Effects of two different removable functional appliances on depth of the posterior airway space: a retrospective cephalometric study = Effekte zweier verschiedener herausnehmbarer funktionskieferorthopädischer Apparaturen auf die Tiefe desextrathorakalen Luftraums : eine retrospektive kephalometrische Studie
Objectives: Aim of the study was the comparison of treatment effects upon pharyngeal depth in patients treated with either (1) S-II-appliance or (2) Activator. Methods: Pre- and posttreatment lateral cephalograms of 73 patients were analyzed using a customized set of measurements. According to prede...
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch Deutsch |
| Veröffentlicht: |
2017
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| In: |
Journal of orofacial orthopedics
Year: 2016, Jahrgang: 78, Heft: 2, Pages: 166-175 |
| ISSN: | 1615-6714 |
| DOI: | 10.1007/s00056-016-0071-z |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1007/s00056-016-0071-z Verlag, Volltext: https://doi.org/10.1007/s00056-016-0071-z 
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| Verfasserangaben: | Jan Hourfar, Gero Stefan Michael Kinzinger, Luisa Katharina Meißner, Jörg Alexander Lisson |
| Zusammenfassung: | Objectives: Aim of the study was the comparison of treatment effects upon pharyngeal depth in patients treated with either (1) S-II-appliance or (2) Activator. Methods: Pre- and posttreatment lateral cephalograms of 73 patients were analyzed using a customized set of measurements. According to predefined criteria, patients were either treated with S-II-appliance or Activator. Pharyngeal depth was assessed from cranial to caudal at six levels (P1 to P6). Paired t tests were used for intragroup and t tests for independent samples for intergroup comparisons. Results were considered statistically significant at p ≤ 0.05.Results37 (22 female, 15 male) patients were treated with the S-II-appliance (mean pretreatment age 11.1 ± 1.07 years), and 36 (20 female, 16 male) patients with an Activator (mean pretreatment age 11.3 ± 1.12 years). Mean treatment time was 14 months for the S-II-appliance and 12 months for the Activator. Most measurements at the different levels showed an average increase ranging from approximately 0.5 mm to almost 2 mm. Changes were more pronounced in S-II patients. In contrast to intergroup comparisons, some intragroup comparisons revealed statistically significant differences at levels P5 (p = 0.0062) and P6 (p = 0.0155) in S-II patients and at P1-level (p = 0.0197) in Activator patients. Conclusions: Both appliances similarly led to an increase of the pharyngeal depth. The sites of statistically significant changes differed. |
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| Beschreibung: | Published online: 28 November 2016 Gesehen am 12.09.2018 |
| Beschreibung: | Online Resource |
| ISSN: | 1615-6714 |
| DOI: | 10.1007/s00056-016-0071-z |