Publications by authors named "You-yang Zheng"
[Comprehensive periodontal treatment of severe chronic periodontitis: a case report with four years follow-up].
Zhonghua Kou Qiang Yi Xue Za Zhi
February 2012
Objective: To investigate the significance of type IV collagen, metalloproteinase-2 (MMP-2), metalloproteinase-9 (MMP-9) and tissue inhibitor of metalloproteinase-1 (TIMP-1) expression in laryngeal squamous cell carcinomas (LSCCs).
Methods: Expression was quantified in 44 LSCC and 22 adjacent non-cancer normal tissues using a streptavidin-peroxidase conjugated immunohistochemistry and associations between the levels of the four proteins and clinicopathological characteristics in LSCC were analyzed.
Results: Significantly different expression of all four proteins was observed in LSCC and adjacent non-cancer normal tissues (P<0.
[Effects of surface potentials of tooth hard tissue on bone remodeling in rabbit tibiae].
Zhonghua Kou Qiang Yi Xue Za Zhi
July 2005
Article Synopsis
- This study explores how the electrical properties of tooth hard tissue influence bone remodeling in rabbits.
- Electrochemical measurements were taken from extracted human teeth, and teeth sections were implanted into the tibiae of 25 rabbits, which were observed over 8 weeks for bone regeneration differences.
- Results showed that the side of the tooth acting as a cathode (cementum) promoted new bone formation, while the anode side (enamel) caused bone resorption, indicating that tooth electrochemistry plays a crucial role in alveolar bone remodeling.