[A clinical retrospective analysis of dental implants replaced in previously failed sites].

Purpose: To evaluate the clinical outcomes as well as related factors of dental implants replaced in previously failed sites.

Methods: A total of 12 patients (15 implants) who received replacement in previously failed sites during January 2005 to December 2011 were included. Outcomes of redo-implants were collected and clinical data was recorded and analyzed regarding risk factors related to redo-implants' survival using SPSS13.

[An assessment of different crown-to-implant ratio for implant teeth in the posterior region over 5 years].

Purpose: To evaluate the influence of crown-to-implant ratio (C/I ratio) on the results of restoration in the posterior region.

Methods: From January 2007 to January 2012,119 patients with 208 ITI implants in the posterior region were followed up for 6-66 months. Implant restorations were divided into three groups according to their respective clinical C/I ratios after noble porcelain-fused-to-mental crown restoration: C/I ≤1,1 View Article and Find Full Text PDF

[The antibacterial properties of Ca and Zn-containing coatings prepared with micro-arc oxidation].

Purpose: To prepare Ca and Zn-containing coatings using micro-arc oxidation on pure titanium surface and to investigate the coatings effect on S.mutans adhesion and morphology.

Methods: Five groups including low Ca-containing (L-Ca), high Ca-containing (H-Ca), low Zn-containing (L-Zn), medium Zn-containing (M-Zn), high Zn-containing (H-Zn) were prepared with micro-arc oxidation on titanium surface and machined commercial pure titanium (CP) was used as control group.

Free posterior tibial artery perforator flap for floor of mouth reconstruction: a case report.

In this report, we present a case with floor of mouth squamous cell carcinoma who underwent wide excision of tumor, a marginal mandibulectomy and bilateral selective neck dissections. A 7 cm × 4 cm fasciocutaneous flap based on a posterior tibial artery perforator (PTAP) from the left posterior leg was harvested to reconstruct a floor of the mouth defect. The donor-site defect was closed primarily.

[Preoperative Doppler evaluation of vascular perforators in the anterolateral thigh flap harvest].

Objective: To evaluate the accuracy of Hadeco ES-1000spm hand-held doppler during the anterolateral thigh (ALT) flap harvest.

Methods: Twenty-five patients (26 sides) with ALT flaps for head and neck reconstruction between May 2005 and May 2010 received preoperative Doppler examination for the location of the cutaneous perforators of ALT flaps. The Doppler signals and body mass index (BMI) were recorded preoperatively according to ABC system.

The chemokine receptor 7 regulates cell adhesion and migration via beta1 integrin in metastatic squamous cell carcinoma of the head and neck.

Migration and adhesion of tumor cells are essential prerequisites for the formation of metastases in malignant diseases. Chemokine receptor 7 (CCR7) has been shown to regulate integrin which can then facilitate adhesion of cancer cells to and/or migration through the extracellular matrix (ECM). In order to identify the connection between CCR7 and beta1 integrin, and the influence on cell adhesion and migration in metastatic squamous cell carcinoma of the head and neck (SCCHN).

[Functional reconstruction of total lower lip defect with mental neurovascular V-Y advancement island flap.].

Objective: To introduce a method of functional reconstruction for total lower lip defects.

Methods: Six patients with lower lip cancer were treated by surgery from November 2007 to February 2009. The full thickness defects with a size from eighty percent to total lower lip were reconstructed with two triangular mental neurovascular island flaps of chin.

[Expression of Livin mRNA and protein in human oral squamous cell carcinoma].

Purpose: To investigate the expression of the newly found inhibitor of apoptosis protein Livinalpha and Livinbeta and their gene expression in human oral squamous cell carcinoma.

Methods: Twenty specimens of human squamous cell carcinoma(SCC), 15 cases of benign cysts, 10 cases of normal oral mucosal tissues adjacent to the cancerous lesions were examined. Polymerase chain reaction with reverse transcription (RT-PCR) and Western blot analysed were used to detect mRNA and protein expression of Livin, respectively.

[The expression of M-phase promoting factor in salivary adenoid cystic carcinoma].

Purpose: To study the expression and clinical significance of M-phase promoting factor (MPF) in salivary adenoid cystic carcinoma (SACC).

Methods: The expression of MPF was investigated in 40 salivary adenoid cystic carcinomas and 40 normal salivary tissues by immunohistochemistry. The expression of MPF was detected in SACC-83 and SACC-LM with Western blot.

[The expression and activity of protein kinase A I in oral squamous cell carcinoma].

Purpose: To detect the expression and distribution of protein kinase A I (PKA I) in oral squamous cell carcinoma as well as its clinicalpathological significance.

Methods: The expression of PKA I was investigated in 40 oral squamous cell carcinomas and 15 normal tissues by immunohistochemistry. The activity of PKAI was detected in 20 human oral squamous cell carcinomas and adjacent normal tissues with Western blot.