Effect of several tooth-colored restorative materials on reinforcement of unsupported enamel
Introduction: Adhesive restorations properly transmit and distribute functional stresses at the bonding interface to tooth structures and have the potential to reinforce remaining weakened tooth structures after removal of extensive carious lesions. This study evaluated the effect of a number of adh...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | fas |
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Isfahan University of Medical Sciences
2012-01-01
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| Series: | مجله دانشکده دندانپزشکی اصفهان |
| Subjects: | |
| Online Access: | http://www.jids.mui.ac.ir/index.php/jids/article/view/524 |
| _version_ | 1797725524545503232 |
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| author | Mohammadreza Malekipour Farzaneh Shirani Parvin Mirzakoucheki Samaneh Alaei Mehran Safaei Zahra Hashemzadeh |
| author_facet | Mohammadreza Malekipour Farzaneh Shirani Parvin Mirzakoucheki Samaneh Alaei Mehran Safaei Zahra Hashemzadeh |
| author_sort | Mohammadreza Malekipour |
| collection | DOAJ |
| description | Introduction: Adhesive restorations properly transmit and distribute functional stresses at the bonding interface to tooth structures and have the potential to reinforce remaining weakened tooth structures after removal of extensive carious lesions. This study evaluated the effect of a number of adhesive restorative materials on reinforcing unsupported enamel. Materials and Methods: Seventy-five extracted sound maxillary premolars collected over 3 months and stored in 0.2% thymol solution received MOD cavities; the lingual cusps were reduced up to the pulp level. The specimens were divided into five groups (n=15). In group 1 (the positive control), dentinal tissue of the buccal wall was preserved. In other groups the buccal dentin was completely removed. In group 2 (the negative control), no restorative material was used to replace the lost dentin. The removed buccal dentin was replaced with composite resin, flowable composite resin and glass-ionomer in groups 3, 4 and 5, respectively. After thermocycling, the specimens were tested in an Instron universal testing machine. Data were analyzed with ANOVA and LSD test (a < 0.05). Results: The mean and standard deviations of fracture loads of the five groups were 122.97 ± 15.11, 44.71 ± 14.23, 78.32±17.58, 81.17 ± 19.53, and 85.33 ± 22.07 Newtons, respectively. One-way ANOVA revealed significant differences between the groups (p value = 0.00). There were significant differences in fracture loads between groups 1 and 2 and others (p value = 0.00). The difference in fracture loads between group 3 and 4 (p value = 0.678), groups 3 and 5 (p value = 0.344), and groups 4 and 5 (p value = 0.589) were not significant. Conclusion: It can be concluded that the three types of adhesive restorative materials in this study can reinforce unsupported enamel to a certain degree. Key words: Composite resin, Dental adhesives, Reinforcement, Tooth enamel. |
| first_indexed | 2024-03-12T10:32:30Z |
| format | Article |
| id | doaj.art-3553b8d7cea944c9a768c5e91a60fd5a |
| institution | Directory Open Access Journal |
| issn | 1735-255X 2008-6989 |
| language | fas |
| last_indexed | 2024-03-12T10:32:30Z |
| publishDate | 2012-01-01 |
| publisher | Isfahan University of Medical Sciences |
| record_format | Article |
| series | مجله دانشکده دندانپزشکی اصفهان |
| spelling | doaj.art-3553b8d7cea944c9a768c5e91a60fd5a2023-09-02T09:07:25ZfasIsfahan University of Medical Sciencesمجله دانشکده دندانپزشکی اصفهان1735-255X2008-69892012-01-0184338346Effect of several tooth-colored restorative materials on reinforcement of unsupported enamelMohammadreza MalekipourFarzaneh ShiraniParvin MirzakouchekiSamaneh AlaeiMehran SafaeiZahra HashemzadehIntroduction: Adhesive restorations properly transmit and distribute functional stresses at the bonding interface to tooth structures and have the potential to reinforce remaining weakened tooth structures after removal of extensive carious lesions. This study evaluated the effect of a number of adhesive restorative materials on reinforcing unsupported enamel. Materials and Methods: Seventy-five extracted sound maxillary premolars collected over 3 months and stored in 0.2% thymol solution received MOD cavities; the lingual cusps were reduced up to the pulp level. The specimens were divided into five groups (n=15). In group 1 (the positive control), dentinal tissue of the buccal wall was preserved. In other groups the buccal dentin was completely removed. In group 2 (the negative control), no restorative material was used to replace the lost dentin. The removed buccal dentin was replaced with composite resin, flowable composite resin and glass-ionomer in groups 3, 4 and 5, respectively. After thermocycling, the specimens were tested in an Instron universal testing machine. Data were analyzed with ANOVA and LSD test (a < 0.05). Results: The mean and standard deviations of fracture loads of the five groups were 122.97 ± 15.11, 44.71 ± 14.23, 78.32±17.58, 81.17 ± 19.53, and 85.33 ± 22.07 Newtons, respectively. One-way ANOVA revealed significant differences between the groups (p value = 0.00). There were significant differences in fracture loads between groups 1 and 2 and others (p value = 0.00). The difference in fracture loads between group 3 and 4 (p value = 0.678), groups 3 and 5 (p value = 0.344), and groups 4 and 5 (p value = 0.589) were not significant. Conclusion: It can be concluded that the three types of adhesive restorative materials in this study can reinforce unsupported enamel to a certain degree. Key words: Composite resin, Dental adhesives, Reinforcement, Tooth enamel.http://www.jids.mui.ac.ir/index.php/jids/article/view/524Composite resinDental adhesivesReinforcementTooth enamel. |
| spellingShingle | Mohammadreza Malekipour Farzaneh Shirani Parvin Mirzakoucheki Samaneh Alaei Mehran Safaei Zahra Hashemzadeh Effect of several tooth-colored restorative materials on reinforcement of unsupported enamel مجله دانشکده دندانپزشکی اصفهان Composite resin Dental adhesives Reinforcement Tooth enamel. |
| title | Effect of several tooth-colored restorative materials on reinforcement of unsupported enamel |
| title_full | Effect of several tooth-colored restorative materials on reinforcement of unsupported enamel |
| title_fullStr | Effect of several tooth-colored restorative materials on reinforcement of unsupported enamel |
| title_full_unstemmed | Effect of several tooth-colored restorative materials on reinforcement of unsupported enamel |
| title_short | Effect of several tooth-colored restorative materials on reinforcement of unsupported enamel |
| title_sort | effect of several tooth colored restorative materials on reinforcement of unsupported enamel |
| topic | Composite resin Dental adhesives Reinforcement Tooth enamel. |
| url | http://www.jids.mui.ac.ir/index.php/jids/article/view/524 |
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