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<span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>Hybrid ionomer cement or resin modified glass ionomer cement is a developed form of conventional glass ionomer cement. This </em><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>hybrid ionomer cement can be eroded if in direct contact with acid solution which will affect surface hardness. The aim of this study </em><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>is to learn surface hardness of hybrid ionomer cement after immersion in methyl salicylate 0.06% (pH 3.6) and povidon iodine 1% </em><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>(pH 2.9) solution. Sample of hybrid ionomer cement with 5 mm diameter and 3 mm thickness was immersed in sterile aquadest </em><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>solution (control), methyl salicylate pH 3.6, povidon iodine pH 2.9 for 1 minute, 7 and 14 minutes. Surface hardness was measured </em><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>with Micro Vickers Hardness Tester. The obtained data was analyzed statistically with ANOVA followed by LSD test. The result of </em><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>hybrid ionomer cement after immersion in sterile aquadest, methyl salicylate 0.06% pH 3.6 and povidon iodine 1% pH 2.9 for one </em><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>minute, showed no significant difference; while immersion for 7 and 14 minutes showed a significant difference. The conclusion </em><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>states that hybrid ionomer cement after 14 minutes immersion in povidon iodine 1% pH 2.9 has the lowest surface hardness.</em></span></span></span></span></span></span></span></span><br style="font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" /></span>