Composite core-supported stainless steel crowns enhance fracture resistance of severely damaged primary posterior teeth |
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| Affiliation: | 1. Craniofacial Reconstruction Research Cluster, Faculty of Dentistry, Thammasat University (Rangsit Campus), 99 Moo18 Paholyothin Road, Klong Luang, Patumthani, 12121, Thailand;2. Composite Structures Research Unit, Department of Mechanical Engineering, Faculty of Engineering, Chulalongkorn University, Phyathai Road, Patumwan, Bangkok, 10330, Thailand;1. Department of Pediatric and Preventive Dentistry, Government Dental College and Research Institute, Victoria Hospital Complex, Fort Road, Krishna Raja Market, Bangalore, 560002, Karnataka, India;2. Pediatric and Preventive Dentistry, GDC&RI, Bangalore, India;1. Faculty of Dentistry, Thamar University, Dhamar, Yemen;2. Faculty of Dentistry, Mansoura University, Mansoura, Egypt;1. Department of Pediatric & Preventive Dentistry, JSS Dental College & Hospital, JSS Academy of Higher Education & Research, Mysuru, India;2. Department of Oral Pathology & Microbiology, JSS Dental College & Hospital, JSS Academy of Higher Education & Research, Mysuru, India;1. Department of Oncology and Diagnostic Sciences, University of Maryland School of Dentistry, Baltimore, MD, USA;2. University of Maryland School of Dentistry, Baltimore, MD, USA;3. Department of Oncology and Diagnostic Sciences, University of Maryland School of Dentistry, Member, Molecular and Structural Biology Branch, The Marlene and Stewart Greenebaum Center, Baltimore, MD, USA;4. Private practice, San Jose, CA, USA;5. Director of Oral and Maxillofacial Radiology, Department of Oncology and Diagnostic Sciences, University of Maryland School of Dentistry, Baltimore, MD, USA;1. Section of Pediatric Dentistry, Department of Oral Growth and Development, Fukuoka Dental College, 2-15-1 Tamura, Sawara-ku, Fukuoka, 814-0193, Japan;2. Section of Functional Structure, Department of Morphological Biology, Fukuoka Dental College, 2-15-1 Tamura, Sawara-ku, Fukuoka, 814-0193, Japan;3. Kato Dental Office for Children, Sawara-ku, Fukuoka, Japan;1. Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Osaka, Japan;2. Department of Oral and Maxillofacial Radiology, Graduate School of Biomedical and Health Science, Hiroshima University, Hiroshima, Japan |
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| Abstract: | BackgroundExtraction of severely damaged primary teeth has been the common treatment for early childhood caries. The early loss of primary teeth results in poor oral and general health in children.ObjectivesTo assess fracture resistance of severely damaged primary molars restored with intracoronal core with and without stainless steel crown (SSC).Materials and methodsEighty extracted primary molars were divided into 4 groups: Group 1 MOD cavity; Group 2 MOLi cavity; Group 3 MODLi and Group 4 MODBLi. Pulpectomy and core build-up with and without SSC placement were carried out and subjected to fracture resistance testing to examine the load to fracture and type of fracture.ResultsFracture loads of 870–950 N were observed in the fabrication of intracoronal composite core in teeth with 1–2 remaining tooth walls whereas higher fracture load of teeth with extensive loss of all the surrounding wall following intracoronal composite core build-up was 1270 N. Following SSC placement, all groups had higher fracture load, with Group 4 being resisted to the highest force at 5500 N. Without SSC, Group 1 and Group 2 appeared to be restorable whereas Group 3 and Group 4 were non-restorable when fractured. Following SSC placement, all groups showed non-restorable fracture at the root furcation.ConclusionsCombined intracoronal core and SSC significantly strengthen the restored severely damaged primary molars with severe loss of coronal tooth structures. This proposed restoration method provided resistance to occlusal load that is much higher than the physiologic chewing force in children. |
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| Keywords: | Severely damaged primary tooth Core build-up Stainless steel crown Dental caries Fracture resistance |
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