This consensus was developed by the Orthodontic Society of the Chinese Stomatological Association to provide a systematic, scientific, and practical guideline for informed consent in orthodontic care. Orthodontic treatment is typically lengthy, highly individualized, and involves multiple factors such as growth and development, occlusal function, and facial esthetics. Rapid technological advances and diverse risk profiles make the traditional reliance on orthodontist experience or institutional templates insufficient to ensure patients′ full understanding and autonomous decision-making. To address this, the expert panel conducted extensive reviews of domestic and international guidelines, analyzed representative dispute cases, and performed multicenter patient-clinician surveys. Using a multi-round Delphi method, the group established a standardized informed consent framework covering the initial consultation, treatment, and retention phases. The consensus emphasizes that informed consent is not only a fundamental legal and ethical requirement but also a key step in building trust, improving patient compliance, and enhancing treatment satisfaction. Orthodontists should clearly and comprehensively explain treatment plans, potential risks, uncertainties, and associated costs, while respecting the autonomy of patients or guardians, and maintain continuous communication and dynamic evaluation throughout the treatment process. The release of this consensus provides unified and authoritative guidance for clinical orthodontics, helping to standardize informed consent, enhance its transparency, safeguard patient rights, reduce medical risks, and promote high-quality, sustainable development of orthodontic practice.

A 58-year-old female patient presented with erythema on the right shoulder and chest for 8 years. The appearance of erythema was concurrent with numbness and weakness in both lower limbs, elevated peripheral blood M protein levels, thyroid dysfunction, and multiple enlarged lymph nodes in the right axilla, leading to a diagnosis of POEMS syndrome. After autologous hematopoietic stem cell transplantation, erythema subsided but recurred 1 year prior to this visit. Physical examination revealed a pigeon egg-sized swollen lymph node on the right side of the neck. Skin examination showed patchy erythema on the right shoulder and chest, with clear boundaries and a hard texture. Serum protein electrophoresis revealed an elevated M protein level, and serum immunofixation electrophoresis showed a restricted IgG λ band. In addition, peripheral blood levels of vascular endothelial growth factor were elevated. Computed tomography scan images showed an irregular flaky bone destruction area at the acromion end of the right scapula, which was consistent with the manifestations of bone plasmacytoma. Histopathological examination of the skin tissue in the right shoulder revealed a large number of dilated and proliferative vessels between dermal collagen fibers, and the patient was diagnosed with AESOP syndrome. Lenalidomide combined with dexamethasone chemotherapy was administered. After three cycles of treatment, M protein turned negative, and erythema became darker in color, and decreased in size compared with the skin lesion before treatment.

This consensus was developed by the Orthodontic Society of the Chinese Stomatological Association to provide a systematic, scientific, and practical guideline for informed consent in orthodontic care. Orthodontic treatment is typically lengthy, highly individualized, and involves multiple factors such as growth and development, occlusal function, and facial esthetics. Rapid technological advances and diverse risk profiles make the traditional reliance on orthodontist experience or institutional templates insufficient to ensure patients′ full understanding and autonomous decision-making. To address this, the expert panel conducted extensive reviews of domestic and international guidelines, analyzed representative dispute cases, and performed multicenter patient-clinician surveys. Using a multi-round Delphi method, the group established a standardized informed consent framework covering the initial consultation, treatment, and retention phases. The consensus emphasizes that informed consent is not only a fundamental legal and ethical requirement but also a key step in building trust, improving patient compliance, and enhancing treatment satisfaction. Orthodontists should clearly and comprehensively explain treatment plans, potential risks, uncertainties, and associated costs, while respecting the autonomy of patients or guardians, and maintain continuous communication and dynamic evaluation throughout the treatment process. The release of this consensus provides unified and authoritative guidance for clinical orthodontics, helping to standardize informed consent, enhance its transparency, safeguard patient rights, reduce medical risks, and promote high-quality, sustainable development of orthodontic practice.

A 58-year-old female patient presented with erythema on the right shoulder and chest for 8 years. The appearance of erythema was concurrent with numbness and weakness in both lower limbs, elevated peripheral blood M protein levels, thyroid dysfunction, and multiple enlarged lymph nodes in the right axilla, leading to a diagnosis of POEMS syndrome. After autologous hematopoietic stem cell transplantation, erythema subsided but recurred 1 year prior to this visit. Physical examination revealed a pigeon egg-sized swollen lymph node on the right side of the neck. Skin examination showed patchy erythema on the right shoulder and chest, with clear boundaries and a hard texture. Serum protein electrophoresis revealed an elevated M protein level, and serum immunofixation electrophoresis showed a restricted IgG λ band. In addition, peripheral blood levels of vascular endothelial growth factor were elevated. Computed tomography scan images showed an irregular flaky bone destruction area at the acromion end of the right scapula, which was consistent with the manifestations of bone plasmacytoma. Histopathological examination of the skin tissue in the right shoulder revealed a large number of dilated and proliferative vessels between dermal collagen fibers, and the patient was diagnosed with AESOP syndrome. Lenalidomide combined with dexamethasone chemotherapy was administered. After three cycles of treatment, M protein turned negative, and erythema became darker in color, and decreased in size compared with the skin lesion before treatment.

Crohn's disease (CD), a chronic and recurrent inflammatory bowel disease, requires repeated intestinal evaluations. As a non-radioactive, non-invasive, well-tolerated, inexpensive and easily reproducible detection tool, intestinal ultrasound (IUS) has been more and more widely used in the diagnosis and treatment of CD in recent years. Various parameters of IUS, such as bowel wall thickness, bowel wall stratification, color doppler signals, and inflammatory mesenteric fat, provide a lot of critical information in the diagnosis and treatment of CD. IUS can not only accurately diagnose CD and its complications, but also well evaluate CD disease activity and treatment response, and effectively predict CD transmural remission, disease duration, surgical risk, and postoperative recurrence. IUS has demonstrated good accuracy in the diagnosis, evaluation and prediction of CD.

This study examines the progress and application of Artificial Intelligence (AI) in the prevention and control of infectious diseases within Chinese healthcare institutions. It analyzes the difficulties and challenges encountered during implementation to promote the intelligent transformation and upgrading of infectious disease prevention and control. The results indicate that AI technology has made progress in areas such as infectious disease surveillance and early warning, risk assessment and emergency response, screening and detection, image-based diagnosis and analysis, and health management. Nevertheless, significant challenges remain, including limited application depth and breadth, issues with data quality and privacy protection, insufficient technological maturity and interpretability, potential legal risks, and a shortage of interdisciplinary professionals. To advance the application of AI technology in infectious disease prevention and control and support the modernization of China′s relevant systems, recommendations include strengthening policy support, establishing data standards and robust privacy protection mechanisms, increasing R&D investment, refining laws and regulations, and enhancing the training of interdisciplinary talent.

Objective:To explore the application efficacy of the continuous oral care program led by dental nurses in adolescent patients with fixed orthodontics and to provide a reference for continuous care to enhance the oral health level of patients.Methods:A randomized controlled trial was carried out in the Orthodontic Department of Shanghai Stomatological Hospital from June to December 2022. A total of 132 adolescent patients with fixed orthodontics were selected through the convenience sampling method and divided into the experimental group and the control group by the random number table method, with 66 patients in each group. The experimental group was provided with the continuous oral care program led by dental specialist nurses, while the control group received routine care. The intervention lasted for 12 months. The Oral Health Impact Scale, the Oral Health Self-Management Ability Questionnaire, and the plaque index were utilized to assess the intervention effect before and after the intervention.Results:A total of 65 participants in the experimental group completed the study, with an age of (14.41 ± 1.60) years, comprising 32 males and 33 females. In the control group, 64 participants completed the study, with an age of (14.15 ± 1.69) years, including 28 males and 36 females. Prior to intervention, there were no statistically significant differences in scores for oral health self-management ability, Oral Health Impact Profile-14, or total plaque index between the experimental and control groups (all P>0.05). Following intervention, the score for oral health self-management ability in the experimental group was (77.42 ± 11.70) points, significantly higher than (70.47 ± 17.49) points of the control group ( t = 2.65, P<0.05). Additionally, the score on the Oral Health Impact Profile-14 for the experimental group was (16.40 ± 3.45) points and their total plaque index was measured at 1.68 ± 0.55 both significantly lower than those recorded in the control group at (18.16 ± 3.79) points and a total plaque index of 1.92 ± 0.47 respectively ( t = - 2.75, - 2.55, both P<0.05). Conclusions:The implementation of the continuous oral care program led by dental specialist nurses is conducive to improving the oral health self-management ability of adolescent patients with fixed orthodontics, reducing dental plaque, improving oral cleanliness, and improving the oral health-related quality of life of patients.

Objective:To investigate the expression and methylation status of the SALL4 gene in placental tissues of fetal growth restriction (FGR) and its effects on trophoblast cell proliferation, migration, and invasion. Methods:Placental tissues were collected from 20 full-term FGR patients and 20 healthy term controls who underwent regular prenatal examination and cesarean section at the Third Affiliated Hospital, Zhengzhou University between July 2023 and February 2024. SALL4 mRNA and protein expression were analyzed by quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot. Methylation specific polymerase china reaction (MSP) assessed promoter methylation levels. HTR8/SVneo cells were transfected with SALL4-targeting small interfering RNA (si-SALL4) or negative control small interfering RNA (si-NC). HTR8/SVneo cells were treated with the demethylating agent 5-aza-2′-deoxycytidine (5-Aza-dC) to inhibit gene methylation (5-Aza-dC group) or with 10% RPMI-1640 medium as a vehicle control. Transfection efficiency (for siRNA) and the efficacy of 5-Aza-dC-induced demethylation were assessed by qRT-PCR and Western blot. The functional effects of SALL4 knockdown and methylation inhibition on trophoblast cells were evaluated using proliferation assays, scratch wound healing assays, and Transwell invasion assays. Statistical analyses included independent t-tests and Chi-square test. Results:(1) Human tissues: FGR placentas showed lower SALL4 mRNA (0.802±0.194 vs. 1.015±0.186, t=3.55) and protein expression (0.445±0.114 vs. 0.701±0.113, t=3.19), alongside higher methylation rates of SALL4 [80% (16/20) vs. 15% (3/20), χ2=14.44] compared to controls (all P<0.05). (2) In vitro: si-SALL4 transfection reduced HTR8/SVneo proliferation (OD450 at 48 h: 0.653±0.021 vs. 0.827±0.040, t=6.60), migration [healing rate at 48 h: (24.317±2.637)% vs. (49.327±1.961)%, t=13.18], and invasion [counted invaded cells: (133.000±6.557) vs. (272.667±18.009) cells, t=12.62] versus si-NC (all P<0.05). Conversely, 5-Aza-dC treatment increased HTR8/SVneo proliferation (0.917±0.042 vs. 0.783±0.031, t=－4.47), migration [(71.097±3.354)% vs. (51.632±2.877)%, t=－7.63], and invasion [(384.000±12.166) vs. (202.833±7.095) cells, t=－13.69] versus vehicle control (all P<0.05). Conclusions:Hypermethylation of the SALL4 promoter in FGR placentas suppresses its expression, impairing trophoblast cell function. Demethylation restores SALL4 expression and enhances cellular proliferation, migration, and invasion, involving in the occurrence and development of FGR disease.

Crohn's disease (CD), a chronic and recurrent inflammatory bowel disease, requires repeated intestinal evaluations. As a non-radioactive, non-invasive, well-tolerated, inexpensive and easily reproducible detection tool, intestinal ultrasound (IUS) has been more and more widely used in the diagnosis and treatment of CD in recent years. Various parameters of IUS, such as bowel wall thickness, bowel wall stratification, color doppler signals, and inflammatory mesenteric fat, provide a lot of critical information in the diagnosis and treatment of CD. IUS can not only accurately diagnose CD and its complications, but also well evaluate CD disease activity and treatment response, and effectively predict CD transmural remission, disease duration, surgical risk, and postoperative recurrence. IUS has demonstrated good accuracy in the diagnosis, evaluation and prediction of CD.

Objective:To analyze the clinical features and diagnostic process of ring chromosome syndrome.Methods:Clinical data of 9 children with ring chromosome syndrome who were treated at the Children′s Medical Center of Peking University First Hospital from September 2009 to May 2025, were summarized and analyzed in a case series study. The data included clinical manifestations, types of epileptic seizures, genetic testing, treatment outcomes, and follow-up results, et al.Results:Among the 9 children with ring chromosome syndrome, there were 6 girls and 3 boys, including 4 children with ring chromosome 20 syndrome, 3 children with ring chromosome 14 syndrome, and 1 child each with ring chromosome 13 and 17 syndrome. All 9 children had de novo chromosomal variations. Among them, 3 children of ring chromosome 20 syndrome were mosaic, and the remaining 6 children were non-mosaic. All 9 children exhibited diverse clinical features, especially those with ring chromosome 20 syndrome, which presented with specific manifestations. The 4 children with ring chromosome 20 syndrome all had acute epileptic seizures as the initial symptom, with onset ages of 67, 39, 17, and 96 months, and all had focal seizures. One child with ring chromosome 20 syndrome had non-convulsive status epilepticus. Development of all 4 children with ring chromosome 20 syndrome was normal before seizure onset, but 3 children showed regression after onset. No physical deformities were observed in 4 children with ring chromosome 20 syndrome, and 2 children were misdiagnosed, 3 children underwent whole exome sequencing and copy number variation analysis in their families, with no abnormalities detected. All 4 children with ring chromosome 20 syndrome were diagnosed through chromosomal karyotype analysis, the intervals between onset and diagnosis were 2, 81, 19 and 13 months, respectively. Follow-up showed that epileptic seizures were not controlled in all 4 children with ring chromosome 20 syndrome. The other 5 children were characterized by developmental delay as the initial symptom, followed by epileptic seizures between 3 and 24 months of age. Developmental regression of the other 5 children did not occur after onset, 2 of them had microcephaly, and 3 had wide-set eyes. No misdiagnoses were reported in these 5 children, and the intervals between onset and diagnosis were 7, 3, 55, 3, and 106 months, respectively. Follow-up showed that epileptic seizures were controlled in these 5 children. Conclusions:Ring chromosome 20 syndrome typically manifest with epilepsy as the initial symptom and are refractory to drug treatment, their early development is entirely normal. Ring chromosome 13, 14, and 17 syndrome are characterized by developmental delay from an early age, followed by the onset of epileptic seizures, which are easily controlled. Conventional whole exome sequencing and copy number variation analysis in families rarely detect ring chromosome abnormalities. Early chromosomal karyotype analysis is essential for the diagnosis of ring chromosome syndrome.