Histological changes in the maxillary sinus membrane after sinus membrane elevation and the simultaneous insertion of dental implants without the use of grafting materials

¹Professor, Department of Oral & Maxillofacial Surgery, College of Dentistry, Yonsei University, Seoul, ²Graduate Student, Department of Dentistry, Wonju College of Medicine, Yonsei University, Wonju, ³Research Assistant, Department of Dentistry, Wonju College of Medicine, Yonsei University, Wonju, ⁴Assistant Professor, Department of Dentistry, Wonju College of Medicine, Yonsei University, Wonju