title: A prospective clinical study of polycarboxylate  cement in periapical surgery.
abstract: OBJECTIVE
  To evaluate the clinical efficacy of polycarboxylate cement as retrograde filling material.
  
  
  METHODS
  A prospective clinical study was made of 25 patients subjected to periapical surgery with ultrasound and magnifying loupes, in which polycarboxylate cement was used as retrograde filling material. Measurements were made of the area and diameter of the lesions pre- and postoperatively, and 6 and 12 months after the operation. The apical resection and retrograde filling areas were also measured, and the prognosis following surgery was recorded.
  
  
  RESULTS
  A total of 23 patients with 31 apicoectomized teeth were studied (2 patients being lost to follow-up). The mean area of the periapical lesions before surgery was 52.25 mm2, with a mean major diameter of 6.1 mm and a mean lesser diameter of 4.8 mm. The success rate after 12 months was 54.7%, according to the criteria of Von Arx and Kurt. The prognosis was poorer in females, in larger lesions, and in cases with larger retrograde filling areas.
  
  
  CONCLUSIONS
  Polycarboxylate cement offers good results, with important bone regeneration after periapical surgery.
authors.affiliation: Clínicas Odontológicas, Gascó Oliag 1, 46021 Valencia, Spain. maria.penarrocha@uv.es
authors.forename: M-A
authors.initials: MA
authors.lastname: Peñarrocha-Diago
authors.forename: B
authors.initials: B
authors.lastname: Ortega-Sánchez
authors.forename: B
authors.initials: B
authors.lastname: García-Mira
authors.forename: L
authors.initials: L
authors.lastname: Maestre-Ferrín
authors.forename: D
authors.initials: D
authors.lastname: Peñarrocha-Oltra
authors.forename: C
authors.initials: C
authors.lastname: Gay-Escoda
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019647:Oral Surgical Procedures / Q000379:methods*; D010486:Periapical Tissue / Q000601:surgery*; D011076:Polycarboxylate Cement; D011446:Prospective Studies; D059708:Ultrasonic Surgical Procedures; D055815:Young Adult
chemical_list: D011076:Polycarboxylate Cement