BACKGROUND:Light-cured resin is a new kind of material with beautiful color, high strength, wide range of applications, easy-to-use and inexpensive features. Patients are wil ing to accept it because of less or no grinding of the teeth.
OBJECTIVE:To observe the effect of light-cured resin to fil the interdental space between maxil ary anterior teeth.
METHODS:A total of 32 patients aged 21-52 years were enrol ed, 107 teeth with 75 oversized maxil ary spaces, including 15 males and 17 females. One space between bilateral central incisors was found in 14 cases;three spaces between bilateral central incisors, left lateral incisor, and left canine were found in three cases;three spaces between bilateral central incisors, right lateral incisor, and right canine were found in two cases;four spaces between left central incisor, left lateral incisor, left canine, right central incisor, and right lateral incisor were found in three cases;three spaces between bilateral central incisors and lateral incisors were found in six cases;four spaces between left central incisor, left lateral incisor, right central incisor, right lateral incisor, and right canine were found in four cases. Al the oversized maxil ary spaces were fil ed with light-cured resin. Then, crown morphology, adaptation, color, degree of wear and loosening were observed during fol ow-up.
RESULTS AND CONCLUSION:After 3-year fol ow-up, 17 of 32 cases were successful in tooth repair:the crown morphology and tooth adaptation were good, and there was no prosthesis loosening or detachment and discoloration. The tooth space was repaired basical y in another nine cases:the crown morphology and tooth adaptation were not good enough, no prosthesis loosening or detachment was found, but there were some defects at the gingival margin and contact surface of teeth as wel as mild discoloration. Tooth repair failed in the other six cases with worse crown morphology and adaptation, prosthesis loosening or detachment, and severe discoloration, which need to be repaired again.

Objective:To pharmacognostically identify Selaginellae uncinatae Herba to provide reference for the identification and utilization of Selaginellae uncinatae Herba. Methods:On the basis of observing the characters, structure and microscopic characteris-tics of the powder, Selaginella uncinata Herba was identified by a TLC method using amentoflavone as the reference substance. The contents of total ash, acid insoluble ash and alcohol-soluble extracts in Selaginellae uncinatae Herba were detected as well. Results:The morphological identification, microscopic identification and TLC identification of the herb was respectively established. The content limits of the total ash, acid insoluble ash and alcohol soluble extract were preliminarily determined. Conclusion:The studies provide reference for the identification and quality evaluation of Selaginellae uncinatae Herba.

Objective To evaluate the significance of immediate early 1 (IE) mRNA detection by nucleic acid sequence-based amplification (NASBA) in the diagnosis of human cytomegalovirus (HCMV) infection after renal transplantation.Methods The expression of IE-mRNA and pp67-(mRNA) was detected by NASBA in 55 patients after renal transplantation, and pp65 antigenemia (assays) were done for all cases.Results Twenty cases were positive for IE-mRNA. Thirteen cases were suffered from CMV disease with symptoms. The sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of IE-mRNA by NASBA were 92.3 %, 80.9 %, 60.0 % and 97.1 %, respectively. Time to first IE-mRNA positive detection after transplantation was shortest, compared with pp67 and antigenemia (P

By digestion with concentration sulfate acid and fuming nitri c acid under refluxing coprecipitation with Fe(OH)3, colorimetry with phenylfluorone-cetyl trimethyl ammonium bromide (CTMAB), germanium (Ge) contents of 18 kinds of Chinese medicinal herbs were determined. The Ge contents in Ganoderma lucidum and oldenladia diffusa were higher than those of others (2.46 and 0.35 ?10-8, respectively).In this method, the recoveries of Ge added to various herbs were in the range of 91%~93%. The detection limit and coefficient variation were 198 ng/g and 0.89%, respectively.

Objective To study the adsorption technology of piceid on macroporous resin. Methods The extraction condition of piceid, the types of macroporous resin, the concentration of the sample of Rhizoma Polygoni cuspidati extract, the flow velocity of samples during adsorption were investigated and the leak curve was drawed to ascertain the optimal sample quantity. Results Resin D101 gave a better adsorption performance in the following technological conditions:the concentration of the sample of Rhizoma Polygoni cuspidati extract was 0.7774 mg/mL, the flow velocity of sample during adsorption 3BV/h, the optimal adsorption capacity of the resin was 10.88 mg/mL. Conclusion The procedure was simple, feasible and can be applied to industrial production.

[Objective]To study the feasibility and significance of a safe arthroscopic entrance technique to posterior compartment of the knee joint.[Method]Exploratory surgery of posterior compartment of 239 knee joints was performed by arthroscope or its working instruments through the combined entrances of anteromedial,anterolateral,intercondylar notch,posteromedial,posterolateral and trans-septal.Their results were evaluated.[Result]With this technique,complete arthroscopic visualization of the posterior compartment of knee joint and arthroscopic procedures for this compartment could be easily performed in 216 cases(239 knees),except 5 cases with arthro-stiffness.There occurred 1 case of saphenous nerve injury but no complications such as injuries of popliteal neurovascular structures.[Conclusion]Combined entrances of posterior compartment of knee joint is a satisfactory approach for arthroscopic surgery of posterior compartment of knee joint and can give a high efficiency and quality of arthroscopic surgery for posterior compartment of knee joint.

To find a new method to identify Mori Cortex and its adulterants by analysis their ITS2 sequence of barcode,total genomic DNA was isolated from Mori Cortex and its adulterants. Nuclear DNA ITS2 sequences were amplified,and purified PCR products were sequenced. Sequence assembly and consensus sequence generation were performed using the CodonCode Aligner V3.0. The Kimura 2-Parameter (K2P) distances were calculated us-ing software MEGA 4.0. Identification analyses were performed using BLAST1, Nearest Distance and neighbor-joining (NJ) methods. The results showed the intra-specific genetic distance of Mori Cortex was 0, which were lower than inter-specific genetic distances between Mori Cortex and its closely related species (0.003-0.343). The ITS2 region is an efficient barcode for identification of Mori Cortex and its closely related species, which provides a scientific basis for fast and accurate identification and new method of Mori Cortex.

This study was aimed to establish a qualitative model of near-infrared spectroscopy in order to accurately and rapidly identify several mineral Chinese medicinals from fossil including Os Draconis, Dens Draconis, Fossil Shell of Spirifer, and Fossil Crabs. The near-infrared diffuse reflectance spectroscopy combined with OPUS software was used to analyze the spectral characteristics of these samples. The pattern recognition method was explored through cluster analysis. And the accuracy of the model was verified. The results showed that these mineral Chinese medicinals from fossil had their characteristics absorption so that they can be quickly and accurately differentiated from each other through pattern recognition method. It was concluded that based on near-infrared spectroscopic mod-eling, these mineral Chinese medicinals from fossil including Os Draconis, Dens Draconis, Fossil Shell of Spirifer, and Fossil Crabs can be quickly and accurately identified.

This study was aimed to explore a new method to identify the original plant of Plantaginis Semen and its adulterants by the ITS2 regions. The second internal transcribed spacer (ITS2) of ribosomal DNA was amplified and sequenced by bidirectional sequencing of PCR products. Sequence assembly and consensus sequence generation were performed by using CodonCode Aligner. The ITS2 secondary structure was predicted using ITS2 database and web-sites. The phylogenetic tree was constructed by MEGA5. The results showed that the maximum intraspecific K2P dis-tance of Plantago asiatica was 0.009 9, while the minimum interspecific K2P distance was 0.497 6; the maximum in-traspecific K2P distance of P. depressa was 0.005 2, while the minimum interspecific K2P distance was 0.519 1. The ITS2 secondary structure showed that P. asiatica and P. depressa can be differentiated obviously from its adulterants. Different samples of P. asiatica and P. depressa were gathered together and can be distinguished from its adulterants by NJ tree. It was concluded that the ITS2 sequence was able to identify original plant of Plantaginis Semen and its adulterants correctly. It provided a new method for the identification of original plant of Plantaginis Semen.

Objective:To provide reference information for the further study and rational clinical application of Shuxuetong Injec-tion. Methods:Referred to the literatures on Shuxuetong Injection, the pharmacological actions and clinical application were intro-duced. Results:The development status of Shuxuetong Injection was summarized, and the pharmacological actions and clinical applica-tion were reviewed in the paper. Conclusion:When used alone or combined used with other medicines, Shuxuetong Injection have sig-nificant effects in the treatment of some cardiovascular and cerebrovascular diseases, especially ischemic stroke. However, the active constituents in Shuxuetong Injection still need further studies.