Abstract: A dental light curing device includes a first shell segment, a second shell segment coupled with the first shell segment to jointly define an installation space, and a light emitting module and a duty module located in the installation space. The first shell segment and the second shell segment have respectively a first confining rib and a second confining rib to divide the installation space into a first zone and a second zone. The light emitting module is located in the second zone to form electric connection with the duty module and be controlled to generate a curing light. The light emitting module includes a primary heat sink, a secondary heat sink located on the primary heat sink and a light emitting chip located on the secondary heat sink. The primary heat sink is hollow and includes a cooling passage and a cooling fan located in the cooling passage.

Abstract: A full HD transmission oral cavity photographic apparatus comprises a photographic portion and a grip portion. The photographic portion includes an image sensor to capture a full HD image and a light source. The grip portion includes a control circuit electrically connected to the image sensor and a transmission interface electrically connected to the control circuit. The transmission interface includes a Wi-Fi Peer-to-Peer transmission module which can transmit the full HD image via Wi-Fi Peer-to-Peer transmission to a display device for displaying.

Abstract: A method of manufacturing biodegradable materials for filling nasal cavity of the present invention comprises the following steps: a. within a predetermined temperature range, evenly mixing chitosan and the substrate (starch or cellulose) to make a first solution; b. adding crosslinking agent in the first solution for crosslinking reaction; c. pouring the first solution into the mold; d. removing water through freeze-drying process, thereby the biodegradable materials for filling nasal cavity are obtained. The biodegradable materials are filled in patient's nasal cavity to stop bleeding and avoid a second time injury by removing, because of biodegradable absorption.

Abstract: A full HD transmission oral cavity photographic apparatus comprises a photographic portion and a grip portion. The photographic portion includes an image sensor to capture a full HD image and a light source. The grip portion includes a control circuit electrically connected to the image sensor and a transmission interface electrically connected to the control circuit. The transmission interface includes a Wi-Fi Peer-to-Peer transmission module which can transmit the full HD image via Wi-Fi Peer-to-Peer transmission to a display device for displaying.