https://oak.chosun.ac.kr/handle/2020.oak/18946 2026-04-09T18:07:47Z https://oak.chosun.ac.kr/handle/2020.oak/19027 Title: Dental students’ self-assessment of their performance in a preclinical endodontic practice Author(s): Soo-jeong Hwang; Seok-ryun Lee; Min-seock Seo Abstract: Dental education consists of both theoretical and practical learning for students. When dental students encounter practical courses as a new educational experience, they must also learn to evaluate themselves. The aim of this study was to investigate the self-assessment scores of third year dental students and compare with the scores graded by the faculty in preclinical endodontic practice in a dental school in Korea. Faculty- and student-assigned scores were calculated from preclinical endodontic practice performed on phantom patients. The students were formally instructed on grading procedures for endodontic treatment. After each step, each item was assessed by the student. The students’ self-assessment score was then compared to the score by the faculty. The students were divided into 4 groups by analyzing the scores of self-assessment and faculty-assessment, and statistically analyzed by summing the theoretical and practical examination scores. In the theoretical exam score, the group who over-estimated their performance (H group) was lower than the group with lower evaluation (L group). When comparing the first and last score determined by the faculty, H groups didn’t show any improvement, while the other group did. In H group, the less improvement of the self-assessment, the higher the theoretical exam score. In L group, the higher improvement of the self-assessment, the better the theoretical exam score. The results point to the need to develop students’ self-insight with more exercises and practical training. 2016-12-31T15:00:00Z https://oak.chosun.ac.kr/handle/2020.oak/19025 Title: Course of buccal nerve on the anterior border of mandibular ramus related to temporalis tendon Author(s): Heung-joong Kim; Byung Soo Park; Yonghwa Cho; Sun-kyoung Yu Abstract: The purpose of this study was to examine the course of the buccal nerve on the anterior border of mandibular ramus in relation to superficial and deep tendons of the temporalis muscle. Distance was measured from the lingula level to each of the two points where the buccal nerve crosses over the deep tendon on the lingual side and the superficial tendon on the buccal side. The buccal nerve crossed over the deep tendon at approximately 2.4 cm above the lingula level and descended infero-laterally over the superficial tendon at approximately 0.2 cm above the lingula level towards the buccal side. In a dentulous adult, lingula is located approximately 1 cm above the occlusal plane. Therefore, when making incisions on the mandibular ramus beyond the occlusal plane, clinicians must be careful because the buccal nerve and temporalis tendons can be damaged. 2016-12-31T15:00:00Z https://oak.chosun.ac.kr/handle/2020.oak/19028 Title: Application of neutral zone concept in order to improve denture stability in a patient with hemifacial spasm : a case report Author(s): Nuri Seo; Bo-young Ma; Hyun-pil Lim; Chan Park; Kwi-dug Yun Abstract: Hemifacial spasm is characterized by symptoms of intermittent, irregular and involuntary movements (“twitching”) affecting the facial muscles that are controlled by the facial nerves unilaterally - affecting one side of the face only. The demographics of this neurologic problem indicates incidence far more common in females than males, and it is usually seen in the fifth decade of life, or later. Edentulous patients with involuntary movements of facial muscles (such as hemifacial spasm) could encounter difficulties in maintaining the stability of their dentures. Not only would the proper and effective occlusion of thedentures be adversely affected, the harmony and compatibility with surrounding tissues (critical factors to be considered in any effort to fabricate a stable set of dentures) could be significantly degraded. This case report will therefore present and advance the concept of fabrication of complete - and completely stable and wellfitting - dentures incorporating the concept of Neutral Zone. 2016-12-31T15:00:00Z https://oak.chosun.ac.kr/handle/2020.oak/19026 Title: Error analysis of 3D printing surgical guide according to tooth position Author(s): Junyoun Lee; Minho Yoon; Taeseok Park; Inkon Chun; Kwidug Yun Abstract: The purpose of this study is to evaluate the accuracy of digital surgical guide according to implant position. Dentiform with D2 bone density, which has a #15, 16, 17, 24, 25, 26, 34, 35, 36, 45, 46, 47 edentulous space, is fabricated. Model scanning and cone beam computed tomography (CBCT) data was taken and overlapped using In2Guide software, and the implants were planned. The digital surgical guide was fabricated using 3D printing and the implants were installed using the surgical stent. CBCT were retaken after the implants were installed, and the “before” surgery and “after” surgery CBCTs were overlapped. Then, the degree differences and length differences at implant shoulder and tip area were statistically analysed. The mesial implant of the tooth-supported type showed 1.06±0.53°, 0.29±0.19 mm, 0.39±0.24 mm, the middle implant showed 1.36±0.67°, 0.40±0.15 mm, 0.42±0.23 mm and the distal implant showed 1.39±0.69°, 0.59±0.29 mm, 0.67±0.41 mm respectively. The mesial implant of the tissue-supported type showed 1.76±0.83°, 0.57±0.29 mm, 0.88±0.31 mm, the middle implant showed 2.15±0.65°, 0.69±0.25 mm, 1.08±0.28 mm. and the distal implant showed 2.83±1.17°, 1.09±0.50 mm, 1.34±0.45 mm. The greater the proximity of the implant to the mesial side, the smaller the error. 2016-12-31T15:00:00Z