Laboratory investigation of intra-tooth variability in microbial communities from clinically isolated root canal and filling material - Maxi Müller; Ann-Kathrin Weber; Christian Tennert; Lamprini Karygianni; Annette Wittmer; Kirstin Vach; Fabian Cieplik; Ali Al-Ahmad; Konstantin J. Scholz (Clinical Oral Investigations, 2026)