Хронический периодонтит.

References 1. Ministry of Health and Social Development of the Republic of Kazakhstan of October 15, 2015 Protocol No. 12    • Лечение периодонтита   2. Borovsky, E. V. Therapeutic dentistry [Text] : textbook / E. V. Borovsky. - Almaty : Evero, 2014. - 576 p. : ill. 3. Nikolaev A.N. Tsepov L.M. Practical therapeutic dentistry.- St. Petersburg, 2001-P.390. 4. Propedeutic dentistry [Text] : textbook / ed.: E. A. Bazikian, O. Oh. Yanushevich. - 2nd ed., rev. and additional. - M. : GEOTAR-Media, 2016. - 638 s. : ill. - ISBN 978-5-9704-3617-2