College of Stomatology of Wuhan University was the first dental school who introduced the Kavo head-simulator for clinical teaching.In this study,students of stomatology were investigated before and after head-simulator training and questionares were made.The results have showed that head-simulator teaching system not only raises the activity of student,consolidates the basic knowledge,develops the clinical thinking ability,but also increases the ability of clinical operational skill before clinical training.

OBJECTIVETo investigate the effect of specific anti-streptococcus mutans IgY against streptococcus mutans on dental caries development in rats.

METHODS35 wistar rats were divided into 5 groups: group A received IgY gargle; group B received IgY lyophilized powder; group C received sterilized water as control; group D and E received egg yolk food with or without specific IgY individually. They were all fed with caries-inducing diet 2000#. The number of caries scores was counted by the procedure of Keyes'.

RESULTSThere was a significant lower mean of caries scores in groups treated with IgY lyophilized powder and gargle. By treating with egg-yolk food contained specific IgY, the mean of caries scores decreased comparing with no treatment group.

CONCLUSIONLocal passive immunization with specific anti-streptococcus mutans IgY may be an effective way to prevent the development of dental caries.

Animals ; Antibodies, Bacterial ; administration & dosage ; Dental Caries ; prevention & control ; Female ; Immunization, Passive ; Immunoglobulins ; immunology ; Male ; Rats ; Rats, Wistar ; Streptococcal Vaccines ; immunology ; Streptococcus mutans ; immunology

Objective: To establish a quality control model ensuring good stability and compatibility of manually compounded total nutrient admixtures (TNA). Methods: A parenteral nutrition medication order entry system was establish for standardizing nutritional medication usage and supporting physician's TNA prescribing. TNA medication orders were reviewed by pharmacists for validating the stability and compatibility. TNAs were compounded by pharmacists in a standard way following "four factors of sterile compounding" . The goal of quality control was achieved by establishment of the preliminary standard. Results: The quality of manually compounded total nutrient admixtures achieved the goal since pharmacy intravenous admixture service (PIVAS) started on 2003. Conclusions The quality of TNA is well assured while manually compounded by pharmacists in PIVAS.

In recent years, pulp regeneration has become a research hotspot in the field of stomatology. 3D printing can realize precise control of structure and shape of scaffolds, which provide basis for seed cell adhesion and growth factor release. The 3D printing "pulp complexes" constructed by 3D printing scaffolds for tissue engineering provides a new direction for pulp regeneration research. This paper reviews the applications of 3D printing technology in pulp regeneration. The results of literature review showed that the scaffold materials, seed cells and growth factors in the 3D printing "pulp complexes" all play an important role in the pulp regeneration research. Among them, the scaffold materials act as carriers to load seed cells and growth factors and provide a suitable microenvironment for them. The common seed cells such as dental pulp stem cells, stem cells from apical papilla and stem cells from the human pulp of exfoliated deciduous teeth can provide the cellular basis for pulp regeneration. Moreover, the introduction of growth factors can further support the differentiation of pulp tissue and the reconstruction of pulp vessels and promote pulp regeneration. At present, the 3D printing "pulp complexes" in the study of dental pulp regeneration has made some progress and can induce the formation of pulp-like tissues in the laboratory. However, preparing 3D-printing "pulp complex" with good biological activity, which integrates biomimetic blood vessels and nerves to supply oxygen and nutrients to the cells in the root canal, remains a huge challenge and still needs further exploration and research.

OBJECTIVE：To study clinical situation and influential factors for prognosis of drug-i nduced acute kidney injury （DIAKI）in Chinese population ，and to provide reference for early detection ，early intervention and prognosis improvement of DIAKI. METHODS ：Retrieved from PubMed ，Embase，Cochrane Library ，CNKI，Wanfang database and VIP ，clinical studies related to DIAKI were collected during the inception to Apr. 16th，2020. After the data extraction and quality evaluation of included studies，the results were analyzed descriptively ，and Meta-analysis was carried out by Rev Man 5.3 software. RESULTS ：A total of 29 studies were included ，including 1 870 patients. The results showed that DIAKI accounted for 32.2％（877/2 721）of the patients developed AKI in the same period. Antibacterial drugs were the main cause of DIAKI ，accounting for 47.5％（773/1 629）. The top five drugs by case number were classified as aminoglycoside antibiotics ，diuretics or dehydrating agents ，cephalosporin antibiotics，non-steroidal anti-inflammatory drugs and traditional Chinese medicine. The pathological type of DIAKI was mainly acute interstitial nephritis ，accounting for 51.9％（70/135）. The mortality of DIAKI patients was 14.4％（240/1 677）. A total of 70.4％（1 176/1 670）of patients had renal recovery. Compared with conservative treatment ，the mortality of patients receiving dialysis treatment was significantly lower [OR ＝0.30，95％CI（0.10，0.91），P＝0.003]. Compared with patients without anemia ， patients with anemia had a significantly delayed renal recovery [OR ＝0.25，95％CI（0.09，0.65），P＝0.004]. Lower levels of retinol binding protein was significantly related to rapid renal recovery [MD ＝－15.84，95％CI（－22.34，－9.34），P＜0.01]. CONCLUSIONS：Clinicians need to continuously strengthen antibiotic management and use drugs that induce AKI with caution. For patients with DIAKI ，receiving dialysis treatment as soon as possible may help reduce mortality. Timely correction of the basic anemia status of patients with DIAKI will help patients withrapid renal recovery ，and lower retinol binding protein levels may be a potential biomarker for predicting patients ’rapidrenal recovery.

The dental operative microscope has been widely employed in the field of dentistry, particularly in endodontics and operative dentistry, resulting in significant advancements in the effectiveness of root canal therapy, endodontic surgery, and dental restoration. However, the improper use of this microscope continues to be common in clinical settings, primarily due to operators' insufficient understanding and proficiency in both the features and established operating procedures of this equipment. In October 2019, Professor Jingping Liang, Vice Chairman of the Society of Cariology and Endodontology, Chinese Stomatological Association, organized a consensus meeting with Chinese experts in endodontics and operative dentistry. The objective of this meeting was to establish a standard operation procedure for the dental operative microscope. Subsequently, a consensus was reached and officially issued. Over the span of about four years, the content of this consensus has been further developed and improved through practical experience.
Humans ; Dentistry, Operative ; Consensus ; Endodontics ; Root Canal Therapy ; Dental Care