Evolution and development of root canal preparation instruments
From the emergence of the first carbon steel root canal file to the widely used mechanical nickel-tita-nium root canal file today,root canal preparation instruments have undergone nearly 200 years of development.With the development of root canal treatment technology and the continuous advancement of materials science,root canal prepara-tion instruments have experienced numerous milestone innovations in both material selection and design concepts.This ar-ticle will systematically reviews the development history of root canal preparation instruments,especially for nickel-titani-um root canal file.Through continuous material optimization and technological improvement,its safety performance has been significantly improved,minimizing the risk of instrument fracture during root canal treatment.Meanwhile,the dual ap-proach of design innovation and material reinforcement has improved the cutting efficiency of nickel-titanium root canal files,further shortening treatment time and enhancing overall efficiency of treatment.Looking to the future,with the contin-uous emergence of new materials and technologies,root canal preparation instruments will continue to develop in a safer and more efficient direction.How to balance the relationship between the safety performance and cutting efficiency of root canal files will be the top priority of research and development work.
nickel-titanium endodontic filesroot canal preparationsafety performancecutting efficiencyevolution and development
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