[Effect of bone grafting on the repair of distal alveolar bone defect of the second molar after extraction of mandibular impacted third molar].

Purpose: To observe the effect of bone grafting during the extraction of mandibular third molar on repair of distal alveolar bone defect distal to the second molar.

Methods: The risks of the distal alveolar bone defect in the second molar were estimated after removal of the impacted teeth according to the position of the third molar and second molar before operation. It was divided into three groups: low risk group, medium risk group and high risk group.

[Clinical evaluation of simple maxillary sinus elevation with simultaneous implant in patients with serious posterior maxillary deficiency].

Purpose: To evaluate the clinical effect of simple osteotome sinus floor elevation without bone grafting in the posterior maxilla area with less bone height.

Methods: Twenty eight cases with posterior maxillary bone deficiency were included.Their residual alveolar bone height (RBH) was less than 7 mm.

[Cone-beam CT evaluation of volume and surface area changes of impacted upper central incisors before and after orthodontic treatment].

Purpose: The purpose of this study was to quantitatively evaluate root resorption by cone-beam computer tomography (CBCT) after orthodontic treatment of impacted upper central incisors.

Methods: Ten patients (12 impacted incisors and 8 contralateral corresponding teeth) were included in this study. With self-designed modified nance arch and straight wire arch, the impacted incisors were treated by combined orthodontics and surgery approach.

Correlation between periodontal disease and oral cancer risk: A meta-analysis.

Objective: The purpose of this study is to investigate the correlation between periodontal disease and oral cancer risk by meta-analysis.

Methods: We searched the electronic databases of PubMed and Wanfang to include the articles related to periodontal disease and oral cancer risk. The association between periodontal disease and oral cancer risk was assessed by odds ratio (OR) and its corresponding 95% confidence interval (95% CI).

[Application of research-based learning for bachelor intern students of stomatology].

Purpose: To apply research-based learning in education of bachelor intern students of stomatology and evaluate its role in promoting the comprehensive quality of the students.

Methods: Sixty students from grade 2007 and 2008 in school of stomatology, Wenzhou Medical University were enrolled in this study. Thirty of them were randomly selected into a group for research-based learning, while the others were taught with traditional teaching mode.

Effects of huangqi and bear bile on recurrent parotitis in children: a new clinical approach.

Objective: To evaluate the pharmacological effects of traditional Chinese medicine, bear bile capsule and Huangqi granule, on recurrent parotitis in children.

Methods: In this prospective, controlled, and randomized study, a total of 151 young children were divided into three groups: Group A included massaging the children's parotid region and melting vitamin C in their mouth daily; Group B included swallowing bear bile capsule and Huangqi granule daily; and Group C included massages and vitamin C as prescribed in Group A, and traditional Chinese medicine as prescribed in Group B. Children were treated individually for one month and then a follow-up study was conducted for 1 to 3.