Intoduction : PMMA or acrylic resin is a necessary material in dentistry for
denture bases, one of which is often used is heat cured acrylic resin or heat
polymerized acrylic resin. Garlic juice is a denture cleaner to inhibit bacteria and
is also an extrinsic factor that causes discoloration. Purpose: To determine the
duration of immersion in pure garlic juice which can cause discoloration of the
acrylic resin. M ethods: laboratory experiments with posttest only control group
design research. Results: The mean ± SD change in color of hot polymerized acrylic
resin after immersing in garlic juice for 2, 4, 6, 8 hours was 0.67 ± 0.22; 0.91 ±
0.31; 1.22 ± 0.32; and 1.56 ± 0.25. Conclusion: There is an effect of soaking time
with garlic juice on the base of denture acrylic resin on discoloration.