Elia Sfeir et al. 2021. Alveolar Bone and Epithelial Attachment Status following Two Different Closed-eruption Surgical Techniques for Impacted Maxillary Central Incisors: A Recent Study. New Frontiers in Medicine and Medical Research Vol. 16. (Aug. 2021), 50–61. DOI:https://doi.org/10.9734/bpi/nfmmr/v16/4440F.