搭配不同矯正器系統來矯正下顎前牙擁擠時之光彈分析法分析

Translated title of the contribution: Photoelastic Analysis for Lower Anterior Crowding Treatment with Different Bracket Systems

Research output: Contribution to journalArticle

Abstract

Dental crowding is a perplexing problem, mainly due to its unesthetics. Also its difficulty in maintaining oral hygiene may cause problems like periodontal disease and caries as well. Therefore, it is suite often the chief complaint of patient in daily orthodontic practice.
The recent development of orthodontic appliances like self-ligation brackets in combination of superelastic NiTi archwire helps to achieve initial phase of aligning teeth efficiently in light force. However, manufacturers only provide data of clinical result, and lack the discussion of stress distribution.
Photoelasticity has been used in analyzing force distribution for a long time. It produces different colored flanges that can be observed as the guide of stress distribution. In our experiment, several models are set with mal-aligned teeth and silicone index in the epoxy resin to simulate situation of lower anterior crowding. Different bracket systems, including conventional brackets and self-ligation brackets, with 0.014 inch NiTi wires are investigated for the acting effect on stress distribution. In result, we found that there was less stress distribution concentrated along the root surfaces when self-ligation brackets were used.
We concluded that self-ligation brackets can result in less force concentrated on the apical portion of the root. We think this study can provide another method of thinking in dealing with lower anterior crowding.
Original languageTraditional Chinese
Pages (from-to)26-31
Number of pages6
Journal中華民國齒顎矯正學雜誌
Volume20
Issue number3
Publication statusPublished - 2008

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Keywords

  • crowding
  • photoelastic

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