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Effects on the sagittal pharyngeal dimensions of protraction and rapid palatal expansion in Class III malocclusion subjects.
Eur J Orthod. 2008 Feb; 30(1):61-6.EJ

Abstract

This study examined the effects of rapid palatal expansion (RPE) and maxillary protraction headgear therapy in 18 patients with a skeletal Class III malocclusion (11 girls and seven boys; mean age 10.9 years) on upper airway dimensions compared with an untreated control group (nine girls and eight boys; mean age 10.9 years). Pre- and post-treatment cephalometric radiographs were traced and analysed at similar time intervals. The average treatment time was 6.94 +/- 0.56 months. Wilcoxon's test was used for intragroup comparisons and the Mann-Whitney U-test for intergroup comparisons. A significant increase occurred in the maxillary forward position. Mandibular forward movement and downward and backward rotation were inhibited. In addition, the upper incisors were proclined (P < 0.001), and the lower incisors were significantly retroclined (P < 0.05). When the treatment and control groups were compared, the upper airway linear measurements (pns-ad1, pns-ad2, APW-PPW, APW'-PPW') and the nasopharyngeal area had increased in the treatment group. These results demonstrated that maxillary expansion together with protraction of the maxilla improved naso- and oropharyngeal airway dimensions in the short term.

Authors+Show Affiliations

Private Practice, Gaziantep, Turkey.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

17906307

Citation

Kilinç, Ali Serdar, et al. "Effects On the Sagittal Pharyngeal Dimensions of Protraction and Rapid Palatal Expansion in Class III Malocclusion Subjects." European Journal of Orthodontics, vol. 30, no. 1, 2008, pp. 61-6.
Kilinç AS, Arslan SG, Kama JD, et al. Effects on the sagittal pharyngeal dimensions of protraction and rapid palatal expansion in Class III malocclusion subjects. Eur J Orthod. 2008;30(1):61-6.
Kilinç, A. S., Arslan, S. G., Kama, J. D., Ozer, T., & Dari, O. (2008). Effects on the sagittal pharyngeal dimensions of protraction and rapid palatal expansion in Class III malocclusion subjects. European Journal of Orthodontics, 30(1), 61-6.
Kilinç AS, et al. Effects On the Sagittal Pharyngeal Dimensions of Protraction and Rapid Palatal Expansion in Class III Malocclusion Subjects. Eur J Orthod. 2008;30(1):61-6. PubMed PMID: 17906307.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects on the sagittal pharyngeal dimensions of protraction and rapid palatal expansion in Class III malocclusion subjects. AU - Kilinç,Ali Serdar, AU - Arslan,Seher Gündüz, AU - Kama,Jalen Devecioglu, AU - Ozer,Törün, AU - Dari,Osman, Y1 - 2007/09/28/ PY - 2007/10/2/pubmed PY - 2008/4/26/medline PY - 2007/10/2/entrez SP - 61 EP - 6 JF - European journal of orthodontics JO - Eur J Orthod VL - 30 IS - 1 N2 - This study examined the effects of rapid palatal expansion (RPE) and maxillary protraction headgear therapy in 18 patients with a skeletal Class III malocclusion (11 girls and seven boys; mean age 10.9 years) on upper airway dimensions compared with an untreated control group (nine girls and eight boys; mean age 10.9 years). Pre- and post-treatment cephalometric radiographs were traced and analysed at similar time intervals. The average treatment time was 6.94 +/- 0.56 months. Wilcoxon's test was used for intragroup comparisons and the Mann-Whitney U-test for intergroup comparisons. A significant increase occurred in the maxillary forward position. Mandibular forward movement and downward and backward rotation were inhibited. In addition, the upper incisors were proclined (P < 0.001), and the lower incisors were significantly retroclined (P < 0.05). When the treatment and control groups were compared, the upper airway linear measurements (pns-ad1, pns-ad2, APW-PPW, APW'-PPW') and the nasopharyngeal area had increased in the treatment group. These results demonstrated that maxillary expansion together with protraction of the maxilla improved naso- and oropharyngeal airway dimensions in the short term. SN - 0141-5387 UR - https://www.unboundmedicine.com/medline/citation/17906307/Effects_on_the_sagittal_pharyngeal_dimensions_of_protraction_and_rapid_palatal_expansion_in_Class_III_malocclusion_subjects_ L2 - https://academic.oup.com/ejo/article-lookup/doi/10.1093/ejo/cjm076 DB - PRIME DP - Unbound Medicine ER -