Clinical research on the relationship between the curve of Wilson and temporomandibular joint disorders.

OBJECTIVE: The aim of this study was to examine the relationship between the curve of Wilson (COW) and temporomandibular joint disorder (TMD). METHODS: The study cohort comprised patients aged 19-55 with malocclusion treated at our institution from January to July 2021. They were divided into a malocclusion with TMD group (TMD group) and a malocclusion without TMD group (non-TMB group) based on the diagnostic criteria of TMD. The study outcome was the differences in COW, measured via cone beam computed tomography (CBCT), and statistical analysis was performed using one-way analysis of variance and t-test. RESULTS: A total of 250 adult individuals were enrolled, including 162 females (age: 36.43 ± 11.00 years) and 88 males (age: 36.33 ± 9.88 years). Compared with the non-TMB group (n = 125), the TMD group (n = 125) had a significantly greater angle of COW (first molars: P = 0.002; second molars: P < 0.001), higher buccal inclination angle of molars in those with same side temporomandibular joint (TMJ) sounds than those with TMJ sounds (first molar: P = 0.000; second molar: P = 0.006) and greater the side with TMJ sounds (first molar: P < 0.001; second molar: P = 0.016). However, no difference was observed in the buccolingual axial inclination angle of molars between patients with and without TMJ sounds. CONCLUSION: The study reported the differences in malocclusion patients with and without TMB, which could be used as a reference by dentists to improve the treatment outcomes of these patients.

Association of pet-keeping in home with self-reported asthma and asthma-related symptoms in 11611 school children from China.

OBJECTIVE: We conducted a cross-sectional study to investigate the associations between domestic pets and respiratory health in children. METHODS: We randomly recruited 11,611 school children from Zhongshan, a southern city in China. Information about the respiratory symptoms and disease history of the recruited children, the status of domestic pets, and other related risk factors were collected from March to July 2016. RESULTS: We identified cat-keeping at home increases the risk of persistent cough (OR, 1.77; 95%CI, 1.03-3.05); poultry-keeping at home increases the risk of current asthma (OR, 3.87; 95%CI, 1.08-13.92) and allergic rhinitis (OR, 1.84; 95%CI, 1.01-3.37); sleeping with pets increases the risk of persistent phlegm (OR, 5.04; 95%CI, 1.05-24.28), doctor-diagnosed asthma (OR, 3.35; 95%CI, 1.31-8.57) and current asthma (OR, 4.94; 95%CI, 1.05-23.31) in children. CONCLUSIONS: Cat-keeping and molds on the wall of the house had the multiplicative and additive interaction in doctor-diagnosed asthma. In conclusion, pet-keeping increased the risk of respiratory symptoms in children.