Objective To explore the clinical significance of combined detection of C‐reactive protein (CRP)and white blood cells (WBC)in children with anemopyretic tonsillitis .Methods A total of 284 patients with anemopyretic tonsillitis were divided into ex‐cessive pattern group (131 cases) ,wind‐heat invasion group (153 cases) ,other 120 healthy children were recruited into control group .The WBC ,percentage of neutrophils (NEU % ) ,percentage of lymphocytes (LYM % ) and CRP were analyzed among the three groups .Results WBC and NEU% in excessive pattern group and wind‐heat invasion groups were higher than those in the control group (P< 0 .05) ,CRP in wind‐heat invasion group was higher than that in excessive pattern group and the control group (P< 0 .05) .CRP in the excessive pattern group were higher than that in the control group (P< 0 .05) .When CRP cut‐off value in wind‐heat invasion group was 12 .65 mg/L ,the sensitivity was 90 .6% ,specificity was 86 .3% .Conclusion The combined detection of WBC and CRP have clinical value in differential diagnosis of children with anemopyretic tonsillitis .

OBJECTIVEThis study was about the influence of porcelain thickness on crack at interface.

METHODSThe effect of porcelain thickness on the flaw at the interface between porcelain and metal was studied in three groups with porcelain thickness of 0.5 mm, 1.5 mm and 2.5 mm (metal thickness of 0.5 mm) by means of moire interferometre and interfacial fracture mechanics. The parameter Jc was compared among the three groups and the growing of the flaw was observed.

RESULTSJc and the extreme strength of group with porcelain thickness of 0.5 mm (2.813 N/m and 9.979 N) were lower than those of the groups with porcelain thickness of 1.5 mm and 2.5 mm (5.395 N/m, 19.134 N and 5.429 N/m, 19.256 N). Flaws extend along the interface in the groups with porcelain thickness of 1.5 mm and 0.5 mm.

CONCLUSIONS(1) Fracture resistance of the interface in the groups with porcelain thickness of 1.5 mm and 2.5 mm is similar and it decreases in the group with 0.5 mm thick porcelain. (2) When porcelain is 1.5 mm or 0.5 mm thick, flaws will extend along the interface. When porcelain is 2.5 mm thick, flaws will extend into the porcelain layer.

Dental Porcelain ; Dental Stress Analysis ; Humans