Research Paper (postgraduate) from the year 2012 in the subject Chemistry - Other, grade: 3, language: English, abstract: Aims: To evaluate the effect of two prepared and commercial solution on surface roughness and tensile strength of highly impact acrylic denture base material Materials and Methods: The total number of specimens were one hundred and fifty. They were prepared from highly impact acrylic and subdivided into five groups for each solution (EDTA, Soda+H2O2, Lacalut, Corega and distilled water). Two laboratory tests were used for this research. Surface Roughness and tensile strength test. The surface roughness test specimens were constructed with dimensions (10×10×2±0.03mm) (length, width, and thickness respectively). According to ADA specification no.12 the tensile test specimens were constructed with dimensions 90×10×3±0.03mm (length, width, and thickness respectively). The immersion periods in this research are (2 day, 7 day and one month). ANOVA and Duncan multiple range test were used. The statistical results were considered significant at p 0.05. Results: the results showed that (soda+H2O2) has no significant change on the surface roughness and tensile strength of highly impact acrylic denture base material in (2d ay, 7 day, and 1 month) conclusion: (soda+H2O2) has the lowest effect on the surface roughness and tensile strength of highly impact acrylic denture base material in (2 day, 7 day, and 1 month) Key words: denture cleanser, highly impact, lacalut

Name: AMER A. TAQA Email: amertaqa@hotmail.com DEPARTMENT OF DENTAL BASIC SCIENCE COLLEGE OF DENTISTRY/MOSUL UNIVERSITY/IRAQ EDUCATION PhD in Inorganic Chemistry awarded in 2001. Dissertation Title " Preparation and study some of complexes that can be used as dental restorative. Advisor: Tahanee Al-Sandook and I.M.Ahmed. M.Sc in inorganic Chemistry awarded in 1991. Dissertation Title" Preparation and study some of uranium complexes with nitrones" Advisor: Wiseman Aziz. B.Sc in Chemistry awarded in 1985. EXPERIENCE Professor teaching in Dental Basic Science Mosul University 1993to present. Head of Dept. of Dental Basic Sciences - 2003 to 2005 Registrar of Dept. of Dental Basic Sciences -1995 to 2003 Professor 2009 Assistant Professor - 1999 Lecturer 1995 Assistant lecturer 1993 Postgraduate MSc Supervision Student in an inorganic Chemistry in Science College. Seven students in Prosthetic in Dentistry College. One student in orthodontic in Dental College. Three students in Operative in Dental College.