title: Reverse sandwich restoration for the management of invasive cervical resorption: a case report.
abstract: BACKGROUND
  Invasive cervical resorption (ICR) may occur as a consequence of trauma, orthodontic treatment, intracoronal bleaching, and surgical procedures and may lead to the progressive and destructive loss of tooth structure. The restoration of these resorptive defects is a challenging task because no single restorative material possesses good sealing ability, reinforcement of remaining tooth structure, and biocompatibility simultaneously.
  
  
  METHODS
  This case presented with invasive cervical resorption class 2 (Heithersay) and apical inflammatory resorption caused by trauma in tooth #9. The surgical management of ICR was performed, and, finally, the roots were externally reinforced by filling the resorptive defect with a combination of composite and resin-modified glass ionomer cement, proposed as reverse sandwich restoration (RSR).
  
  
  RESULTS
  This novel RSR was well tolerated by the periodontal tissues. A follow-up x-ray showed no pathological changes and no recurrence of resorption.
  
  
  CONCLUSIONS
  This case report presents a treatment strategy for root reinforcement that might improve the healing outcomes for patients with invasive cervical resorption.
authors.affiliation: Department of Conservative Dentistry and Endodontics, Sri Ramachandra University, Tamilnadu, India. vinothkumar_ts@yahoo.com
authors.forename: Thilla Sekar
authors.initials: TS
authors.lastname: Vinothkumar
authors.forename: Ramachandran
authors.initials: R
authors.lastname: Tamilselvi
authors.forename: Deivanayagam
authors.initials: D
authors.lastname: Kandaswamy
mesh_terms: D000293:Adolescent; D003188:Composite Resins / Q000737:chemistry; D003764:Dental Materials / Q000737:chemistry; D003790:Dental Pulp Necrosis / Q000150:complications; D003793:Dental Restoration, Permanent / Q000379:methods*; D004853:Epoxy Resins / Q000627:therapeutic use; D005500:Follow-Up Studies; D005899:Glass Ionomer Cements / Q000737:chemistry; D006171:Gutta-Percha / Q000627:therapeutic use; D006801:Humans; D007180:Incisor / Q000293:injuries / Q000473:pathology*; D008297:Male; D019279:Resin Cements / Q000737:chemistry; D012387:Root Canal Filling Materials / Q000627:therapeutic use; D012389:Root Canal Obturation / Q000379:methods; D018915:Root Canal Preparation / Q000379:methods; D012391:Root Resorption / Q000628:therapy; D019227:Tooth Apex / Q000473:pathology; D019237:Tooth Cervix / Q000473:pathology*; D014082:Tooth Fractures / Q000150:complications; D014091:Tooth Resorption / Q000628:therapy*
chemical_list: D003188:Composite Resins; D003764:Dental Materials; D004853:Epoxy Resins; D005899:Glass Ionomer Cements; D019279:Resin Cements; D012387:Root Canal Filling Materials; C534916:epoxy resin-based root canal sealer; D006171:Gutta-Percha