Ketut Sardita and Kusuma Bima Jati and Ira Widjiastuti (2015) Management of endodontic restorasi treatment failure in maxillary anterior teeth. In: Proceeding Book Seminar Ilmiah Nasional IKORGI II (SINI II) & COSMOS 2015. IKORGI, Surabaya, pp. 6-11. ISBN 978-602-1910-84-9

Muhamad Hary Taufiq and Ira Widjiastuti and Eric Priyo Prasetyo (2015) Perawatan endodontik gigi molar dengan perforasi bifurkasi. In: Proceeding Books Seminar Ilmiah Nasional IKORGI II (SINI II) & COSMOS. PP IKORGI, Surabaya, pp. 89-92. ISBN 978-602-1910-84-9

Hadriany Hotmaria and Ira Widjiastuti and Ari Subiyanto (2015) Koreksi protusif dalam bidang konservasi gigi. In: Proceeding Books Seminar Ilmiah Nasional IKORGI II (SINI II) & COSMOS. PP IKORGI, Surabaya, pp. 89-92. ISBN 978-602-1910-84-9