A controlled-release device (CRD) containing chlorhexidine gluconate, such as PerioCol™CG (Eucare Pharmaceuticals Pvt. Ltd,, Chennai, India), for subgingival application has little reported data with ...clinical as well as antimicrobial efficacy. This study evaluated clinical and subgingival microbial changes on using indigenously developed PerioCol™CG as an adjunct to scaling and root planing (SRP) in the treatment of chronic periodontitis. Forty posterior first molar sites having probing pocket depth ≥5 mm were selected and divided into two groups, with 20 sites in each group, in a split-mouth design. Group A (test site) was treated with SRP and PerioCol™CG, while group B (control site) was treated with SRP alone. Subgingival microbial samples were collected at baseline and 1 month after the initial SRP, while probing depth (PD), clinical attachment level (CAL) and gingival index (GI) were recorded at baseline, after 1 month and after 3 months. Microbial detection of
Porphyromonas gingivalis
(
P. gingivalis
) and
Tannerella forsythia
(
T. forsythia
) was done by means of polymerase chain reaction (PCR). A significant improvement was observed in all clinical measures in sites treated with PerioCol™CG as compared to the control sites during the study period. Also, there was a statistically significant reduction in the proportion of occurrence of
P. gingivalis
and
T. forsythia
after intervention in test sites as compared to control sites. Our data suggest that SRP combined with subgingival administration of PerioCol™CG has a significantly better and prolonged effect compared to SRP alone on the PD, clinical attachment loss and elimination of periodontopathogens.
Ultrasonography guided core biopsy has become the standard of care in the assessment of breast cancer. Although the procedure is associated with low rates of complications, we present a case report ...of a rare complication of the procedure that has been reported only once previously in the medical literature.
A formalism is presented for the computation of entropy of mixing of the structurally inhomogeneous liquid alloys having intermediate range ordering in real space, which is prominently manifested by ...first sharp diffraction peak i.e. prepeak in their structural data at and around the stoichiometric compositions. These are usually classified as liquid alloys having chemical short range ordering. In this paper, the present method of computation of entropies is applied to Li–Pb and Na–Pb alloys based on a partial charge transferred hard-sphere model. The entropies of mixing are computed and compared with the experimental data. The theoretical outcomes are in a very good agreement with experimental results.
This paper describes the development and implementation of a wind turbine emulator (WTE), based on a d.c. motor, using LabVIEW. The emulator imitates both static and dynamic characteristics of a ...typical wind turbine (WT) of a wind energy conversion system (WECS). The setup can be used for development and testing of real-time control algorithms. The laboratory setup consists of a d.c. motor coupled to a three-phase self-excited induction generator (SEIG). The mathematical model of WT, designed in LabVIEW, is interfaced with the d.c. motor control circuit by the compact real-time I/O module (cRIO). The armature current is regulated by armature voltage control with appropriate switching signals for a power MOSFET-based control circuit. The simulation and experimental results under different scenarios prove the effectiveness of this LabVIEW-based WTE. This WTE can be effectively used as a laboratory-based teaching tool for electrical engineering students. The learning objective of this simple yet efficient laboratory setup is to study the WT characteristics in the absence of a real WT. A manual and a list of questions have been prepared related to the experiment and have been used at the Indian Institute of Technology Kharagpur (India). The learning performances of the students have been evaluated based on a questionnaire.
The CMS experiment at the LHC features the largest Silicon Strip Detector ever built. The impact of the operating conditions and physics requirements on the design choices of the CMS Silicon Tracker ...is reviewed. The readiness of the Silicon Strip Tracker for the tentatively scheduled CMS commissioning in Summer 2008 is briefly described.
Pilgered Zircaloy-4 was subjected to recrystallization annealing at 650
°C: temperature sufficient for primary recrystallization but inadequate for noticeable competitive grain coarsening. Associated ...microstructural developments were monitored through bulk and microtexture measurements. The deformed microstructure had two, generalized, types of grains: fragmenting/deforming and non-fragmenting/non-deforming. The former had higher stored energy of cold work and defined the early recrystallization stages through preferred nucleation. Non-fragmenting grains, on the other hand, did not contribute directly to recrystallization; but provided significant growth inhibition or pinning to the recrystallized grains. A combination of these two mechanisms defined the recrystallization behavior of pilgered Zircaloy-4.
: Background/aims: A healthy mouth harbours the continuous combined action of a salivary defence system with that of a salivary peroxidase system, containing lactoferrin, lysozyme, immunoglobulin ...and growth factors. This system maintains neutral pH and creates an oral environment where harmful bacteria are inhibited, thus preventing the formation of biofilms. The objective of this clinico‐microbiological trial was to evaluate the anti‐plaque effect of a dentifrice containing salivary substitutes, compared with a placebo‐control dentifrice and to assess the effect of dentifrice on oral bacterial count.
Methods: The design was a randomized controlled, double‐blind, parallel study comparing a placebo‐dentifrice to a dentifrice formulation containing salivary substitutes. Toothpaste slurry rinses were used over a 96‐h period by 20 volunteers who refrained from all other oral hygiene procedures. Commercially available fluoride toothpaste was used as control. Plaque was scored and unstimulated salivary samples were collected at day 0 and after 4 days. A microbiological analysis was carried out for the salivary samples. Data were analyzed by using Student’s t‐tests.
Results: There was a statistically significant mean difference in plaque scores after using test paste (1.19 + 0.31) in comparison with those using placebo toothpaste (1.95 + 0.33). The difference between mean increase in colony forming units for the test and the placebo group was (25.2 + 8) × 105 and (17.5 + 6.01) × 105, respectively, which was statistically significant.
Conclusions: The findings of the study support the hypothesis that toothpaste containing salivary substitutes prevents dental biofilm formation and exhibits antimicrobial property when compared with a placebo dentifrice.
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