Original ResearchPublished 11 September 2026Effect of the CO 2 laser on enamel surface roughness after debonding ceramic brackets and the application of nanohydroxyapatite: in-vitro studyA. Mar-Ramírez · L. E. Rodríguez Vilchis · R. J. Scougall-Vilchis · M. Nagayama · R. Contreras BulnesFrontiers in Dental Medicinedoi 10.3389/fdmed.2026.1912248