GC-MS Compositional Analysis of Essential Oil of Leaf and Fruit Rind of Citrus maxima (Burm.) Merr. from Coastal Karnataka, India.

Essential oils derived from plants by hydro distillation possess several medicinal properties. Citrus maxima (Burm.) Merr. fruit is nutritive, cardiotonic, refrigerant, in stomach troubles, puerperal sepsis and insanity; while leaves are useful in epilepsy, chorea, convulsive cough and stomach pain due to indigestion. Gas chromatography coupled with mass spectroscopy (GCMS) has been used for detection and identification of volatile components from the hydro-distillate from leaf and rind of Citrus maxima (Burm.) Merr. of Rutaceae. Yield of oil was more in rind (0.12%) compared to leaf (0.07%). Forty two and thirty four compounds were detected from leaf and fruit respectively, among which citronellol (28.26%) was the major component in the leaves while D-limonene (89.04%) in the rind. Volatile compounds responsible for various medicinal properties are identified from hydro-distillate of Citrus maxima (Burm.) Merr. from Dakshina Kannada using GC-MS.

Role of colors in prosthodontics: Application of color science in restorative dentistry.

Shade selection procedure depends on various factors including translucency, contour and surface texture. Tooth shade selection using a conventional means involves a high degree of subjectivity. Traditional shade guides are available that use several methods for quantifying shade. Technology-based systems provide with an advantage of natural looking restorations. They include RGB devices, colorimeters, spectrophotometers. The impact of the color science can be seen on various restorative materials ranging from ceramics to maxillofacial prosthetic materials.

Crestal bone preservation: A review of different approaches for successful implant therapy.

The level of bone crest surrounding the implant is of utmost significance to determine osseointegrated implant success, as preservation of marginal bone height is highly important for long-term dental implant survival. Various approaches have been described in the literature to prevent the crestal bone loss, including platform switching, non-submerged approach, scalloped implants, implant design modifications, progressive loading, immediate implant placement, etc. The purpose of this paper is to review all the possible methods to preserve the crestal bone, when each method should be used and their success rates in an attempt to address this complex problem of crestal bone resorption. "PubMed" and "Google Scholar" were used to find out any studies involving platform switching concept from 1990 up to 2009. Twenty-four studies involving methods for preservation of crestal bone were evaluated, which included 26% studies on platform switching, 22% on non-submerged approach, 17% on scalloped implants, 13% on progressive loading and 22% on immediate implant placement. Crestal bone preservation should be thought of starting from the design of the implant to be placed. The technique to be followed in a given case will depend upon the density of bone, force factors by the patient, bone volume and amount of soft tissues, etc. The best possible method or the combination of the methods should be used to preserve the crestal bone for the long-term success of the implants.

Relation between oral stereognosis and masticatory efficiency in complete denture wearers: an in vivo study

Aim: The purpose of the present study was to evaluate the possible association between the oral stereognostic ability and masticatory efficiency at the time of denture insertion and after 6 months in complete denture wearers. Methods: Sixty edentulous patients were selected. The study was conducted in two parts. First, on the day of denture fit-in oral stereognostic ability test was conducted,followed by masticatory efficiency was carried out. The patients were recalled for check up after 6months and the same test was performed again. Data were tabulated and analyzed statistically by paired t-test and Pearson’s correlation coefficient. Results: There was weak correlation between oral stereognosis and masticatory efficiency. Many opinions have been presented in the literature in the past regarding oral stereognosis. The issue whether oral stereognosis also helps inpatients’ adaptation towards complete denture prosthesis is still ambiguous. No consensus has been reached. This study is further an attempt to understand the basic physiology of oral stereognosis and whether there is any possible relation between oral stereognosis and masticatory efficiency.Conclusions: Within the limitation of this study, it can be concluded that oral stereognostic ability improves with time, which might be due to adaptation to the denture. As adaptation towardsdenture improves masticatory efficiency improves as well. This study showed that there might bea weak association between oral stereognosis and masticatory efficiency.