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:: دوره 1، شماره 1 و 1 - ( مجموعه مقالات ارتودنسی 1390 ) ::
جلد 1 شماره 1 و 1 صفحات 0-0 برگشت به فهرست نسخه ها
CBCT of skeletal changes following rapid maxillary expansion to increase arch-length with a development-dependent bonded or banded appliance
چکیده:   (1436 مشاهده)

 Objective:

  To assess the three-dimensional (3D) skeletal response to a standardized 5 mm of rapid maxillary expansion (RME) in growing children (6–15 years) with maxillary width deficiency and crowding.

 Materials and Methods:

 A bonded appliance was used prior to the eruption of the maxillary first premolars (Mx4s), and a banded appliance was used thereafter. A consecutive sample of 89 patients (29 boys and 60 girls) from a large pediatric dentistry and orthodontics practice was divided into four groups: 1) 6–8 years old (n  =  26), 2) 9–11 years old with unerupted Mx4s (n  =  21), 3) 9–11 years with erupted Mx4s (n  =  23), and 4) 12–15 years (n  =  19). For all patients, the 3D evaluation of dental and skeletal effects was performed with cone-beam computed tomography (CBCT).

 Results:

  For both appliances in all patients, CBCT confirmed a triangular pattern of expansion in both the frontal and sagittal planes. Overall, both appliances produced significant maxillary expansion (>80% of the 5-mm activation), but older children showed a progressively more dental (less skeletal) response. Comparison of the two types of expanders in the crossover sample, children aged 9–11 years, showed that the bonded RME produced the most efficient skeletal expansion in the preadolescent sample. Increased maxillary width at the level of the zygomaticomaxillary suture was the best indicator for development of maxillary arch circumference.

 Conclusion:

 Development-dependent appliances (bonded RPE before Mx4s erupt, and a banded device thereafter) provided optimal RME treatment for all children from age 6–15 years.


 Source: The Angel Orthodontists

 Full Text

واژه‌های کلیدی: CBCT، RME، Bonded expander، Banded expander، Maxillary deficiency، Crowding
     
نوع مطالعه: پژوهشي | موضوع مقاله: ارتودنسی
دریافت: 1392/7/6 | انتشار: 1390/10/25
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CBCT of skeletal changes following rapid maxillary expansion to increase arch-length with a development-dependent bonded or banded appliance. 1. 1390; 1 (1 و 1)

URL: http://idai.ir/article-1-2045-fa.html



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Creative Commons License این مقاله تحت شرایط Creative Commons Attribution-NonCommercial 4.0 International License قابل بازنشر است.
دوره 1، شماره 1 و 1 - ( مجموعه مقالات ارتودنسی 1390 ) برگشت به فهرست نسخه ها
جامعه اسلامی دندانپزشکان Islamic Dental Association of IRAN

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