Cardiac Computed Tomography to Guide the Selection of Better Display Angle of Cardiac Right Ventricular Pacing Electrode in Radiography.

Background: Traditional radiography angles do not adequately reveal the shape and position of the right ventricular pacing electrode.

Objective: This study aimed to explore better radiography angles with the help of cardiac computed tomography (CT).

Methods: We analyzed the cardiac CT images of consecutive outpatients from 2018 to 2019.

[Analysis of pathogenic relations between dental caries and periodontitis].

Objective: In order to search the cause of dental caries and periodontitis.

Methods: Selected 70 patients with severe chronic periodontitis (CP group) and 50 patients with caries sensitivity (CS group) in clinical adults of oral medicine (18 to 50-year-old) during 1 year. Parameters of oral hygiene, caries and periodontitis were recorded in the typical groups of CP and CS.

[Relationship between the gingival crevicular fluid occult blood test and periodontal inflammation].

Objective: To seek a new non-traumative method applied to the diagnosis of gingival bleeding; Studies on the internal relationship between gingival bleeding and microbacteria.

Methods: 102 saliva samples were tested for salivary occult blood test(Sobt),1600 sites for gingival crevicular fluid occult blood test (GCFobt) by the test strips, clinical assessments including sulcus bleeding index(SBI) and probing depth(PD); 79,32 subgingival plaque samples for smearing and bacteria culture respectively. Studies on the relationship between GCFobt and clinical index and subgingival bacteria.