Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
구강이학은 구강과 관련된 질병을 연구하는 의학의 한 분야입니다.gugangihak-eun gugang-gwa gwallyeon-doen jilbyeong-eul yeonguhaneun uihak-ui han bunya-imnida.Stomatology is a branch of medicine that studies diseases related to the oral cavity.