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7 results for “Microhardness”
Assessment of Degree of Conversion and Knoop Microhardness of Different Resin Cementing Agents - Results
<p>Data from the results of the study entitled "Assessment of Degree of Conversion and Knoop Microhardness of Different Resin Cementing Agents".</p>
Microhardness for SDF group after Radiation Therapy
<p>The table shows microhardness values of 11 samples of SDF group after Radiation Therapy. Each microhardness value was determined by assessing 5 different sites on the enamel surface and the final SMH was noted.</p> <p>The microhardness for the SDF group ranged from 214.5-309.9 HV.</p> <p> </p>
Microhardness of control group teeth after Radiation Therapy
<p>The table shows microhardness values of 11 samples of control group after Radiation Therapy. Each microhardness value was determined by assessing 5 different sites on the enamel surface and the final SMH was noted.The microhardness values for the control group ranged from 70.68 - 93.44 HV.</p>
Data from: Chemo-mechanical characterisation of carious dentine using Raman microscopy and Knoop microhardness
<p>One of the aims in the clinical operative management of dental carious lesions is to remove selectively, the highly infected and structurally denatured dentine tissue, while retaining the deeper, repairable affected and intact, healthy tissues for long-term mechanical strength. The present study examined the correlation of chemical functional groups and the microhardness through the different depths of a carious lesion using Raman spectroscopy and Knoop microhardness testing. The null hypothesis investigated was that there was no correlation between Raman peak ratios (amide I: phosphate ν1) and equivalent Knoop microhardness measurements. Ten freshly extracted human permanent teeth with carious dentine lesions were sectioned and examined using high-resolution Raman microscopy. The ratio of absorbency at the amide I and phosphate bands were calculated from 139 scan points through the depth of the lesions and correlated with 139 juxtaposed Knoop microhardness indentations. The results indicated a high correlation (p<0.01) between the peak ratio and the equivalent Knoop hardness within carious dentine lesions. This study concluded that Raman spectroscopy can be used as a non-invasive analytical technology for in-vitro studies to discriminant the hardness of carious dentine layers by using the peak ratio as an alternative to the invasive, mechanical Knoop hardness test.</p>
Effect of radiotherapy on microhardness and surface morphology of pretreated primary teeth with silver diamine fluoride: an in vitro study
<p> Surface Microhardness (SMH) of the samples was tested by a Vickers microhardness testing machine (MITUTOYA, Japan) under a load of 50 grams for 10 seconds. The microhardness for each sample was assessed at five different sites within the sample, 300 µum <a href="#_msocom_4">]</a> apart from each other and their mean was considered as the final microhardness for that particular sample. Two representative samples for from each group that is 2 samples from SDF group and 2 samples from control group were prepared to be evaluated using carry out SEM (JEOL JSM-6380A). The samples were scanned at power of 100X, 500X and 1000X magnification and photomicrographs were taken to observe the structural changes in the enamel.</p> <p> </p>
Data from: Chemo-mechanical characterisation of carious dentine using Raman microscopy and Knoop microhardness
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Clinical Evaluation of Enamel Microhardness Using Tooth Whitening Agents
ClinicalTrials.gov study NCT07165366. IPD Sharing: NO. Countries: 1. Publications: 0.
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