The effect of polishing agents on the transverse strength of heat cured acrylic resin bases
Abstract
Introduction: Heat cured acrylic resin is frequently used denture base material whereby transverse strength is one of the mechanical properties that must be observed. A rough surface absorbs water, reduces strength of denture bases, thus polishing should be done. Pumice is the most abrasive material used in dentistry. Eggshell and tooth-paste can be used as alternative abrasive materials. This study aims to determine the differences in value of trans-verse strength of HCA resin once polished using pumice, eggshells, and toothpaste. Method: This laboratory ex-perimental study using sample sized 65x10x2.5 mm with 30 samples in total for 3 groups. Transverse strength was measured using Universal Testing Machine. The data were analyzed using one-way Anova. Result: The comparison ratio of transverse strength between HCA resin after polishing with pumice, eggshells and tooth paste is 93.63 : 118.42 : 105.91 MPa. It shows there were significant differences in transverse strength between groups with sig-nificant value p was 0.001 which less than 0.05. Conclusion: The value of transverse strength varies according to polishing material used. Eggshell has the highest transverse strength value compared to pumice and toothpaste.References
Khindira SK, Mittal S, Sukhija U. Evolution of denture base materials. J Indian Prosthodont Soc 2009; 9(2): 64-9
McCabe JF, Walls AWG. Applied dental materials.9th ed. London: Blackwell Munksgaard; 2008.p.110-23
Watri D. Pengaruh penambahan serat kaca pada bahan basis gigtiruan resin akrilik polimerisasi panas terhadap kekuatan impak dan transversal [Skripsi]. Medan: Fakultas Kedokteran Gigi Universitas Sumatera Utara, 2010: 36-7.
Orsi IA, Andrade VG. Effect of chemical disinfectants on the transversal strength of heat-polymerized acrylic resins submitted to mechanical and chemical polishing. J Prosthet Dent 2004; 92: 382-8
Hemmati MA, Vafaee F, Allahbakhshi. Water sorption and flexural strength of thermoplastic and conventional heat-polymerized acrylic resins. J Dent, Tohran University of Medical Sciences 2015; 12(7): 478-9.
Utami M, Febrida R, Djustiana N. The comparison of surface hardness between thermoplastic nylon resin and heat-cured acrylic resin. Padjajaran J Dent 2009; 21(3): 200-3.
AL-Kheraif. The effect of mechanical and chemical polishing techniques on the surface roughness of heat-polymerized and visible light-polymerized acrylic denture base resins. Saudi Dent J 2014, 56-62
Manapallil JJ. Basic dental materials. 4th ed. New Delhi: Jaypee Brothers Medical Publishers (P); 2016.p. 532-52
Murakami FS, Rodrigues PO, de Campos CMT, Silva MAS. Physicochemical study of CaCO3 from eggshells. Ciencia Tecnol Aliment 2007: 27 :658-62.
Onwubu SC, Vahed A, Singh S, Kanny KM. Using eggshell for development of a quality alternative material to pumice in reducing the surface roughness of heat-cured acrylic resins [Thesis]. Johanesburg: Durban Uni-versity; 2016: 6-14,23-5,34-5,49
Joiner A. Whitening toothpaste: A review of the literature. J Dent 2010: e17-24
Herda E, Fawzia AF, Soufyan A. Pengaruh penyikatan dengan pasta gigi terhadap kekasaran permukaan nano-ionomer dan semen ionomer kaca modifikasi resin. JMKG 2012; 1(1): 23-32
Pisani MX. Evaluation of the abrasiveness of dentifrices for complete dentures. J Prosthodont 2010, 25; 19: 369-73
Pantow FPCC, Siagian KV, Pangemanan DHC. Perbedaan kekuatan transversal basis resin akrilik polimeri-sasi panas pada perendaman minuman beralkohol dan aquades. E-Gigi J 2015; 3(2): 398-402.
Hasanah N, Triaminingsih S, Matram N. Karakterisasi kekasaran permukaan resin akrilik polimerisasi panas dengan serat dan tanpa serat [Skripsi]. Fakultas Kedokteran Gigi Universitas Indonesia; 2014. p.1-11.
Sahin C, Ergin A, Ayyildiz S, Uzun G. Evaluation of flexural strength and Candida albicans adhesion of an acrylic resin repaired with 4 different resin materials. Clin Dent Res 2012; 36(2): 10-4.
Oliviera LV, Mesquita MF, Henriques GEP. Effect of polishing technique and brushing on surface roughness of acrylic resins. J Prosthodont 2008; 17: 308-11.
Braun KO, Mello JAN, Rached RN, Del Bel Cury AA. Surface texture and some properties of acrylic resins submitted to chemical polishing. J Oral Rehabil 2003; 30: 91-8.
Rahal JS, Mesquita MF, Henriques GEP. Influence of chemical and mechanical polishing on water sorption and solubility. Braz Dent J 2004; 15(3): 225-30.
Setiawan Y. Perbedaan kekasaran permukaan basis resin akrilik polimerisasi panas menggunakan bahan pumis, cangkang telur dan pasta gigi sebagai bahan poles [Skripsi]. Program Sarjana Fakultas Kedokteran Gigi Universitas Sumatera Utara.
Wu SS, Hsu HC, Hsu SK, Chang YC, Ho WF. Synthesis of hydroxyapatite from eggshell powders through ball milling and heat treatment. J Asian Ceram Soc 2015; 198: 1-6.
Sumendap IB, Herda E, Eriwati YK. Effect of whitening toothpaste on the discoloration level of stained conventional glass ionomer cement. J Phys: Conf Ser 2018; 1073: 1-6.
The copyright of the received article shall be assigned to the journal as the publisher of the journal. The intended copyright includes the right to publish the article in various forms (including reprints). The journal maintains the publishing rights to the published articles.
Authors are permitted to disseminate published articles by sharing the link/DOI of the article at the journal. Authors are allowed to use their articles for any legal purposes deemed necessary without written permission from the journal with an acknowledgment of initial publication to this journal.
This work is licensed under a Creative Commons Attribution 4.0 International License.