Seoul National University · Dentistry
Professor Myung-Joo Kim's research lab specializes in biomaterials and dental implant technology, focusing on the development and evaluation of advanced polymers and metal alloys for orthopedic and dental applications. The lab investigates the mechanical behavior, surface properties, and biological responses of materials such as PEEK, titanium, and Co-Cr alloys, with an emphasis on fatigue resistance, osseointegration, and implant fit accuracy. Research also extends to the biological effects of natural extracts on liver injury, reflecting a multidisciplinary approach combining materials science, biomedical engineering, and pharmacology. The lab leverages cutting-edge fabrication techniques like laser sintering and CAD/CAM to advance digital dentistry and implant design.
Figures are computed from collected data and may differ slightly.
Abstract The poly‐ether‐ether‐ketone (PEEK) polymer is of great interest as an alternative to titanium in orthopedics because of its biocompatibility and low elastic modulus. This study evaluated the fatigue limits of PEEK and the effects of the low elastic modulus PEEK in relation to existing dental implants. Compressive loading tests were performed with glass fiber‐reinforced PEEK (GFR‐PEEK), carbon fiber‐reinforced PEEK (CFR‐PEEK), and titanium rods. Among these tests, GFR‐PEEK fatigue tests
The purpose of this study was to define the surface properties of prepared titanium (Ti) disks, which served as a model system, and to contrast the biologic response of MG63 cells exposed to Ti disks with different levels of surface roughness. The surface properties interact with each other, resulting in a change of other surface qualities in addition to roughness due to the surface roughening procedure. The machined Ti disks were roughened by sandblasting and electric glow discharging. The surf
Laser sintered technology has been introduced for clinical use and can be utilized more widely, accompanied by the digitalization of dentistry and the development of direct oral scanning devices. This study was performed with the aim of comparing the marginal accuracy and internal fit of Co-Cr alloy copings fabricated by casting, CAD/CAM (Computer-aided design/Computer-assisted manufacture) milled, and 3-D laser sintered techniques. A total of 36 Co-Cr alloy crown-copings were fabricated from an
Laparoscopic cornual resection is a feasible primary approach for the management of heterotopic cornual pregnancy.
We compared the effects of ethylacetate extracts from Artemisia iwayomogi (AIE) and Artemisia capillaris (ACE) on ethanol-induced hepatic injury in mice. Ethanol (25% v/v, 5 g/kg body weight) was orally administered once a day for 6 wk. AIE or ACE was provided in the diet (0.05 g/100 g diet). AIE and ACE did not affect hepatic alcohol dehydrogenase activity but did significantly inhibit cytochrome P450 2E1 activity. Hepatic acetaldehyde dehydrogenase 2 activity significantly increased in the AIE
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