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측두하악관절에 발생한 활액연골종증과 골연골종의 CBCT 영상
서요섭,이근선,김진수,김재덕,Seo, Yo-Seob,Lee, Gun-Sun,Kim, Jin-Soo,Kim, Jae-Duk 대한영상치의학회 2010 Imaging Science in Dentistry Vol.40 No.1
Synovial chondromatosis is an uncommon disorder characterized by metaplastic formation of multiple cartilaginous and osteocartilaginous nodules within connective tissue of the synovial membrane of joints. Osteochondroma is a benign lesion of osseous and cartilagenous origin. It is frequently found in the general skeleton, but is rare in the mandibular condyle. We experienced 2 patients with abnormal appearance of temporomandibular joint. Histologic diagnoses were not obtained, because surgery was unwarranted in view of the lack of symptoms and the benign differential diagnosis. We describes 2 cases that show the characteristics of both disease simultaneously.
증후군이 없는 40대 환자에 발생한 양측성 함치성낭: 증례보고 및 문헌고찰
서요섭 ( Yo Seob Seo ),성건화 ( Kun Hwa Sung ),김진수 ( Jin Soo Kim ) 조선대학교 구강생물학연구소 2012 Oral Biology Research (Oral Biol Res) Vol.36 No.1
Dentigerous cysts, the most commonly occurring developmental cysts of the jaw, develop in association with impacted teeth. However, in the absence of a syndrome, occurrence of bilateral dentigerous cystsis rare;approximately 23 cases have been described in the literature. Development of bilateral dentigerous cysts after the fi fth decade is extremely rare. We report on a rare case of bilateral non-syndromic dentigerous cysts associated with both mandibular third molars of a 49 year-old man.
조사야에 따른 cone-beam computed tomography의 흡수선량 비교
서요섭 ( Yo Seob Seo ),김재덕 ( Jae Duk Kim ),김진수 ( Jin Soo Kim ) 조선대학교 치의학연구원 2013 Oral Biology Research (Oral Biol Res) Vol.37 No.1
To compare absorbed doses of cone-beam computed tomography (CBCT) according to field of view (FOV). Materials and Methods: To measure the absorbed doses of CBCT (Hitachi Medical Co.), we placed thermoluminescent dosimeter chips on both the submandibular and parotid glands, esophagus, tongue, and thyroid gland in a dental head phantom (CIRS). We used three image acquisition modes with FOV of different size: panoramic mode (P mode), implant mode (I mode), and dental mode (D mode). Two different dental mode scans were performed. One scanned the right upper molar region (D1), whereas the other scanned the left lower molar region (D2). Results: Average absorbed doses was lowest in D mode (average of D1 and D2, 4272.1 μGy) (p<0.05). Although the averages of absorbed doses between D1 and D2 showed no significant difference (p>0.05), the absorbed doses of esophagus (D1 756.9 μGy, D2 2938.2 μGy) and thyroid gland (D1 344.6 μGy, D2 880.1 μGy) were significantly different between D1 and D2. Conclusion: Since the average of absorbed doses was lowest with the smallest FOV, we must try to select the lowest FOV as possible when performing computed tomography, followed by careful diagnosis.
Cone-Beom Computed Tomogrophy(CBCT)를 이용한 Jacob diseose의 진단
서요섭 ( Yo Seob Seo ),유지원 ( Ji Won Ryu ) 조선대학교 치의학연구원 2010 Oral Biology Research (Oral Biol Res) Vol.34 No.1
Jacob disease is a rare condition consisting of new joint formation between the coronoid process of the mandible and the posterior aspect of the zygomatic arch. Jacob disease and coronoid elongation are both clinical features of coronoid hyperplasia. It is usually accompanied by limited mouth opening. The etiology and pathogenesis of coronoid hyperplasia and Jacob disease are unclear. This paper reports a case of a 25 year-old patient who presented limited mouth opening. Clinical examination and clinical interview were performed as well as panoramic, transcranial, Waters projection and cone-beam computed tomography (CBCT). Analysis of the CBCT confirmed the hypertrophy of the coronoid processes of the jaw, bilaterally and the new joint formation between the coronoid process and the posterior aspect of the zygomatic arch. Although the Jacob disease is a definitely uncommon, it can be found through careftil examination and proper radiographic study using CBCT.