Clear Aligners - An Update

Abstract

Aesthetic demand and patients’ needs have been the priority for orthodontic treatment. With the introduction of Clear aligners in the market the aesthetic needs of the patients have been highly satisfied. Clear aligner fabrication has been evolving with technology since its introduction, indirectly printed aligners have been fabricated on 3D printed models for years now. Recently, directly printed aligners have been introduced in the market easing the fabrication process by eliminating the fabrication of 3D printed models and hence overcoming the shortcomings of the 3D printed thermoformed aligners. Various resins have been introduced since the introduction of the concept of directly printed aligners. This article covers the various resins available in the market and the literature regarding the same. Studies have been performed to understand the mechanical properties of these materials and it has been found that further refinements and improvements are required.