Crown Lengthening ; methods ; Crowns ; Dental Caries ; therapy ; Dental Restoration, Permanent ; Humans ; Root Canal Therapy ; Tooth Fractures ; therapy

Alveolar Bone Loss ; surgery ; Humans ; Molar ; injuries ; surgery ; Periodontitis ; surgery ; Tooth Root ; injuries ; surgery

Adult ; Aggressive Periodontitis ; diagnosis ; diagnostic imaging ; therapy ; Combined Modality Therapy ; Dental Scaling ; Female ; Humans ; Orthodontics, Corrective ; Radiography ; Tooth Loss ; diagnosis ; diagnostic imaging ; therapy

Objective To evaluate the capacity of atopy patch test in diagnosis of food allergy in children with atopic dermatitis (AD).Methods Egg and milk,as the most common food allergens among Chinese children,were employed in this study.Skin prick test (SPT) and atopy patch test (APT) with fresh egg and milk were carried out in 68 children with AD.Oral food challenges in an open style were performed to confirm the diagnosis of food allergy.Resuits Of these patients,58(85.3%)were sensitive to egg,40(58.8%)to milk and 34(50.0%) to both.Of 98 patients with positive challenge,47 showed late response,10 immediate reactions.and 41 mixed reactions.The sensitivity,specificity,positive predictive value (PPV),negative predictive value (NPV) and the agreement with food challenges in diagnosis of egg/milk allergy were 96.6%/67.5%.90.0%/82.1%,98.2%/84.4%,81.8%/63.9% and 95.6%/73.5%,respectively for APT alone,37.9%/30.0%,100%/89.3%,100%/80.0%,21.7%/47.2% and 47.1%/54.4%,respectively for SPT alone.APT was found to be more sensitive in diagnosis of late-phase reactions than SPT (P<0.01).No significant difference was found in the sensitivity between APT alone and the combination of APT and SPT in parallel algorithm for diagnosis of egg or milk allergy (x2=0.509,0.549,both P>0.05) or in the specificity between APT alone and that in serial algorithm( P=1.000;x2=3.514,P>0.05).Conclusions APT is superior to SPT in diagnosis of late responses to food,and the combination of SPT and APT does not facilitate the diagnosis of food or milk allergy compared with APT alone.

Objective To evaluate the significance of human interleukin-31(IL-31)in the pathogenesis of atopic dermatitis and its correlation with pruritus in patients with atopic dermatitis(AD).Methods Twenty-two children with mild to severe atopic dermatitis and 22 age-matched healthy controls were included in this study.Patients and controls were randomly and equally assigned into stimulation and non-stimulation groups.Venous blood samples were obtained from all participants,peripheral blood mononuclear cells were isolated from these samples and cultured with(stimulation groups)or without(non-stimulation groups)staphylococcal enterotoxin B(SEB)for 24 hours.Then,the mRNA expression of IL-31 on PBMCs was assessed via real-time reverse transcription-PCR.ELISA was used to detect the total serum IgE level in these objects.The severity of AD in patients was rated according to scoring atopic dermatitis(SCORAD).The relationship between the mRNA expression of IL-31 and the level of serum total IgE.severity of atopic dermatitis,and degree of pruritus.was evaluated.Results The expression of IL-31 mRNA on non-stimulated PBMCs from patients was 23.2 folds as high as that from the healthy controls(P＜0.01).The stimulation with SEB upregulated the mRNA expression of IL-31 on PBMCs.and the increase on PBMCs from patients was 20.44 times of that from the controls.The total serum IgE level was 260.05 IU/mL(5.9-1131.01 IU/mL)and 17.7 IU/mL(5-140.7 IU/mL)in the Patients and controls respectively(P＜0.01).There was no significant correlation between the mRNA expression of IL-31 and disease severity or total serum IgE level(r=0.07.0.22respectively.both P＞0.05)in patients witll AD.Condusions IL.3 1 is involved in t11e pathogenesis of AD,which is unlikely to be IgE-dependent.SEB can induce the rapid expression of IL-31 on PBMCs of healthy human,and is an important modulator for the production of IL-31.

Objective To investigate the changes of thyroid hormone in peritoneal dialysis patients and analyse its impact factors, as well as the therapeutic effects of small dose of thyroxine.Methods 150 uremic patients in Hunan Provincial People’s Hospital from December 2013 to December 2014 were selected, 70 cases of uremia non-dialysis patients were divided into group A, while 80 uremia peritoneal dialysis for more than half a year were divided into group B.70 cases healthy examinees during the same period in our hospital were selected as control group ( group C ) . The total triiodothyronine (T3), total thyroxine (T4), free triiodothyronine (FT3), free thyroxine (FT4), thyroid stimulating hormone (TSH), hemoglobin (Hb), serum albumin (ALB), total cholesterol (TC), triglyceride (TG), serum creatinine (SCr), C reactive protein (CRP) and left ventricular ejection fraction ( LVEF) , subjective global assessment of nutritional act ( SGA) and other indicators were detected in three groups.Patients in group B were divided into two sub-groups according to thyroid hormone levels: B1 group had normal thyroid level while B2 abnormal.And the administration of small dose of thyroid hormone was given to patients in group B2, and the effect of the administration was evaluated by the above indexes.Results The FT3 in group A and B were significantly lower than that in group C (P<0.01).There were significant differences of levels of ALB, CRP, SGA between group B1 and group B2, and the FT3 level in group B was significant correlated with SGA, ALB, LVEF(r=0.815,P<0.001;r=0.780,P<0.001;r=0.953,P<0.001).After treated with small dose of thyroid hormone, FT3 and LVEF were improved while FT4, TSH, ALB, SGA, CRP were not improved in group B2.Conclusion The thyroid hormone level in patients with continuous ambulatory peritoneal dialysis decreases which is dominated with FT3.The decreased thyroid level is significantly correlated with nutrition ( ALB, SGA) and left ventricular function.The administration of small dose of thyroid hormone can improve the left ventricular systolic function.

Objective: To investigate the protective effect of moxibustion in initiating the endogenous protection information on gastric mucosa, and its relationship with the pathway of common peroneal nerve.Methods: Forty-eight Sprague-Dawley (SD) rats were randomly divided into a normal group (group A), a model group (group B), a moxibustion model group (group C) and a moxibustion model plus surgery group (group D), 12 in each group. Except for group A, rats in the other groups were treated with dehydrated ethanol and aspirin to prepare gastric mucosal damage model. The rats in group B were not treated with any interventions; rats in group C received moxibustion at Zusanli (ST 36), twice a day for continuous 3 d. The rats in group D were subjected to preparing the gastric mucosal damage model after the common peroneal nerve transection, followed by moxibustion at Zusanli (ST 36). After a 3-day intervention, ulcer index (UI) in each group was observed, and the levels of gastric mucosa-related repair cytokines of tumor necrosis factor-α (TNF-α), interleukin-4 (IL-4) and heat shock protein 70 (HSP70) were detected.Results: Compared with group A, the pathological changes and UI of group B were worse (P=0.000), but TNF-α in serum and tissue was changed significantly (P=0.000,P=0.002), IL-4 in serum and tissue was improved significantly (P=0.000, P=0.000). Compared with group B, TNF-α and IL-4 in group C and group D were significantly improved (TNF-α:P=0.003, P=0.016; IL-4:P=0.000,P=0.002). Compared with group C, the changes of UI in group B and group D were poor (both P=0.000); the levels of TNF-α and IL-4 in serum were significantly decreased (TNF-α:P=0.000,P=0.025; IL-4:P=0.000, P=0.034); and tissue HSP70 levels were decreased significantly (P=0.000,P=0.033).Conclusion: Zusanli (ST 36) can transmit information through the pathway of common peroneal nerve, regulate the release of gastric mucosal protective factors, and up-regulate the expression of cytothesis-related proteins, so as to achieve the effect in repairing gastric mucosa.

BACKGROUNDPlatelet-rich plasma (PRP) is a kind of natural source of autologous growth factors, and has been used successfully in medical community. However, the effect of PRP in periodontal regeneration is not clear yet. This study was designed to evaluate the effectiveness of PRP as an adjunct to bovine porous bone mineral (BPBM) graft in the treatment of human intrabony defects.

METHODSSeventeen intrabony defects in 10 periodontitis patients were randomly treated either with PRP and BPBM (test group, n = 9) or with BPBM alone (control group, n = 8). Clinical parameters were evaluated including changes in probing depth, relative attachment level (measured by Florida Probe and a stent), and bone probing level between baseline and 1 year postoperatively. Standardized periapical radiographs of each defect were taken at baseline, 2 weeks, and 1 year postoperatively, and analyzed by digital subtraction radiography (DSR).

RESULTSBoth treatment modalities resulted in significant attachment gain, reduction of probing depth, and bone probing level at 1-year post-surgery compared to baseline. The test group exhibited statistically significant improvement compared to the control sites in probing depth reduction: (4.78 +/- 0.95) mm versus (3.48 +/- 0.41) mm (P < 0.01); clinical attachment gain: (4.52 +/- 1.14) mm versus (2.85 +/- 0.80) mm (P < 0.01); bone probing reduction: (4.56 +/- 1.04) mm versus (2.88 +/- 0.79) mm (P < 0.01); and defect bone fill: (73.41 +/- 14.78)% versus (47.32 +/- 11.47)% (P < 0.01). DSR analysis of baseline and 1 year postoperatively also showed greater radiographic gains in alveolar bone mass in the test group than in the control group: gray increase (580 +/- 50) grays versus (220 +/- 32) grays (P = 0.0001); area with increased gray were (5.21 +/- 1.25) mm(2) versus (3.02 +/- 1.22) mm(2) (P = 0.0001).

CONCLUSIONSThe treatment with a combination of PRP and BPBM led to a significantly favorable clinical improvement in periodontal intrabony defects compared to using BPBM alone. Further studies are necessary to assess the long-term effectiveness of PRP, and a larger sample size is needed.

Adult ; Alveolar Bone Loss ; diagnostic imaging ; surgery ; Animals ; Blood Platelets ; physiology ; Bone Regeneration ; drug effects ; Bone Substitutes ; therapeutic use ; Bone Transplantation ; methods ; Cattle ; Combined Modality Therapy ; Female ; Follow-Up Studies ; Growth Substances ; therapeutic use ; Guided Tissue Regeneration, Periodontal ; methods ; Humans ; Male ; Middle Aged ; Minerals ; therapeutic use ; Plasma ; chemistry ; cytology ; Platelet Transfusion ; Radiography ; Transplantation, Heterologous ; Treatment Outcome

Objective To investigate the clinical results of initial periodontal therapy on chronic periodontitis patients with stable coronary heart disease. Methods Thirty-two chronic periodontitis patients with stable coronary heart disease were included in this prospective study. All subjects received oral hygiene instruction, scaling and root planing and clinically monitored for 3 months. The clinical parameters,including plaque index(PLI) , probing depth (PD) , attachment loss(AL) and bleeding index(BI) , were recorded at baseline and 3 months after treatment. Serum levels of high-sensitivity C-reactive protein (hs-CRP) , cholesterol (CHO) , triglyceride (TG) , high-density lipoprotein (HDL) , low-density lipoprotein(LDL) and glucose (GLU) were also measured. Results At 3 months after initial periodontal therapy, the mean PD of patients reduced from(3.95±0.15)mm to(2.93±0.21)mm(P＜0.01),the mean AL from(3.08±0.43)mm to(2.43±0.37)mm(P＜0.01),the percentage of sites with PD≥5 mm from (22.37±6.88)%to(3.00±1.80)%(P＜0.01).hs-CRP significantly decreased at 3 months after treatment compared with baseline[(2.71±2.69)mg/L vs.(1.99±2.14)mg/L,P＜0.05].CHO,TG,HDL,LDL and GLU decreased slightly(P＞0.05).Conclusions Initial periodontal therapy is effective for chronic periodontitis patients with stable coronary heart disease.After initial periodontal therapy,periodontal parameters improved significantly and serum levels of hs-CRP decreased.

Objective To observe the effect of non-surgical periodontal therapy on levels of lipoprotein-associated phospholipase A2 (LP-PLA2) and lipid profile markers in chronic periodontitis (CP)subjects with hyperlipidemia.Methods Forty CP subjects with hyperlipidemia (mean age 56.1 ± 10.3 years old,male 20,female 20) were enrolled.In addition to periodontal clinical parameters,serum concentrations of LP-PLA2,serum lipid profiles including total cholesterol (TC),triglyceride (TG),high-density lipoprotein(HDL),low-density lipoprotein (LDL),and white blood cell (WBC) counts were determined at baseline and 3 months after non-surgical periodontal therapy.Results After non-surgical periodontal therapy,all clinical parameters improved significantly [probing depth (PD):from 3.93 (3.63,4.48) mm to 2.47 (2.06,2.92) mm; clinical attachment loss:from 5.14(4.51,5.46) mm to 4.03 (3.38,4.33) mm; plaque index from 1.28 (0.94,1.61) to 0.77 (0.65,1,13) ; bleeding on probing percentage from 99.82％ (86.25％,100.00％) to 33.49％ (29.45％,43.30％) ; P ＜ 0.001.Levels of LP-PLA2,TC,TG and WBC counts were reduced significantly [LP-PLA2:from (30.06 ± 9.96) mg/L to (23.80 ± 14.76) mg/L,P =0.019; TC:from 5.57(5.26,6.25) mmol/L to 5.36(5.16,5.86) mmol/L,P =0.001 ; TG:from 1.79 (1.55,2.01) mmol/L to 1.57 (1.34,1.79) mmol/L,P ＜ 0.001 ; WBC counts:from 5.90(5.40,6.55) × 103 cell/L to 5.45(5.13,5.80) × 103 cell/L,P ＜0.001] ; HDL level increased significantly [from 1.12 (0.97,1.49) mmol/L to 1.23 (1.13,1.53) mmol/L,P =0.001] ; the reduction of LP-PLA2 (△LP-PLA2) was correlated with the reduction of PD (△PD) (r =0.367,P =0.020).Conclusions The results indicate that non-surgical treatment reduces systemic LP-PLA2 and WBC levels and improves lipid profiles.These results suggest that non-surgical periodontal therapy may reduce the risk of cardiovascular disease in some subjects with hyperlipidemia.