Nikolas Poulis1, Anthony Prombonas2, Stavros Yannikakis3, Thanasis Karampotsos4, Martha-Spyridoula Katsarou5, Nikolaos Drakoulis6. 1. Laboratory Associate, Department of Dental Technology, Faculty of Health and Caring Professions, Technological Educational Institute of Athens , Egaleo, Attica, Greece . 2. Associate Professor, Department of Dental Technology, Faculty of Health and Caring Professions, Technological Educational Institute of Athens , Egaleo, Attica, Greece . 3. Professor, Department of Dental Technology, Faculty of Health and Caring Professions, Technological Educational Institute of Athens , Egaleo, Attica, Greece . 4. Researcher, Department of Conservation of Antiquities and Works of Art, Faculty of Fine Arts and Design, Technological Educational Institute of Athens , Egaleo, Attica, Greece . 5. Post Doc Researcher, Department of Pharmaceutical Technology, Faculty of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens , Panepistimiopolis Zografou, Athens, Greece . 6. Assistant Professor, Department of Pharmaceutical Technology, Faculty of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens , Panepistimiopolis Zografou, Athens, Greece .
Abstract
INTRODUCTION: Surface integrity of dental elastomeric impression materials that are subjected to disinfection is of major importance for the quality of the final prosthetic restorations. AIM: The aim of this qualitative Scanning Electronic Microscopy (SEM) study was to reveal the effects of immersion or ozone disinfection on the surface of four dental elastomeric impression materials. MATERIALS AND METHODS: Four dental elastomeric impression material brands were used (two vinyl polysiloxane silicones, one polyether, and one vinyl polyether silicone). Total of 32 specimens were fabricated, eight from each impression material. Specimens were immersion (0.525% sodium hypochlorite solution or 0.3% benzalkonium chloride solution) or ozone disinfected or served as controls and examined with SEM. RESULTS: Surface degradation was observed on several speci-mens disinfected with 0.525% sodium hypochlorite solution. Similar wavy-wrinkling surface structures were observed in almost all specimens, when treated either with 0.3% benzalkonium chloride solution or ozone. CONCLUSION: The SEM images obtained from this study revealed that both immersion disinfectants and ozone show similar impression material surface alterations. Ozone seems to be non-inferior as compared to immersion disinfectants, but superior as to environmental protection.
INTRODUCTION: Surface integrity of dental elastomeric impression materials that are subjected to disinfection is of major importance for the quality of the final prosthetic restorations. AIM: The aim of this qualitative Scanning Electronic Microscopy (SEM) study was to reveal the effects of immersion or ozone disinfection on the surface of four dental elastomeric impression materials. MATERIALS AND METHODS: Four dental elastomeric impression material brands were used (two vinyl polysiloxane silicones, one polyether, and one vinyl polyether silicone). Total of 32 specimens were fabricated, eight from each impression material. Specimens were immersion (0.525% sodium hypochlorite solution or 0.3% benzalkonium chloride solution) or ozone disinfected or served as controls and examined with SEM. RESULTS: Surface degradation was observed on several speci-mens disinfected with 0.525% sodium hypochlorite solution. Similar wavy-wrinkling surface structures were observed in almost all specimens, when treated either with 0.3% benzalkonium chloride solution or ozone. CONCLUSION: The SEM images obtained from this study revealed that both immersion disinfectants and ozone show similar impression material surface alterations. Ozone seems to be non-inferior as compared to immersion disinfectants, but superior as to environmental protection.
Authors: William G Kohn; Jennifer A Harte; Dolores M Malvitz; Amy S Collins; Jennifer L Cleveland; Kathy J Eklund Journal: J Am Dent Assoc Date: 2004-01 Impact factor: 3.634