Cemental tear is a rare and indetectable condition unless obvious clinical signs present with the involvement of surrounding periodontal and periapical tissues. Due to its clinical manifestations similar to common dental issues, such as vertical root fracture, primary endodontic diseases, and periodontal diseases, as well as the low awareness of cemental tear for clinicians, misdiagnosis often occurs. The critical principle for cemental tear treatment is to remove torn fragments, and overlooking fragments leads to futile therapy, which could deteriorate the conditions of the affected teeth. Therefore, accurate diagnosis and subsequent appropriate interventions are vital for managing cemental tear. Novel diagnostic tools, including cone-beam computed tomography (CBCT), microscopes, and enamel matrix derivatives, have improved early detection and management, enhancing tooth retention. The implementation of standardized diagnostic criteria and treatment protocols, combined with improved clinical awareness among dental professionals, serves to mitigate risks of diagnostic errors and suboptimal therapeutic interventions. This expert consensus reviewed the epidemiology, pathogenesis, potential predisposing factors, clinical manifestations, diagnosis, differential diagnosis, treatment, and prognosis of cemental tear, aiming to provide a clinical guideline and facilitate clinicians to have a better understanding of cemental tear.
Humans ; Dental Cementum/injuries* ; Consensus ; Diagnosis, Differential ; Cone-Beam Computed Tomography ; Tooth Fractures/therapy*

Objective To study the value of ultrasonography combined with serum Gastrin-17 in differenti-al diagnosis of abdominal IgA vasculitis in children.Methods A total of 80 children with IgA vasculitis admit-ted to the hospital from June 2020 to December 2022 were selected,including 45 cases of abdominal IgA vascu-litis(observation group)and 35 cases of other types of IgA vasculitis(without gastrointestinal symptoms,control group).The ultrasonographic characteristics and Gastrin-17 level of abdominal IgA vasculitis were an-alyzed,and the relationship between Gastrin-17 level and purpura symptom score was analyzed.Receiver oper-ating characteristic(ROC)curve was used to analyze the diagnostic value of ultrasonography and Gastrin-17 for abdominal IgA vasculitis in children.Results The symptom score of purpura in the observation group was significantly higher than that in the control group(P<0.001),while the serum Gastrin-17 level in the obser-vation group was significantly lower than that in the control group.Pearson correlation analysis showed that serum Gastrin-17 level was negatively correlated with purpura symptom score(r=-0.758,P<0.001).Ul-trasound images showed"doughnut"-like changes in the intestinal wall,with different degrees of central-thick-ness thickening and reduced echo,mainly submucosal thickening.ROC curve analysis showed that the cut-off value of serum Gastrin-17 in the diagnosis of abdominal IgA vasculitis in children was 2.91 pmol/L,the area under the curve was 0.787(95%CI:0.685-0.888),the sensitivity and the specificity were 75.56%(34/45)and 74.29%(26/35),respectively.The sensitivity of ultrasound combined with Gastrin-17 in the diagnosis of abdominal IgA vasculitis in children was 97.78%(44/45),the negative prediction rate was 95.65%(22/23),and the accuracy rate was 82.50%(66/80),which was significantly higher than those of single diagnosis(P<0.05).Conclusion Serum Gastrin-17 level is low in children with abdominal IgA vasculitis,and ultrasound imaging shows"doughnut"-like changes in the intestinal wall and thickening of the submucosa.Combined de-tection of the two could effectively differentially diagnose abdominal IgA vasculitis in children.

BackgroundSibling relationships play a critical role in shaping anxiety symptoms in firstborn children. Anxiety symptoms often originate in early childhood and can persist into adolescence and adulthood. However， there is insufficient research on anxiety symptoms in preschool children， especially firstborn preschool children. ObjectiveTo explore the influencing factors of anxiety symptoms among firstborn preschool children， so as to provide references for the intervention of anxiety symptom for children in families with multiple children. MethodsFrom October to December 2021， a total of 8 449 children from 234 kindergartens in Longhua District of Shenzhen were included using a cluster sampling method. Sibling Inventory of Behavior （SIB） and Spence Preschool Anxiety Scale （SPAS） were used to investigate. Logistic regression analysis was used to identify influencing factors of anxiety symptoms in firstborn preschool children. ResultsA total of 8 419 （99.64%） valid questionnaires were collected. Anxiety symptoms were detected in 344（4.09%） firstborn preschool children. Statistically significant differences were observed between anxiety group and non-anxiety group in terms of household registration， monthly family income， maternal age， maternal education level， paternal education level， family living conditions and whether they are left-behind children （χ²/t=9.906， 33.490， 5.136， 13.485， 9.690， 17.332， 21.975， P<0.05 or 0.01）. Compared with non-anxiety group， children in the anxiety group scored higher on the SIB dimensions of rivalry， aggression and avoidance （t=165.322， 74.471， 286.419， P<0.01）， and lower on companionship， empathy and teaching （t=59.133， 42.417， 39.112， P<0.01）. Risk factors for anxiety symptoms in firstborn preschool children included left-behind children， as well as negative sibling relationships characterized by rivalry and avoidance （OR=1.195， 1.143， 1.260， P<0.05 or 0.01）. ConclusionFirstborn preschool children who are left-behind are more susceptible to anxiety symptoms. Negative sibling relationships， characterized by competition and avoidance， may also contribute to the emergence of anxiety symptoms in firstborn preschool children.

Promoting wound healing is a common clinical challenge faced by surgeons, with a variety of repair method and materials currently available for clinical use. In recent years, with the continuous development of disciplines such as tissue engineering, regenerative medicine, and materials science, research on wound repair materials has progressed rapidly. This article will organize the classification, advantages and disadvantages, and the latest advancements in the preparation processes of wound repair materials. It will also discuss the current challenges faced by wound repair materials and future research directions, with the aim of providing a reference for related studies in wound repair.

Promoting wound healing is a common clinical challenge faced by surgeons, with a variety of repair method and materials currently available for clinical use. In recent years, with the continuous development of disciplines such as tissue engineering, regenerative medicine, and materials science, research on wound repair materials has progressed rapidly. This article will organize the classification, advantages and disadvantages, and the latest advancements in the preparation processes of wound repair materials. It will also discuss the current challenges faced by wound repair materials and future research directions, with the aim of providing a reference for related studies in wound repair.

Objective To evaluate the effect of doxofylline on pulmonary inflammatory response induced by mechanical ventilation in rats with chronic obstructive pulmonary disease (COPD).Methods Thirty adult male Sprague-Dawley rats,aged 8 weeks,weighing 200-250 g,were divided into 3 groups (n=10 each) using a random number table method:control group (C group),COPD group and doxofylline group (Dox group).Rats were fed in normoxia for 2 months,and normal saline 0.2 ml was injected into the trachea on 1st and 30th days in C group.Rats were exposed to cigarette smoke for 30 min every day,lasting for 2 months,and lipopolysaccharide 200 μg (0.2 ml) was injected into the trachea on 1st and 30th days in COPD and Dox groups.Two months later,rats in each group were anesthetized,tracheally intubated,and then mechanically ventilated.Doxofylline 50 mg/kg was intravenously injected immediately after intubation in Dox group,and the equal volume of normal saline was given instead in C and COPD groups.Pulmonary specimens were taken after 120 min of mechanical ventilation for examination of pathological changes and for determination of wet/dry weight ratio (W/D ratio) and tumor necrosis factor-alpha (TNF-α) and interleukin-10 (IL-10) contents (by enzyme-linked immunosorbent assay).Results No significant pathological change of lung tissues was found in C group,and COPD pathological changes were observed in COPD and Dox groups.Compared with C group,the W/D ratio and TNF-α level were significantly increased,and the IL-10 level was decreased in COPD and Dox groups (P＜0.05).Compared with COPD group,the W/D ratio and TNF-α level were significantly decreased,and the IL-10 level was increased in Dox group (P＜0.05).Conclusion Doxofylline can reduce the pulmonary inflammatory response induced by mechanical ventilation in rats with COPD.

Objective To investigate the effects of ursolic acid (UA) on cisplatin (CDDP)-induced expres_sion of transient receptor potential vanilloid 1 (TRPV1) in mouse cochlea .Methods Sixty BALB/c mice were ran_domly divided into 4 groups (15 mice in each group) and received introperitoneal injection once daily for 5 days:Control group (normol saline) ,UA group (80 mg/kg/day) ,CDDP group (4 .5 mg/kg/day) ,and CDPP (4 .5 mg/kg/day) plus UA group (80 mg/kg/day) .The expression of TRPV1 in mouse cochlea was determined by immuno_histochemistry ,microscope image analysis and western blot ,and auditory thresholds were evaluated by auditory brainstem response (ABR) measurement .ResuIts The expression of cochlea TRPV1 and ABR threshold shift was significantly increased in the mice treated with CDDP (P< 0 .05) ,as compared with control mice .These effects were prevented by UA treatment (all P<0 .05) .Furthermore ,a linear relationship analysis revealed that the ex_pression of cochlea TRPV1 was significantly correlated with ABR threshold shift(|r|>0 .7 , P<0 .05) .ConcIusion UA effectively attenuated CDDP -induced ototoxicity and improved auditory function through inhibition of TR_PV1 .

Objective To understand the continuous care needs and related services will of the women in puerperium, and analyze the relative factors of the continuity care of those discharged from maternity hospital.Methods A total of 207 delivery women who were discharged from a hospital in Chenghua District Maternal & Child Care Center in Chengdu city from September to December, 2014 were investigated with self-made questionnaires.Results As for newborn babies' continuity care service, what those delivery women care most were newborn babies' common disease prevention and care, and as for their own continuity care service, what they most need were maternal uterine instauration care.Enforcers for continuity of care services were more inclined to obstetricians and pediatricians, and the service forms tended to make telephone calls or do follow-up visits.Time frequency of the follow-up visits was inclined to 7 days once.Delivery women's educational degree (r=-0.216, P＜0.01), place of residence (r=0.208, P＜0.01), whether they would participate in pregnant Women school (r=0.192, P＜0.01), pregnant women school number (r=-0.382, P＜0.01),the newborn's tire(r=0.173, P＜0.05) and maternal type(r=0.161, P＜0.05) were factors that influenced the degree of maternal continued care needs.Conclusions The main factors which influence the continuity care in obstetrics are educational degrees, place of residence and the types of delivery women.As a result, different methods of continuity care service should be established to aim at different groups of people so as to promote the service quality in obstetrics in general to meet the needs of delivery women at all levels.

Objective To evaluate the clinical values of the TR band, analyze the factors about the hemorrhage delay at the same time. Methods Divided 98 patients who had accepted the radial artery interventional radiology into the observation group (52 cases) and the control group (46 cases) randomly. The TR band was used in the observation group and the routine nursing method was used in the control group. Results The incidence rate of complication in the observation group was significant lower than that of in the control group,P