title: Clinical and radiographic outcomes of the use of four dressing materials in pulpotomized primary molars: a randomized clinical trial with 2-year follow-up.
abstract: BACKGROUND
  Although multiple materials have been suggested for pulpotomized primary molars, there is no reliable evidence of the superiority of one particular type.
  
  
  OBJECTIVE
  To compare the effectiveness of formocresol (FC), mineral trioxide aggregate (MTA), ferric sulphate, and sodium hypochlorite (NaOCl) as pulp dressing agents in primary molars after 2 years.
  
  
  METHODS
  One hundred primary molars requiring pulp treatment were allocated randomly to the control (FC) and experimental groups (MTA, ferric sulphate, and NaOCl). Clinical and radiographic evaluations were performed at 6, 12, 18, and 24 months. Statistical analysis using Fischer's exact test was performed to determine the significant differences between groups.
  
  
  RESULTS
  In the FC and MTA groups, 100% of the available teeth were clinically successful at all follow-up appointments. In the NaOCl group, one clinical failure was found at 18 months, and two clinical failures in the ferric sulphate group were noted at 12 and 24 months, but no significant differences were found among the groups (P = 0.41). No significant differences in radiographic success were found among all the groups at 24 months of follow-up (P = 0.303).
  
  
  CONCLUSIONS
  No statistically significant differences among the four materials were found at 24 months suggesting that NaOCl may be an appropriate substitute for FC.
authors.affiliation: Department of Paedodontics, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Barcelona, Spain.
authors.forename: Cristina Cuadros
authors.initials: CC
authors.lastname: Fernández
authors.forename: Sandra Sáez
authors.initials: SS
authors.lastname: Martínez
authors.forename: Francisco Guinot
authors.initials: FG
authors.lastname: Jimeno
authors.forename: Ana I
authors.initials: AI
authors.lastname: Lorente Rodríguez
authors.forename: Montse
authors.initials: M
authors.lastname: Mercadé
mesh_terms: D000293:Adolescent; D017607:Aluminum Compounds / Q000008:administration & dosage; D017610:Calcium Compounds / Q000008:administration & dosage; D002648:Child; D004338:Drug Combinations; D005260:Female; D005290:Ferric Compounds / Q000008:administration & dosage; D005500:Follow-Up Studies; D005566:Formocresols / Q000008:administration & dosage; D006801:Humans; D008297:Male; D008963:Molar / Q000000981:diagnostic imaging / Q000601:surgery*; D010087:Oxides / Q000008:administration & dosage; D011672:Pulpotomy; D011859:Radiography; D012387:Root Canal Filling Materials; D017640:Silicates / Q000008:administration & dosage; D012973:Sodium Hypochlorite / Q000008:administration & dosage; D014094:Tooth, Deciduous / Q000000981:diagnostic imaging / Q000601:surgery*; D016896:Treatment Outcome
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D005290:Ferric Compounds; D005566:Formocresols; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate; C031025:formocresol; C024823:ferric sulfate; D012973:Sodium Hypochlorite