Sudden sensorineural hearing loss (SSHL) following a local anesthetic dental procedure.

Acute sensorineural hearing loss is an uncommon phenomenon in dentistry. We describe the case of a 79-year-old male who presented with acute sensorineural hearing loss occurring 2 days after a tooth extraction procedure under local anesthesia. Possible mechanisms are discussed.

CKIP-1 regulates the immunomodulatory function of mesenchymal stem cells.

Mesenchymal stem cells (MSCs) are self-renewing multipotent cells with immunoregulatory function, which makes them attractive candidates for regenerative medicine. However, the detailed mechanisms of their immunomodulatory capacity are not fully characterized. Here, we found that casein kinase 2 interacting protein-1 (CKIP-1) expression was induced in the murine MSC cell line C3H/10T1/2 by LPS.

HDAC6 regulates dental mesenchymal stem cells and osteoclast differentiation.

Background: Dental and periodontal tissue development is a complicated process involving a finely regulated network of communication among various cell types. Understanding the mechanisms involved in regulating dental mesenchymal stem cells (MSCs) and osteoclast cell differentiation is critical. However, it is still unclear whether histone deacetylase HDAC6 is involved in dental MSCs fate determination and osteoclast differentiation.

[MicroRNA-20a Promotes Osteogenic Differentiation of C3H/10T1/2 Cells through Regulating CKIP-1 Expression].

Objective: To investigate the effect of microRNA-20a(MiR-20a) on osteogenic differentiation of mouse C3H/10T1/2 cells and its regulatory mechanism.

Methods: Osteogenic differentiation of C3H/10T1/2 cells were identified by ALP staining and qRT-PCR. MiR-20a mimics and CKIP-1 siRNA were transfected into C3H/10T1/2 cells respectively with lipo3000.

Aging performances for resisting low-temperature of three dental Yttria-stabilized zirconia ceramic core materials.

Background: The low-temperature resistance aging performance of Yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) is the key effective factor that influences the long-term success rate of prosthesis. The objective of this study was to test and compare the aging performances for resisting low temperature of Lava Frame, Cercon Smart, and Upcera Yttria-stabilized zirconia core materials, via analyzing the micro and the crystal phases of the materials, and measure the three-point bending strength and the fracture toughness.

Methods: The three zirconia green bodies were prepared as 60 test samples for three-point bending strength and as 60 test samples for fracture toughness.

Posterolateral spinal fusion with nano-hydroxyapatite-collagen/PLA composite and autologous adipose-derived mesenchymal stem cells in a rabbit model.

Spinal fusion is routinely performed to treat low back pain caused by degeneration of intervertebral discs. An autologous bone graft derived from the iliac crest is the standard procedure used for spinal fusion. However, several shortcomings, including pseudarthrosis, pain and the need for blood transfusion are known to be associated with the procedure.

[Effect of right chewing-side preference on morphological temporomandibular joint changes].

Purpose: To explore the effect of right chewing-side preference on temporomandibular joint with cone-beam computed tomography (CBCT).

Methods: Fifty-two patients who were diagnosed as right chewing-side preference were selected and scanned by CBCT in the intercuspal position. The interested region was chosen to reconstruct and the images of bony structure of TMJ at axial view, coronal position, sagittal position, oblique position parallelled to the long axis of condyle and oblique position vertical to the long axis of condyle were evaluated.

[Experiment on inducing human periodontal ligament stem cells into adipose cells].

Objective: To explore the capability of human periodontal ligament stem cells (PDLSCs) differentiating into adipose cells in vitro and to determine their changes in cell morphology, structure and function during differentiation.

Methods: PDLSCs isolated by magnetic-activated cell selection were treated continuously with adipogenic medium for 21 d. Then the cell morphology, ultrastructure, adipose specific markers of low density lipoprotein (LPL) and peroxisome proliferator activated receptor-gamma (PPAR-gamma) were analyzed by inverted contrast microscope, trans mission electron microscope (TEM), flow cytometry, immunofluorescence, RT-PCR and Western blot, respectively.