https://oak.chosun.ac.kr/handle/2020.oak/18959 2026-04-09T19:06:23Z 2026-04-09T19:06:23Z Sung-hyeon Choi Ji-hye Yoon Bin-na Lee Hoon-sang Chang In-nam Hwang Won-mann Oh Yun-chan Hwang https://oak.chosun.ac.kr/handle/2020.oak/19093 2024-04-30T02:15:16Z 2018-12-31T15:00:00Z

Title: Treatment of horizontal root-fractured maxillary incisors Author(s): Sung-hyeon Choi; Ji-hye Yoon; Bin-na Lee; Hoon-sang Chang; In-nam Hwang; Won-mann Oh; Yun-chan Hwang Abstract: Root fractures are defined as fractures that involve the dentin, cementum, and pulp, resulting in stretching or laceration of the pulp and/or periodontal ligament injury (rupture or compression). Two cases of horizontal root-fractured maxillary incisors are introduced in the present report. The first case is a middle third root-fractured maxillary incisor with root canal therapy in the coronal fragment, and the second case is a cervical third root-fractured maxillary incisor without root canal therapy. Both cases showed favorable results with a long-term follow-up period. In all traumatic injuries, early diagnosis and appropriate intervention dramatically enhance the outcome. The primary purpose of the treatment of root-fractured teeth is to maintain the vitality of the teeth. After an adequate observation period, if vitality control reveals non-vital pulp tissue, or if the patient complains of pain or discomfort in the tooth, endodontic therapy can be performed, usually to the coronal segment only.

2018-12-31T15:00:00Z Han-eol Choe Hyung-seok Kim Mee-kyoung Son Yu-ri Heo https://oak.chosun.ac.kr/handle/2020.oak/19091 2024-04-30T02:15:16Z 2018-12-31T15:00:00Z

Title: Artificial tooth selection and occlusion in complete dentures Author(s): Han-eol Choe; Hyung-seok Kim; Mee-kyoung Son; Yu-ri Heo Abstract: It is important to select artificial teeth and arrange them in a proper way especially when patients have severe alveolar ridge resorption or abnormal intermaxillary relation. The purpose of this study is to suggest the criteria for decision making in several clinical cases regarding the type of artificial teeth and concept of occlusion. Several types of artificial teeth are nowadays available. Anatomic tooth, which mimics the cusps and grooves of the nature tooth, is widely used in most cases. But in cases of severe alveolar bone loss or in cases where it is difficult to induce centric occlusion, artificial tooth with nonanatomic and semianatomic cusps could be a better choice. The occlusion scheme is also determined regarding whether to arrange teeth in lingual occlusion or crossbite considering the intermaxillary relation and severity of alveolar ridge resorption.

2018-12-31T15:00:00Z Jeong-hye An Ji-hye Jung Hye-won Cho https://oak.chosun.ac.kr/handle/2020.oak/19092 2024-04-30T02:15:16Z 2018-12-31T15:00:00Z

Title: Complete mouth rehabilitation with zirconia fixed partial dentures supported by natural teeth and implants: A case report Author(s): Jeong-hye An; Ji-hye Jung; Hye-won Cho Abstract: When a maxillary implant-supported fixed prosthesis is planned for anterior partially edentulous region, the degree of atrophy of the residual ridge, prospective location of the implants and inclination of the implant axis, soft tissue volume dimensions, esthetics, and phonetics of the patient should be considered. The signs of osteoarthritis and deviation in form on the left condyle head were found in the temporomandibular joint radiogram of the patient reported herein due to her habit of unilateral chewing for 20 years. Furthermore, the patient had loss of left mandibular posterior teeth, an unequal occlusal plane, extruded and rotated mandibular anterior teeth, a high smile line, and high expectations. This report describes the treatment procedure for establishing occlusal plane, physiologic occlusion with stabilized posterior tooth contact and anterior guidance, and equilibration in centric relation-maximum intercuspation discrepancy using zirconia restorations with a computer-aided design/computer-aided manufacturing system in an adapted centric posture.

2018-12-31T15:00:00Z Sung-kwon Choi Kyung-hwa Kang https://oak.chosun.ac.kr/handle/2020.oak/19090 2024-04-30T02:15:16Z 2018-12-31T15:00:00Z

Title: Factors contributing to the perception of facial asymmetry in dentists and laypersons Author(s): Sung-kwon Choi; Kyung-hwa Kang Abstract: The aims of this study were to find differences in how dentists and laypersons evaluate facial asymmetry and to identify factors contributing to the perception of asymmetry. Photographs of young male and female faces were transformed according to lower facial height, lower facial width, the direction of chin deviation, and the angle of chin deviation. Thirty dentists (mean age, 28.0 years; 16 males, 14 females) and 50 laypersons (mean age, 22.2 years; 24 males, 26 females) answered a questionnaire evaluating the asymmetry in 24 photographs (12 males and 12 females) using visual analog scale. The individual t-test and logistic regression analysis were used for statistical analysis. There was no difference between dentists and laypersons in evaluating photographs with a 5° chin deviation angle. Compared with laypersons, dentists evaluated photographs with 10° chin deviation angle as more asymmetric. Faces with a long lower facial height, left deviation of the chin, and a large chin deviation angle were considered to be more asymmetric than those with normal lower facial height, right deviation of the chin, and a small chin deviation angle, respectively (p<0.05). There was no consistent relationship between lower facial width and the perception of facial asymmetry in both the groups. The perception of facial asymmetry was affected by lower facial height, the direction of chin deviation, and the amount of chin deviation.

2018-12-31T15:00:00Z