The document discusses the "butterfly effect" seen in dental roots during endodontic treatment. It defines the butterfly effect as a translucent, butterfly-shaped area of sclerotic dentin seen in roots, usually extending in a mesiodistal direction. The summary explains that sclerotic dentin forms as a protective mechanism but can weaken the tooth, and that roots displaying the butterfly effect may be more prone to fractures occurring buccolingually. The clinical implications are that the effect could improve root canal sealer penetration and outcomes.