人工合成多分子矯正彈性橡皮鏈之文獻回顧

彈性橡皮鏈自1960 年代引進牙科治療起，逐漸成矯正治療中重要一環。藉由橡皮鏈所產生連續且輕的力量，可應用於犬齒後退、關閉齒列空間、矯正旋轉牙齒及縮小牙等等。其優點在於便宜、使用方便、相對性清潔，同時不需病人配合，然其缺點，如暴露口腔環境中，會吸收口中水分及染色，造成內部化學鍵結破壞而產生永久性變形，同時逐漸喪失彈力，影響矯正醫師對牙齒施力的精確判斷。過去關於彈性橡皮鏈的研究文獻相當多，但因各篇使用研究方法及材料有極大差異，同時無法取得製造產品的詳細資訊，因此無法做出有效比較。本篇回顧將整理並討論：彈性橡皮鏈力量的傳導與降解、預拉的影響、環境及及其它因子，以協助矯正醫師對矯正用橡皮鏈有更深入的瞭解。

關鍵字

彈性橡皮鏈；齒額矯正

並列摘要

Elastomeric chains were introduced to the orthodontic profession in the 1960s', and are now an integral part of every day practices. They are used to generate light continuous forces for correcting rotations, consolidating spaces, and retraction canines. They are inexpensive, easily applied, relatively hygienic and require little or no patient cooperation. Elastomeric chain, however, are nor without their disadvantages. When exposed to an oral environment, they absorb water and saliva, permanent stain, and suffer breakdown of internal binds leading to permanent deformation. They also experience rapid loss of force due to stress relaxation, resulting in a gradual loss of effectiveness. This loss of force make it difficult for orthodontists to determine the actual force transmitted to the dentition.There has been extensive body of literature regarding the properties of elastomeric chains, but they are difficult to evaluated because of the variable nature of the investigate material and methods. In this review article, we strive to summarize some of the most important literatures concerning the force delivery and degradation properties, the effects of prestretching, the influence of changing environment and miscellaneous information to help orthodontists get better understand of elastomeric chains.

並列關鍵字

elastomeric chains ； orthodontics

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人工合成多分子矯正彈性橡皮鏈之文獻回顧

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