Polymerization shrinkage-stress of short fiber-reinforced composite
Background: Polymerization shrinkage-related stress of dental composite materials is a clinically relevant problem. In the presence of proper adhesion, shrinkage produces stress in the remaining tooth structure. The greater the destruction, the less the tooth structure is available to withstand the...
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| Format: | Article |
| Language: | English |
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Hungarian Dental Association
2022-12-01
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| Series: | Fogorvosi Szemle |
| Subjects: | |
| Online Access: | https://ojs.mtak.hu/index.php/fogorv-szemle/article/view/9502 |
| _version_ | 1797905491080249344 |
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| author | Viktória Néma Tekla Sáry Lili Fanni Szántó Gábor Braunitzer Márk Fráter |
| author_facet | Viktória Néma Tekla Sáry Lili Fanni Szántó Gábor Braunitzer Márk Fráter |
| author_sort | Viktória Néma |
| collection | DOAJ |
| description | Background: Polymerization shrinkage-related stress of dental composite materials is a clinically relevant problem. In
the presence of proper adhesion, shrinkage produces stress in the remaining tooth structure. The greater the destruction,
the less the tooth structure is available to withstand the stress; thus, causing cracks in the enamel. The purpose of
this in vitro study was to investigate the number of cracks caused by polymerization shrinkage using two different filling
techniques utilising short fibre-reinforced composite (SFRC).
Materials and methods: 40 extracted wisdom teeth, prepared with standardized MOD cavity (5 mm deep and 2,5 mm
wall thickness) were used. After adhesive treatment, teeth were divided into two groups, each restored with SFRC as
follows: Group 1: Bulk-fill technique; Group 2 oblique layering technique (with 2 mm increments). In all specimens, the
SFRC was covered
with 1 mm packable composite resin. After completion of the restoration, the enamel was examined
using a D-Light Pro lamp, and the cracks were documented. In addition, the number of the cracks was further documented
after 1 week period.
Results: There was no significant difference between the groups in respect of the cracks’ number. After 1 week, the
average number in group 1 was 4.95 showing 340% increase, and in Group 2: 4.30 showing the same 340% increase,
which significantly differs to the previously obtained values (p = 0.000). There is no significant difference between the
techniques regarding total sum of cracks after 1 week.
Conclusions: In both techniques, almost an equal number of cracks is developing. During the post-polymerization
period, the number of cracks grows significantly irrespective of the chosen technique. |
| first_indexed | 2024-04-10T10:06:11Z |
| format | Article |
| id | doaj.art-db9909e2aa1a48c2855f5c80a5bc52ae |
| institution | Directory Open Access Journal |
| issn | 2498-8170 |
| language | English |
| last_indexed | 2024-04-10T10:06:11Z |
| publishDate | 2022-12-01 |
| publisher | Hungarian Dental Association |
| record_format | Article |
| series | Fogorvosi Szemle |
| spelling | doaj.art-db9909e2aa1a48c2855f5c80a5bc52ae2023-02-15T20:48:58ZengHungarian Dental AssociationFogorvosi Szemle2498-81702022-12-01115417818210.33891/FSZ.114.4.178-1829502Polymerization shrinkage-stress of short fiber-reinforced compositeViktória Néma0Tekla Sáry1Lili Fanni Szántó2Gábor Braunitzer3Márk Fráter4Szegedi Tudományegyetem, Fogorvostudományi Kar, Konzerváló és Esztétikai Fogászati TanszékSzegedi Tudományegyetem, Fogorvostudományi Kar, Konzerváló és Esztétikai Fogászati TanszékSzegedi Tudományegyetem, Fogorvostudományi Kar, Konzerváló és Esztétikai Fogászati TanszékDicom Lab LtdSzegedi Tudományegyetem, Fogorvostudományi Kar, Konzerváló és Esztétikai Fogászati TanszékBackground: Polymerization shrinkage-related stress of dental composite materials is a clinically relevant problem. In the presence of proper adhesion, shrinkage produces stress in the remaining tooth structure. The greater the destruction, the less the tooth structure is available to withstand the stress; thus, causing cracks in the enamel. The purpose of this in vitro study was to investigate the number of cracks caused by polymerization shrinkage using two different filling techniques utilising short fibre-reinforced composite (SFRC). Materials and methods: 40 extracted wisdom teeth, prepared with standardized MOD cavity (5 mm deep and 2,5 mm wall thickness) were used. After adhesive treatment, teeth were divided into two groups, each restored with SFRC as follows: Group 1: Bulk-fill technique; Group 2 oblique layering technique (with 2 mm increments). In all specimens, the SFRC was covered with 1 mm packable composite resin. After completion of the restoration, the enamel was examined using a D-Light Pro lamp, and the cracks were documented. In addition, the number of the cracks was further documented after 1 week period. Results: There was no significant difference between the groups in respect of the cracks’ number. After 1 week, the average number in group 1 was 4.95 showing 340% increase, and in Group 2: 4.30 showing the same 340% increase, which significantly differs to the previously obtained values (p = 0.000). There is no significant difference between the techniques regarding total sum of cracks after 1 week. Conclusions: In both techniques, almost an equal number of cracks is developing. During the post-polymerization period, the number of cracks grows significantly irrespective of the chosen technique.https://ojs.mtak.hu/index.php/fogorv-szemle/article/view/9502polymerization shrinkagecracksshort fiber-reinforced compositefilling-techniquepost-polymerization |
| spellingShingle | Viktória Néma Tekla Sáry Lili Fanni Szántó Gábor Braunitzer Márk Fráter Polymerization shrinkage-stress of short fiber-reinforced composite Fogorvosi Szemle polymerization shrinkage cracks short fiber-reinforced composite filling-technique post-polymerization |
| title | Polymerization shrinkage-stress of short fiber-reinforced composite |
| title_full | Polymerization shrinkage-stress of short fiber-reinforced composite |
| title_fullStr | Polymerization shrinkage-stress of short fiber-reinforced composite |
| title_full_unstemmed | Polymerization shrinkage-stress of short fiber-reinforced composite |
| title_short | Polymerization shrinkage-stress of short fiber-reinforced composite |
| title_sort | polymerization shrinkage stress of short fiber reinforced composite |
| topic | polymerization shrinkage cracks short fiber-reinforced composite filling-technique post-polymerization |
| url | https://ojs.mtak.hu/index.php/fogorv-szemle/article/view/9502 |
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