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Changes in masticatory performance during the retention period following 4-premolar extraction and non-extraction orthodontic treatment

Authors
 Song-Hyun Lee  ;  Mei Ling Fang  ;  Yoon Jeong Choi  ;  Hyung-Seog Yu  ;  Jee Hwan Kim  ;  Kyung-Seok Hu  ;  Kee-Joon Lee 
Citation
 CLINICAL ORAL INVESTIGATIONS, Vol.27(6) : 2609-2619, 2023-06 
Journal Title
CLINICAL ORAL INVESTIGATIONS
ISSN
 1432-6981 
Issue Date
2023-06
MeSH
Adult ; Bicuspid ; Bite Force* ; Chewing Gum ; Dental Care* ; Humans ; Mastication ; Software
Keywords
Extraction and non-extraction ; Masticatory performance ; Maximum bite force and occlusal contact area ; Orthodontic treatment ; Retention period ; Two-color chewing gum mixing ability
Abstract
Objectives To evaluate changes in masticatory performance (MP) during the retention period after extraction and non-extraction treatment and compare it with MP in individuals with normal occlusion. Materials and methods Adult patients who had completed orthodontic fixed appliance treatment comprised the extraction and non-extraction treatment groups, and those with normal occlusion comprised the control group. Their mixing ability (MA), maximum bite force (MBF), and occlusal contact area (OCA) were recorded immediately after the fixed appliance was removed and at 1 month, 6 months, and 1 year post-treatment. The MA was measured via the two-color chewing gum MA test using ViewGum software, and the MBF and OCA were measured using Dental Prescale II system.Results MA immediately after orthodontic treatment was lower than that in the normal group but showed a time-dependent gradual increase during a 1-year retention period (P < 0.01). The MA at 1 month post-treatment was not significantly dif-ferent between the three groups (P > 0.05). The MA revealed a significant correlation with the MBF and OCA (P < 0.01).Conclusions The MP immediately after orthodontic treatment was lower than that in the normal group but increased gradu-ally, with levels comparable to those of the normal occlusion group at 1 month post-treatment. Further, extraction did not affect the recovery of the MP after orthodontic treatment.Clinical Relevance No other study has evaluated the changes in MP during the retention period after orthodontic treatment. The findings show that compared with MBF and OCA, the patients' MP improved faster to levels found in normal occlusion.
Full Text
https://link.springer.com/article/10.1007/s00784-022-04817-y
DOI
10.1007/s00784-022-04817-y
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Oral Biology (구강생물학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Jee Hwan(김지환) ORCID logo https://orcid.org/0000-0002-0872-4906
Yu, Hyung Seog(유형석) ORCID logo https://orcid.org/0000-0002-1275-5078
Lee, Kee Joon(이기준) ORCID logo https://orcid.org/0000-0002-0782-3128
Choi, Yoon Jeong(최윤정) ORCID logo https://orcid.org/0000-0003-0781-8836
Hu, Kyung Seok(허경석) ORCID logo https://orcid.org/0000-0002-9048-3805
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/199546
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