Effect of three filler types on mechanical properties of dental composite
Statement of Problem: Despite the improvements achieved in the field of dental composites, their strength, longevity, and service life specially in high stress areas is not confirmed. Finding better fillers can be a promising step in this task. Purpose: The purpose of this study was to investigate t...
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| Format: | Article |
| Language: | fas |
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Tehran University of Medical Sciences
2005-06-01
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| Series: | Journal of Dental Medicine |
| Subjects: | |
| Online Access: | http://journals.tums.ac.ir/PdfMed.aspx?pdf_med=/upload_files/pdf/1932.pdf&manuscript_id=1932 |
| _version_ | 1818392029671981056 |
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| author | Pahlavan A. Ataei M. Zandi-Nejad AA |
| author_facet | Pahlavan A. Ataei M. Zandi-Nejad AA |
| author_sort | Pahlavan A. |
| collection | DOAJ |
| description | Statement of Problem: Despite the improvements achieved in the field of dental composites, their strength, longevity, and service life specially in high stress areas is not confirmed. Finding better fillers can be a promising step in this task. Purpose: The purpose of this study was to investigate the effect of the filler type on the mechanical properties of a new experimental dental composite and compare these with the properties of composite containing conventional glass filler. Materials and Methods: Experimental composites were prepared by mixing silane-treated fillers with monomers, composed of 70% Bis-GMA and 30% TEGDMA by weight. Fillers were different among the groups. Glass, leucite ceramic and lithium disilicate were prepared as different filler types. All three groups contained 73% wt filler. Comphorquinone and amines were chosen as photo initiator system. Post curing was done for all groups. Diametral tensile strength (DTS), flexural strength and flexural modulus were measured and compared among groups. Data were analyzed with SPSS package using one-way ANOVA test with P<0.05 as the limit of significance. Results: The results showed that the stronger ceramic fillers have positive effect on the flexural strength. Ceramic fillers increased the flexural strength significantly. No significant differences could be determined in DTS among the groups. Flexural modulus can be affected and increased by using ceramic fillers. Conclusion: Flexural strength is one of the most significant properties of restorative dental materials. The higher flexural strength and flexural modulus can be achieved by stronger ceramic fillers. Any further investigation in this field would be beneficial in the development of restorative dental materials. |
| first_indexed | 2024-12-14T05:22:55Z |
| format | Article |
| id | doaj.art-17084a8dbc2b4363a8cd96f1ee190f26 |
| institution | Directory Open Access Journal |
| issn | 1024-641X 2008-2444 |
| language | fas |
| last_indexed | 2024-12-14T05:22:55Z |
| publishDate | 2005-06-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | Journal of Dental Medicine |
| spelling | doaj.art-17084a8dbc2b4363a8cd96f1ee190f262022-12-21T23:15:36ZfasTehran University of Medical SciencesJournal of Dental Medicine1024-641X2008-24442005-06-011826774Effect of three filler types on mechanical properties of dental compositePahlavan A.Ataei M.Zandi-Nejad AAStatement of Problem: Despite the improvements achieved in the field of dental composites, their strength, longevity, and service life specially in high stress areas is not confirmed. Finding better fillers can be a promising step in this task. Purpose: The purpose of this study was to investigate the effect of the filler type on the mechanical properties of a new experimental dental composite and compare these with the properties of composite containing conventional glass filler. Materials and Methods: Experimental composites were prepared by mixing silane-treated fillers with monomers, composed of 70% Bis-GMA and 30% TEGDMA by weight. Fillers were different among the groups. Glass, leucite ceramic and lithium disilicate were prepared as different filler types. All three groups contained 73% wt filler. Comphorquinone and amines were chosen as photo initiator system. Post curing was done for all groups. Diametral tensile strength (DTS), flexural strength and flexural modulus were measured and compared among groups. Data were analyzed with SPSS package using one-way ANOVA test with P<0.05 as the limit of significance. Results: The results showed that the stronger ceramic fillers have positive effect on the flexural strength. Ceramic fillers increased the flexural strength significantly. No significant differences could be determined in DTS among the groups. Flexural modulus can be affected and increased by using ceramic fillers. Conclusion: Flexural strength is one of the most significant properties of restorative dental materials. The higher flexural strength and flexural modulus can be achieved by stronger ceramic fillers. Any further investigation in this field would be beneficial in the development of restorative dental materials.http://journals.tums.ac.ir/PdfMed.aspx?pdf_med=/upload_files/pdf/1932.pdf&manuscript_id=1932Dental compositeFiller typeLithium disilicateMechanical properties |
| spellingShingle | Pahlavan A. Ataei M. Zandi-Nejad AA Effect of three filler types on mechanical properties of dental composite Journal of Dental Medicine Dental composite Filler type Lithium disilicate Mechanical properties |
| title | Effect of three filler types on mechanical properties of dental composite |
| title_full | Effect of three filler types on mechanical properties of dental composite |
| title_fullStr | Effect of three filler types on mechanical properties of dental composite |
| title_full_unstemmed | Effect of three filler types on mechanical properties of dental composite |
| title_short | Effect of three filler types on mechanical properties of dental composite |
| title_sort | effect of three filler types on mechanical properties of dental composite |
| topic | Dental composite Filler type Lithium disilicate Mechanical properties |
| url | http://journals.tums.ac.ir/PdfMed.aspx?pdf_med=/upload_files/pdf/1932.pdf&manuscript_id=1932 |
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