Cytotoxicity of three commercial orthodontic elastomeric ligature brandsPeerapong Tua-ngam, Nittaya Jira-anankul, Niwat Anuwongnukroh, Surachai Dechkunakorn and Pasaree LaokijcharoenMATEC Web Conf., 108 (2017) 06004DOI: https://doi.org/10.1051/matecconf/201710806004