title: Perforating internal root resorption repaired with mineral trioxide aggregate caused complete resolution of odontogenic sinus mucositis: a case report.
abstract: BACKGROUND
  An extensive perforating internal root resorption accompanied by apical periodontitis and odontogenic sinus mucositis was detected on preoperative cone-beam computed tomographic scans in a first maxillary molar.
  
  
  METHODS
  After the chemomechanical debridement of the root canals, calcium hydroxide was placed as a temporary dressing for 7 days. Mineral trioxide aggregate was used to fill the perforation site with the aid of a surgical microscope. At the next visit, the root with the resorption defect was filled with warm vertical compaction of gutta-percha.
  
  
  RESULTS
  A control cone-beam computed tomographic scan acquired 6 months after the endodontic treatment revealed complete resolution of the sinus retention cyst. Moreover, the patient's frequent otolaryngologic disturbances ceased. The tooth was functional with satisfactory clinical and radiographic results after 12 months.
  
  
  CONCLUSIONS
  Based on the results of this case, successful repair of an extensive, perforating internal resorption with mineral trioxide aggregate may lead to complete resolution of apical periodontitis and maxillary sinus retention cyst.
authors.affiliation: Department of Conservative Dentistry with Endodontics, Pomeranian Medical University, Szczecin, Poland. Electronic address: majabendyk@gmail.com.
authors.forename: Maja
authors.initials: M
authors.lastname: Bendyk-Szeffer
authors.affiliation: Department of Conservative Dentistry with Endodontics, Pomeranian Medical University, Szczecin, Poland.
authors.forename: Ryta
authors.initials: R
authors.lastname: Łagocka
authors.affiliation: Department of Conservative Dentistry with Endodontics, Pomeranian Medical University, Szczecin, Poland.
authors.forename: Matylda
authors.initials: M
authors.lastname: Trusewicz
authors.affiliation: Department of Preclinical Conservative Dentistry and Preclinical Endodontics, Pomeranian Medical University, Szczecin, Poland.
authors.forename: Mariusz
authors.initials: M
authors.lastname: Lipski
authors.affiliation: Department of Conservative Dentistry with Endodontics, Pomeranian Medical University, Szczecin, Poland.
authors.forename: Jadwiga
authors.initials: J
authors.lastname: Buczkowska-Radlińska
mesh_terms: D000328:Adult; D017607:Aluminum Compounds / Q000008:administration & dosage*; D017610:Calcium Compounds / Q000008:administration & dosage*; D054893:Cone-Beam Computed Tomography; D004338:Drug Combinations; D006801:Humans; D008297:Male; D008963:Molar / Q000000981:diagnostic imaging / Q000187:drug effects* / Q000473:pathology; D010087:Oxides / Q000008:administration & dosage*; D012387:Root Canal Filling Materials / Q000627:therapeutic use; D012390:Root Canal Therapy; D012391:Root Resorption / Q000000981:diagnostic imaging / Q000188:drug therapy* / Q000473:pathology; D017640:Silicates / Q000008:administration & dosage*
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate
keywords: Cone-beam computed tomography; maxillary sinus mucositis; mineral trioxide aggregate; perforating internal root resorption