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The relationship of the occurrence between three-rooted deciduous mandibular second molars and three-rooted permanent mandibular first molars in children

BACKGROUND/PURPOSE: This study aimed to determine the correlation between the occurrence of three-rooted deciduous mandibular second molars and three-rooted permanent mandibular first molars in children. MATERIALS AND METHODS: Orthopantograms (n = 977) obtained from August 2008 to December 2010 were...

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Autores principales: Hsu, Chia-ling, Huang, Jou-en, Chen, Hui-ling, Tu, Ming-gene, Liu, Jeng-fen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Association for Dental Sciences of the Republic of China 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8025230/
https://www.ncbi.nlm.nih.gov/pubmed/33854706
http://dx.doi.org/10.1016/j.jds.2020.11.008
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author Hsu, Chia-ling
Huang, Jou-en
Chen, Hui-ling
Tu, Ming-gene
Liu, Jeng-fen
author_facet Hsu, Chia-ling
Huang, Jou-en
Chen, Hui-ling
Tu, Ming-gene
Liu, Jeng-fen
author_sort Hsu, Chia-ling
collection PubMed
description BACKGROUND/PURPOSE: This study aimed to determine the correlation between the occurrence of three-rooted deciduous mandibular second molars and three-rooted permanent mandibular first molars in children. MATERIALS AND METHODS: Orthopantograms (n = 977) obtained from August 2008 to December 2010 were retrospectively screened and examined. Among the 977 orthopantograms, those of 591 participants (314 boys and 277 girls; mean age, 8.7 years) with bilateral deciduous mandibular second molars and permanent mandibular first molars were studied. The gender predilection and prevalence of three-rooted mandibular molars were assessed, and the pattern of concurrence was investigated. RESULTS: The prevalence of three roots were 28.4% and 27.6% in the deciduous mandibular second molars and permanent mandibular first molars, respectively. Bilateral occurrence of three-rooted mandibular molars was almost 60% for both deciduous and permanent molars. There was a significantly greater prevalence of three-rooted mandibular molars on the right side of the mandible than that on the left side. CONCLUSION: Deciduous and permanent molars show a similar prevalence of three roots. The presence of three-rooted deciduous mandibular second molar can strongly predict the possibility of three roots in permanent mandibular first molar.
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spelling pubmed-80252302021-04-13 The relationship of the occurrence between three-rooted deciduous mandibular second molars and three-rooted permanent mandibular first molars in children Hsu, Chia-ling Huang, Jou-en Chen, Hui-ling Tu, Ming-gene Liu, Jeng-fen J Dent Sci Original Article BACKGROUND/PURPOSE: This study aimed to determine the correlation between the occurrence of three-rooted deciduous mandibular second molars and three-rooted permanent mandibular first molars in children. MATERIALS AND METHODS: Orthopantograms (n = 977) obtained from August 2008 to December 2010 were retrospectively screened and examined. Among the 977 orthopantograms, those of 591 participants (314 boys and 277 girls; mean age, 8.7 years) with bilateral deciduous mandibular second molars and permanent mandibular first molars were studied. The gender predilection and prevalence of three-rooted mandibular molars were assessed, and the pattern of concurrence was investigated. RESULTS: The prevalence of three roots were 28.4% and 27.6% in the deciduous mandibular second molars and permanent mandibular first molars, respectively. Bilateral occurrence of three-rooted mandibular molars was almost 60% for both deciduous and permanent molars. There was a significantly greater prevalence of three-rooted mandibular molars on the right side of the mandible than that on the left side. CONCLUSION: Deciduous and permanent molars show a similar prevalence of three roots. The presence of three-rooted deciduous mandibular second molar can strongly predict the possibility of three roots in permanent mandibular first molar. Association for Dental Sciences of the Republic of China 2021-03 2020-12-03 /pmc/articles/PMC8025230/ /pubmed/33854706 http://dx.doi.org/10.1016/j.jds.2020.11.008 Text en © 2020 Association for Dental Sciences of the Republic of China. Publishing services by Elsevier B.V. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Original Article
Hsu, Chia-ling
Huang, Jou-en
Chen, Hui-ling
Tu, Ming-gene
Liu, Jeng-fen
The relationship of the occurrence between three-rooted deciduous mandibular second molars and three-rooted permanent mandibular first molars in children
title The relationship of the occurrence between three-rooted deciduous mandibular second molars and three-rooted permanent mandibular first molars in children
title_full The relationship of the occurrence between three-rooted deciduous mandibular second molars and three-rooted permanent mandibular first molars in children
title_fullStr The relationship of the occurrence between three-rooted deciduous mandibular second molars and three-rooted permanent mandibular first molars in children
title_full_unstemmed The relationship of the occurrence between three-rooted deciduous mandibular second molars and three-rooted permanent mandibular first molars in children
title_short The relationship of the occurrence between three-rooted deciduous mandibular second molars and three-rooted permanent mandibular first molars in children
title_sort relationship of the occurrence between three-rooted deciduous mandibular second molars and three-rooted permanent mandibular first molars in children
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8025230/
https://www.ncbi.nlm.nih.gov/pubmed/33854706
http://dx.doi.org/10.1016/j.jds.2020.11.008
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