open access
메뉴
open access
메뉴
ISSN : 0376-4672
A Comparative Case Study of Maxillary Temporary Dentures Fabricated Using Two Digital Impression Techniques Ji-Han Kim, Jeong-Woo Yun, Su-Min Kim, Mee-Kyong Son, Yu-Ri Heo Department of Prosthodontics, School of Dentistry, Chosun University The loss of multiple teeth can lead to various issues such as impaired oral function, speech difficulties, and aesthetic concerns, significantly reducing a patient's quality of life. Prosthetic treatment is necessary to address these issues, and the specific treatment plan is determined based on the individual patient's condition. Temporary dentures are used to restore oral function and aesthetics until the final prosthesis is completed, helping patients recover from the functional and esthetic changes caused by tooth loss. Advances in digital technology have enabled the use of CAD-CAM in dental treatments, reducing the number of visits and improving the accuracy of denture fabrication. For the fabrication of the temporary denture in this case, impressions were acquired using two methods: intraoral scanning and a conventional impression method followed by model scanning. The teeth were arranged and the denture was designed using CAD software, and then fabricated using a 3D printer. This case report details the process of creating a temporary denture for a completely edentulous patient using digital technology, and the patient achieved a satisfactory functional and aesthetic outcome.
The presence of severe mandibular tori may render difficulty in the insertion and removal of denture. Therefore, removal of mandibular tori can be planned ahead if denture construction is considered. Piezography was introduced by Dr. Klein in 1974 to represent the neutral zone obtained through pronunciation, unlike the conventional method of acquiring the neutral zone using swallowing and masticatory movements. Utilization of pronunciation, it predominantly employs the horizontal forces of the muscles. Acquiring the neutral zone by pronunciation utilizing the horizontal movement of muscles has the advantage in denture stability which is affected by lateral forces. This allows for a harmonious denture design without interfering normal muscle movement. In edentulous patients, the neutral zone is influenced by bony prominences, hence the removal of such prominences may necessary during denture fabrication. The denture teeth arrangement using the neutral zone differs from the conventional denture arrangement in that it alters the actual range of motion of the tongue. Therefore, by fabricating dentures through piezography, which utilizes the horizontal forces of muscles, more stable dentures were produced, and this is being reported.
Intraosseous hemangioma is a rare benign vascular tumor, uncommon in the maxilla or mandible. Its variable radiographic appearance often complicates diagnosis, as it can mimic other conditions like periapical cysts. This report discusses a 26-year-old female misdiagnosed with a cyst, later revealed to have a vascular lesion after massive bleeding during surgery. Emergency embolization successfully controlled the hemorrhage, allowing safe resection. The case highlights the critical need for accurate differential diagnosis and preoperative planning, including embolization, to manage such lesions and avoid life-threatening complications.
Purpose: This study seeks to analyze the educational environments of the national dental schools in South Korea, Laos, and Vietnam to develop targeted educational support strategies for Laos and Vietnam. Materials and methods: The survey, using the DREEM specific to the healthcare field, was conducted online, with 97, 109, 215 dental students from a single national university in South Korea (SKU), Laos (LU), and Vietnam (VU), respectively. The data allowed us to compare students’ perceptions of the educational environment across the three institutions and analyze differences by gender, academic achievement, and year of study. Results: VU, LU, and SKU reported scores of 133.47, 129.66, and 104.23, respectively, all within the "more positive than negative" range (101.150 points). SKU scored lowest in the category of "students’ perception of learning" (mean score of 1.82), while VU and LU had the lowest scores in category of "students’ perceptions of atmosphere" (mean scores of 2.49 and 2.57, respectively) and "students’ social self-perceptions" (mean scores of 2.49 and 2.52, respectively). In contrast to SKU, VU and LU showed no differences between achievement groups, with male students scoring lower than female students in some DREEM categories. Conclusion: We expect that analyzing the educational environment from the beneficiaries’ perspective and developing strategies based on this analysis will provide practical support to dental schools in Laos and Vietnam.