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Skeletal and dental effects of a mini maxillary protraction appliance.
Angle Orthod. 2006 May; 76(3):360-8.AO

Abstract

The aim of this study was to evaluate the skeletal and dentoalveolar changes achieved by a modified protractor in growing skeletal and dental Class III patients and to compare these changes with normal growth in a Class I untreated control group. The study group consisted of 25 patients (11 girls, 14 boys; mean age 11.74 +/- 1.81 years). The control group was composed of 20 patients (15 girls, five boys; mean age 11.89 +/- 1.08 years). The Class III patients were treated with a bonded acrylic cap splint type expander and a modified maxillary protractor until a positive overjet was achieved. The mean observation period was 0.65 years. Changes in study and control groups and differences between the groups were analyzed statistically. The results showed that protraction appliance produced a significant positive improvement in maxillo-mandibular relations. The forward movement of the maxilla was significant in treated Class III patients, but a slight difference was present between the two groups regarding maxillary rotation. The effective length of the maxilla was significantly increased in the Class III patients. The mandible was positioned backward, and posterior rotation of the mandible was significant in the treatment group. There was a significant increase in lower anterior facial height of treated Class III patients. The dentoalveolar measurements showed that the maxillary incisors proclined and the mandibular incisors significantly retroclined in the Class III group. A modified maxillary protractor treatment is effective for correcting skeletal Class III malocclusion.

Authors+Show Affiliations

Department of Orthodontics, Ankara University, 06500 Besevler, Ankara, Turkey.No affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

16637712

Citation

Altug, Zahir, and Aysegul Dalkiran Arslan. "Skeletal and Dental Effects of a Mini Maxillary Protraction Appliance." The Angle Orthodontist, vol. 76, no. 3, 2006, pp. 360-8.
Altug Z, Arslan AD. Skeletal and dental effects of a mini maxillary protraction appliance. Angle Orthod. 2006;76(3):360-8.
Altug, Z., & Arslan, A. D. (2006). Skeletal and dental effects of a mini maxillary protraction appliance. The Angle Orthodontist, 76(3), 360-8.
Altug Z, Arslan AD. Skeletal and Dental Effects of a Mini Maxillary Protraction Appliance. Angle Orthod. 2006;76(3):360-8. PubMed PMID: 16637712.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Skeletal and dental effects of a mini maxillary protraction appliance. AU - Altug,Zahir, AU - Arslan,Aysegul Dalkiran, PY - 2006/4/28/pubmed PY - 2006/7/1/medline PY - 2006/4/28/entrez SP - 360 EP - 8 JF - The Angle orthodontist JO - Angle Orthod VL - 76 IS - 3 N2 - The aim of this study was to evaluate the skeletal and dentoalveolar changes achieved by a modified protractor in growing skeletal and dental Class III patients and to compare these changes with normal growth in a Class I untreated control group. The study group consisted of 25 patients (11 girls, 14 boys; mean age 11.74 +/- 1.81 years). The control group was composed of 20 patients (15 girls, five boys; mean age 11.89 +/- 1.08 years). The Class III patients were treated with a bonded acrylic cap splint type expander and a modified maxillary protractor until a positive overjet was achieved. The mean observation period was 0.65 years. Changes in study and control groups and differences between the groups were analyzed statistically. The results showed that protraction appliance produced a significant positive improvement in maxillo-mandibular relations. The forward movement of the maxilla was significant in treated Class III patients, but a slight difference was present between the two groups regarding maxillary rotation. The effective length of the maxilla was significantly increased in the Class III patients. The mandible was positioned backward, and posterior rotation of the mandible was significant in the treatment group. There was a significant increase in lower anterior facial height of treated Class III patients. The dentoalveolar measurements showed that the maxillary incisors proclined and the mandibular incisors significantly retroclined in the Class III group. A modified maxillary protractor treatment is effective for correcting skeletal Class III malocclusion. SN - 0003-3219 UR - https://www.unboundmedicine.com/medline/citation/16637712/Skeletal_and_dental_effects_of_a_mini_maxillary_protraction_appliance_ DB - PRIME DP - Unbound Medicine ER -