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The success and effectiveness of miniscrew-assisted rapid palatal expansion are age- and sex-dependent

 Ji Yoon Jeon  ;  Sung-Hwan Choi  ;  Chooryung Judi Chung  ;  Kee-Joon Lee 
 CLINICAL ORAL INVESTIGATIONS, Vol.26(3) : 2993-3003, 2022-03 
Journal Title
Issue Date
Female ; Humans ; Male ; Maxilla* ; Palatal Expansion Technique* ; Palate ; Retrospective Studies ; Sutures
Adult ; Cranial sutures ; Orthodontic appliances ; Palatal expansion technique
Objectives: This study aimed to assess the success rate and the amount of suture separation after the miniscrew-assisted rapid palatal expansion (MARPE) procedure in relation to the chronological age and sex of the patients.

Materials and methods: The periapical radiographs of 215 subjects (95 male; 120 female; range, 6-60 years) who had undergone MARPE treatment were retrospectively analyzed. The success of suture separation was determined and, in suture-separated subjects, the amount of suture separation was evaluated by suture separation ratio calculated from the periapical radiograph obtained after active expansion. Association tests were performed using linear-by-linear association, the Jonckheere-Terpstra test, Fisher's exact test, and the Mann-Whitney U test, and linear regression models were also developed.

Results: The success rate of suture separation was 61.05% in male, 94.17% in female, and 79.53% in both sexes. There was a statistically significant association between older age and suture nonseparation in male (p < 0.001), but not in female (p = 0.221). In suture-separated subjects, there was a statistically significant trend toward a low amount of suture separation with older age subgroups in both sexes (p < 0.001); however, there was no statistically significant difference in the amount of suture separation between male and female in all age subgroups.

Conclusions: Older patients treated with MARPE, particularly in male, may have a reduced likelihood of both success in suture separation and sufficient basal bone expansion.

Clinical relevance: This study demonstrates that clinicians should consider that the success rate of MARPE and the amount of suture separation may depend on chronological age and sex.
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Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
Yonsei Authors
Lee, Kee Joon(이기준) ORCID logo https://orcid.org/0000-0002-0782-3128
Jeon, Ji Yoon(전지윤)
Chung, Chooryung J.(정주령) ORCID logo https://orcid.org/0000-0001-9399-7193
Choi, Sung Hwan(최성환) ORCID logo https://orcid.org/0000-0002-1150-0268
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