Cephalometric changes in nasopharyngeal area after anterior maxillary segmental distraction versus Le Fort I osteotomy in patients with cleft lip and palate

Soodeh Tahmasbi; Abdolreza Jamilian; Rahman Showkatbakhsh; Fereydoun Pourdanesh; Mohammad Behnaz

doi:10.4103/ejd.ejd_374_17

European Journal of Dentistry, Inhaltsverzeichnis

CC BY-NC-ND 4.0 · Eur J Dent 2018; 12(03): 393-397
DOI: 10.4103/ejd.ejd_374_17

Original Article

Dental Investigation Society

Cephalometric changes in nasopharyngeal area after anterior maxillary segmental distraction versus Le Fort I osteotomy in patients with cleft lip and palate

Soodeh Tahmasbi

¹Department of Orthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran

,

Abdolreza Jamilian

²Department of Orthodontics, School of Dentistry, Islamic Azad University, Tehran, Iran

,

Rahman Showkatbakhsh

¹Department of Orthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran

,

Fereydoun Pourdanesh

³Department of Oral and Maxillofacial Surgery, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran

,

Mohammad Behnaz

¹Department of Orthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran

› Institutsangaben

Abstract

ABSTRACT

Objective: The present study was designed to compare the effects of two surgical methods, anterior maxillary segmental distraction (AMSD) versus conventional Le Fort I osteotomy, on cephalometric changes of velopharyngeal area of patients with cleft lip and palate. Materials and Methods: This study was conducted on 20 CLP in two groups. The first group had classic Le Fort I maxillary advancement and the second group had AMSD with a modified hyrax as an intraoral tooth-borne distractor. In the second group, 1 week after the surgery, activation of hyrax screw was started with the rate of 2 times a day for about 10 days. Initial and final lateral cephalograms were traced and analyzed by OrthoSurgerX software. Results: The changes in variables evaluating velopharyngeal status showed a significant difference between the two groups. In Group A (conventional), the mean of nasopharyngeal area and Nasopharynx floor length showed a significant increase (P < 0.05) after the surgery, while in Group B (DO), the trend of changes was vice-versa. The changes in SNA, overjet, and soft-tissue convexity were similar in both groups. Conclusion: AMSD can improve facial profile, almost similar to the conventional Le Fort I advancement, while there is a significant decrease in nasopharyngeal; hereby there is no increase in the velopharyngeal sphincter.

Key words:

Anterior maxillary segmental distraction - cleft lip and palate - velopharyngeal area

Volltext

Referenzen

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