The Measuring Block File Holder is an instrument used in root canal therapy for both accurate root canal length measurements as well as for storing instruments such as root canals, cementum tips, and moisture absorbing paper.

Root canal therapy is a treatment that cleans and seals the tooth by removing the infected pulp. The exact length of the root canal is critical to the success of the treatment, and the measuring block file holder can accurately measure the length of the root canal to ensure the effectiveness of the treatment.