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The complexity of oral ulcerations poses considerable diagnostic and therapeutic challenges to oral specialists. The expert consensus was conducted to summarize the diagnostic work-up for difficult and complicated oral ulcers, based on factors such as detailed clinical medical history inquiry, histopathological examination, and ulceration-related systemic diseases screening. Not only it can provide a standardized procedure of oral ulceration, but also it can improve the diagnostic efficiency, in order to avoid misdiagnosis and missed diagnosis.
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Humans , Consensus , Oral Ulcer/therapyABSTRACT
Oral immunosuppression caused by smoking creates a microenvironment to promote the occurrence and development of oral mucosa precancerous lesions. This study aimed to investigate the role of metabolism and macrophage polarization in cigarette-promoting oral leukoplakia. The effects of cigarette smoke extract (CSE) on macrophage polarization and metabolism were studied in vivo and in vitro. The polarity of macrophages was detected by flow cytometric analysis and qPCR. Liquid chromatography-mass spectrometry (LC-MS) was used to perform a metabolomic analysis of Raw cells stimulated with CSE. Immunofluorescence and flow cytometry were used to detect the polarity of macrophages in the condition of glutamine abundance and deficiency. Cell Counting Kit-8 (CCK-8), wound-healing assay, and Annexin V-FITC (fluorescein isothiocyanate)/PI (propidium iodide) double-staining flow cytometry were applied to detect the growth and transferability and apoptosis of Leuk-1 cells in the supernatant of Raw cells which were stimulated with CSE, glutamine abundance and deficiency. Hyperkeratosis and dysplasia of the epithelium were evident in smoking mice. M2 macrophages increased under CSE stimulation in vivo and in vitro. In total, 162 types of metabolites were detected in the CSE group. The metabolites of nicotine, glutamate, arachidic acid, and arginine changed significantly. The significant enrichment pathways were also selected, including nicotine addiction, glutamine and glutamate metabolism, and arginine biosynthesis. The results also showed that the supernatant of Raw cells stimulated by CSE could induce excessive proliferation of Leuk-1 and inhibit apoptosis. Glutamine abundance can facilitate this process. Cigarette smoke promotes oral leukoplakia via regulating glutamine metabolism and macrophage M2 polarization.
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Animals , Mice , Glutamine , Leukoplakia, Oral , Macrophages , Smoking , Tumor MicroenvironmentABSTRACT
Since the outbreak of Coronavirus Disease 2019 (COVID-19), a large number of clinical trials affected by the epidemic are suspended and postponed, and clinical trial institutions have initiated a series of emergency management measures. The characteristics of the diagnosis and treatment of stomatology are that the doctors and patients are closed to each other face to face, it is easy to produce droplets and aerosols, and there are many invasive operations, which leads to high risk of cross infection. The epidemic of COVID-19 poses a huge challenge to the operation of stomatological clinical trials. This paper based on the epidemic prevention and control requirements and the consensus on clinical trial management under major public health emergencies, combined with the relevant work guidelines of the institution and the relevant clinical trial regulations, puts forward suggestions on the clinical trial operation management and protective measures during the epidemic period. It may be helpful to the stomatological clinical trial researchers and subjects during the period of COVID-19.
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Complying with overall requirements of the government and regulations on public health emergences, as well as the clinical features of diagnosis and treatment of dental illness, this paper refers to previous guidelines and studies on the infection prevention and control in dental diagnosis and treatment in China and foreign countries. Nanjing Stomatological Hospital has implemented the emergency management practices for the prevention and control of novel coronavirus pneumonia (NCP), mainly focusing on the implementation of prevention and control training programs for medical staffs and the infection control projects on the hospital environment. This study could provide reference for rapid response and emergency management for the prevention and control of NCP in the departments of stomatology.
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Objective: To compare the short-term effects of triamcinolone acetonide paste(TAP) with prednisone acetate paste(PAP) for the treatment of minor aphthous ulcer (miRAU). Methods: 65 patients with miRAU were divided into 2 groups randomly. TAP(n = 32) and PAP(n = 33) were topically applied for the patients in the 2 groups respectively 3 times per day for a week. Ulcer size and pain index(VAS) on day 3 and day 5 were recorded. Re-examination was conducted 1 week after treatment. The effects were compared between the 2 groups. Results: The ulcer size and VAS decreased in the 2 groups after treatment(P＜ 0. 05). In TAP group ulcer size and VAS both decreased more than those in PAP group(P＜ 0. 05). The ulcer duration(d) of TAP and PAP group was 4. 65 ± 1. 91 and 6. 45 ± 1. 09(P＜ 0. 05), the effective rate was 80. 6％ and 34. 5％ (P＜ 0. 05), respectively. Conclusion: Triamcinolone acetonide paste has an advantage in short-term effects over prednisone acetate paste, and it improves the efficiency of treating miRAU.
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Objective To investigate the short-term efficacy of compound gargle solution chlorhexidine giuconatie and kangfuxin liquid in treatment of recurrent aphthous ulcer (RAU).Methods Eighty patients clinically diagnosed with RAU were chosen and randomly divided into two groups.Test group 1 (40 cases) and Test group 2 (40 cases) were treated with compound gargle solution chlorhexidine giuconatie and kangfuxin liquid respectively until ulcer has been healed completely to evaluate the difference of two groups in clinical efficacy.Return visit and follow-up visit were conducted 7 days and 30 days after the initial treatment,respectively.Results The analgesic onset time of Test group 1 [(6.24 ± 1.09) min] was shorter than that of Test group 2 [(8.62 ± 1.04) min],with statistically significant difference (P ＜ 0.01).The analgesic maintenance time of Test group 1 [(29.47 ± 3.45) min] was longer than that of Test group 2 [(21.61 ±2.18) min],with statistically significant difference (all P ＜ 0.01).The duration of ulcer of Test groups 1 and 2 was (5.97-± 0.87)days and (4.76 ± 1.14)days,with statistically significant difference (P ＜0.01).Conclusions Compound gargle solution chlorhexidine giuconatie and kangfuxin liquid both have a certain level of clinical efficacy for RAU,with the former featuring shorter analgesic onset time and longer duration and the latter advantageous in promoting RAU healing short-term usage of compound gargle solution chlorhexidine giuconatie and kangfuxin liquid cannot prolong RAU dormancy.
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Objective To investigate the short-term efficacy of compound gargle solution chlorhexidine giuconatie and kangfuxin liquid in treatment of recurrent aphthous ulcer (RAU).Methods Eighty patients clinically diagnosed with RAU were chosen and randomly divided into two groups.Test group 1 (40 cases) and Test group 2 (40 cases) were treated with compound gargle solution chlorhexidine giuconatie and kangfuxin liquid respectively until ulcer has been healed completely to evaluate the difference of two groups in clinical efficacy.Return visit and follow-up visit were conducted 7 days and 30 days after the initial treatment,respectively.Results The analgesic onset time of Test group 1 [(6.24 ± 1.09) min] was shorter than that of Test group 2 [(8.62 ± 1.04) min],with statistically significant difference (P ＜ 0.01).The analgesic maintenance time of Test group 1 [(29.47 ± 3.45) min] was longer than that of Test group 2 [(21.61 ±2.18) min],with statistically significant difference (all P ＜ 0.01).The duration of ulcer of Test groups 1 and 2 was (5.97-± 0.87)days and (4.76 ± 1.14)days,with statistically significant difference (P ＜0.01).Conclusions Compound gargle solution chlorhexidine giuconatie and kangfuxin liquid both have a certain level of clinical efficacy for RAU,with the former featuring shorter analgesic onset time and longer duration and the latter advantageous in promoting RAU healing short-term usage of compound gargle solution chlorhexidine giuconatie and kangfuxin liquid cannot prolong RAU dormancy.
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Objective:To compare the bonding strength of 3M Adper Easy One(3AEO),Clearfil S3 Bond(CSB)and Super-Bond C&B(SBCB)in vertical tooth fracture mode.Methods:30 freshly extracted human molars were randomly assigned to three groups(n =10).The teeth were cut along the long axis with low speed cutting machine and were prepared into a unified model of the vertical tooth fracture.The three adhesives were respectively used to adjoin the surface of the fractured teeth.The samples were subjected to thermal cycling for 500 cycles,stored in distilled water at 37 ℃ for 24 h.Then the pillar-like specimens with the bonding area of 1.0 mm × 1.0 mm were prepared.The microtensile bond strength was measured and the fracture mode was observed.Results:The bond strength (MPa)of 3AEO,CSB and SBCB was 18.57 ±4.98,16.93 ±4.70 and 22.75 ±5.18 respectively(P 0.05).Conclusion:The surface bonding of Super-Bond C&B in tooth fracture is stronger than 3MAdper Easy One and Clearfil S3 Bond.
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Objective To improve hand hygiene compliance among healthcare workers (HCWs)in a stomatological hos-pital,and effectively reduce healthcare-associated infection(HAI)rate.Methods According to WHO hand hygiene guide-line and implementation scheme of hand hygiene,a systemic and step by step hand hygiene promotion plan was formulated, the plan was divided into five steps:full alert,baseline investigation,improvement,tracking,and retrospective analysis. Hand hygiene compliance among HCWs before and after the promotion of activities was analyzed and compared. Results Through hand hygiene promotion activities,the questionnaires showed that average score of knowledge about hand hygiene among HCWs enhanced from 58.33 to 77.40 (increased by 32.69%);the average hand hygiene compliance rate increased from 24.28%(59/243)to 49.81%(133/267),the difference was significant(χ2 =35.331,P =0.000);hand hy-giene status at five moments for hand hygiene improved markedly.Conclusion Hand hygiene promotion has a significant in-fluence in hand hygiene among HCWs in this stomatological hospital.
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<p><b>OBJECTIVE</b>To examine the expression of nucleotide-binding oligomerization domain 1 (NOD1), nuclear factor-kappa B (NF-κB) and human beta-defensins in candidal albicans leukoplakia and to investigate the effect of candida albicans infection on key proteins in NOD1 signaling pathway and the expression of human beta-defensin.</p><p><b>METHODS</b>Forty cases of oral leukoplakia samples were collected and stained by hematoxylin-eosin staining, periodic acid-Schiff staining, silver staining and immunohistochemical methods. Nineteen samples were positive with these four methods and judged as candidal albicans leukoplakia, and the other twenty- one samples judged as leukoplakia without candidal albicans infection. Western blotting was used to detect the expressions of NOD1 and NF-κB in these forty samples. In addition, the immunohistochemical method was adopted to investigate the relationship between NOD1, NF-κB, human beta-defensin 1, 2, 3 expressions and candida albicans.</p><p><b>RESULTS</b>The positive rate of candida albicans in oral leukoplakia was 48% (19/40). The expressions of NOD1 and NF-κB in the candida albicans leukoplakia were lower than that in leukoplakia without candida albicans infection. The mean optical density value of NOD1, NF-κB, human beta-defensin 1, 2, 3 in candidal albicans leukoplakia were 0.25 ± 0.01, 0.30 ± 0.02, 0.35 ± 0.02, 0.42 ± 0.03, 0.36 ± 0.02 respectively, which were significantly lower than that in leukoplakia without candida albicans infection (0.31 ± 0.02, 0.47 ± 0.03, 0.42 ± 0.02, 0.53 ± 0.04, 0.47 ± 0.03) (P < 0.05).</p><p><b>CONCLUSIONS</b>By inhibiting the NOD1 signaling pathway, candida albicans infection may reduce the expression level of human beta-defensin 1, 2, 3 in oral leukoplakia.</p>
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Humans , Blotting, Western , Candida albicans , Candidiasis , Metabolism , Leukoplakia, Oral , Metabolism , NF-kappa B , Nod1 Signaling Adaptor Protein , Nucleotides , Signal Transduction , beta-DefensinsABSTRACT
Intestinal obstruction in children is a common acute abdomen in pediatric surgery.The causes of obstruction are complex.Intestinal obstruction not only impacts on the intestine both in anatomy and function but also causes systemic physiological disorder.So accurate and timely diagnosis of intestinal obstruction is obviously favorable for the treatment.And it is also critical in rescuing serious state and avoiding death.
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Objective: To identify the different protein expression profiles between human oral squamous cell carcinoma (OSCC) and normal oral mucosa tissues, and provide experimental data for further study of the development mechanism of OSCC. Methods: 10 cases of OSCC and paired normal oral mucosa tissues were collected and analyzed through two-dimensional gel electrophoresis (2-DE) and matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF-MS). Results: (1) The average protein spots of OSCC were 2 325±390, while that of normal oral mucosa tissues were 2 487±281. (2) 29 differential protein spots were found between OSCC and normal oral mucosa. Moreover, these protein spots were all down- regulated in OSCC compared with normal oral mucosa. Among these spots, 3 were identified as fibrin beta, triosephosphate isomerase (TIM) and unknown protein through mass spectrometry and bioinformation. Conclusion: Down-regulation of fibrin beta, Triosephosphate isomerase(TIM) and unknown protein are found in the development of OSCC and the mechanism needs further study.
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Objective:The purpose of this study was to observe Huwang Mingmu San’s(HWMMS)effect on the experimental vitreous hemorrhage.Methods:We divided 48 rabbits randomly into the A group as the normal control group,the B group as the modal group,the C group as the traditional chinese medicine group(HWMMS)and the D group as the western medicine group(entodan).Six rabbits of the four groups were killed randomly in the 8th week and their vitreous send to TNF-?,IL-6 examination at the same time.We study the activity level of MDA,SOD,NA-K-ATP enzyme on retinal.Results: It was suggested that the TNF-?’s content in HWMMS group had significantly increased than that in the normal group and the model group but no difference was found between the HWMMS group and the entodan group.Meanwhile the results showed that the HWMMS group’s content of IL-6 and MDA was lower and SOD activity,NA-K-ATP enzyme content was higher than those in the model group and the entodan group.Conclusion:We concluded that the HEMMS had a remarkable therapeutic effect on retinal damage and in promoting absorption vitreous hemorrhage.
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Objective:To find biomarkers for oral lichen planus by comparing differential expressing proteins. Methods:10 cases of oral lichen planus and normal oral mucosa tissues were collected.Total protein was extracted; differential proteome profiles were established and analyzed by two-dimensional polyacrylamide gel electrophoresis(2D-PAGE) and matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF-MS). Results:(1)The well-resolved,reproducible 2-DE patterns of oral lichen planus and normal oral mucosa were obtained. The results showed that average protein spots were 1 576?67 and 1 608?73 in oral lichen planus and normal oral mucosa respectively, (2) The 13 differential protein spots were identified by Imaging Master 2D image analysis software between oral lichen planus and normal oral mucosa. There were 7 protein spots in oral lichen planus were higher than those in normal oral mucosa, 6 protein spots in oral lichen planus were lower than those in normal oral mucosa. 10 differential expressing proteins were analyzed by mass spectrometry and bioinformation. 4 of them were well characterized including manganese superoxide dismutase (Mn-SOD), Annexin I, vimentin and unknown proteins. Conclusion:Differential expression proteins might be candidate biomarkers for diagnosis of oral lichen planus;and proteomic technique is valuable for screening the diagnostic biomarkers.
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Objective:To evaluate the effects of resistance of bonded amalgam restorations to fracture after treatment.Methods: Fifty healthy extracted maxillary teeth were selected,ten of them as control.The remainder were prepared a mesial occlusal distal(MOD) cavity.All of the teeth were then divided into five groups: 1st group: control;2nd group: direct restoration;3rd group: Luting;4th group: GC Fuji Ⅱ;5th group: RelyX ARC.All specimens were placed in a 37 degree centigrade humidity chamber for 72 h.The samples were thermocycled for 2 500 cycles at a temperature of 5 ℃ and 55 ℃.The samples use fatigue testing and observe by scanning electron microscope.Results:The preparation and restoration groups required significantly less force to fracture than the control group.The group with glass-ionomer cement bonding and composite resin bonding showed no significantly fracture resistance.Conclusion:Bonded amalgam restoration is a effective technique.At the same time glass-ionomer cement bonding and composite resin bonding shows no significantly fracture resistance.
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Objective: To study the effects of Carisolv caries removal method on dentin bonding strength. Methods:Thirty extracted human third molars with moderate occlusal caries were used. Each molar was split into two parts, one part was prepared by Carisolv method and another was prepared by the low-speed burs. Then samples were randomly divided into three groups. Three adhesive systems were used: Prime&Bond NT +Dyract AP compomer、Uni-Etch +One-step plus+Renew resin composite and Prompt-L-Pop +Z100 resin composite. Microtensile bonding strength(MTBS) of the three adhesive systems were tested. Results:The MTBS of the three adhensive systems were (17.22?7.95) MPa, (25.40?8.44) MPa, (17.66?8.33) MPa in Carisolv group, and were (16.01?7.43) MPa, (23.45?7.55) MPa, (16.26?7.97) MPa in burs group. There was no significant difference between the two caries removal methods.Conclusion:Carisolv caries removal method has no side effects on dentin bonding strength of the three adhesive systems.
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Objective: To study the effect of Carisolv in caries removal on dentin bonding surface.Methods:24 extracted third molars with moderate carious were randomly divided into four groups. Each cavity was split into two parts, one part was prepared by Carisolv and the other by high-speed bur. Then samples were processed as follows: samples in group A were not treated, those in group B were treated with 320 ml/L phosphoric acid, SEM was used to observe the morphology of dentin surface of the samples in group A and B. Samples in group C were restored with Dyract AP and those in group D with resin for the observation of the microstructure of dentin-filling bonding interfaces.Results:In group A, rough surface without obvious smear layer was exhibited and dentinal tubules were clearly open after Carisolv preparation; after bur preparation, dentin surfaces were covered with a thick smear layer and no opening of tubules was visible. In group B, after treatment with 320 ml/L phosphoric acid, the smear layer was removed and dentinal tubules were exposed after either Carisolv or bur preparation, but tube stoppers were visible in the samples prepared by bur. In group C, resin tags were observed only in the samples after Carisolv preparation. In group D,dentin surfaces and lengths of the resin tags did not show remarkable difference after Carisolv or bur preparation, but more lateral branch connection between resin tags appeared in the samples prepared by Carisolv than by bur.Conclusion:The dentin prepared by Carisolv favors bonding between dentin and resin/compomer and has the advantage of restoring with compomer.
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Objective: To study the expression of the proliferating c el l nuclear antigen (PCNA) and cell nuclear area in the different layers of oral d ysplasia epithelium. Methods: S-P immunohistochemical method an d morphometric technique(computer image measurement method) were used to examine the PCNA and cell nuclear area in the different layers of the normal oral epith elium(NOR) in 8 cases and abnormal oral epithelium in 46 cases including mild d ysplasia(LD), moderate dysplasia(MD), severe dysplasia(SD) and well-differentia ted squamous cell carcinoma(SCC). Results: The positive PCNA sta ining cells in normal epithelium was found mainly in the basal layer. The prolif erating index(PI) in the whole layer of abnormal oral epithelium were increased (P05). PI in the basal la yer of abnormal epithelium was higher than in NOR (P0.05). PI in the spi nosum layer and superficial layer (granulosum and lucidum layer) increased with the development of the lesions, The cell nuclear area in the basal and spinosum layer of the abnormal epithelium increased(P