“Levels of Salivary Cysteine in Periodontitis Patients With and Without Hopeless Teeth: Diagnostic Validity of the Assay”. Journal of Osseointegration 2, no. 1 (March 30, 2010): 24–27. Accessed January 29, 2026. https://www.journalofosseointegration.eu/jo/article/view/70.