@article{turkan_ergin_erciyas_2026,  title={Periostin and TGFβ1 levels in the saliva and gingival fluid of periodontitis patients: a cross-sectional study},  volume={40},  ISSN={1806-8324},  url={https://doi.org/10.1590/1807-3107bor-2026.vol40.048},  DOI={10.1590/1807-3107bor-2026.vol40.048},  journal={Brazilian Oral Research},  publisher={Sociedade Brasileira de Pesquisa Odontológica - SBPqO},  author={TURKAN, Mehmet Akif and ERGIN, Mehmet Oguzhan and ERCIYAS, Kamile},  year={2026},  pages={e048} }