The Impact of Different Fiber Placement Techniques on the Fracture Resistance of Premolars Restored with Direct Resin Composite, In Vitro Study
Fiber-reinforced composites (FRCs) are recognized for enhancing the fracture resistance of structurally compromised teeth. However, the optimal orientation and placement of fibers in direct resin composite restorations remain under debate. This study aimed to evaluate the fracture resistance of maxi...
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MDPI AG
2025-06-01
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| Series: | Journal of Functional Biomaterials |
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| author | Reham Hesham Ibrahim Dina Wafik ElKassas Sameh Mahmoud Nabih Mennatallah Naguib Salem Rasha Haridy |
| author_facet | Reham Hesham Ibrahim Dina Wafik ElKassas Sameh Mahmoud Nabih Mennatallah Naguib Salem Rasha Haridy |
| author_sort | Reham Hesham Ibrahim |
| collection | DOAJ |
| description | Fiber-reinforced composites (FRCs) are recognized for enhancing the fracture resistance of structurally compromised teeth. However, the optimal orientation and placement of fibers in direct resin composite restorations remain under debate. This study aimed to evaluate the fracture resistance of maxillary premolars with mesio-occluso-distal (MOD) cavities restored using polyethylene fibers with different placement techniques, compared to conventional incremental composite restoration. Methods: Sixty intact maxillary premolars were randomly assigned to six groups (n = 10). Group 1: intact teeth (positive control); Group 2: MOD cavity without restoration (negative control); Group 3: MOD cavity restored with nanohybrid composite using the incremental technique; Group 4: polyethylene fiber placed on the pulpal floor; Group 5: fiber placed circumferentially along cavity walls (wall-papering technique); Group 6: fiber placed buccolingually in an occlusal groove (occlusal splinting). Fracture resistance was assessed using a universal testing machine. Failure mode was also analyzed. Results: Group 6 (occlusal splinting) exhibited the highest fracture resistance (1137.72 ± 316.20 N), significantly exceeding Group 3 (546.93 ± 59.89 N) and other fiber-reinforced groups (<i>p</i> < 0.05). Failure mode analysis revealed no significant differences between the fiber-reinforced groups and the intact teeth. Group 6 also had the highest percentage of restorable fractures (90%). Conclusions: Incorporating polyethylene fibers, especially through occlusal splinting, significantly improves fracture resistance in MOD-restored maxillary premolars. This technique may offer a promising alternative to conventional composite restorations in structurally weakened posterior teeth. |
| format | Article |
| id | doaj-art-1d41933682b34df39a22a6715fb65b33 |
| institution | Kabale University |
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| language | English |
| publishDate | 2025-06-01 |
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| series | Journal of Functional Biomaterials |
| spelling | doaj-art-1d41933682b34df39a22a6715fb65b332025-08-20T03:27:37ZengMDPI AGJournal of Functional Biomaterials2079-49832025-06-0116622510.3390/jfb16060225The Impact of Different Fiber Placement Techniques on the Fracture Resistance of Premolars Restored with Direct Resin Composite, In Vitro StudyReham Hesham Ibrahim0Dina Wafik ElKassas1Sameh Mahmoud Nabih2Mennatallah Naguib Salem3Rasha Haridy4Conservative Dentistry Department (Restorative Division), Faculty of Oral and Dental Medicine, Misr International University, Cairo 11785, EgyptDepartment of Clinical Dental Sciences, College of Dentistry, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi ArabiaRestorative Dentistry Department, Faculty of Dental Medicine (Boys, Cairo), Al-Azhar University, Cairo 11361, EgyptConservative Dentistry Department (Restorative Division), Faculty of Oral and Dental Medicine, Misr International University, Cairo 11785, EgyptDepartment of Clinical Dental Sciences, College of Dentistry, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi ArabiaFiber-reinforced composites (FRCs) are recognized for enhancing the fracture resistance of structurally compromised teeth. However, the optimal orientation and placement of fibers in direct resin composite restorations remain under debate. This study aimed to evaluate the fracture resistance of maxillary premolars with mesio-occluso-distal (MOD) cavities restored using polyethylene fibers with different placement techniques, compared to conventional incremental composite restoration. Methods: Sixty intact maxillary premolars were randomly assigned to six groups (n = 10). Group 1: intact teeth (positive control); Group 2: MOD cavity without restoration (negative control); Group 3: MOD cavity restored with nanohybrid composite using the incremental technique; Group 4: polyethylene fiber placed on the pulpal floor; Group 5: fiber placed circumferentially along cavity walls (wall-papering technique); Group 6: fiber placed buccolingually in an occlusal groove (occlusal splinting). Fracture resistance was assessed using a universal testing machine. Failure mode was also analyzed. Results: Group 6 (occlusal splinting) exhibited the highest fracture resistance (1137.72 ± 316.20 N), significantly exceeding Group 3 (546.93 ± 59.89 N) and other fiber-reinforced groups (<i>p</i> < 0.05). Failure mode analysis revealed no significant differences between the fiber-reinforced groups and the intact teeth. Group 6 also had the highest percentage of restorable fractures (90%). Conclusions: Incorporating polyethylene fibers, especially through occlusal splinting, significantly improves fracture resistance in MOD-restored maxillary premolars. This technique may offer a promising alternative to conventional composite restorations in structurally weakened posterior teeth.https://www.mdpi.com/2079-4983/16/6/225fiber-reinforced compositefracture resistancepolyethyleneocclusal splintingwallpapering |
| spellingShingle | Reham Hesham Ibrahim Dina Wafik ElKassas Sameh Mahmoud Nabih Mennatallah Naguib Salem Rasha Haridy The Impact of Different Fiber Placement Techniques on the Fracture Resistance of Premolars Restored with Direct Resin Composite, In Vitro Study Journal of Functional Biomaterials fiber-reinforced composite fracture resistance polyethylene occlusal splinting wallpapering |
| title | The Impact of Different Fiber Placement Techniques on the Fracture Resistance of Premolars Restored with Direct Resin Composite, In Vitro Study |
| title_full | The Impact of Different Fiber Placement Techniques on the Fracture Resistance of Premolars Restored with Direct Resin Composite, In Vitro Study |
| title_fullStr | The Impact of Different Fiber Placement Techniques on the Fracture Resistance of Premolars Restored with Direct Resin Composite, In Vitro Study |
| title_full_unstemmed | The Impact of Different Fiber Placement Techniques on the Fracture Resistance of Premolars Restored with Direct Resin Composite, In Vitro Study |
| title_short | The Impact of Different Fiber Placement Techniques on the Fracture Resistance of Premolars Restored with Direct Resin Composite, In Vitro Study |
| title_sort | impact of different fiber placement techniques on the fracture resistance of premolars restored with direct resin composite in vitro study |
| topic | fiber-reinforced composite fracture resistance polyethylene occlusal splinting wallpapering |
| url | https://www.mdpi.com/2079-4983/16/6/225 |
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