Korean J Orthod.  1994 Dec;24(4):969-982.

A photoelastic study of the stress distribution on the multiloop edgewise arch wire

Affiliations
  • 1Department of Orthodontics, College of Dentistry, Chonbuk National University, Korea.

Abstract

This study was designed to investigate the stress distribution, intensity and force mechanism derived from the MEAW by photoelastic stress analysis of the artificial teeth and surrounding bone composed of photoelastic(material/ PL-3 ). The findings of this study were as follows: 1. In case of no elastic on the MEAW with tip back, the moderate stress was observed on the molar and canine area, and the light stress was observed on the other area. 2. In case of the vertical elastic on the plain A.W. and the MEAW without tip back, the great stress was observed on the lateral incisor area, but on the MEAW with tip back, the moderate stress was observed on the anterior area and molar area. 3. In case of the C II elastic on plain A.W., the stress was concentrated on the anterior area hanged by elastic but on the MEAW without tip back, the stress was transmitted equally from the anterior area to the posterior teeth area, On the MEAW with tip back, the great stress was observed on the anterior and molar area. 4. In case of the C III elastic on the plain A.W., the stress was concentrated on the posterior area hanged by elastic but on the MEAW without tip back, the stress was transmitted equally from the posterior area to the anterior area. On the MEAW with tip back, the great stress was observed on the posterior area and the moderate stress was observed on the anterior area.

Keyword

MEAW; Photoelastic; Stress analysis

MeSH Terms

Incisor
Molar
Tooth
Tooth, Artificial
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