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Efek lama perendaman basis gigi tiruan nilon termoplastik dalam ekstrak lidah buaya dan alkalin peroksida terhadap jumlah Candida albicans: studi eksperimental Pasaribu, Gabriel Gomgom Nicholas; Dahar, Eddy
Jurnal Kedokteran Gigi Universitas Padjadjaran Vol 36, No 2 (2024): Agustus 2024
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jkg.v36i2.55036

ABSTRAKPendahuluan: Nilon termoplastik bersifat cenderung menyerap air yang akan meningkatkan kekasaran permukaan basis sehingga meningkatkan kontaminasi mikroba, seperti Candida albicans. Pembersihan gigi tiruan sangat penting dilakukan untuk mencegah terjadinya infeksi, seperti denture stomatitis. Ekstrak lidah buaya dapat digunakan sebagai bahan pembersih alami dengan kandungan antrakuinon yang bersifat antijamur. Penelitian ini bertujuan untuk menganalisis perbedaan lama perendaman basis gigi tiruan nilon termoplastik dalam ekstrak lidah buaya 75% selama 15 menit, 4 jam, 6 jam, dan 8 jam serta alkalin peroksida selama 15 menit terhadap jumlah Candida albicans. Metode: Penelitian ini adalah penelitian eksperimental laboratoris dengan sampel nilon termoplastik berbentuk cakram berukuran 10 x 2 mm sebanyak 24 sampel yang terbagi menjadi 6 kelompok, yaitu kelompok akuades 8 jam (Kelompok A), ekstrak lidah buaya 75% 15 menit (Kelompok B), 4 jam (Kelompok C), 6 jam (Kelompok D), dan 8 jam (Kelompok E) serta alkaline peroksida 15 menit (Kelompok F). Jumlah Candida albicans pada masing-masing sampel dihitung menggunakan colony counter. Hasil: Berdasarkan uji univariat nilai rata-rata dan standar deviasi jumlah Candida albicans pada kelompok A adalah 429,75 ± 2,63 CFU/ml, kelompok B adalah 323,25 ± 3,30 CFU/ml, kelompok C adalah 196,00 ± 3,16 CFU/ml, kelompok D adalah 154,25 ± 3,30 CFU/ml, kelompok E adalah 53,75 ± 7,54 CFU/ml, dan kelompok F adalah 0,00 CFU/ml. Hasil uji Kruskal-Wallis diperoleh nilai p = 0,001 (p<0,05) dan uji Mann-Whitney diperoleh nilai p<0,05. Simpulan: lama perendaman basis gigi tiruan nilon termoplastik dalam ekstrak lidah buaya dan alkalin peroksida berefek terhadap jumlah Candida albicans.Effect of immersion time thermoplastic nylon in Aloe vera extract and alkaline peroxide on Candida albicans: experimental studyIntroduction: Thermoplastic nylon has a tendency to absorb water, which can increase the surface roughness of the denture base, leading to increased microbial contamination, such as Candida albicans. Proper denture cleaning is crucial to prevent infection like denture stomatitis. Aloe vera extract, containing anthraquinone compound with antifungal properties, can be used as a natural cleaning agent. This study aims to determine the effect of different soaking durations of thermoplastic nylon denture bases in 75% aloe vera extract for 15 minutes, 4 hours, 6 hours, and 8 hours, as well as in alkaline peroxide for 15 minutes, on the amount of Candida albicans. Methods: This is an laboratory experimental study using 24 thermoplastic nylon disc-shaped samples measuring 10 x 2 mm, divided into six groups: Group A (8-hour soaking in distilled water), Group B (15-minute soaking in 75% aloe vera extract), Group C (4-hour soaking in 75% aloe vera extract), Group D (6-hour soaking in 75% aloe vera extract), Group E (8-hour soaking in 75% aloe vera extract), and group F (15-minute soaking in alkaline peroxide). The number of Candida albicans colonies on each sample was counted using a colony counter. Results: The univariate showed that the mean and standard deviation of Candida albicans counts were 429.75 ± 2.63 CFU / ml for Group A, 323.25 ± 3.30 CFU / ml for Group B, 196.00 ± 3.16 CFU / ml for Group C, 154.25 ± 3.30 CFU / ml for Group D, 53.75 ± 7.54 CFU / ml for Group E, and 0.00 CFU / ml for Group F. The Kruskal-Wallis test results obtained a p-value of 0.001 (p < 0.05), and The Mann-Whitney test also showed p < 0.05. Conclusion: The soaking duration of thermoplastic nylon denture bases in aloe vera extract and alkaline peroxide significantly affects the amount of Candida albicans.

The Effect of Immersion Duration in Cinnamon Extract on Color Stability of Heat-Polymerized Acrylic Resin Denture Base Veronica Angelia; Eddy Dahar; Satriawan Jodi
Dentika: Dental Journal Vol. 27 No. 2 (2024): Dentika Dental Journal
Publisher : TALENTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/dentika.v27i2.11817

Heat polymerized acrylic resin is a material that is often used as a denture base. Cinnamon extract (Cinnamomum burmannii) has the ability to inhibit the growth of Candida albicans. However, ideally, denture cleaning agents should not affect the color stability of heat polymerized acrylic resin. The aim of this study was to evaluated the effect of immersion duration in cinnamon extract simulating 1, 2, 3, 4, and 5 years of use on colour stability of heat-polymerized acrylic resin denture base. Thirty unit samples heat polymerized acrylic resin with measurment 20 x 3 mm divided into 2 groups, group A (Aquabidest) B (alkaline peroxide), and C (50% cinnamon extract). After measuring the pretest values, the samples were soaked for 5 minutes each day simulated 1, 2, 3, 4, and 5 years of use. Discoloration (âˆ†E) was evaluated using a colorimeter according to CIELAB (Commision de l'ECLAIRAGE) standards. Data were analyzed using one-way ANOVA and LSD (Least Significant Difference) statistical tests. There is an effect of immersion duration of heat polymerized acrylic resin denture base in use for 1, 2, 3, 4, and 5 years in groups A and B on colour stability 0.0001 (p<0.05). The colour change in group B was greater than that in group A, the âˆ†E value of all samples in both groups continued to increase with the length of immersion duration. However, the colour change that occurred is still clinically acceptable.

Pengaruh perendaman soft denture liner autopolimerisasi berbahan silikon dalam larutan natrium hipoklorit terhadap penyerapan air dan stabilitas warna : studi eksperimental Auliana, Amirah Najla; Dahar, Eddy; Wahyuni, Siti
Padjadjaran Journal of Dental Researchers and Students Vol 8, No 3 (2024): October 2024
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjdrs.v8i3.58243

ABSTRAKPendahuluan: Penggunaan soft denture liner (SDL) jangka panjang dapat menciptakan lingkungan anaerobik di rongga mulut, yang mendukung pertumbuhan Candida albicans dan meningkatkan risiko denture stomatitis. Natrium hipoklorit 0,5% efektif menghambat pertumbuhan ini. Penelitian ini bertujuan untuk mengetahui pengaruh perendaman dan perbedaan pengaruh lama perendaman SDL berbahan dasar silikon dalam natrium hipoklorit terhadap penyerapan air dan stabilitas warna selama 2,5 dan 5 hari. Metode: Rancangan penelitian adalah eksperimental laboratoris dengan 24 sampel SDL (15×2 mm) dibagi menjadi 4 kelompok. Kelompok A dan C direndam dalam natrium hipoklorit 0,5%, sedangkan B dan D dalam akuades selama 2,5 dan 5 hari. Penyerapan air diukur dengan timbangan analitik, dan stabilitas warna diuji dengan colorimeter CS-10. Analisis data menggunakan uji T independen. Hasil: Berdasarkan uji T Independen terdapat pengaruh signifikan pada perendaman SDL dalam natrium hipoklorit 0,5% selama 2,5 dan 5 hari terhadap penyerapan air dengan nilai p=0,005 dan p=0,0001. Terdapat pengaruh signifikan pada perendaman SDL dalam natrium hipoklorit 0,5% selama 2,5 dan 5 hari terhadap stabilitas warna dengan nilai signifikansi keduanya p=0,0001. Terdapat perbedaan pengaruh lama perendaman antara kelompok perendaman SDL dalam natrium hipoklorit 0,5% selama 2,5 hari dengan 5 hari terhadap penyerapan air dengan nilai signifikansi p=0,0001 dan terdapat perbedaan pengaruh lama perendaman antara kelompok perendaman SDL selama 2,5 hari dengan 5 hari terhadap stabilitas warna dengan nilai signifikansi p=0,0001. Simpulan: Penggunaan natrium hipoklorit sebagai bahan pembersih SDL dapat memengaruhi penyerapan air dan stabilitas warna, konsentrasi 0,5% dapat digunakan sebagai bahan pembersih karena masih berada dalam rentang nilai yang dapat diterima secara klinisKATA KUNCI: Soft denture liner, natrium hipoklorit 0,5% , penyerapan air, stabilitas warnaImmersion Effect of Autopolymerization Silicon Soft Denture Liner in Sodium Hypochlorite Solution on Water Absorption and Color StabilityABSTRACTIntroduction: The long-term use of soft denture liner (SDL) can create an anaerobic environment in the oral cavity, which supports the growth of Candida albicans and increases the risk of denture stomatitis. Sodium hypochlorite (0.5%) is effective in inhibiting this growth. This study aims to investigate the effects of immersion and the differing durations of immersion of silicone-based SDL in sodium hypochlorite on water absorption and color stability over 2.5 and 5 days. Methods: This study is a laboratory experimental design involving 24 SDL samples (15×2 mm) divided into four groups. Groups A and C were immersed in 0.5% sodium hypochlorite, while groups B and D were immersed in distilled water for 2.5 and 5 days. Water absorption was measured using an analytical balance, and color stability was assessed with a CS-10 colorimeter. Data analysis used an independent T-test. Results: The independent T-test indicated significant effects of immersing SDL in 0.5% sodium hypochlorite for both 2.5 days and 5 days on water absorption, with p-values of 0.005 and 0.0001. There was also a significant effect on color stability for both durations, with a significance value of p=0.0001. There were significant differences in the effects of immersion duration between the 2.5-day and 5-day groups regarding both water absorption and color stability, with significance values of p=0.0001. Conclusion: The use of sodium hypochlorite as a SDL cleaner can affect water absorption and color stability; a 0.5% concentration can be used as a cleaning agent because it remains within a clinically acceptable range.KEY WORDS: Soft denture liner, 0.5% sodium hypochlorite, water absorption, color stability

Perbedaan efek perendaman basis gigi tiruan nilon termoplastik dalam ekstrak lidah buaya (Aloe vera) dan alkalin peroksida terhadap kekasaran permukaan: studi eksperimental Nasution, Rizki Nurul Fadilah; Dahar, Eddy
Jurnal Kedokteran Gigi Universitas Padjadjaran Vol 36, No 2 (2024): Agustus 2024
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jkg.v36i2.54306

Pendahuluan: Nilon termoplastik merupakan bahan basis gigi tiruan yang diminati karena memiliki berbagai kelebihan, yaitu fleksibel, estetis, dan tahan terhadap suhu tinggi. Namun, nilon ini cenderung menyerap air, yang dapat meningkatkan kekasaran permukaan. Nilon termoplastik dapat dibersihkan dengan ekstrak lidah buaya (Aloe vera) 75 % dan alkalin peroksida. Lidah buaya digunakan sebagai desinfeksi alami dan umumnya pengguna gigi tiruan menggunakan alkalin peroksida sebagai desinfeksi kimiawi. Penelitian ini bertujuan untuk menganalisis efek perendaman basis gigi tiruan nilon termoplastik dalam ekstrak lidah buaya dan alkalin peroksida terhadap kekasaran permukaan. Metode: Rancangan penelitian adalah experimental dengan desain posttest only control. Sampel penelitian adalah nilon termoplastik sebanyak 36 spesimen (Bioplast, berbentuk silinder dengan diameter 20 ± 1 mm dengan ketebalan 2 ± 0,1 mm) yaitu 18 spesimen direndam dalam ekstrak lidah buaya dan 18 spesimen dalam alkalin peroksida selama 92 jam untuk simulasi pemakaian selama 15 menit perhari selama 1 tahun. Perendaman spesimen selama 92 jam simulasi pemakaian selama 15 menit perhari selama 1 tahun dikarenakan secara umum gigi tiruan nilon termoplastik diperkirakan dapat digunakan sampai 5 tahun, namun harus dievaluasi satu tahun sekali untuk memastikan bahwa gigi tiruan masih tetap optimal. Sampel kemudian diuji dan dianalisis dengan uji t tidak berpasangan untuk menganalisis kekasaran permukaan. Hasil: Tidak ada perbedaan efek perendaman basis gigi tiruan nilon termoplastik pada ekstrak lidah buaya dan alkalin peroksida selama 92 jam (1 tahun) terhadap kekasaran permukaan namun masih dalam batasan yang dapat ditolerir p=0,131 (p>0,05), walaupun dilihat dari data nilai kekasaran permukaan perendaman ekstrak lidah buaya lebih rendah dibandingkan alkalin peroksida. Simpulan: Tidak ada perbedaan efek perendaman basis gigi tiruan nilon termoplastik dalam larutan ekstrak lidah buaya dan alkalin peroksida terhadap kekasaran permukaan.Kata kunci kekasaran permukaan, nilon termoplastik, ekstrak lidah buaya, desinfeksi, perendamanThe effect of soaking thermoplastic nylon denture base in Aloe vera extract and alkaline peroxide on surface roughness: experimental studyIntroduction: Thermoplastic nylon is a popular denture base material due to its advantages, flexible, aesthetic and high-temperatures resistance. However, it tends to absorb water, which can increase surface roughness. Thermoplastic nylon denture bases can be cleaned with 75% aloe vera extract and alkaline peroxide. Aloe vera serves as a natural disinfectant for dentures, while most denture users opt for alkaline peroxide as a chemical disinfectant. This study aims to determine the effect of soaking a thermoplastic nylon denture base in 75% aloe vera extract and alkaline peroxide on surface roughness. Methods: This research design is true experimental with a posttest only control design. The samples for this study were thirty-six thermoplastic nylon specimens (Bioplast, cylindrical with a diameter of 20 ± 1 mm with a thickness of 2 ± 0.1 mm), namely 18 specimens soaked in aloe vera extract and 18 specimens in alkaline peroxide for 92 hours to simulate use during 15 minutes per day for 1 year. The samples were then tested and analyzed with an unpaired t test to analyze surface roughness. Results: The test results showed that there was no effect of soaking the thermoplastic nylon denture base in aloe vera extract and alkaline peroxide for 92 hours (1 year) on surface roughness but it was still within tolerable limits p=0.131 (p>0.05), although Judging from the data, the surface roughness value of soaking aloe vera extract is lower than alkaline peroxide. Conclusion: Soaking thermoplastic nylon denture bases in aloe vera extract and alkaline peroxide solutions has no significant effect on surface roughness.Keywordssurface roughness, thermoplastic nylon, Aloe vera extract, disinfection, soaking

PENGARUH PERENDAMAN MODEL GIPSUM TIPE III DALAM LARUTAN DESINFEKTAN TERHADAP JUMLAH Pseudomonas aeruginosa Monica Evithalia Manurung; Eddy Dahar
Journal of Syiah Kuala Dentistry Society Vol 4, No 2 (2019): DESEMBER
Publisher : Dentistry Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar

Impression making is the main requirement to do dentures. Dental impressions become contaminated with the patients microorganisms from patients saliva, blood, pus and debris which are known as opportunistic patogens that can cross infect from the dental impressions to the gypsum casts pouredagainst them. This cross infection of microorganism remains, even after rinsing and desinfecting thegypsum casts by immersing the gypsum cast in desinfeting solutions, such as glutaraldehyde 2% orsodium hypoclorite 0,5% solutions, can be one of the way to prevent the potential of cross infectionduring dental procedures the purpose of this study is to evaluate the effect of immersing gypsum caststype III with the amount of Pseudomonas aeruginosa and the value of the surface hardness of gypsumcasts type III. The sample of this study is basedon the spesification ANSI/ADA No. 25, with three groupsof activity, with 9 samples each, which is, rinsing with distilled water (group A), immersion inglutaraldehyde 2% (group B) and immersion in sodium hypoclorite 0,5% (group C), so that totalsamples are 54 samples. Analisys with kruskal wallis and one way Anova. The number and standarddeviation of Pseudomonas aeruginosa in group A (222 74.11 CFU / mL), group B and C (0 CFU /mL). The value and standard deviation of surface hardness in group A (23.83 0.69 VHN) , group B(12.60 0.72 VHN) and C (17.24 1.14 VHN). There was an effect of immersion of gypsum type IIIwith glutaraldehyde 2% and sodium hypochlorite 0.5% on the amount of Pseudomonas aeruginosa andsurface hardness in the fabricating of dentures (p = 0.0001).Keyword: Glutaraldehyde 2%, Sodium hypochlorite 0,5%, Pseudomonas aeruginosa, Surfacehardness.__________________________________________________________________________________

Perbedaan efek penambahan hidroksiapatit pada bahan basis gigi tiruan resin akrilik polimerisasi panas terhadap kekuatan impak: Studi eksperimental laboratoris Sebayang, Sara Nabila Br.; Dahar, Eddy
Jurnal Kedokteran Gigi Universitas Padjadjaran Vol 37, No 1 (2025): April 2025
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jkg.v37i1.60109

Pendahuluan: Bahan basis gigi tiruan yang paling umum digunakan adalah resin akrilik polimerisasi panas (RAPP), namun RAPP memiliki kekuatan impak yang rendah sehingga mudah fraktur apabila terjatuh. Kekuatan impak dapat ditingkatkan dengan penambahan bahan penguat, salah satunya hidroksiapatit (HA). Hidroksiapatit memiliki sifat osteokonduktif dan biokompatibilitas yang baik. Tujuan penelitian ini adalah untuk menganalisis efek penambahan hidroksiapatit pada bahan basis gigi tiruan RAPP terhadap kekuatan impak. Metode: Jenis penelitian eksperimental laboratoris dengan desain post-test only control group design. Penelitian dilakukan pada sampel RAPP merk QC 20, UK tanpa dan dengan penambahan HA berukuran 80 mmx10 mm x 4 mm. Jumlah total sampel sebanyak 36 yang terdiri dari 9 sampel untuk masing-masing kelompok, yaitu kelompok A (kontrol), kelompok B (3% HA), kelompok C (4% HA), dan kelompok D (6% HA), pada tiap sampel dilakukan pengujian kekuatan impak dengan alat Charpy Impact Tester lalu dihitung dengan menggunakan rumus kekuatan impak dengan satuan J/mm2, kemudian dilakukan analisis data menggunakan ANOVA dan Least Significant Difference. Hasil: Terjadi peningkatan nilai kekuatan impak RAPP pada kelompok dengan penambahan hidroksiapatit 3% apabila dibandingkan dengan kelompok tanpa penambahan hidroksiapatit, kelompok penambahan hidroksiapatit 4%, dan kelompok penambahan hidroksiapatit 6%. Terdapat perbedaan efek signifikan pada penambahan HA terhadap kekuatan impak dengan p=0,003 (p<0,05). Hasil uji LSD menunjukkan ada perbedaan bermakna pengaruh penambahan HA terhadap kekuatan impak RAPP, yaitu antara kelompok (A–C) dengan nilai p=0,040 (p<0,05); antara kelompok (A–D) dengan nilai p=0,010 (p<0,05); antara kelompok (B–C) dengan nilai p=0,006 (p<0,05); antara kelompok (B–D) dengan nilai p=0,001 (p<0,05). Simpulan: Penambahan 3% HA dapat meningkatkan kekuatan impak karena pencampuran dari 3% HA dengan RAPP tidak menyebabkan aglomerasi dan membentuk ikatan mekanis yang baik dengan matriks polimer sehingga bahan basis gigi tiruan RAPP yang dihasilkan akan lebih tahan terhadap fraktur.Effect of addition of hydroxyapatite to denture base materials heat cured acrylic resin on impact strengthIntroduction: The most commonly used denture base material is heat-cured (HC) acrylic resin, but HC acrylic resin has low impact strength and therefore it breaks easily when dropped. Impact strength can be increased by adding reinforcing materials, one of which is hydroxyapatite (HA). Hydroxyapatite has excellent osteoconductive properties and good biocompatibility. The purpose of this study was to determine the effect of adding 3%, 4%, and 6% hydroxyapatite to the HC acrylic resin denture base material on impact strength. Methods: This was an experimental laboratory with a posttest-only control group design conducted on HC acrylic resin samples, with and without the addition of HA, each measuring 80 mm x 1 0mm x 4mm. The total number of samples was 36, consisting of 9 samples for each group: group A (control), group B (3% HA), group C (4% HA), and group D (6% HA). Impact strength was measured using the Charpy Impact Tester and then calculated using the standard formula. Data were analyzed using one-way ANOVA and the Least Significant Difference (LSD) test. Result: There was an increase in the HC acrylic resin impact strength in the group with the addition of 3% hydroxyapatite compared with the group without hydroxyapatite, as well as compared with the groups containing 4% and 6% hydroxyapatite. The addition of HA had a significant effect on impact strength with p=0.003 (p <0.05). The LSD test showed significant differences in the effect of adding HA on the impact strength of HC acrylic resin between groups A–C (p=0.040, p<0.05), groups A–D (p=0.010, p<0.05), groups B–C (p=0.006, p<0.05), and groups B–D (p=0.001, p<0.05). Conclusion: The addition of 3% HA can increase impact strength, indicating that the resulting HC acrylic resin denture base material is more resistant to fracture.

Perbedaan efek penambahan hidroksiapatit pada bahan basis gigi tiruan resin akrilik polimerisasi panas terhadap kekerasan permukaan: studi eksperimental laboratoris Sembiring, Rasbina Anggriani; Dahar, Eddy
Jurnal Kedokteran Gigi Universitas Padjadjaran Vol 37, No 1 (2025): April 2025
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jkg.v37i1.60110

Pendahuluan: Bahan basis gigi tiruan yang paling sering digunakan adalah resin akrilik polimerisasi panas (RAPP), namun RAPP memiliki kekerasan permukaan yang rendah sehingga mudah terjadinya abrasi. Abrasi dapat menjadi tempat penumpukan debris dan mikroorganisme. Kekerasan permukaan dapat ditingkatkan dengan menambahkan hidroksiapatit. Hidroksiapatit berikatan secara mekanis dan mengisi celah dalam matriks polimer. Tujuan penelitian ini untuk menganalisis perbedaan efek penambahan hidroksiapatit pada bahan basis gigi tiruan RAPP terhadap kekerasan permukaan. Metode: Rancangan penelitian ini adalah eksperimental laboratoris dengan desain posttest-only control group design. Sampel yang digunakan yaitu RAPP berukuran 30x5 mm (ISO 1567:1999) sebanyak 45 sampel yang terdiri dari 5 kelompok yaitu kelompok kontrol, kelompok penambahan hidroksiapatit 2%, 3%, 4% dan 5%. Setiap sampel diuji dengan Vicker Hardness Tester untuk mengetahui nilai kekerasan permukaan. Hasil: Hasil uji oneway-ANOVA menunjukkan adanya pengaruh penambahan hidroksiapatit 2%, 3%, 4% dan 5% pada bahan basis gigi tiruan RAPP terhadap kekerasan permukaan dengan nilai p=0,001 (p<0,05). Pada hasil uji LSD terlihat perbedaan bermakna terhadap kekerasan permukaan antara kelompok kontrol dengan kelompok penambahan hidroksiapatit 2%, 3%, 4% dan 5% serta pada setiap kelompok penambahan hidroksiapatit 2%, 3%, 4% dan 5% dengan nilai p=0,001 (p<0,05). Simpulan: Basis gigi tiruan RAPP dengan penambahan hidroksiapatit 2%, 3%, 4% dan 5% memiliki nilai diatas nilai standar kekerasan permukaan RAPP (15-18 VHN) dengan nilai tertinggi pada penambahan hidroksiapatit 5% sehingga hidroksiapatit dapat dimanfaatkan sebagai bahan penguat pada basis gigi tiruan RAPP untuk mencegah terjadinya abrasi yang dapat menjadi tempat perlekatan mikroorganisme. The Effect of hydroxyapatite addition on surface hardness in heat-cured acrylic resin denture base material: a experimental laboratory Introduction: The most prevalent denture base material is heat-polymerized acrylic resin (HCAR), however, HCAR exhibits low surface hardness and is susceptible to abrasion. Abrasion facilitates the accumulation of debris and microorganisms. The surface hardness can be enhanced through the addition of hydroxyapatite Hydroxyapatite Mechanically binds in the polymer matrix. The purpose of this study was to analyze the effect of adding hydroxyapatite to HCAR denture base material on surface hardness. Method: The design of this study was an experimental laboratory with post-test only control group design. The samples used were 45 HCAR samples-sized 30x5 mm (ISO 1567:1999) consisting of 5 groups: control group, hydroxyapatite addition of 2%, 3%, 4% and 5%. Each sample tested using Vicker Hardness Tester to determine the surface hardness value. Results: The results of oneway-ANOVA test showed the effect of adding 2%, 3%, 4% and 5% hydroxyapatite to the HCAR denture base material on surface hardness with value p=0.001 (p<0.05). The LSD test showed significant differences in surface hardness between the control group and the 2%, 3%, 4% and 5% hydroxyapatite addition groups and in each group of 2%, 3%, 4% and 5% hydroxyapatite addition with value p=0.001 (p<0.05). Conclusion: The HCAR denture base with the addition of 2%, 3%, 4% and 5% hydroxyapatite has values above standard value of HCAR surface hardness (15-18 VHN) with the highest value at 5% hydroxyapatite so hydroxyapatite can be utilized as reinforcing material of HCAR denture base to prevent abrasion which which causes microorganism attachment.

Pengaruh penambahan hidroksiapatit pada bahan basis gigi tiruan resin akrilik polimerisasi panas terhadap penyerapan air: Eksperimental laboratoris Siregar, Chintika Bernaditha; Dahar, Eddy
Jurnal Kedokteran Gigi Universitas Padjadjaran Vol 35, No 3 (2023): Desember 2023
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jkg.v35i3.48242

ABSTRAKPendahuluan: Salah satu bahan pembuatan basis gigi tiruan yang sering digunakan adalah resin akrilik polimerisasi panas, karena memiliki estetis yang baik, tidak toksik serta pembuatan dan pemolesan yang relatif murah, namun ketahanannya terhadap fraktur rendah. Kekuatan resin akrilik polimerisasi panas dapat ditingkatkan dengan penambahan bahan penguat seperti hidroksiapatit yang merupakan biokeramik dan memiliki kemiripan dengan mineral penyusun tulang dan gigi dan telah banyak digunakan di bidang biomedis. Penyerapan air merupakan salah satu sifat resin akrilik polimerisasi panas yang perlu diperhatikan. Penyerapan air dapat memengaruhi sifat-sifat resin akrilik lainnya, seperti perubahan fisis dan menurunkan sifat mekanis sehingga basis menjadi lebih mudah fraktur. Penambahan hidroksiapatit diharapkan dapat meningkatkan sifat mekanis namun tidak meningkatkan penyerapan air resin akrilik. Penelitian eksperimental laboratoris ini bertujuan untuk mengetahui pengaruh penambahan hidroksiapatit 3, 4, dan 6% pada bahan basis gigi tiruan resin akrilik polimerisasi panas terhadap penyerapan air. Metode: Sampel terbuat dari resin akrilik polimerisasi panas berbentuk disk dengan ukuran 50 x 0,5 mm. Sebanyak 28 sampel dibagi menjadi 4 kelompok, yaitu kelompok kontrol dan kelompok penambahan hidroksiapatit 3, 4, dan 6%. Setiap kelompok sampel dihitung nilai penyerapan airnya sesuai prosedur ISO (International Standards Organization). Hasil: Hasil perhitungan penyerapan air dianalisis dengan uji One-way ANOVA dan uji LSD (Least Significance Different) dengan nilai p<0,0001 (p<0,05). nilai penyerapan air semakin tinggi seiring dengan penambahan hidroksiapatit dibandingkan dengan kelompok kontrol. Simpulan: Penambahan hidroksiapatit pada bahan basis gigi tiruan resin akrilik polimerisasi panas dapat memengaruhi nilai penyerapan air. Semakin banyak hidroksiapatit yang ditambahkan, semakin tinggi nilai penyerapan airnya.Kata kunci : Basis gigi tiruan, resin akrilik polimerisasi panas, bahan penguat, hidroksiapatit, penyerapan airThe effect of addition of hydroxyapatite to denture base materials heat cured acrylic resin on water absorption: Laboratory experimentalIntroduction: Heat cured acrylic resin has been used as dental material for making denture bases more aesthetics characterized by non-toxic and relatively cheap to manufacture and polish, but resistance of fracture. Reinforcing agents such as hydroxyapatite can be added to increase the strength of heat cured acrylic resin, its bioceramic and has similarities with minerals of bone and teeth and has been widely used in the biomedical field. Water absorption is one of the characteristics of heat cured acrylic resin that needs to be considered. Water absorption in acrylic resin can affect other characteristics of acrylic resin, such as physical changes and decreased mechanical properties so that the base becomes easier to fracture. Addition of hydroxyapatite is expected to enhance the mechanical properties but not increase water absorption. This experimental laboratory study aims to determine the effect of adding 3, 4, and 6% hydroxyapatite to heat cured acrylic resin denture based on water absorption. Methods: The samples were made of heat cured acrylic resin in disk-shaped measured 50 x 0.5 mm. A total of 28 samples were divided into 4 groups: a control group and group with the addition of hydroxyapatite in various concentrations (3, 4, and 6%). Each group of samples was calculated for water absorption value using the formula from the International Standards Organization. Results: The calculation results of water absorption were analyzed by One-way ANOVA and LSD tests with p value < 0.0001 (p<0.05) the water absorption value was getting higher as the addition of hydroxyapatite compared to the control group. Conclusion: The addition of hydroxyapatite to denture base materials heat cured acrylic resin affects the water absorption value. The more hydroxyapatite added, the higher the water absorption of heat cured acrylic resinKeywords : Denture base, heat cured acrylic resin, reinforcement, hydroxyapatite, water absorption

Pengaruh Desinfeksi Model Gipsum Tipe III Menggunakan Sodium Hypochlorite dan Microwave Terhadap Kekuatan Kompresi dan Kekerasan Permukaan Iyal Naidu, Sharmila Naidu A/P; Dahar, Eddy
Cerdika: Jurnal Ilmiah Indonesia Vol. 1 No. 6 (2021): Cerdika: Jurnal Ilmiah indonesia
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/cerdika.v1i6.108

Saat prosedur pengambilan cetakan dilakukan, darah dan saliva akan menempel pada hasil cetakan dan hal ini memungkinkan terjadinya infeksi silang. Tujuan penelitian ini adalah untuk mengetahui pengaruh desinfeksi model gipsum tipe III menggunakan sodium hypochlorite dan microwave terhadap kekuatan kompresi dan kekerasan permukaan. Penelitian ini adalah penelitian eksperimental laboratoris dan total sampel pada penelitian ini adalah 60 sampel gipsum tipe III, yang mana 30 sampel digunakan untuk meneliti kekuatan kompresi dan 30 sampel digunakan untuk meneliti kekerasan permukaan yang mana dua kelompok penelitian ini dibagi kepada tiga kelompok yaitu kelompok kontrol ( 10 sampel yang tidak desinfeksi), 10 sampel yang didesinfeksi dengan 0,5% sodium hypochlorite selama 10 menit dan 10 sampel didesinfeksi dengan microwave pada 550 Watt selama 10 menit dan data yang diperoleh dianalisa menggunakan uji ANOVA dan LSD. Hasil penelitian ditunjukkan terdapat perbedaan pengaruh desinfeksi model gipsum tipe III menggunakan 0,5% sodium hypochlorite selama 10 menit dan microwave pada 550 Watt selama 10 menit terhadap kekuatan kompresi dan kekerasan permukaan(p=0,0001<0,05).

Pengaruh Lama Perendaman Basis Gigi Tiruan Resin Akrilik Polimerisasi Panas Dalam Larutan Kopi, Teh, dan Jamu Terhadap Stabilitas Warna Sitompul, Rona Oktavia; Dahar, Eddy
Cerdika: Jurnal Ilmiah Indonesia Vol. 5 No. 6 (2025): Cerdika: Jurnal Ilmiah Indonesia
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/cerdika.v5i6.2649

Heat-cured acrylic resin (HCAR) denture base is widely used in prosthodontic practice due to its affordability and ease of manipulation. However, its hydrophilic nature and porosity make it prone to discoloration when exposed to colored beverages. This study aims to evaluate the effect of immersion duration in coffee, tea, and herbal solutions on the color stability of HCAR denture base. Sixty cylindrical HCAR samples (20 mm × 3 mm) were immersed in each solution for 3, 5, and 7 days, and color changes were measured using a spectrophotometer. Data were analyzed using one-way ANOVA. The results showed no significant differences in color stability among the groups (p > 0.05). The highest mean discoloration was observed in the herbal group after 7 days (1.04 ± 0.10), while the lowest was in the coffee and tea groups after 3 days (0.85 ± 0.15 and 0.85 ± 0.17). Clinically, these findings are significant because they suggest that short-term exposure to commonly consumed beverages such as coffee, tea, and herbal drinks does not significantly affect the color stability of HCAR denture bases within an estimated 2.8-year usage period. This insight is valuable for prosthodontists when advising patients on dietary habits and maintenance routines to preserve the aesthetic quality of their prosthetic appliances over time.

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