The in vitro assessment of the degree of monomer conversion, biaxial flexural strength, and mineral precipitation on demineralised dentine of novel resin composite containing monocalcium phosphate monohydrate and polylysine
Objective: The development of ion-releasing resin composites is expected to reduce the risk of secondary caries. This study compared the degree of monomer conversion, biaxial flexural strength/modulus, elemental release, and remineralisation potential of a novel ion-releasing dental composite (Rene...
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Medical Journals Sweden
2025-08-01
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| Series: | Biomaterial Investigations in Dentistry |
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| Online Access: | https://medicaljournalssweden.se/biid/article/view/44551 |
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| author | Munchuporn Pariwatanasak Saowapa Chadarat Wisitsin Potiprapanpong Sukanya Kyopun Anne M. Young Piyaphong Panpisut |
| author_facet | Munchuporn Pariwatanasak Saowapa Chadarat Wisitsin Potiprapanpong Sukanya Kyopun Anne M. Young Piyaphong Panpisut |
| author_sort | Munchuporn Pariwatanasak |
| collection | DOAJ |
| description |
Objective: The development of ion-releasing resin composites is expected to reduce the risk of secondary caries. This study compared the degree of monomer conversion, biaxial flexural strength/modulus, elemental release, and remineralisation potential of a novel ion-releasing dental composite (Renewal MI) containing monocalcium phosphate monohydrate and polylysine.
Materials and methods: The degree of monomer conversion after light curing for 20 s was determined (n = 8). The biaxial flexural strength and modulus after immersion in water for 24 h (n = 8) were evaluated. Additionally, the release of Ca and P after immersion in water for 2 weeks was assessed (n = 3). A disc specimen of the material (n = 1) was attached to the demineralised dentine and then immersed in simulated body fluid for 2 weeks to qualitatively determine mineral precipitation on dentine. The commercial comparison included Filtek Z350 XT, EQUIA Forte HT, FUJI VII, and FUJI II LC.
Results: FUJI II LC demonstrated the highest degree of conversion (97.6%) compared to Renewal MI (57.2%) and Filtek Z350 XT (61.2%). The highest flexural strength was observed in Filtek Z350 XT (271 MPa), followed by MI (135 MPa), FUJI II LC (109 MPa), EQUIA Forte HT (50 MPa), and FUJI VII (35 MPa). The biaxial flexural modulus of Renewal MI (3.2 GPa) was comparable to that of EQUIA FORTE HT (3.8 GPa) and FUJI II LC (3.6 GPa). Ca and P release of MI (11 ppm, 45 ppm) was higher than that of FUJI VII (<0.1 ppm, 0.7 ppm). The precipitation of mineral precipitates in dentinal tubules of demineralised dentine was not detected in all materials.
Conclusion: Renewal MI demonstrated a degree of conversion similar to commercial resin composite but exhibited lower strength. However, its strength was much higher than conventional glass ionomer cements. The material promoted the high release of elements, which was expected to encourage the remineralising actions.
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| format | Article |
| id | doaj-art-13d57c5c91fe45a9a42be230b4c91c6d |
| institution | Kabale University |
| issn | 2641-5275 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Medical Journals Sweden |
| record_format | Article |
| series | Biomaterial Investigations in Dentistry |
| spelling | doaj-art-13d57c5c91fe45a9a42be230b4c91c6d2025-08-20T07:05:21ZengMedical Journals SwedenBiomaterial Investigations in Dentistry2641-52752025-08-0112110.2340/biid.v12.44551The in vitro assessment of the degree of monomer conversion, biaxial flexural strength, and mineral precipitation on demineralised dentine of novel resin composite containing monocalcium phosphate monohydrate and polylysineMunchuporn Pariwatanasak0Saowapa Chadarat1Wisitsin Potiprapanpong2Sukanya Kyopun3Anne M. Young4Piyaphong Panpisut5Faculty of Dentistry, Thammasat University, Pathum Thani, ThailandFaculty of Dentistry, Thammasat University, Pathum Thani, ThailandFaculty of Dentistry, Thammasat University, Pathum Thani, ThailandDepartment of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, Royal Free Hospital, Rowland Hill Street, London, UK; School of Dentistry, Mae Fah Luang University, Chiang Rai, ThailandDepartment of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, Royal Free Hospital, Rowland Hill Street, London, UKFaculty of Dentistry, Thammasat University, Pathum Thani, Thailand; Thammasat University Research Unit in Dental and Bone Substitute Biomaterials, Thammasat University, Pathum Thani, Thailand Objective: The development of ion-releasing resin composites is expected to reduce the risk of secondary caries. This study compared the degree of monomer conversion, biaxial flexural strength/modulus, elemental release, and remineralisation potential of a novel ion-releasing dental composite (Renewal MI) containing monocalcium phosphate monohydrate and polylysine. Materials and methods: The degree of monomer conversion after light curing for 20 s was determined (n = 8). The biaxial flexural strength and modulus after immersion in water for 24 h (n = 8) were evaluated. Additionally, the release of Ca and P after immersion in water for 2 weeks was assessed (n = 3). A disc specimen of the material (n = 1) was attached to the demineralised dentine and then immersed in simulated body fluid for 2 weeks to qualitatively determine mineral precipitation on dentine. The commercial comparison included Filtek Z350 XT, EQUIA Forte HT, FUJI VII, and FUJI II LC. Results: FUJI II LC demonstrated the highest degree of conversion (97.6%) compared to Renewal MI (57.2%) and Filtek Z350 XT (61.2%). The highest flexural strength was observed in Filtek Z350 XT (271 MPa), followed by MI (135 MPa), FUJI II LC (109 MPa), EQUIA Forte HT (50 MPa), and FUJI VII (35 MPa). The biaxial flexural modulus of Renewal MI (3.2 GPa) was comparable to that of EQUIA FORTE HT (3.8 GPa) and FUJI II LC (3.6 GPa). Ca and P release of MI (11 ppm, 45 ppm) was higher than that of FUJI VII (<0.1 ppm, 0.7 ppm). The precipitation of mineral precipitates in dentinal tubules of demineralised dentine was not detected in all materials. Conclusion: Renewal MI demonstrated a degree of conversion similar to commercial resin composite but exhibited lower strength. However, its strength was much higher than conventional glass ionomer cements. The material promoted the high release of elements, which was expected to encourage the remineralising actions. https://medicaljournalssweden.se/biid/article/view/44551Resin compositebiaxial flexural strengthmonocalcium phosphate monohydratepolylysinedegree of monomer conversionremineralisation |
| spellingShingle | Munchuporn Pariwatanasak Saowapa Chadarat Wisitsin Potiprapanpong Sukanya Kyopun Anne M. Young Piyaphong Panpisut The in vitro assessment of the degree of monomer conversion, biaxial flexural strength, and mineral precipitation on demineralised dentine of novel resin composite containing monocalcium phosphate monohydrate and polylysine Biomaterial Investigations in Dentistry Resin composite biaxial flexural strength monocalcium phosphate monohydrate polylysine degree of monomer conversion remineralisation |
| title | The in vitro assessment of the degree of monomer conversion, biaxial flexural strength, and mineral precipitation on demineralised dentine of novel resin composite containing monocalcium phosphate monohydrate and polylysine |
| title_full | The in vitro assessment of the degree of monomer conversion, biaxial flexural strength, and mineral precipitation on demineralised dentine of novel resin composite containing monocalcium phosphate monohydrate and polylysine |
| title_fullStr | The in vitro assessment of the degree of monomer conversion, biaxial flexural strength, and mineral precipitation on demineralised dentine of novel resin composite containing monocalcium phosphate monohydrate and polylysine |
| title_full_unstemmed | The in vitro assessment of the degree of monomer conversion, biaxial flexural strength, and mineral precipitation on demineralised dentine of novel resin composite containing monocalcium phosphate monohydrate and polylysine |
| title_short | The in vitro assessment of the degree of monomer conversion, biaxial flexural strength, and mineral precipitation on demineralised dentine of novel resin composite containing monocalcium phosphate monohydrate and polylysine |
| title_sort | in vitro assessment of the degree of monomer conversion biaxial flexural strength and mineral precipitation on demineralised dentine of novel resin composite containing monocalcium phosphate monohydrate and polylysine |
| topic | Resin composite biaxial flexural strength monocalcium phosphate monohydrate polylysine degree of monomer conversion remineralisation |
| url | https://medicaljournalssweden.se/biid/article/view/44551 |
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