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Anchorage quality of deciduous molars versus premolars for molar distalization with a pendulum appliance.
Am J Orthod Dentofacial Orthop. 2005 Mar; 127(3):314-23.AJ

Abstract

PURPOSE

The aim of this study was to assess dental anchorage qualities when the pendulum appliance is used for distal molar movement.

MATERIAL

Thirty adolescents in various dentition stages received a modified pendulum appliance with a distal screw and a specially preactivated pendulum spring for bilateral molar distalization in the maxilla. The subjects were subcategorized into 3 groups of 10 according to the dental anchorage used: deciduous molars, premolars and deciduous molars, or only premolars. Dentoalveolar effects and side effects in the anchorage unit and in the molar area were determined by cephalometric analysis.

RESULTS

Statistical analysis of the measurements showed significant differences between groups in the extent of molar distalization and the resulting incisor protrusion. Distal tipping of the 6-year molars was significantly less severe (2.3 degrees +/- 1.58 degrees to the palatal plane and 2.55 degrees +/- 1.52 degrees to the anterior cranial base) in patients with premolar anchorage than in those with deciduous molar anchorage (6.15 degrees +/- 3.42 degrees and 6.35 degrees +/- 3.46 degrees). Incisor protrusion was significantly more pronounced in patients with deciduous molar anchorage (2.75 +/- 1.4 mm) than in the other 2 groups (1.65 +/- 0.82 mm, mixed deciduous molar and premolar anchorage, and 1.75 +/- 0.75 mm, premolar anchorage). Additionally, incisor protrusion was translatory compared with controlled tipping in subjects with deciduous molar anchorage or premolar and deciduous molar anchorage.

CONCLUSIONS

Deciduous molars and premolars can be used for anchorage for molar distalization with a pendulum appliance; however, anchorage with premolars only results in the least pronounced dentoalveolar side effects. The anchorage quality of deciduous molar and mixed deciduous molar/premolar anchorage is limited.

Authors+Show Affiliations

Department of Orthodontics, University of Aachen, Pauwelsstrasse 30, Aachen D-52074, Germany. GKinzinger@ukaachen.deNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Controlled Clinical Trial
Journal Article

Language

eng

PubMed ID

15775946

Citation

Kinzinger, Gero S M., et al. "Anchorage Quality of Deciduous Molars Versus Premolars for Molar Distalization With a 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. 127, no. 3, 2005, pp. 314-23.
Kinzinger GS, Gross U, Fritz UB, et al. Anchorage quality of deciduous molars versus premolars for molar distalization with a pendulum appliance. Am J Orthod Dentofacial Orthop. 2005;127(3):314-23.
Kinzinger, G. S., Gross, U., Fritz, U. B., & Diedrich, P. R. (2005). Anchorage quality of deciduous molars versus premolars for molar distalization with a 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, 127(3), 314-23.
Kinzinger GS, et al. Anchorage Quality of Deciduous Molars Versus Premolars for Molar Distalization With a Pendulum Appliance. Am J Orthod Dentofacial Orthop. 2005;127(3):314-23. PubMed PMID: 15775946.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Anchorage quality of deciduous molars versus premolars for molar distalization with a pendulum appliance. AU - Kinzinger,Gero S M, AU - Gross,Ulrich, AU - Fritz,Ulrike B, AU - Diedrich,Peter R, PY - 2005/3/19/pubmed PY - 2005/4/5/medline PY - 2005/3/19/entrez SP - 314 EP - 23 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 - 127 IS - 3 N2 - PURPOSE: The aim of this study was to assess dental anchorage qualities when the pendulum appliance is used for distal molar movement. MATERIAL: Thirty adolescents in various dentition stages received a modified pendulum appliance with a distal screw and a specially preactivated pendulum spring for bilateral molar distalization in the maxilla. The subjects were subcategorized into 3 groups of 10 according to the dental anchorage used: deciduous molars, premolars and deciduous molars, or only premolars. Dentoalveolar effects and side effects in the anchorage unit and in the molar area were determined by cephalometric analysis. RESULTS: Statistical analysis of the measurements showed significant differences between groups in the extent of molar distalization and the resulting incisor protrusion. Distal tipping of the 6-year molars was significantly less severe (2.3 degrees +/- 1.58 degrees to the palatal plane and 2.55 degrees +/- 1.52 degrees to the anterior cranial base) in patients with premolar anchorage than in those with deciduous molar anchorage (6.15 degrees +/- 3.42 degrees and 6.35 degrees +/- 3.46 degrees). Incisor protrusion was significantly more pronounced in patients with deciduous molar anchorage (2.75 +/- 1.4 mm) than in the other 2 groups (1.65 +/- 0.82 mm, mixed deciduous molar and premolar anchorage, and 1.75 +/- 0.75 mm, premolar anchorage). Additionally, incisor protrusion was translatory compared with controlled tipping in subjects with deciduous molar anchorage or premolar and deciduous molar anchorage. CONCLUSIONS: Deciduous molars and premolars can be used for anchorage for molar distalization with a pendulum appliance; however, anchorage with premolars only results in the least pronounced dentoalveolar side effects. The anchorage quality of deciduous molar and mixed deciduous molar/premolar anchorage is limited. SN - 0889-5406 UR - https://www.unboundmedicine.com/medline/citation/15775946/Anchorage_quality_of_deciduous_molars_versus_premolars_for_molar_distalization_with_a_pendulum_appliance_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889540604009199 DB - PRIME DP - Unbound Medicine ER -