LAMA PEMBERSIHAN EFISIEN PAPAIN PADA PENGLEPASAN PLAK GIGITIRUAN

Everyday denture cleaning is needed to prevent the mouth from denture stomatitis and esthetic concern. Enzyme cleansers are developed in attempt to break down the organic components of denture plaque. The aim of this research is to determine the efficient cleansing duration of papain solution to remove 24-hour denture plaque. The research was done on 16 patients with complete dentures. Plaque removal was determined by Lowry method and SDS PAGE. The result shows that papain dose required to hydrolyze 24-hour dentue plaque is 15.66 TU/mg enzyme activity for 10 minutes soaking. Soaking the denture in papain for 10 minutes makes all of the detected plaque protein bands remobe. In conclusion, efficient cleansing duration of papain solution to remove 24-hour denture plaque is papain activity of 15.66 TU/mg by soaking duration of 10 minutes. Further research is suggested to examine papain residue on the denture that may influence the denture wearer biocompatibility

Effect Of Non Dental Glass Fiber Orientation On Transverse Strength Of Dental Fiber Reinforced Composite

FRC is widely used in dentistry especially for dental bridges construction. E glass fiber is commonly used because it has good properties and good bonding with polymers. Its availability is limited and its price quite expensive in Indonesia. Non dental glass fiber is available in Indonesia with lower price. The aim of this research was to evaluate the effect of non dental glass fiber orientation on transverse strength of dental FRC. Non dental glass fiber (HJ, China) with two orientations (Roving and Woven roving), Flowable composite (CharmFil Flow, DenKist, Korea) , Silane coupling agent (Monobond S, Ivoclar Vivadent, Liechtenstein) and distilled water. 24 specimens of non dental glass FRC, divided into 2 groups. The specimens was immersed in water for 24 hours and 7 days. The data were analyzed by Independent sample T-test. T-test analysis showed that for transverse strength with 24 hours water immersion there was a significant difference between the two orientation groups (p 0.05). In conclusion: there was different transverse strength between roving and woven roving orientation in dental FRC

Effect of immersion time in mouthwash on the flexural strength of polyethylene fiber-reinforced composite

Fiber-reinforced composite (FRC) fixed dentures are exposed to various oral environments. One of the ways in maintaining good oral condition is by using mouthwash. Questions have been araised about the safety of prolongeduse of mouthwash towards FRC. The aim of this study was to evaluate the effect of immersion time in mouthwash on the flexural strength of polyethylene FRC. The specimens used were polyethylene FRC (Construct, KerrLab, USA) and flowable composite resin (Master Flow Biodinamica, Brazil). Block shaped specimens (2x2x25 mm) was light cured (n=12). Specimens were divided into threek groups of immersion: Group 1 (without immersion); Group 2 (24 hour immersion); Group 3 (48 hour immersion). The mouthwash used was Listerine Multi-Protect (Johnson & Johnson, Indonesia) (21.6% alcohol content). Flexure strength was measured by Universal Testing Machine. The results showed the average strength value (MPa) for Group 1 was 91.318 ± 12.466, Group 2 was 62.253 ± 8.027, and Group 3 was55.033 ± 3.373. Statistical analysis (ANOVA) showed that immersion time in mouthwash influenced the flexural strength of polyethylene FRC (p<0.05). LSD0.05 showed there were significant differences of flexural strength between Group1-Group 2, Group 1-Group 3 but not for Group 2-Group 3. In conclusion, the flexural strength of polyethylene FRC were decreased by the immersion time in mouthwash

Effect of Bombyx mori silk-fiber volume on flexural strength of fiber-reinforced composite

Dental glass fiber is one of dental synthetic fibers that are widely used in dentistry as a dental resin reinforcement, such as in dentin replacement material. The availability of glass fiber is limited in Indonesia because it must be imported and relatively expensive. Bombyx mori silk-fiber is one of the strongest natural fiber derived from silkworm cocoon processing. Silk-fiber is used in medical applications as a post-surgical sutures, scaffolds for tissue engineering and drug delivery. The purpose of this study was to evaluate the effect of Bombyx mori silk-fiber volume on the flexural strength of fiber-reinforced composite (FRC). We used Bombyx mori silk-fiber (Perhutani Pati, Central Java, Indonesia) and flowable composite (Charmfil flow, Denkist, Korea) in this study. The FRC samples were divided into 4 groups consisting of fiber volumes of 0%, 5%, 10% and 15% (n = 4). Tests of flexural strength were performed according to ISO 4049. The results were analyzed using one way ANOVA (p<0.05). The study showed that the means of the flexural strength (MPa) of Bombyx mori silk-fiber FRC for volume of 0%, 5%, 10% and 15% were 149.2 ± 5.5; 127.6 ± 3.8; 110.9 ± 3.5; 71.2 ± 4.2. One-way ANOVA test showed that the means of FRC flexural strength on the four groups’ silk-fiber Bombyx mori volumetric were significantly different (p<0.05). This study concluded that Bombyx mori silk-fiber volumetric influences the flexural strength of fiber- reinforced composite. An increase in Bombyx mori silk-fiber volume decreases the flexural strength of FRC because there is a small gap due to the weak interfacial bonds between dental flowable composite and Bombyx mori silk-silk-fiber

EFFECT AMOUNT OF CIGARETTE SMOKING ON GINGIVAL EPITHELIUM THICKNESS : EFEK JUMLAH ROKOK SIGARET TERHADAP KETEBALAN EPITHEL GINGIVAL

Smoking is one of the most important risk factors for oral diseases. Tobacco smoking produces more than 4000 chemical materials. Gingival protects underlying tissue to oral environment. Cells of gingival epithelium are metabolic actively, and can be reacted to internal and external stimuli. The thickness of oral mucosa epithelium is related with the amount of cell or proliferation activity. This study aimed to investigate effect amount of cigarette smoking on thickness of gingival epithelium. This study was animal experimental laboratory study. This study used 40 males Rattus Norvegicus strain Spraque Dawley, and were divided into 4 groups. They were control, mild, moderate and severe smoker groups. The animal models were exposed 2 grams by pump and were euthanized with ketamine in the 7th day. Measurement of gingival epithelium thickness used hematoxylin eosin that was measured from basale to granular layer and 3 sites (in µm). Data were analyzed by one way anova. The results of this research showed that there was an increasing thickness of gingival epithelium of animal models. The highest of gingival epithelium thickness was in severe smoker groups. In conclusion, cigarette smoking influenced on gingival epithelium thickness

EFEK APLIKASI SERICIN PADA HIDROKSIAPATIT TERHADAP PERLEKATAN SEL OSTEOBLAS

Hydroxyapatite (HA) is often used as a human bone grai Modification of HA surface is developed to increase osseointegration process which is influenced by cells attachment surrounded the tissue. Sericin has polar side groups which acceleratecells attachment. The aim of this researchwas to determine the effectof sericin application over HA surface on the attachment of osteoblast cells. The research used HA synthesizedfrom gypsum (Kulon Progo, Yogyakarta). Sericin was extracted from silkworm cocoonsof Bombyx mori. Sericin of 0.01, 0.05, 0.1% were applied over HA discs surface (10 mm in diameter, 3 mm thick). The discs were inserted into osteoblastcells culture of MC3T3El for attachment test. The data were analyzed by ANOV A and LSD. The result showed that the amount of osteoblast cells attached to HA (7.60I0.42) was significantly difference (p0.05). In conclusion, sericin application over HA surface increased the amount of osteoblast cells attachment. Concentrations of sericin application over HA (0.01, 0.05, 0.1%) did not influence osteoblastcells attachment

The effect of silk concentration on the flexural strength of FRC as a Bone Graft

Bone fractures are mostly caused by trauma and disease. In the therapeutic process of bone healing which often meets some constraints, bone graft is mainly used to ensure that the healing process takes place. A fiber reinforced composite (FRC) is a popular bone graft material that is made to resemble bone properties. FRC is normally comprised of polymer matrix, hydroxyapatite filler, and fiber. Hydroxyapatite is a bioactive material widely used as a bone graft. Silk fiber is known as a reliable material to increase mechanical strength of the FRC. On this basis, this study aims to determine the effect of silk fiber concentration on the flexural strength of FRC. Fiber reinforced composite made of Bis-GMA/TEGDMA/ UDMA resin (CharmFil®, DenKist, Korea), hydroxyapatite (Bioceramic Laboratory, DTMI UGM) and silk fiber (Perhutani, Pati) were divided into three groups. Each group contained different silk fiber concentrations which were 1%, 5% and 10%. The flexural strength test was performed with 3-point bending test according to ISO 10477. The result showed that FRC with silk fiber 1%, 5% and 10% respectively had flexural strength of 61.21 ± 8.43 MPa, 62.97 ± 3.92 MPa and 85.01 ± 7.71 MPa. The result of one way ANAVA analysis showed that mean of FRCs flexural strength were significantly different between one treatment group to another. Thus, it is conclusive that silk fiber has a significant effect on FRCs flexural strength. The addition of 10% concentration of silk fiber is proven to increase FRCs flexural strength

Pelepasan Ion Kobalt dari Aloi CoCr L605 pada Saliva Asam

CoCr has high mechanical properties but may release ion in an acidic environment as in the oral cavity. Cobalt (Co) ion can release from CoCr alloy if such material is immersed in acidic environment.&nbsp; This situation may lead to several consequences including allergies and oral lesions. The aim of this research was to determine the influence of pH degree on acidic saliva to the Co ion release concentration of CoCr L605 alloy. This research used CoCr L605 alloy and artificial saliva. Twelve samples of CoCr L605 metal plates were made into (10x10x1.5) mm size. The samples were divided into three groups; each group immersed in 20 ml of artificial saliva for 14 days, 37o C. The pH variables for the groups are 3, 5 and 7. Co ion released was measured by Atomic Absorption Spectroscopy (AAS). Data analysis was performed by one-way ANOVA (Analysis of Variance). The result showed that the mean of concentration value of Co ion released for group pH of 3, 5 and 7 were (3.0970±0.612)ppm; (2.0250±0.609) ppm; and 0.000 ppm respectively. One-way ANOVA showed that pH degree of acidic saliva significantly influenced by the Co ion release concentration (p&lt;0.05). LSD test showed a significant difference between groups. The conclusion of this research was the less pH degree of saliva, the concentration of Co ion released of CoCr L605 alloy was higher

Strut Linker Geometry Improving Mechanical Behaviorof Coronary Stent

Stent is one of the common solution that is offered to the patient with atherosclerosis. An ideal stent should have good mechanical and biological properties. This research aims to analyze how importance strut linker geometry affect mechanical behavior of stent especially on recoil percentage, foreshortening percentage and fatigue safety factor prediction using finite element analysis. The result showed that strut linker geometry would specify the mechanical behavio

EFFECT OF NON DENTAL GLASS FIBER ORIENTATION ON TRANSVERSE STRENGTH OF DENTAL FIBER REINFORCED COMPOSITE

FRC is widely used in dentistry especially for dental bridges construction. E glass fiber is commonly used because it has good properties and good bonding with polymers. Its availability is limited and its price quite expensive in Indonesia. Non dental glass fiber is available in Indonesia with lower price. The aim of this research was to evaluate the effect of non dental glass fiber orientation on transverse strength of dental FRC. Non dental glass fiber (HJ, China) with two orientations (Roving and Woven roving), Flowable composite (CharmFil Flow, DenKist, Korea) , Silane coupling agent (Monobond S, Ivoclar Vivadent, Liechtenstein) and distilled water. 24 specimens of non dental glass FRC, divided into 2 groups. The specimens was immersed in water for 24 hours and 7 days. The data were analyzed by Independent sample T-test. T-test analysis showed that for transverse strength with 24 hours water immersion there was a significant difference between the two orientation groups  (p 0.05). In conclusion: there was different transverse strength between roving and woven roving orientation in dental FRC.