisors Intrusion in Lingual Orthodontics
title_fullStr Digital Dynamic 3D Monitoring of Lower Incisors Intrusion in Lingual Orthodontics
title_full_unstemmed Digital Dynamic 3D Monitoring of Lower Incisors Intrusion in Lingual Orthodontics
title_short Digital Dynamic 3D Monitoring of Lower Incisors Intrusion in Lingual Orthodontics
title_sort digital dynamic 3d monitoring of lower incisors intrusion in lingual orthodontics
topic Dentistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5815052/
https://www.ncbi.nlm.nih.gov/pubmed/29492176
http://dx.doi.org/10.2174/1874210601812010104
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