Objective:The aim of this study was to compare color stability and surface topography of three different feldspathic porcelains both qualitatively and quantitatively after exposure to routinely consumed beverages over different time periods using a Spectrophotometer, Stereomicroscope and Surface roughness tester, respectively.Materials and Methods:A total of 90 plastic discs were casted to obtain metal dies for three different newer ceramic applications each on thirty samples. The color and surface roughness of these samples were measured using stereomicroscope and surface roughness tester following which they were kept in different test solutions for different durations and revaluated for color changes and surface roughness in the similar manner.Results and Conclusion:Among all the five test solutions, Coffee showed the maximum staining of the ceramic whereas maximum surface roughness was shown by the Duceram Kiss (1.48 μm) by Orange Juice which could be due to its high titratable acidity.

Among deproteinizing agents, deproteinization when carried out with bromelain gel and sodium hypochlorite showed effective bond strength as compared to papain.

Due to their anatomical position, the surgical removal of impacted third molars results in oedema, pain, and trismus. The purpose of this study was to evaluate the efficacy of four different routes of administration of methylprednisolone on oedema, trismus and pain after lower third molar surgery. This randomized, perspective, and controlled study included 150 patients. The patients were randomly divided into five groups: Group A (control; no steroids), Group B (Submucosal injection), Group C (oral tablets), Group D (i.v. injection) and Group E (Intramuscular Injection). On days 2 and 7 following surgery, linear oedema was determined using facial landmarks, and maximal mouth opening was measured. Postoperative mouths opening and swelling were evaluated for each route of methylprednisolone administration and compared. The female (59%) to male (41%) ratio was 1.44; the mean age of the patients was 29.6 years. The level of significance was set at P < 0.01 for mouth opening and P < 0.05 for oedema. With regard to trismus, all four routes of administration demonstrated better efficacy in comparison to the control. While oral administration and i.v. injection of methylprednisolone achieved similar results, masseter injection provided better results in reducing oedema and trismus when compared with the control following lower third molar surgery.

For any treatment plan to succeed, two factors are paramount correct selection and application of pharmacologic agents and patient compliance. But what happens when both these are followed judiciously, but the medicine itself does not stay long enough to finish its action? Then we need something that will make the medicine stick literally. That is when bioadhesives have their say. Long-term adhesion of drugs to the oral mucosa is usually prevented by the continuous salivary flow and the mechanical movements of the tongue. Therefore, formulations acting as vehicle for local drug delivery to the oral mucosa need to have excellent mucoadhesive properties. The present article reviews mucoadhesive systems with various formulations that can be used in dentistry to improve local drug delivery.

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