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Cocos nucifera l. (coir) fiber application as a filler and its effect on the volumetric shrinkage of flowable composite resin: an in vitro study cevanti, Twi agnita; Tameno, Yolanda Agustina; Mawarani, Lizda Johar; Akwan, Yulie Emilda; Prananingrum, Widyasri; Son, Meekyoung
Padjadjaran Journal of Dentistry Vol 37, No 1 (2025): March 2025
Publisher : Faculty of Dentistry Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol37no1.58864

Introduction: The use of composite resin as a restorative material has the disadvantage of experiencing volumetric shrinkage during polymerization, which can lead to restoration failure. Fiber-reinforced composites can reduce volumetric shrinkage in restorative materials. Coir fiber has the potential to replace synthetic fillers because its hollow fiber structure resembles foam, supporting a compact yet lightweight structure. This characteristic is expected to reduce the volumetric shrinkage of composite resin. This study aims to analyze the effect of coir fiber application as a filler on flowable composite resin on shrinkage, comparing it with flowable composite resin containing synthetic filler. Methods: The cellulose fiber used as a filler was synthesized from coir, while the matrix consisted of BisGMA and TEGDMA resins in a ratio 5:1. The composite was prepared with a coir fiber-to-matrix resin composition of 70:30, and polymerization was carried out by irradiation for 40 seconds. Volumetric shrinkage was tested 90 minutes after irradiation. The dimensions of the composite sample were measured from images captured using a digital microscope and analyzed with ImageJ software. The volume shrinkage was then calculated based on these dimensions. Shrinkage was further confirmed through SEM analysis of marginal adaptation tests. Results: The application of coir fiber as a filler effectively reduced the volumetric shrinkage of the composite compared to the composites with synthetic filler. Statistical analyses using the Mann-Whitney test results indicated that the type of filler in flowable composite resin had a significant effect, with a p-value of 0.047 (p<0.05). Conclusion: Application of coconut fiber as filler in flowable composite resin significantly reduce volumetric shrinkage, making it three times smaller than that of flowable composite resin with a synthetic filler.

Edukasi dan Motivasi Pemeliharaan Kesehatan Rongga Mulut dengan Sikat Gigi Kustom Modifikasi pada Siswa SLB YPAC Surabaya Soesilo, Diana; Akwan, Yulie Emilda; Syanti, Wanda Rahma
SENTRI: Jurnal Riset Ilmiah Vol. 4 No. 11 (2025): SENTRI : Jurnal Riset Ilmiah, November 2025
Publisher : LPPM Institut Pendidikan Nusantara Global

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55681/sentri.v4i11.4958

SLB YPAC Surabaya is a school for students with disabilities, particularly those with cerebral palsy, who experience motor limitations and therefore require specially adapted tools for maintaining oral health. To support oral hygiene, a three-sided toothbrush was used, allowing simultaneous cleaning of the buccal, occlusal, and lingual/palatal surfaces, with the handle modified using child-safe clay that is inexpensive, easy to shape, and readily available. Oral hygiene was assessed using plaque index scores with a plaque detector and halitosis scores with a halitosis detector, and both students and their assistants were taught how to create the customized toothbrush handle. Parents’ knowledge was measured through pre- and post-tests, while students’ oral health was evaluated through plaque and halitosis indices. Wilcoxon tests showed significant differences in parental knowledge (p=0.000) and in plaque and halitosis scores before and after using the modified toothbrush (p=0.002; p<0.05), indicating clear improvement. Therefore, the use of a three-sided toothbrush with a clay-based customized handle is effective in enhancing the oral hygiene of students with cerebral palsy.

Shear bond strength fissure sealant based on glass ionomer after topical fluor application: a comparison between sodium fluoride and acidulated phosphate fluoride Akwan, Yulie Emilda; Paramita, Annisa Listya; Rahmitasari, Fitria
Odonto : Dental Journal Vol 9, No 2 (2022): December 2022
Publisher : Faculty of Dentistry, Universitas Islam Sultan Agung

Background: Application of fissure sealants to young permanent teeth is one of the preventive measures for caries in the field of dentistry. Fissure sealants based on glass ionomer cement (GIC) have the advantage of releasing fluoride. Sodium fluoride and acidulated phosphate fluoride (APF) are remineralization agents because they can increase remineralization by altering hydroxyapatite to fluorapatite and this in turn makes fluorine able to increase pH. Fluoride can prevent caries by increasing remineralization of the enamel that has just been demineralized by acids produced by plaque bacteria. The aim of this study is to compare the shear bond strength fissure sealant based on glass ionomer between sodium fluoride and APF topical fluor applicationMethod: This research applied true experimental design with post test only control group design. The 21 maxillary permanent premolars were distributed into 3 groups, namely the control group (K1), the treatment group added 5% sodium fluoride (K2), and the treatment group added 1.23% APF (K3). Result: One Way ANOVA and post hoc LSD analysis test displayed no significant difference in each group. This could be due to the material used as a conditioner prior to the GIC application. The addition of fluoride ions will inhibit the demineralization process of the enamel produced by the application of conditioner. So it does not rule out that it will interfere with the attachment of the GIC material used as a fissure sealant in this research.Conclusion: There was no significant difference in shear bond strength of fissure sealant based on glass ionomer between sodium fluoride and acidulated phosphate fluoride topical application.

Shear bond strength fissure sealant based on glass ionomer after topical fluor application: a comparison between sodium fluoride and acidulated phosphate fluoride Akwan, Yulie Emilda; Paramita, Annisa Listya; Rahmitasari, Fitria
Odonto : Dental Journal Vol 9, No 2 (2022): December 2022
Publisher : Faculty of Dentistry, Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/odj.9.2.222-230

Background: Application of fissure sealants to young permanent teeth is one of the preventive measures for caries in the field of dentistry. Fissure sealants based on glass ionomer cement (GIC) have the advantage of releasing fluoride. Sodium fluoride and acidulated phosphate fluoride (APF) are remineralization agents because they can increase remineralization by altering hydroxyapatite to fluorapatite and this in turn makes fluorine able to increase pH. Fluoride can prevent caries by increasing remineralization of the enamel that has just been demineralized by acids produced by plaque bacteria. The aim of this study is to compare the shear bond strength fissure sealant based on glass ionomer between sodium fluoride and APF topical fluor applicationMethod: This research applied true experimental design with post test only control group design. The 21 maxillary permanent premolars were distributed into 3 groups, namely the control group (K1), the treatment group added 5% sodium fluoride (K2), and the treatment group added 1.23% APF (K3). Result: One Way ANOVA and post hoc LSD analysis test displayed no significant difference in each group. This could be due to the material used as a conditioner prior to the GIC application. The addition of fluoride ions will inhibit the demineralization process of the enamel produced by the application of conditioner. So it does not rule out that it will interfere with the attachment of the GIC material used as a fissure sealant in this research.Conclusion: There was no significant difference in shear bond strength of fissure sealant based on glass ionomer between sodium fluoride and acidulated phosphate fluoride topical application.

The Effect of Bismuth as A Local Hemostatic Material Post Extraction of Permanent Mandibular First Molars Teeth Monika Elidasari; Moh Basroni Rizal; Yulie Emilda Akwan
Denta Journal Kedokteran Gigi Vol 18 No 1 (2024): February
Publisher : Fakultas Kedokteran Gigi Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/denta.v18i1.6

Background: Bleeding is a post-extraction complication that is often found in dentistry. Normally post-extraction bleeding stops 12-24 hours after surgery, but it is often found for more than 24 hours. The post-extraction bleeding usually stops by pressing the area with sterile gauze but there is an obstacle due of the large volume of blood. Objective: to evaluate the bismuth subgallate as an effective local hemostatic agent. Methods: This study conducted on patients who came to the Oral Surgery Clinic, Nala Husada Hospital Surabaya, population aged 18-60 years, with permanent mandibular first molars diagnosed with chronic apical periodontitis et causa pulp gangrene or radix gangrene without systemic disorder and planned for extraction teeth with close method. It was divided into 2 groups by simple random sampling group design; the control group and the treatment group. After tooth extraction with the close method, a local hemostatic agent will be applied at the socket. The control group used a paste containing vaseline, while the treatment group used a paste containing bismuth subgallate. This paste contains 2.25% bismuth subgallate mixed with Peruvian balsam. After the application of local hemostatic agents, both the control group and the treatment group will be calculated the bleeding time, bleeding volume, and whether or not the secondary bleeding occurs. Conclusion: of this study is that bismuth subgallate has an effect as a local hemostatic agent after extraction of the mandibular first permanent molars.

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