This dataset contains supplementary data for the article: Wuersching, S.N.; Moser, L.; Obermeier, K.T.; Kollmuss, M. Microleakage of Restorative Materials Used for Temporization of Endodontic Access Cavities. J. Clin. Med. 2023, 12, 4762. https://doi.org/10.3390/jcm12144762