This report presents the case of severe tooth wear and vertical dimension loss in a 71-year-old male patient. A combined conventional and digital approach was employed for full-mouth rehabilitation. After determining an increase in the vertical dimension of 5.5 mm using an anterior jig and diagnostic wax-up, provisional restorations were fabricated and adjusted throughout the adaptation period.For the fabrication of the final prosthesis, digital methodologies such as oral scanning and occlusal acquisition were performed. To obtain precise margin data, a die model was fabricated using the traditional impression method, followed by model scanning, which was then combined with intraoral scan data. The final prosthesis was made of zirconia to enhance esthetics and strength. Consequently, the treatment enhanced both function and esthetics, leading to high patient satisfaction with the outcomes.

This study evaluated the long-term stability and efficacy of occlusion achieved by setting a normalized chewing position as the therapeutic position in patients with abnormal chewing positions due to tooth loss or malocclusion. Furthermore, the study monitored the recovery rate of the stomatognathic system. Sixteen patients undergoing oral functional rehabilitation participated in the study, utilizing an intraoral Gothic arch tracer to normalize abnormal chewing positions and designate the apex of the resultant chewing patterns as the therapeutic position. The first set of data was gathered during occlusal reconstruction at the point when a therapeutic position was necessary, and the second set was collected approximately 10 years later under the same conditions. Four mandibular movements—chewing movements for hard food (CM-H), chewing movements for soft food (CM-S), border movement (BM), and maximum intercuspation position (MICP)—were compared to assess the long-term stability between the chewing position and occlusion and the recovery rate of the stomatognathic system. The findings showed a 63% concordance between CM-H and MICP, confirming the long-term stability of both the chewing position and occlusion. Furthermore, the concordance between CM-H and CM-S increased by 13%, whereas the alignment between the chewing position and BM increased by 25%. In summary, the concordance across all four movements improved by 19%, demonstrating increased long-term recovery rate of the stomatognathic system. These findings provide clinical evidence that occlusal reconstruction centered on the chewing position offers long-term stability and recovery. By establishing an efficient occlusion that harmonized with the chewing patterns, this approach compensates for age-related declines in chewing function and helps maintain the stomatognathic system health.

The shape of the maxillary anterior teeth is an essential factor in esthetics because this region is prominently exposed during conversations and smiles, significantly influencing one’s impression. Moreover, the form and color of the gingiva in the anterior teeth play a vital role in determining esthetics. Therefore, various factors should be considered when improving the esthetics of the maxillary anterior teeth. This report is aimed at introducing the use of digital devices and software to analyze various factors, determining the amount of gingival and alveolar bone resection in a patient with esthetically unpleasing maxillary anterior teeth due to a gummy smile or gingival asymmetry. Furthermore, this study describes the method for creating a digital surgical guide using CAD software for esthetic crown lengthening and reports on the achieved esthetic improvements.

This manuscript represents the official position of the Korean Society of Echocardiography on valvular heart diseases.This position paper focuses on the clinical management of valvular heart diseases with reference to the guidelines recently published by the American College of Cardiology/American Heart Association and the European Society of Cardiology. The committee tried to reflect the recently published results on the topic of valvular heart diseases and Korean data by a systematic literature search based on validity and relevance. In part I of this article, we will review and discuss the current position of aortic valve disease in Korea.

This manuscript represents the official position of the Korean Society of Echocardiography on valvular heart diseases.This position paper focuses on the diagnosis and management of valvular heart diseases with referring to the guide‑ lines recently published by the American College of Cardiology/American Heart Association and the European Society of Cardiology. The committee sought to reflect national data on the topic of valvular heart diseases published to date through a systematic literature search based on validity and relevance. In the part II of this article, we intend to pre‑ sent recommendations for diagnosis and treatment of mitral valve disease and tricuspid valve disease.

PURPOSE: The purpose of this study is to compare the antibacterial activity of currently purchasable denture cleansers against Candida albicans. Materials and methods: This study used tablet-type denture cleansers, PolidentⓇ , CoolingdentⓇ and FittydentⓇ , along with liquid denture cleansers, HexamedineⓇ , ListerineⓇ and Apple vinegarⓇ . The antibacterial activities of denture cleansers were evaluated based on the number of C. albicans and concentrations of the denture cleansers. Results: In the 0.5 × 106 cfu/㎖ culture medium, the C. albicans’ death rate of PolidentⓇ was significantly lower than those of FittydentⓇ , HexamedineⓇ , ListerineⓇ , and Apple vinegarⓇ (P <.05). In the 0.5 × 107 cfu/, the C. albicans’ death rates of PolidentⓇ and CoolingdentⓇ were significantly lower than those of FittydentⓇ , HexamedineⓇ , ListerineⓇ and Apple vinegarⓇ (P <.05). The C. albicans’ death rates of PolidentⓇ and CoolingdentⓇ were significantly decreased at 0.02 g and 0.01 g. The C. albicans’ death rate of FittydentⓇ was significantly decreased at 0.005 g (P <.05). The C. albicans’ death rate of HexamedineⓇ was significantly decreased at 1/16 dilution. The C. albicans’ death rate of ListerineⓇ was decreased at 1/8 dilution, and the antibacterial activity of Apple vinegarⓇ was decreased at 1/4 dilution (P<.05). Conclusion As the number of C. albicans increased, the antibacterial activities of the denture cleansers decrease. In the tablet-type denture cleanser, all denture cleansers showed 100% C. albicans’ death rate when used at a dose of 1 tablet. One denture cleanser showed the same antibacterial effect with only 1/3 of a tablet. In the liquid type denture cleanser, the level of dilution required was different for each denture cleanser.