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Effects of unilateral molar distalization with a modified pendulum appliance.
Am J Orthod Dentofacial Orthop. 2007 May; 131(5):600-8.AJ

Abstract

INTRODUCTION

The purpose of this study was to evaluate skeletal and dentoalveolar changes due to unilateral distalization and to determine side effects.

METHODS

Cephalograms and dental casts before and after distal movement of the maxillary molars with pendulum appliances in 15 consecutively treated patients (5 girls and 10 boys, 12.06 +/- 1.32 years), were included in this study. The duration of distalization was 8.46 +/- 2.23 months.

RESULTS

Cephalometric analysis showed no remarkable growth between the 2 measurement times. The mean value for distalization of the first molars was 3.83 +/- 1.09 mm, with distal tipping of 6.45 degrees . The maxillary second molars were also moved distally 2.83 +/- 1.32 mm and tipped distally 14.7 degrees . No significant changes in the position of the third molars were measured. The mean reciprocal mesial movement of the premolars was 1.18 +/- 1.31 mm, with distal tipping of 1.94 degrees . The incisors moved 0.84 +/- 0.79 mm mesially, with mesial tipping of 0.02 degrees and extrusion of 1.21 mm. There was also a significant influence on the contralateral anchorage unit. However, unilateral distalization reduced incisor proclination and induced moderate distal movement of the contralateral anchorage unit based on rotation around a virtual axis perpendicular to the Nance button.

CONCLUSIONS

Effective distal molar movement and less anchorage loss at the front teeth are advantages of unilateral distalization.

Authors+Show Affiliations

Department of Orthodontics, Technical University of Dresden, Dresden, Germany.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

17482078

Citation

Schütze, Stefan F., et al. "Effects of Unilateral Molar Distalization With a Modified Pendulum Appliance." American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, vol. 131, no. 5, 2007, pp. 600-8.
Schütze SF, Gedrange T, Zellmann MR, et al. Effects of unilateral molar distalization with a modified pendulum appliance. Am J Orthod Dentofacial Orthop. 2007;131(5):600-8.
Schütze, S. F., Gedrange, T., Zellmann, M. R., & Harzer, W. (2007). Effects of unilateral molar distalization with a modified pendulum appliance. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 131(5), 600-8.
Schütze SF, et al. Effects of Unilateral Molar Distalization With a Modified Pendulum Appliance. Am J Orthod Dentofacial Orthop. 2007;131(5):600-8. PubMed PMID: 17482078.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of unilateral molar distalization with a modified pendulum appliance. AU - Schütze,Stefan F, AU - Gedrange,Tomas, AU - Zellmann,Markus R, AU - Harzer,Winfried, PY - 2005/03/01/received PY - 2005/09/01/revised PY - 2005/09/01/accepted PY - 2007/5/8/pubmed PY - 2007/5/23/medline PY - 2007/5/8/entrez SP - 600 EP - 8 JF - American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics JO - Am J Orthod Dentofacial Orthop VL - 131 IS - 5 N2 - INTRODUCTION: The purpose of this study was to evaluate skeletal and dentoalveolar changes due to unilateral distalization and to determine side effects. METHODS: Cephalograms and dental casts before and after distal movement of the maxillary molars with pendulum appliances in 15 consecutively treated patients (5 girls and 10 boys, 12.06 +/- 1.32 years), were included in this study. The duration of distalization was 8.46 +/- 2.23 months. RESULTS: Cephalometric analysis showed no remarkable growth between the 2 measurement times. The mean value for distalization of the first molars was 3.83 +/- 1.09 mm, with distal tipping of 6.45 degrees . The maxillary second molars were also moved distally 2.83 +/- 1.32 mm and tipped distally 14.7 degrees . No significant changes in the position of the third molars were measured. The mean reciprocal mesial movement of the premolars was 1.18 +/- 1.31 mm, with distal tipping of 1.94 degrees . The incisors moved 0.84 +/- 0.79 mm mesially, with mesial tipping of 0.02 degrees and extrusion of 1.21 mm. There was also a significant influence on the contralateral anchorage unit. However, unilateral distalization reduced incisor proclination and induced moderate distal movement of the contralateral anchorage unit based on rotation around a virtual axis perpendicular to the Nance button. CONCLUSIONS: Effective distal molar movement and less anchorage loss at the front teeth are advantages of unilateral distalization. SN - 1097-6752 UR - https://www.unboundmedicine.com/medline/citation/17482078/Effects_of_unilateral_molar_distalization_with_a_modified_pendulum_appliance_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889-5406(07)00035-2 DB - PRIME DP - Unbound Medicine ER -