The aim of this study was to investigate radiographic features of osteosclerosis on digital panoramic radiographs. Osteoscleosis was diagnosed with its radiographic features of amorphous non- expansible radiopacity with unknown etiology. In diagosing osteosclerosis, differential diagnosis is needed from periapical cemental dysplasia, osteoma, benign cementoblastoma, and anatomic structures. Fifty-eight osteosclerosis on digital panoramic radiopgraphs from 46 patients with osteoscleosis were selected for this study. All of the osteosclerosis were found in the mandible. Among them, 53(91.4%) occurred on the posterior region. The mean diameter was 9.1㎜. The internal structure was radiopaque in 39(67.2%) and mixed radiolucent and radiopaque in 19(35.3%). There was no specific effect on the surrounding structures. In 16(27.6%), partial or complete radiolucent margin was noted which might be digital image artifact by enhancement.

Abstract
Ⅰ. INTRODUCTION
Ⅱ. MATERIALS and METHODS
    1. 연구대상
    2. 연구방법
Ⅲ. RESULTS
Ⅳ. DISCUSSION
REFERENCES

• 강지현(전남대학교 치의학전문대학원) | Ji-Hyun Kang (School of Dentistry, Chonnam National University)
• 송인자(광주여자대학교 간호학과) | In-Ja Song (Department of Nursing, Kwangju Women's University)
• 이재서(전남대학교 치의학전문대학원 영상치의학교실, 치의학연구소) | Jae-Seo Lee (Department of Oral and Maxillofacial Radiology, School of Dentistry, Dental Science Research Institute, Chonnam National University)
• 윤숙자(전남대학교 치의학전문대학원 영상치의학교실, 치의학연구소) | Suk-Ja Yoon (Department of Oral and Maxillofacial Radiology, School of Dentistry, Dental Science Research Institute, Chonnam National University) Corresponding author
• 유선열(전남대학교 치의학전문대학원 구강악안면외과학교실) | Sun-Youl Ryu (Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University)