[Evaluation of modified scene simulation teaching of endodontics in pre -clinical practice].

Purpose: To evaluate the effect of modified scene simulation teaching of endodontics in pre-clinical teaching.

Methods: Forty students were randomly divided into the experimental group and control group, there were 20 students in each group. Students in the experimental group were taught with modified scene simulation teaching method, while students in the control group were taught with traditional teaching method.

[Evaluation of nutrition risk and analysis of relative factors of patients with oral and maxillofacial cancer].

Purpose: To evaluate the potential nutrition risk and analyze relative factors in patients with oral and maxillofacial cancer, and explore the treatment method of nutrition risk.

Methods: Eighty eight patients with oral and maxillofacial cancer were included in the present study. Their age, height, weight, clinical classification, level of hemoglobin、albumin and prealbumin，present treatment were recorded and patients' body weight index (BMI) was calculated and scored based on a table of nutrition risk evaluation.

Establishment and characterization of a rabbit oral squamous cell carcinoma cell line as a model for in vivo studies.

The incidence of oral squamous cell carcinoma (SCC) is increasing but the long-term survival rate remains low. An animal model would therefore be helpful for evaluation of new treatment modalities for oral SCC. Hamster is small animal, therefore, the cancer of hamster cheek pouch is not optimal for tumor imaging.

Occult cervical lymph node metastases in 100 consecutive patients with cN0 tongue cancer.

Background: Squamous cell carcinoma (SCC) of the tongue is one of the most common cancers in the oral and maxillofacial region. To provide clinical evidence for selective neck dissection in management of cN0 patients by analyzing the characteristics and correlation of factors of occult cervical lymph node metastases (OCLNM) in patients with SCC of the tongue.

Methods: From 2002 to 2006, 100 consecutive patients with SCC of the tongue were reviewed by analyzing the characteristics of OCLNM, diameter of the tumor, T classifications, depth of invasion, forms of growth, pathological grade and degree of differentiation.