ABSTRACT
Everyday use of denture cleansers to prevent microbial colonization on dentures can affect the properties of the denture base material. Limited literature is available on the effects of denture cleanser on reinforced resins. This study aimed to evaluate and compare the effect of denture cleanser on the flexural and impact strength of conventional and reinforced heat cure acrylic resins. Materials and Methods: Rectangular shaped specimens were prepared for flexural and impact strength as per ISO 1567. The denture base resins used included conventional, high impact, nylon fiber reinforced and glass fiber reinforced heat cure acrylic resins. They were further categorized into subgroups A and B depending on immersion in distilled water or denture cleanser (3.8% sodium perborate based). The flexural strength and impact strength of specimens were measured. The study design is a observational case-control study. SPSS version 25 statistical analysis software was used, and the STROBE statement checklist was followed. Results: The mean flexural strength was highest for glass fiber reinforced heat cure resin followed by conventional heat cure resin, high impact heat cure resin and nylon reinforced heat cure resin, respectively. The mean impact strength was highest for high impact heat cure resin followed by glass fiber reinforced heat cure resin, conventional heat cure resin, and nylon fiber-reinforced resin respectively.Conclusion: All the denture base resins tested exhibited a decrease in flexural and impact strength following use of a denture cleanser.
El uso diario de limpiadores para prótesis dentales para prevenir la colonización microbiana en las prótesis puede afectar las propiedades del material base de estas. Existe literatura limitada sobre los efectos de los limpiadores de prótesis sobre resinas reforzadas. Este estudio tuvo como objetivo evaluar y comparar el efecto de un limpiador de prótesis sobre la resistencia a la flexión y al impacto de las resinas acrílicas de curado con calor convencionales y reforzadas. Material y Métodos: Muestras de forma rectangular se prepararon para testear la resistencia a la flexión y al impacto según ISO 1567. Las resinas de base de prótesis utilizadas fueron resinas acrílicas convencionales, de alto impacto, y de curado térmico reforzadas con fibra de vidrio o nylon. Posteriormente se clasificaron en los subgrupos A y B según la inmersión en agua destilada o limpiador de prótesis (3,8% de perborato de sodio). Se midieron la resistencia a la flexión y la resistencia al impacto de las muestras. El diseño del estudio fue de un estudio observacional de casos y controles. Se utilizó el software de análisis estadístico SPSS versión 25, y se siguió la guía de la declaración STROBE. Resultado: La resistencia a la flexión fue más alta para la resina de curado por calor reforzada con fibra de vidrio seguida de la resina de curado por calor convencional, la resina de curado por calor de alto impacto y la resina de curado por calor reforzada con nylon, respectivamente. La resistencia al impacto fue más alta para la resina de curado por calor de alto impacto seguida de la resina de curado por calor reforzada con fibra de vidrio, la resina de curado por calor convencional y la resina reforzada con fibra de nylon, respectivamente. Conclusión: Todas las resinas de base de prótesis probadas exhibieron una disminución en la resistencia a la flexión y al impacto después del uso de un limpiador de prótesis.
Subject(s)
Humans , Denture Bases , Denture Cleansers , Flexural Strength , Acrylic Resins , Dental ProsthesisABSTRACT
In this case, the patient was diagnosed with rheumatoid arthritis 5 years back. She had also developed symptomatic autoimmune hypothyroidism before 2 years which was managed by levothyroxine. She presented this time with inflammatory myopathy. The search of literature revealed very few cases having all these together. Inflammatory myopathies are heterogeneous group of disorders which include polymyositis (PM), dermatomyositis, and inclusion body myositis. Many features of these disorders overlap. These three conditions (rheumatoid arthritis, hypothyroidism, and PM) have similarities in genetic etiology and presentation. The association between them is discussed here
ABSTRACT
BACKGROUND:For General anaesthesia, Endo-tracheal intubation is doneSent from Yahoo Mail on Androidusually due to that catecholamine released & deleterious haemodynamic response there . to prevent that alpha agonist dexmedetomidine & NMDA antagonist MgSO4 was used.AIM: to prevent stress response by both pharmacological agentsMATERIAL & METHODS:Both dexmedetomidine 1mcg/kg & MgSO4 30mg/kg 50% were given over 10 min slowly before induction. HR,SBP, DBP were measured at -. After intubationResults: bothdecrease Stress responseCONCLUSION: Dexmedetomidine decreases stress response in comparison to MgSO4 as MgSO4 causes mild tachycardia.
ABSTRACT
Pippalimula (root of Piper longum Linn.) is the spice of Indian cuisine having immense therapeutic properties. The study was conducted to evaluate Physicochemical, phytochemical analysis and HPTLC analysis using specific solvent system for Pippalimula. Material and Methods: Fine powder of Grade I Pippalimula (root of Piper longum Linn.) and alchoholic extract were obtained and subjected to phytochemical analysis and chromatographic study. Discussion: Physicochemical analysis of the root was carried out. HPTLC analysis of the methanolic extract of the root powder was performed with Toluene: Ethyl acitate 9:1.(v/v) Conclusion: HPTLC analysis of root of Piper longum Linn.can provide standard analysis with selected solvent system and can be used as a reference for the authentication and quality control of the drug. The study will provide referential information for the correct identification of the crude drugs.