title: Retrospective analysis of open apex teeth obturated with mineral trioxide aggregate.
abstract: This study is a retrospective analysis of the outcome of initial nonsurgical root canal treatment of teeth with open apices, obturated with mineral trioxide aggregate when no apical barrier existed. One hundred sixteen patients from a single private endodontic office were treated between 1999 and 2006. Treatments on 144 teeth were completed either in one (92/144) or two visits with an interim calcium hydroxide interappointment medication (52/144). Fifty-four percent (78/144) of the teeth were available for recall (60.3% one visit and 39.7% two visits). The maximum time to recall was 4.87 years. The mean time to recall was 19.4 months. Of the cases recalled for period of 1 year or longer, 93.5% of teeth treated in 1 visit healed, and 90.5% of teeth treated in 2 visits healed.
authors.affiliation: Private Practice limited to Endodontics, Plano, Texas, USA. dewspoon@ntendo.com
authors.forename: David E
authors.initials: DE
authors.lastname: Witherspoon
authors.forename: Joel C
authors.initials: JC
authors.lastname: Small
authors.forename: John D
authors.initials: JD
authors.lastname: Regan
authors.forename: Martha
authors.initials: M
authors.lastname: Nunn
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D017607:Aluminum Compounds / Q000627:therapeutic use*; D000891:Anti-Infective Agents, Local / Q000627:therapeutic use; D017610:Calcium Compounds / Q000627:therapeutic use*; D002126:Calcium Hydroxide / Q000627:therapeutic use; D002614:Chelating Agents / Q000627:therapeutic use; D002648:Child; D002710:Chlorhexidine / Q000627:therapeutic use; D004338:Drug Combinations; D004492:Edetic Acid / Q000627:therapeutic use; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D010087:Oxides / Q000627:therapeutic use*; D010483:Periapical Diseases / Q000628:therapy; D012189:Retrospective Studies; D012387:Root Canal Filling Materials / Q000627:therapeutic use*; D012388:Root Canal Irrigants / Q000627:therapeutic use; D012389:Root Canal Obturation / Q000379:methods*; D018915:Root Canal Preparation / Q000295:instrumentation / Q000379:methods; D012390:Root Canal Therapy / Q000379:methods; D017640:Silicates / Q000627:therapeutic use*; D016369:Smear Layer; D012973:Sodium Hypochlorite / Q000627:therapeutic use; D019227:Tooth Apex / Q000473:pathology*; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D017607:Aluminum Compounds; D000891:Anti-Infective Agents, Local; D017610:Calcium Compounds; D002614:Chelating Agents; D004338:Drug Combinations; D010087:Oxides; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; D017640:Silicates; C086631:mineral trioxide aggregate; D004492:Edetic Acid; D012973:Sodium Hypochlorite; D002126:Calcium Hydroxide; D002710:Chlorhexidine