title: Delayed tooth replantation: MTA as root canal filling.
abstract: MTA has been investigated as a root-end filling material. Its mechanism of action has some similarities to that of Ca(OH)2. The purpose of this study was to evaluate the repair process taking place in the delayed replantation of monkey teeth using calcium hydroxide and MTA as root canal filling materials. Five monkeys had their lateral incisors extracted and bench-dried for 60 minutes. After root canal preparation, the teeth were assigned to two groups according to root canal filling material: I, calcium hydroxide; and II, MTA. The same treatment sequence was followed for both groups: coronal seal, periodontal ligament removal, immersion of the tooth in 2% acidulated-phosphate sodium fluoride, irrigation of the socket with saline and replantation. Both groups exhibited replacement resorption, areas of ankylosis and absence of inflammatory root resorption. Statistically similar results (p > 0.05) were observed for both groups regarding replacement root resorption, but the groups differed significantly (p < 0.05) regarding the occurrence of ankylosis. MTA may be a viable clinical option for filling teeth submitted to delayed replantation, and is an acceptable option for treating replanted permanent teeth in order to prevent tooth resorption, particularly when dressing changes are not possible.
authors.affiliation: Department of Surgery and Integrated Clinics, School of Dentistry, Univ Estadual Paulista, Araçatuba, SP, Brazil.
authors.forename: Sônia Regina
authors.initials: SR
authors.lastname: Panzarini
authors.affiliation: Department of Surgery and Integrated Clinics, School of Dentistry, Univ Estadual Paulista, Araçatuba, SP, Brazil.
authors.forename: Celso Koogi
authors.initials: CK
authors.lastname: Sonoda
authors.affiliation: Department of Surgery and Integrated Clinics, School of Dentistry, Univ Estadual Paulista, Araçatuba, SP, Brazil.
authors.forename: Célia Tomiko Matida Hamata
authors.initials: CT
authors.lastname: Saito
authors.affiliation: School of Dentistry, Univ Estadual Paulista, Araçatuba, SP, Brazil.
authors.forename: Elizane Ferreira
authors.initials: EF
authors.lastname: Hamanaka
authors.affiliation: Department of Surgery and Integrated Clinics, School of Dentistry, Univ Estadual Paulista, Araçatuba, SP, Brazil.
authors.forename: Wilson Roberto
authors.initials: WR
authors.lastname: Poi
mesh_terms: D017607:Aluminum Compounds / Q000494:pharmacology* / Q000627:therapeutic use; D000818:Animals; D017610:Calcium Compounds / Q000494:pharmacology* / Q000627:therapeutic use; D002126:Calcium Hydroxide / Q000494:pharmacology / Q000627:therapeutic use; D003804:Dentin / Q000187:drug effects; D004338:Drug Combinations; D000882:Haplorhini; D008297:Male; D010087:Oxides / Q000494:pharmacology* / Q000627:therapeutic use; D015203:Reproducibility of Results; D012387:Root Canal Filling Materials / Q000494:pharmacology* / Q000627:therapeutic use; D018915:Root Canal Preparation / Q000379:methods; D012391:Root Resorption / Q000473:pathology / Q000517:prevention & control; D017640:Silicates / Q000494:pharmacology* / Q000627:therapeutic use; D013499:Surface Properties / Q000187:drug effects; D020254:Tooth Ankylosis / Q000473:pathology / Q000517:prevention & control; D014090:Tooth Replantation / Q000379:methods*; D016896:Treatment Outcome
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate; D002126:Calcium Hydroxide