Objective: To investigate the detection status and influencing factors of the high-risk population for cardiovascular disease (CVD) among residents aged 35 to 75 years in Huairou District, Beijing Municipality, so as to provide references for CVD prevention and control. Methods: Based on the Cardiovascular Disease High-Risk Population Early Screening and Comprehensive Intervention Project conducted from 2016 to 2023, residents aged 35 to 75 years in Huairou District were selected using multistage random cluster sampling. Demographic information, lifestyle factors, body mass index (BMI), and health status were collected through questionnaire surveys, physical examinations, and laboratory tests. The detection rate of high-risk population for CVD was analyzed. Factors affecting high-risk population for CVD among residents were analyzed using a multivariable logistic regression model. Results: A total of 16 912 residents aged 35 to 75 years were screened, including 6 111 males (36.13%) and 10 801 females (63.87%). The majority of residents were aged 50-<60 years, with 6 430 individuals (38.02%). A total of 4 208 residents were identified as CVD high-risk population, with a detection rate of 24.88%. Multivariable logistic regression analysis indicated that gender (male, OR=1.366, 95%CI: 1.243-1.501), age (60-<70 years, OR=1.707, 95%CI: 1.196-2.435; 70-75 years, OR=2.436, 95%CI: 1.688-3.516), education level (junior high school and below, OR=1.155, 95%CI: 1.040-1.282), household registration (agricultural, OR=1.328, 95%CI: 1.195-1.477), alcohol consumption (OR=1.135, 95%CI: 1.014-1.271), BMI (obese, OR=1.215, 95%CI: 1.072-1.377), central obesity (OR=1.157, 95%CI: 1.053-1.272), hypertension (OR=6.325, 95%CI: 5.689-7.032), diabetes (OR=1.205, 95%CI: 1.099-1.322), and dyslipidemia (OR=4.720, 95%CI: 4.246-5.247) were significantly associated with detection as high-risk for CVD. Conclusions The detection rate of CVD high-risk population was relatively high among residents aged 35 to 75 years in Huairou District. Male residents aged 60 to 75 years, those with lower education levels, those with agricultural household registration, those who consumed alcohol, those who were obese or had central obesity, and those with hypertension, diabetes, or dyslipidemia had a higher risk of being identified as CVD high-risk population.

OBJECTIVETo evaluate the effect of base layer thickness of DyadFlow(DF) self-adhesive resin on dentin bonding strength.

METHODSTwenty extracted intact human molars were randomly selected and the occlusal surface of each molar was prepared by removing the enamel and exposing the dentin surface. The prepared molars were divided, randomly and equally, into 4 groups. For groups G0.5, G1.0 and G2.0, DF was applied directly on the dentin surfaces following the manufacturer's instruction, and for group GOB, OptiBond All-in-One(OB) self etching adhesive was applied on the dentin surface before using DF. The base layer thickness of DF was 0.5 mm, 1.0 mm, 2.0 mm, 2.0 mm for groups G0.5, G1.0, G2.0 and GOB, respectively. Composite crown were built up on each tooth, then the samples were sectioned longitudinally into sticks with proximately 1.0 mm2 bonding area(for microtensile bond strength[MTBS] testing) or slabs (for bonding interface observation with SEM). Fifteen sticks were obtained for each group. The fracture surface was also observed using SEM and the fracture type of each specimen was determined.

RESULTSThe MTBS were: GOB (20.19±3.11) MPa>G0.5 (8.65±1.58) MPa>G1.0 (6.65±1.13) MPa>G2.0 (5.70±0.60) MPa(P<0.05). Bonding interface fracture B2 was most frequently observed for all groups: G0.5: 14/15, G1.0: 13/15, G2.0: 14/15 and GOB: 13/15.

CONCLUSIONSThe MTBS decreased when the base layer thickness of DF increased. Direct application of DF self-adhesive resin on dentin surface adhesive restorations should be concerned.

Adhesives ; chemistry ; Crowns ; Dental Bonding ; Dental Enamel ; Dentin ; chemistry ; Dentin-Bonding Agents ; chemistry ; Humans ; Molar ; Resin Cements ; chemistry ; Tensile Strength