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All Journal Jurnal Material Kedokteran Gigi Indonesian Journal of Dentistry
Jayanti, Lira Wiet
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Dentistry Materials Science & Nanotechnology Medicine & Pharmacology Public Health

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Perubahan Warna Permukaan Resin Komposit Nanohybird Pasca Perendaman Dalam Cuko Pempek Khoirunnisa, Nabila Farah; Budiono, Budiono; Jayanti, Lira Wiet
Jurnal Material Kedokteran Gigi Vol 8 No 1 (2019): JMKG Vol 8 No 1 Maret 2019
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32793/jmkg.v8i1.408

Abstract

The development of science, technology and patient demands regarding restorative materials that are colored with teeth is currently higher. Dental-colored restoration materials are widely used, one of which is nanohybrid composite resin. The nanohybrid composite resin has a small and fine particle size of 0.04 um. Nanohybrid composite resins have many advantages, but they also have the disadvantage of liquid absorption properties which can cause discoloration. One of the liquids that cause discoloration is cuko pempek. Objective: To find out the surface color changes of nanohybrid composite resin after immersion in cuko pempek. Methods, an experimental laboratory study with a pre and post test only group design study design. Sample 16 pieces of nanohybrid composite resin measuring 10 x 2 mm. The sample was immersed using pempek cuko as much as 5 ml with a temperature of 37oC for 7 days. Color change is measured with a spechtrophotometer (UV-2401 PC). Results, there was a change in the surface color of nanohybrid composite resin soaked with pempek cuko which marked an average increase in dE*ab before immersion (18.5925) and after immersion (23.3169) with a difference of 4.7844. The paired t test results also showed a significant color change that is p = 0,000 (p <0.05). Conclusion, there is a change in the surface color of the post-immersion nanohybrid composite resin in pempek cuko.
THE INHIBITORY EFFECT OF BAMBOO CHARCOAL EXTRACT ON THE GROWTH OF STREPTOCOCCUS MUTANS Sekarningrum, Galih Prawesty Ayu; Aminah, Siti; Jayanti, Lira Wiet; Anwar, Risyandi
Indonesian Journal of Dentistry Vol 5, No 2 (2025): August 2025
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/ijd.v5i2.17549

Abstract

ABSTRACTBackground: Streptococcus mutans is the primary cause of dental caries due to its acidogenic and aciduric properties. Natural antibacterial agents, such as bamboo charcoal extract, have been explored as potential alternatives to synthetic antimicrobial agents. However, the effectiveness of bamboo charcoal extract in inhibiting Streptococcus mutans remains uncertain. This study aimed to evaluate the antibacterial potential of bamboo charcoal extract at various concentrations.Methods: This research was conducted using a laboratory experimental method. The number of samples per group was determined using the Federer formula (t−1)(n−1)≥15, where t is the number of treatment groups and n the number of replications. With seven groups (six concentrations of bamboo charcoal extract and one positive control), a minimum of three replications per group was required, resulting in 21 samples in total. Bamboo charcoal extract was prepared through maceration using 96% ethanol and tested at concentrations of 0%, 12.5%, 25%, 37.5%, 50%, and 62.5% against Streptococcus mutans using the disk diffusion method. A 0.2% chlorhexidine solution served as the positive control. Inhibition zones were measured after a 24-hour incubation at 37°C.Results:  Statistical analysis using descriptive analysis showed no significant difference in inhibition zones. None of the bamboo charcoal extract concentrations demonstrated antibacterial activity against Streptococcus mutans. In contrast, the positive control (0.2% chlorhexidine) produced a significant inhibition zone of 12.56 mm.Conclusion:  Bamboo charcoal extract at concentrations of 12.5%, 25%, 37.5%, 50%, and 62.5% did not show any inhibitory effect on the growth of Streptococcus mutans.
Co-Authors Budiono Budiono Khoirunnisa, Nabila Farah Risyandi Anwar Sekarningrum, Galih Prawesty Ayu Siti Aminah