title: Outcome of root canal treatment in dogs determined by periapical radiography and cone-beam computed tomography scans.
abstract: The purpose of this study was to compare the favorable outcome of root canal treatment determined by periapical radiographs (PRs) and cone beam computed tomography (CBCT) scans. Ninety-six roots of dogs' teeth were used to form four groups (n= 24). In group 1, root canal treatments were performed in healthy teeth. Root canals in groups 2 through 4 were infected until apical periodontitis (AP) was radiographically confirmed. Roots with AP were treated by one-visit therapy in group 2, by two-visit therapy in group 3, and left untreated in group 4. The radiolucent area in the PRs and the volume of CBCT-scanned periapical lesions were measured before and 6 months after the treatment. In groups 1, 2, and 3, a favorable outcome (lesions absent or reduced) was shown in 57 (79%) roots using PRs but only in 25 (35%) roots using CBCT scans (p = 0.0001). Unfavorable outcomes occurred more frequently after one-visit therapy than two-visit therapy when determined by CBCT scans (p = 0.023).
authors.affiliation: Department of Pediatric Clinics, Preventive and Social Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil. Franciscogarcia@forp.usp.br
authors.forename: Francisco Wanderley
authors.initials: FW
authors.lastname: Garcia de Paula-Silva
authors.forename: Bassam
authors.initials: B
authors.lastname: Hassan
authors.forename: Léa Assed
authors.initials: LA
authors.lastname: Bezerra da Silva
authors.forename: Mário Roberto
authors.initials: MR
authors.lastname: Leonardo
authors.forename: Min-Kai
authors.initials: MK
authors.lastname: Wu
mesh_terms: D000818:Animals; D001641:Bicuspid / Q000000981:diagnostic imaging; D002126:Calcium Hydroxide / Q000627:therapeutic use; D003188:Composite Resins; D054893:Cone-Beam Computed Tomography / Q000379:methods*; D003723:Dental Amalgam; D003786:Dental Pulp Cavity / Q000000981:diagnostic imaging*; D003793:Dental Restoration, Permanent; D004285:Dogs; D004853:Epoxy Resins / Q000627:therapeutic use; D005899:Glass Ionomer Cements; D006171:Gutta-Percha / Q000627:therapeutic use; D008768:Methylmethacrylates / Q000627:therapeutic use; D010485:Periapical Periodontitis / Q000000981:diagnostic imaging / Q000628:therapy; D010486:Periapical Tissue / Q000000981:diagnostic imaging; D019252:Radiography, Dental, Digital / Q000379:methods; D012387:Root Canal Filling Materials / Q000627:therapeutic use; D012388:Root Canal Irrigants / Q000627:therapeutic use; D018915:Root Canal Preparation / Q000379:methods; D012390:Root Canal Therapy / Q000379:methods; D012973:Sodium Hypochlorite / Q000627:therapeutic use; D013997:Time Factors; D016896:Treatment Outcome; D015035:Zinc Oxide-Eugenol Cement / Q000627:therapeutic use
chemical_list: D003188:Composite Resins; D004853:Epoxy Resins; D005899:Glass Ionomer Cements; D008768:Methylmethacrylates; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; C084550:Vitremer; D015035:Zinc Oxide-Eugenol Cement; C534916:epoxy resin-based root canal sealer; C031667:IRM cement; D003723:Dental Amalgam; D006171:Gutta-Percha; D012973:Sodium Hypochlorite; D002126:Calcium Hydroxide