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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| Format: | Article |
| Language: | English |
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Elsevier
2021-03-01
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| Series: | Journal of Dental Sciences |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1991790220302452 |
| _version_ | 1823945520266084352 |
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| author | Chia-ling Hsu Jou-en Huang Hui-ling Chen Ming-gene Tu Jeng-fen Liu |
| author_facet | Chia-ling Hsu Jou-en Huang Hui-ling Chen Ming-gene Tu Jeng-fen Liu |
| author_sort | Chia-ling Hsu |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-17T09:17:44Z |
| format | Article |
| id | doaj.art-c29183daf5b6474f84486bfd04324639 |
| institution | Directory Open Access Journal |
| issn | 1991-7902 |
| language | English |
| last_indexed | 2024-12-17T09:17:44Z |
| publishDate | 2021-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Dental Sciences |
| spelling | doaj.art-c29183daf5b6474f84486bfd043246392022-12-21T21:54:54ZengElsevierJournal of Dental Sciences1991-79022021-03-01162580585The relationship of the occurrence between three-rooted deciduous mandibular second molars and three-rooted permanent mandibular first molars in childrenChia-ling Hsu0Jou-en Huang1Hui-ling Chen2Ming-gene Tu3Jeng-fen Liu4Department of Pediatric Dentistry, Taichung Veterans General Hospital, Taichung, TaiwanDepartment of Dentistry, Taichung Veterans General Hospital, Taichung, TaiwanDepartment of Dentistry, Taichung Veterans General Hospital, Taichung, TaiwanDepartment of Endodontics, China Medical University Hospital, Taichung, Taiwan; School of Dentistry, China Medical University, Taichung, TaiwanDepartment of Pediatric Dentistry, Taichung Veterans General Hospital, Taichung, Taiwan; School of Dentistry, Yang Ming University, Taipei, Taiwan; Corresponding author. Department of Pediatric Dentistry, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Sect 4, Taichung 407204, Taiwan. Fax: +886 4 22087126.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.http://www.sciencedirect.com/science/article/pii/S1991790220302452Three-rootedExtra third rootDeciduous second molarPermanent first molarChildren |
| spellingShingle | Chia-ling Hsu Jou-en Huang Hui-ling Chen Ming-gene Tu Jeng-fen Liu The relationship of the occurrence between three-rooted deciduous mandibular second molars and three-rooted permanent mandibular first molars in children Journal of Dental Sciences Three-rooted Extra third root Deciduous second molar Permanent first molar 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 | Three-rooted Extra third root Deciduous second molar Permanent first molar Children |
| url | http://www.sciencedirect.com/science/article/pii/S1991790220302452 |
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