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A female narrow-ridged finless porpoise (Neophocaena asiaeorientalis) stranded on a beach on Jeju Island showed epithelial proliferative skin lesions on its body. Two false killer whales (Pseudorca crassidens), caught using nets near Gangneung and Samcheok, respectively, had multiple plaques on their penile epidermis. Histological examination of the epidermis revealed that all the lesions had common features, including accentuated rete pegs, ballooning changes, and eosinophilic intranuclear inclusion (INI) bodies. Based on the histopathological results, herpesvirus infection was suspected, and thus further analysis was conducted using herpesvirus-specific primers. Based on nested polymerase chain reaction (PCR) tests using the herpesvirus-detectable primers, the PCR products demonstrated two fragments: a 222-base-pair (bp) sequence of the DNA polymerase gene, SNUABM_CeHV01, showing 96.4% identity with a bottlenose dolphin herpesvirus from the Jeju narrow-ridged finless porpoise; and a 222 bp sequence of the DNA polymerase gene, SNUABM_CeHV02, showing 95.95% identity with the same bottlenose dolphin herpesvirus from the Gangneung and Samcheok false killer whales. The significance of this study lies in its ability to demonstrate the existence of novel cetacean herpesviruses in South Korean seawater, representing an important step forward in studying potentially harmful pathogens that affect endangered whale and dolphin populations. [ABSTRACT FROM AUTHOR]

The tensile bond strength (TBS) of four CAD/CAM ceramic blocks and one composite resin bonded to a veneering ceramic was evaluated. Prior to silanisation, the surfaces were etched with hydrofluoric acid. A resin cement was sandwiched (50 μm thickness/2.5 mm diameter) between the CAD/CAM ceramic rod and the veneering ceramic. A composite resin (Filtek Z250) (control) was directly bonded to the veneering ceramic. All the bonded specimens were stored in water at 37°C for 24 h, and then half of them were additionally thermocycled prior to a TBS test. The CAD/CAM groups exhibited significantly higher TBS values and significantly higher or statistically similar Weibull moduli compared with those of the control group. Neither the TBS values nor the Weibull moduli were significantly altered by thermocycling. This study suggests that fractured veneers are more effectively repaired by CAD/CAM ceramic restorations and resin cement than direct intraoral repair in terms of TBS. [ABSTRACT FROM AUTHOR]