[Application of metronidazole combined with minocycline in reducing infection after dental implant in patients with localized periodontitis].

Purpose: To explore the value of metronidazole combined with minocycline in reducing infection after dental implant in patients with localized periodontitis.

Methods: A total of 120 patients with localized periodontitis who underwent dental implantation in the Department of Stomatological, Shanghai Pudong New Area People's Hospital from August 2021 to September 2022 were selected. According to the way of postoperative infection prevention, the patients were divided into control group and experimental group, with 60 patients in each group.

[Effect of oral implant restoration on dentition defect patients and its impact on TNF-α and IL-6 levels in gingival crevicular fluid].

Purpose: To investigate the clinical effects of oral implant restoration in patients with dentition defects and the its impact on tumor necrosis factor-α(TNF-α) and interleukin-6(IL-6) levels in gingival crevicular fluid.

Methods: Eighty-four patients with dentition defects from May 2017 to August 1919 in People's Hospital of Shanghai Pudong District were enrolled and randomly divided into control group (n=42) and experimental group (n=42). Patients in the control group were repaired by routine methods,while those in the experimental group were treated with oral implant restoration.

[Study of condyle movement in Angle Class Ⅲ malocclusion with temporomandibular dysfunctions].

Purpose: Subjects with normal occlusion, Angle Class Ⅲ malocclusion and Angle Class Ⅲ malocclusion with temporomandibular dysfunctions(TMD) were included, and their protraction and retraction, opening and closing mouth were recorded and compared to determine the condyle movement characteristics of Angle Class Ⅲ malocclusion patients with TMD.

Methods: Thirty cases of Angle Class Ⅲ malocclusion with TMD (experimental group), 30 cases of simple Angle Class Ⅲ malocclusion (control group 1) and 30 cases of normal occlusion (control group 2) were chosen, the condyle movement of mouth opening and closing, protraction and retraction were recorded and analyzed by computer aided axiography (CADIAX Ⅲ) , the measurements were compared and qualitative analysis was performed. SPSS 10.