Finite Element Analysis of the Mechanical Performance of Non-Restorable Crownless Primary Molars Restored with Intracoronal Core-Supported Crowns: A Proposed Treatment Alternative to Extraction for Severe Early Childhood Caries
Early childhood caries (ECC) involve extensive coronal tooth structure loss, and tooth reconstruction remains highly challenging. To fulfill preclinical assessment, the present study investigated the biomechanics of non-restorable crownless primary molars that were restored by stainless steel crowns...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-02-01
|
| Series: | Journal of Clinical Medicine |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-0383/12/5/1872 |
| _version_ | 1797615006289756160 |
|---|---|
| author | Kunyawan Thaungwilai Yanee Tantilertanant Weerachai Singhatanadgit Pairod Singhatanadgid |
| author_facet | Kunyawan Thaungwilai Yanee Tantilertanant Weerachai Singhatanadgit Pairod Singhatanadgid |
| author_sort | Kunyawan Thaungwilai |
| collection | DOAJ |
| description | Early childhood caries (ECC) involve extensive coronal tooth structure loss, and tooth reconstruction remains highly challenging. To fulfill preclinical assessment, the present study investigated the biomechanics of non-restorable crownless primary molars that were restored by stainless steel crowns (SSC) using different composite core build-up materials. Computer-aided design-integrated 3D finite element and modified Goodman fatigue analyses were performed to determine stress distribution, risk of failure, fatigue life and dentine–material interfacial strength for the restored crownless primary molars. A dual-cured resin composite (MultiCore Flow), a light-cured bulk-fill resin composite (Filtek Bulk Fill posterior), a resin-modified glass-ionomer cement (Fuji II LC) and a nano-filled resin-modified glass-ionomer cement (NRMGIC; Ketac N100) were used as core build-up composite materials in the simulated models. The finite element analysis showed that types of core build-up materials affected the maximum von Mises stress only in the core materials (<i>p</i>-value = 0.0339). NRMGIC demonstrated the lowest von Mises stresses and revealed the highest minimum safety factor. The weakest sites were along the central grooves regardless of type of material, and the ratio of shear bond strength to maximum shear stress at the core–dentine interface of the NRMGIC group was lowest among the tested composite cores. However, all groups provided lifetime longevity from the fatigue analysis. In conclusion, core build-up materials differentially influenced the von Mises stress (magnitude and distribution) and the safety factor in crownless primary molars restored with core-supported SSC. However, all materials and the remaining dentine of crownless primary molars provided lifetime longevity. The reconstruction by core-supported SSC, as an alternative to tooth extraction, may successfully restore non-restorable crownless primary molars without unfavorable failures throughout their lifespan. Further clinical studies are required to evaluate the clinical performance and suitability of this proposed method. |
| first_indexed | 2024-03-11T07:20:22Z |
| format | Article |
| id | doaj.art-3536bd92da644a569dfe4e8a820f0033 |
| institution | Directory Open Access Journal |
| issn | 2077-0383 |
| language | English |
| last_indexed | 2024-03-11T07:20:22Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Clinical Medicine |
| spelling | doaj.art-3536bd92da644a569dfe4e8a820f00332023-11-17T07:59:28ZengMDPI AGJournal of Clinical Medicine2077-03832023-02-01125187210.3390/jcm12051872Finite Element Analysis of the Mechanical Performance of Non-Restorable Crownless Primary Molars Restored with Intracoronal Core-Supported Crowns: A Proposed Treatment Alternative to Extraction for Severe Early Childhood CariesKunyawan Thaungwilai0Yanee Tantilertanant1Weerachai Singhatanadgit2Pairod Singhatanadgid3Composite Structures Research Unit, Department of Mechanical Engineering, Faculty of Engineering, Chulalongkorn University, Phyathai Road, Patumwan, Bangkok 10330, ThailandFaculty of Dentistry, Chulalongkorn University, Phyathai Road, Patumwan, Bangkok 10330, ThailandFaculty of Dentistry and Research Unit in Mineralized Tissue Reconstruction, Thammasat University (Rangsit Campus), Paholyothin Road, Klong Luang, Pathumthani 12121, ThailandComposite Structures Research Unit, Department of Mechanical Engineering, Faculty of Engineering, Chulalongkorn University, Phyathai Road, Patumwan, Bangkok 10330, ThailandEarly childhood caries (ECC) involve extensive coronal tooth structure loss, and tooth reconstruction remains highly challenging. To fulfill preclinical assessment, the present study investigated the biomechanics of non-restorable crownless primary molars that were restored by stainless steel crowns (SSC) using different composite core build-up materials. Computer-aided design-integrated 3D finite element and modified Goodman fatigue analyses were performed to determine stress distribution, risk of failure, fatigue life and dentine–material interfacial strength for the restored crownless primary molars. A dual-cured resin composite (MultiCore Flow), a light-cured bulk-fill resin composite (Filtek Bulk Fill posterior), a resin-modified glass-ionomer cement (Fuji II LC) and a nano-filled resin-modified glass-ionomer cement (NRMGIC; Ketac N100) were used as core build-up composite materials in the simulated models. The finite element analysis showed that types of core build-up materials affected the maximum von Mises stress only in the core materials (<i>p</i>-value = 0.0339). NRMGIC demonstrated the lowest von Mises stresses and revealed the highest minimum safety factor. The weakest sites were along the central grooves regardless of type of material, and the ratio of shear bond strength to maximum shear stress at the core–dentine interface of the NRMGIC group was lowest among the tested composite cores. However, all groups provided lifetime longevity from the fatigue analysis. In conclusion, core build-up materials differentially influenced the von Mises stress (magnitude and distribution) and the safety factor in crownless primary molars restored with core-supported SSC. However, all materials and the remaining dentine of crownless primary molars provided lifetime longevity. The reconstruction by core-supported SSC, as an alternative to tooth extraction, may successfully restore non-restorable crownless primary molars without unfavorable failures throughout their lifespan. Further clinical studies are required to evaluate the clinical performance and suitability of this proposed method.https://www.mdpi.com/2077-0383/12/5/1872early childhood cariescore build-upstainless steel crowncrownless primary molarsfinite element analysisfatigue life |
| spellingShingle | Kunyawan Thaungwilai Yanee Tantilertanant Weerachai Singhatanadgit Pairod Singhatanadgid Finite Element Analysis of the Mechanical Performance of Non-Restorable Crownless Primary Molars Restored with Intracoronal Core-Supported Crowns: A Proposed Treatment Alternative to Extraction for Severe Early Childhood Caries Journal of Clinical Medicine early childhood caries core build-up stainless steel crown crownless primary molars finite element analysis fatigue life |
| title | Finite Element Analysis of the Mechanical Performance of Non-Restorable Crownless Primary Molars Restored with Intracoronal Core-Supported Crowns: A Proposed Treatment Alternative to Extraction for Severe Early Childhood Caries |
| title_full | Finite Element Analysis of the Mechanical Performance of Non-Restorable Crownless Primary Molars Restored with Intracoronal Core-Supported Crowns: A Proposed Treatment Alternative to Extraction for Severe Early Childhood Caries |
| title_fullStr | Finite Element Analysis of the Mechanical Performance of Non-Restorable Crownless Primary Molars Restored with Intracoronal Core-Supported Crowns: A Proposed Treatment Alternative to Extraction for Severe Early Childhood Caries |
| title_full_unstemmed | Finite Element Analysis of the Mechanical Performance of Non-Restorable Crownless Primary Molars Restored with Intracoronal Core-Supported Crowns: A Proposed Treatment Alternative to Extraction for Severe Early Childhood Caries |
| title_short | Finite Element Analysis of the Mechanical Performance of Non-Restorable Crownless Primary Molars Restored with Intracoronal Core-Supported Crowns: A Proposed Treatment Alternative to Extraction for Severe Early Childhood Caries |
| title_sort | finite element analysis of the mechanical performance of non restorable crownless primary molars restored with intracoronal core supported crowns a proposed treatment alternative to extraction for severe early childhood caries |
| topic | early childhood caries core build-up stainless steel crown crownless primary molars finite element analysis fatigue life |
| url | https://www.mdpi.com/2077-0383/12/5/1872 |
| work_keys_str_mv | AT kunyawanthaungwilai finiteelementanalysisofthemechanicalperformanceofnonrestorablecrownlessprimarymolarsrestoredwithintracoronalcoresupportedcrownsaproposedtreatmentalternativetoextractionforsevereearlychildhoodcaries AT yaneetantilertanant finiteelementanalysisofthemechanicalperformanceofnonrestorablecrownlessprimarymolarsrestoredwithintracoronalcoresupportedcrownsaproposedtreatmentalternativetoextractionforsevereearlychildhoodcaries AT weerachaisinghatanadgit finiteelementanalysisofthemechanicalperformanceofnonrestorablecrownlessprimarymolarsrestoredwithintracoronalcoresupportedcrownsaproposedtreatmentalternativetoextractionforsevereearlychildhoodcaries AT pairodsinghatanadgid finiteelementanalysisofthemechanicalperformanceofnonrestorablecrownlessprimarymolarsrestoredwithintracoronalcoresupportedcrownsaproposedtreatmentalternativetoextractionforsevereearlychildhoodcaries |