Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Someya Seiichiro,The Anatomical Study of the Frenum Observed on the Buccal Mucosa of Mandibular Second Molar and Posterior of Retromolar pad,The Journal of Clinical Dentistry,1346-8111,THE ACADEMY OF CLINICAL DENTISTRY,2008,28,1-2,14-20,https://cir.nii.ac.jp/crid/1390282680176100352,https://doi.org/10.14399/jacd1999.28.14