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Effectof sisal fiber(Agavesisalana)andsurfacetreatmenton transverse strength in acrylic resin denture base repair Maharani, Adella Syvia; Kusuma, Heriyanti Amalia; Wahyuningtyas, Endang
Indonesian Journal of Prosthodontic Vol 2, No 1 (2021): June 2021
Publisher : Indonesia Prosthodontic Association

Acrylic resin as a denture base material has a disadvantage;it is easily fractured.However, fractures can be re-paired.This study aimed to reveal the effects of sisal fiber (Agave sisalana) and surface treatment onthetrans-versestrengthinacrylicresindenturebaserepair.Alaboratoryexperimentwasconductedon30acrylic resin sam-ples with a size of 65x10x2.5 mm,consisting of group I(was on the repaired section),groupII(sisalwereto the repaired section) and group III (repaired were sisal fibers and applied with monomer). Transverse strength was measuredusinga universal testing machine.The data obtained were analyzed using1-wayANOVA.Theresults showedthat the lowest transverse strengthwas foundin group I(88.30Â±7.38MPa)andthehighest strength was in groupIII (133.45Â±8.38MPa).Based on the results of this study, it can be concluded that the use of sisal fiber and surface treatment can increase the transverse strength in acrylic resin denture base repair.

Effect of glass fiber non-dental’s length and position on the flexural strength of FRC Adella Syvia Maharani; Widjijono Widjijono; Endang Wahyuningtyas
Majalah Kedokteran Gigi Indonesia Vol 5, No 1 (2019): April
Publisher : Faculty of Dentistry, Universitas Gadjah Mada

Glass fiber non-dental has a similar composition to E-glass fiber dental that commonly used as fiber reinforced composite (FRC) materials in resin bonded prosthesis. Fiber effectiveness can be determined by the length and the position. The aim of this study was to examine the effect of glass fiber non dental’s length and position on the flexural strength of FRC in resin bonded prosthesis. This study has been done used 36 FRC samples with beam shaped (15 mm x 2 mm x 2 mm). Fiber reinforced composite samples were consisted of 9 groups (a combination between length: 4 mm, 6 mm, and 12 mm and position: compression, neutral, tension zone). The flexural strength was tested by universal testing machine and statistically analyzed using two-way ANOVA (p<0.05). The result showed that the lowest (compression, 4 mm) and the highest (tension, 12 mm) flexural strength were 104.30 ± 13.90 MPa and 166.18 ± 8.59 MPa. The two-way ANOVA test showed that variation of position, length, and interaction between placement-length had a significant effect on the flexural strength (p<0.05). The conclusion of this study was fiber position on compression zone with 4 mm length had the lowest flexural strength. In addition, fiber position on tension zone with 12 mm length had the highest flexural strength.

EFFECT OF SILICA COATING IN ACRYLIC ARTIFICIAL TEETH ON SURFACE ROUGHNESS, CONTACT ANGLE, AND GROWTH OF STREPTOCOCCUS MUTANS Adella Syvia Maharani; Pramudya Aditama; Murti Indrastuti; Suparyono Saleh
ODONTO : Dental Journal Vol 8, No 2 (2021): December 2021
Publisher : Faculty of Dentistry, Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/odj.8.2.106-112

ABSTRACTBackground: Acrylic resin artificial teeth is easily to have bacterial adhesion. It is necessary to perform a treatment on that surface, in order to reduce bacterial adhesion. This study aimed to reveal the effect of silica coating in acrylic resin artificial teeth on surface roughness, contact angle measurement, and the growth of Streptococcus mutans.Method: The study was conducted on two groups (n=16) of disk-shaped acrylic resin artificial teeth with a diameter of 10 mm and thickness of 2 mm. A 2% silica coating material was obtained by diluting 2 g silica nanoparticles on 100 ml of ethanol. Surface roughness, contact angle measurement, and the growth of Streptococcus mutans was measured using surface roughness measuring instrument, camera digital, and colony counter. The data obtained were then analyzed using T-test (p<0.05).Result: The results showed that the surface roughness and contact angle measurement in group I (0.29±0.08 μm); (79,49º ± 10,88º) was higher than group II (0.17±0.05 μm); (34,77º±0,05º). The growth of Streptococcus mutans in group I was also higher (32.28±3.75 CFU/ml) than group II (24.83±3.47 CFU/ml). Conclusion: The study concluded that there is an effect of silica coating on surface roughness, contact angle measurement, and the growth of Streptococcus mutans in acrylic resin artificial teeth.

EFFECT OF SILICA COATING IN ACRYLIC ARTIFICIAL TEETH ON SURFACE ROUGHNESS, CONTACT ANGLE, AND GROWTH OF STREPTOCOCCUS MUTANS Adella Syvia Maharani; Pramudya Aditama; Murti Indrastuti; Suparyono Saleh
Odonto : Dental Journal Vol 8, No 2 (2021): December 2021
Publisher : Faculty of Dentistry, Universitas Islam Sultan Agung

ABSTRACTBackground: Acrylic resin artificial teeth is easily to have bacterial adhesion. It is necessary to perform a treatment on that surface, in order to reduce bacterial adhesion. This study aimed to reveal the effect of silica coating in acrylic resin artificial teeth on surface roughness, contact angle measurement, and the growth of Streptococcus mutans.Method: The study was conducted on two groups (n=16) of disk-shaped acrylic resin artificial teeth with a diameter of 10 mm and thickness of 2 mm. A 2% silica coating material was obtained by diluting 2 g silica nanoparticles on 100 ml of ethanol. Surface roughness, contact angle measurement, and the growth of Streptococcus mutans was measured using surface roughness measuring instrument, camera digital, and colony counter. The data obtained were then analyzed using T-test (p<0.05).Result: The results showed that the surface roughness and contact angle measurement in group I (0.29±0.08 μm); (79,49º ± 10,88º) was higher than group II (0.17±0.05 μm); (34,77º±0,05º). The growth of Streptococcus mutans in group I was also higher (32.28±3.75 CFU/ml) than group II (24.83±3.47 CFU/ml). Conclusion: The study concluded that there is an effect of silica coating on surface roughness, contact angle measurement, and the growth of Streptococcus mutans in acrylic resin artificial teeth.

Candida albicans adherence on soft denture liner coated with silica and titanium nanoparticles Aditama, Pramudya; Maharani, Adella Syvia
Majalah Kedokteran Gigi Indonesia Vol 9, No 2 (2023): August
Publisher : Faculty of Dentistry, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/majkedgiind.82785

The soft liner of acrylic resin dentures, used to coat removable partial dentures, still has drawbacks in the easy attachment of Candida albicans fungus. A treatment on the surface of the acrylic resin denture soft liner is needed to reduce the attachment of Candida albicans. Silicon dioxide (SiO2) and titanium dioxide (TiO2) nanoparticles have antimicrobial properties because they can induce photocatalytic production. This study aims to determine the effect of silica and titanium coating concentration on the attachment of Candida albicans to the soft liner of an acrylic resin denture. This study used 48 samples for 2 types of research. Each research consisted of 4 groups with 6 samples each. The samples were disc-shaped, with a diameter of 10 mm and a thickness of 2 mm. Silica and titanium coating materials of 0.5%, 1%, and 2% were obtained by mixing each nanoparticles of 0.5 g, 1 g, and 2 g in 100 ml of ethanol. After the application of the coating, the attachment test of Candida albicans was carried out. Candida albicans in SDA media were counted using a colony counter. The analysis was carried out using a one-way ANOVA test for each experiment. The ANOVA results showed an effect of silica and titanium coating concentrations on the attachment of Candida albicans to the soft liner of an acrylic resin denture (F = 10.929; p < 0.05 for silica, and F = 9.830; p < 0.05 for titanium). The group with a 2% silica coating concentration had the least amount of Candida albicans among all groups (0.48 ± 0.98 x 107 CFU/ml), as well as the group with a 2% titanium coating concentration (0.30 ± 0.83 x 107 CFU/ml). In conclusion, this study shows that the concentration of silica and the 2% titanium coating is the most effective in preventing the attachment of Candida albicans to the soft liner of acrylic resin dentures.

Titanium oxide coating and acid etching on platelet activation in dental implants Maharani, Adella Syvia; Ismiyati, Titik; Aditama, Pramudya; Abdullah, Johari Yap; Aziz, Ihwanul
Majalah Kedokteran Gigi Indonesia Vol 10, No 1 (2024): April
Publisher : Faculty of Dentistry, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/majkedgiind.94366

Titanium is the most widely used dental implant material, but it requires surface treatment to improve osseointegration. While coating implants with TiO2, residue can arise, which may lead to contamination. To address this, 10% HF etching is added. This study investigated the effect of TiO2 coating using sputtering and HF etching on platelet activation in titanium dental implants. Laboratory experiments were conducted on titanium implants (Ø = 4 mm; length = 12 mm) treated with TiO2 coating and 10% HF etching. Twenty-four samples were divided into four groups (n = 6): Group I (TiO2), Group II (TiO2 + HF 5 min), Group III (TiO2 + HF 10 min), and Group IV (TiO2 + HF 20 min). Platelet activation was assessed using CD41 and CD62P expression markers. Data analysis employed one-way ANOVA and post hoc LSD test (p = 0.05). Platelet activation ranged from 20.31 ± 1.78% to 35.90 ± 3.81%. One-way ANOVA revealed a significant effect (p < 0.05) of both TiO2 coating and acid etching on activation. LSD post hoc test showed significant differences (p < 0.05) between all groups except for the 10 and 20-minute etching periods. TiO2 coating with 10 minutes of HF etching resulted in the optimal activation level.

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