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RPI and RPL clasp masticatory load distribution in lower free end denture case with photoelastic methods Sutanto, Dahlia; Mahmud, Muslich; Rahajoeningsih, Poedji
Padjadjaran Journal of Dentistry Vol 19, No 1 (2007): March
Publisher : Faculty of Dentistry Universitas Padjadjaran, Indonesia

The extent and direction of movement of removable partial dentures during function are influenced by the nature of supporting structures and the design of the prosthesis since forces are transmitted to abutment teeth by rest, guide planes, and direct retainers during functional movements. Because of the lack of tooth support distally, the denture base will have tissueward underfunction proportionate to the quality (displaceability) of the supporting soft tissue, the accuracy of the denture base, and the total occlusal load applied. The movement of the base under function determines the occlusal efficiency of the partial denture and the degree to which the abutment teeth are subjected to torque and tipping stresses.The purpose of this study is to know the functional load exerts with RPI and RPL direct retainer in bilateral distal extension. This study is a laboratory experiment employing samples of 5 frames using RPI and 5 frames using RPL direct retainer design. Testing was conducted by Vishay Teaching Polariscope type 080. The result was noted and analyzed statistically using ANOVA.The result of this study indicates that F calculation value for frame with RPI and RPL direct retainer design is 5,35 and 6,11 Mpa; F calculation for the occlusal load distribution on first premolar and edentulous area is 276,90 Mpa and 171,53 Mpa; F calculation for occlusal load distribution on first premolar and edentulous area employing RPI and RPL direct retainer design is 9,17 and 11,96 Mpa. This statistical calculation shows that there is a significant difference between RPI and RPL direct retainer design, the occlusal load concentrated at edentulous area either RPI or RPL direct retainer, and the occlusal load distribution between the first premolar and edentulous area are more uniform on RPI direct retainer design.

Meningkatkan Kualitas Hidup dengan Memanfaatkan Beberapa Gigi Asli yang Tersisa Melalui Desain Swing-Lock Removable Denture Sutanto, Dahlia
Zenit Vol 3, No 1 (2014)
Publisher : Zenit

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

It should come as no surprise that tooth loss and age are linked. It has been documented that there is a specific tooth loss relationship with increasing age because some teeth are retained longer than others. There is an interarch difference in tooth loss, with the maxillary tooth loss beforemandibular teeth. There is also an intraarch difference with posterior teeth loss before anterior teeth.Frequently, the last remaining teeth in the mouth are the mandibular anterior teeth, sometimes accompanied by compromised conditions, and it is a common finding to see an edentulous maxilla opposing mandibular anterior teeth2. The swing-lock removable partial denture concept offers a wayof maximizing the retention and stability of the removable partial denture and may be very useful in restoring the extremely compromised dentition4. The retentive and stability denture enhance the quality of life by serving esthetic, mastication, and phonetic functions.Keywords: swing-lock removable partial denture, esthetic, mastication, and phonetic function.

ANTIMICROBIAL ACTIVITY OF CHITOSAN 2% AND OXYGENIZING DENTURE CLEANSER ON PROHIBITING STREPTOCOCCUS MUTANS GROWTH AT ACRYLIC HEAT-CURED RESINS PLATE: EFEK ANTIMIKROBA KITOSAN 2% DAN PEMBERSIH GIGI TIRUAN BEROKSIDA DALAM MENGHAMBAT PERTUMBUHAN STREPTOCOCCUS MUTANS PADA LEMPENG RESIN AKRILIK POLIMERISASI PANAS Evelyna, Angela; Sutanto, Dahlia; Nadapdap, Astuti
Dentika: Dental Journal Vol. 20 No. 2 (2017): Dentika Dental Journal
Publisher : TALENTA

Heat-cured acrylic denture base-plate may act as reservoir for Streptococcus mutans (all species name must be in italics) colonies, this condition may lead to denture stomatitis. One of denture cleansing method that frequently used is by immersion (of what?) in oxygenizing denture cleansers that has several disadvantages such as high cost and biocompatibility issue regarding chemical synthetic component of the solution. Chitosan is a natural compound that has antibacterial nature. The most commonly percentage of chitosan used for biomedical purposes is 2%. The objective of this study is to evaluate the antimicrobial effectivity of chitosan 2% on acrylic heat-cured plates and compare it with oxygenizing denture cleansers. Aquadest was used as control. Fifteen acrylic heat-cured plates (10 x10 x 2 mm) immersed in Streptococcus mutans suspensions at temperature 37Â°C for 48 hours of 3 different solutions. The solutions were vortexed and put into (Brain Heart Infusion Agar) medium. Streptococcus mutans colonies were counted manually. The result shows, that Streptococcus mutans colonies on aquadest group was 269.75 CFU/plate, followed by oxygenizing denture cleanser with 11 CFU/plate), and chitosan 2% group with 0.4 CFU/plate, respectively. Data were analysed with Kruskal-Wallis non-parametric test followed by Mann-Whitney test shows of p=0.012 (p<0.05). There were no statistically significant different of antimicrobial activity between chitosan 2% and oxygenizing denture cleanser. The result demonstrated that chitosan 2% solution was more effective to prohibit the growth of Streptococcus mutans colonies on acrylic heat cured plates, however a statistically significant difference between the two groups was not observed.

Perbandingan Tensile Strength, Tear Strength, dan Reproduction Of Detail Bahan Cetak Alginat Sintesis dengan Variasi Jumlah Nanoselulosa dan Metakaolin Terhadap Jeltrate® Rizka Amalina; Dahlia Sutanto; Bambang Sunendar
SONDE (Sound of Dentistry) Vol. 3 No. 1 (2018): SONDE (Sound of Dentistry)
Publisher : Maranatha Christian University

Bahan cetak gigi terutama alginat digunakan hampir pada semua cabang kedokteran gigi yang berfungsi menghasilkan suatu bentuk cetakan dari hubungan gigi dan jaringan rongga mulut (jaringan keras dan jaringan lunak) untuk mendapat cetakan negatif atau model dari jaringan mulut.Bahan cetak alginat harus memenuhi sifat biologis dan mekanis yang ideal.Kelebihan yang dimiliki alginat yang ada sekarang telah mencakup hampir seluruh sifat idealnya, namun alginat memiliki beberapa kekurangan seperti tensile strength, tear strength, dan reproduction of detail yang kurang baik. Kekurangan sifat mekanis alginat diketahui dapat ditingkatkan dengan filler dengan jumlah yang tepat. Mengetahui perbedaan antara hasil uji tensile strength, tear strength, dan reproduction of detail dari bahan cetak alginat sintesis dengan variasi jumlah filler nanoselulosa dan metakaolin terhadap jeltrate®. Desain penelitian yang digunakan adalah penelitian eksperimental laboratoris murni dengan teknik pengambilan sampel purposive sampling dengan kelompok uji terbagi menjadi 4 kelompok. Uji statistik yang digunakan pada penelitian ini adalah ANOVA. Ini adalah diperoleh p-value sebesar< 0,05 yang menunjukan bahwa terdapat perbedaan antara hasil uji tensile strength, tear strength, dan reproduction of detail dengan variasi jumlah filler nanoselulosa dan metakaolin terhadap jeltrate®. Penelitian adalah terdapat perbedaan antara hasil uji tensile strength, tear strength, dan reproduction of detail dari bahan cetak alginat sintesis dengan variasi jumlah filler nanoselulosa dan metakaolin terhadap jeltrate®.

Perbedaan Kekuatan Transversa Resin Akrilik Heat Cured yang Direndam pada Larutan Eeffervescent dan Perasan Daun Salam (Eugenia Polyantha Wight) Chintya Citra K; Angela Evelyna; Dahlia Sutanto
SONDE (Sound of Dentistry) Vol. 2 No. 1 (2017): SONDE (Sound of Dentistry)
Publisher : Maranatha Christian University

Saat ini pembersih yang sering digunakan untuk membersihkan gigi tiruan sebagian lepasan adalah larutan effervescent dibantu dengan metode mekanik yaitu menyikat gigi tiruan menggunakan sikat gigi berbulu halus dan pasta gigi. Masalah dari metode pembersihan tersebut adalah dapat menurunkan kekuatan landasan gigi tiruannya. Penelitian ini bertujuan untuk mengetahui pengaruh perasan daun salam sebagai pembersih gigi tiruan terhadap kekuatan transversa resin akrilik heat cured. Spesimen akrilik berukuran 65 x 13 x 3.3 mm sebanyak 24 buah direndam dalam larutan effervescent dan perasan daun salam dengan variasi waktu yang berbeda 30 menit dan 8 jam selama 7 hari, lalu diuji kekuatan transversanya dengan Universal Testing Machine. Didapatkan perbedaan kekuatan transversa resin akrilik heat cured yang direndam larutan effervescent dan perasan daun salam, kelompok perasan daun salam 8 jam mengalami peningkatan kekuatan transversa secara signifikan sebesar -83.5 N lebih tinggi dibanding kelompok larutan effervescent 8 jam. Kandungan fenol ? 0.005% daun salam tidak menyebabkan difusi berlebihan pada resin akrilik. Kesimpulannya terdapat perbedaan kekuatan transversa resin akrilik heat cured yang direndam pada larutan effervescent dan perasan daun salam.

Chitosan 2% Effect on Prohibiting the Growth of Candida Albicans on Heatcured Acrylic Resin Angela Evelyna; Dahlia Sutanto; Elizabeth Tiffany
Jurnal Material Kedokteran Gigi Vol 6 No 2 (2017): JMKG Vol 6 No 2 September 2017
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Maintaining acrylic denture hygiene is a necessary to prohibit the growth of several oral fungi such as Candida albicans. Candida albicans are the main etiological microorganism of denture stomatitis. One of the ways to clean denture is by immersion on synthetic denture cleaner liquid such as oxygenizing denture cleaners. However, synthetic denture cleaner have several limitation due to its biocompatibility on human body especially oral tissue. Chitosan is a derivate of chitin, a natural compound of sea creature exosceleton. Chitosan have antifungi and antibacterial nature. The objective of this study is to evaluate the antifungi efectifity of chitosan 2% on acrylic heatcured and compare it with oxygenizing denture cleaner. Aquades is used as a control. The sample consists of 15 acrylic heatcured bars (10x10x2 mm) prepared by contamination on Candida albicans suspensions at temperature 37°C for 24 hours and immersed on 3 different treatments wich are chitosan 2%, oxygenizing denture cleanser, and aquades as control and then, the solutions are being vibrate and put into sabouraud dextrose agar medium. The colony of Candida albicans counted manually. Result shows, highest mean of Candida albicans colony on aquades group (365,66 CFU/plate), followed by oxygenizing denture cleanser treatment (178,33 CFU/plate). The smallest number colony of Candida albicans are found at chitosan 2% treatment (45,33 CFU/plate). Statistical analysis using ANOVA one way shows F=9.826 and p=0, this means, there is minimal one pair of groups with very significant differential (p<0,01) which are chitosan 2% and oxygenizing denture cleanser compared to aquades as control. The difference between those two treatments also significant. Conclusions of this study is that chitosan 2% solution have a sifnificant effect on prohibiting the growth of Candida albicans colony on acrylic heatcured denture base materials. The effectivity of this solution is significantly higher than oxygenizing denture cleanser treatment.

Compressive strength and Weibull distribution of lithium disilicate dental ceramics: Kekuatan tekan dan distribusi Weibull dari keramik dental disilikat lithium Silvia Naliani; Dahlia Sutanto; Angela Evelyna; Michael Adi Hizkia
Makassar Dental Journal Vol. 10 No. 3 (2021): Volume 10 Issue 3 Desember 2021
Publisher : Makassar Dental Journal PDGI Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35856/mdj.v10i3.447

Objective: To compare the compressive strength of three types of commercial lithium disilicate ceramics. Methods: Three groups of lithium disilicate ceramics (IPS e.max Press, Vintage LD Press, and Celtra Press) total of twelve cylindrical specimens (diameter 4 mm x length 6 mm) were produced by laboratory processing. The compressive strength was conducted using Shimad-zu universal testing machine with load cell F 50 kN, cross head speed of 1 mm/s. Micromorphology were observed using scan-ning electron microscope. Anova test and Weibull test were performed and p<0.05 was considered significant. Results: There are no significant differences between three groups of lithium disilicate dental ceramics compressive strength (p=0.531). How-ever, IPS e.max Press group show higher compressive strength compared to the other two materials. IPS e.max Press and Vin-tage LD Press groups show significantly higher coefficient corelation than Celtra Press group. Conclusion: IPS e.max Press lithium disilicate dental ceramic have higher compressive strength compared to the other groups, but the reliability of Celtra Press is lower than those of lithium disilicate dental ceramics.

In vivo histomorphological evaluation of geopolymer-carbonated apatite nanocomposites implanted on rabbit tibia at early bone healing Sutanto, Dahlia; Satari, Mieke Hemiawati; Hernowo, Bethy Suryawathy; Priosoeryanto, Bambang Pontjo; Septawendar, Rifki; Asri, Lia Amelia Tresna Wulan; Purwasasmita, Bambang Sunendar
Padjadjaran Journal of Dentistry Vol 33, No 1 (2021): March 2021
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol33no1.28899

Introduction: Dental implants have become a more desirable treatment for replacing missing teeth. The mechanical properties and biocompatibility of titanium and zirconia are excellent, but they are less bioactive. The chemical composition of the carbonate apatite is similar to enamel and dentin. Geopolymers are inorganic polymers, and they are similar to ceramics. They have excellent mechanical properties, bioactivity, biocompatibility. The purpose of this study was to assess histomorphological evaluation of geopolymer-carbonated apatite nanocomposites implanted on rabbit tibia at early bone healing in vivo. Methods: Geopolymer-CHA nanocomposites with a diameter of 3 mm and length of 6 mm was placed in the tibia of eight male New Zealand White rabbit whose body weight is 3 to 3.5 kg and six-month ages. Experimental subjects were randomly assigned to 2 groups for assessing the bone healing capability around samples to 14 and 28 days histomorphologically. Wilcoxon test was performed, and p<0.05 was considered significant, using Minitab software version 13. Results: Granulation tissue, woven, and lamellar bone was analysed. A reactive bone formation was revealed in the 14th day. Osteoblasts, osteoids, and osteocytes showed more mature and woven bone became denser on the 28th day. Conclusion: Geopolymer-CHA nanocomposites could be considered a candidate for dental implant material from this histomorphological evaluation.

RPI and RPL clasp masticatory load distribution in lower free end denture case with photoelastic methods Sutanto, Dahlia; Mahmud, Muslich; Rahajoeningsih, Poedji
Padjadjaran Journal of Dentistry Vol 19, No 1 (2007): March 2007
Publisher : Universitas Padjadjaran

The extent and direction of movement of removable partial dentures during function are influenced by the nature of supporting structures and the design of the prosthesis since forces are transmitted to abutment teeth by rest, guide planes, and direct retainers during functional movements. Because of the lack of tooth support distally, the denture base will have tissueward underfunction proportionate to the quality (displaceability) of the supporting soft tissue, the accuracy of the denture base, and the total occlusal load applied. The movement of the base under function determines the occlusal efficiency of the partial denture and the degree to which the abutment teeth are subjected to torque and tipping stresses.The purpose of this study is to know the functional load exerts with RPI and RPL direct retainer in bilateral distal extension. This study is a laboratory experiment employing samples of 5 frames using RPI and 5 frames using RPL direct retainer design. Testing was conducted by Vishay Teaching Polariscope type 080. The result was noted and analyzed statistically using ANOVA.The result of this study indicates that F calculation value for frame with RPI and RPL direct retainer design is 5,35 and 6,11 Mpa; F calculation for the occlusal load distribution on first premolar and edentulous area is 276,90 Mpa and 171,53 Mpa; F calculation for occlusal load distribution on first premolar and edentulous area employing RPI and RPL direct retainer design is 9,17 and 11,96 Mpa. This statistical calculation shows that there is a significant difference between RPI and RPL direct retainer design, the occlusal load concentrated at edentulous area either RPI or RPL direct retainer, and the occlusal load distribution between the first premolar and edentulous area are more uniform on RPI direct retainer design.

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