Detachable retainers may be far better for higher enamel, since the decrease enamel may bite on an upper fastened retainer. This will make the retainer much less safe or hurt it. According to the American Association of Orthodontists (AAO), clipping a protruding archwire is only advised as a last resort. https://bookmarkproduct.com/story19086462/the-smart-trick-of-rectangular-steel-wire-that-no-one-is-discussing