Incidence of invasive cervical resorption in bleached root-filled teeth.
Invasive cervical resorption, a form of external root resorption, has been reported to be associated with intra-coronal bleaching of root-filled teeth and this has raised concerns about carrying out such bleaching procedures. The purpose of the present study was to examine the incidence of invasive cervical resorption in root-filled teeth which had been bleached using a standardized technique. Three observers examined records and radiographs from a total of 158 patients, whose bleaching treatment had been carried out in a specialist endodontic practice. The sample comprised 204 teeth with a review period of between 1 and 19 years. One-hundred-and-fifty-one teeth (77.94 per cent) had an associated history of traumatic injury. All teeth had been treated with a combination of thermocatalytic and 'walking bleach' procedures using 30 per cent hydrogen peroxide. In 54.41 per cent of teeth, gutta-percha and AH26 root-fillings were kept at the height of the cemento-enamel junction while 18.63 per cent were below and 26.96 per cent were above the CEJ. Sealing cement was not placed over the gutta-percha and AH26 root-fillings in any of the teeth in the study. It was found that a total of four teeth from the sample group (1.96 per cent) had developed invasive cervical resorption during the review period. All of these teeth had a history of traumatic injury and the level of gutta-percha was at the CEJ.(ABSTRACT TRUNCATED AT 250 WORDS)
Department of Dentistry, University of Adelaide.
G S
GS
Heithersay
S W
SW
Dahlstrom
P D
PD
Marin
D000293:Adolescent; D000328:Adult; D001729:Bismuth; D002648:Child; D003731:Dental Caries / Q000628:therapy; D003786:Dental Pulp Cavity / Q000187:drug effects; D003788:Dental Pulp Diseases / Q000209:etiology; D004338:Drug Combinations; D004853:Epoxy Resins; D005260:Female; D005500:Follow-Up Studies; D006171:Gutta-Percha; D006801:Humans; D006861:Hydrogen Peroxide / Q000008:administration & dosage / Q000627:therapeutic use; D015994:Incidence; D008297:Male; D008709:Methenamine; D012189:Retrospective Studies; D012387:Root Canal Filling Materials; D012390:Root Canal Therapy; D012391:Root Resorption / Q000209:etiology*; D012834:Silver; D014025:Titanium; D014084:Tooth Avulsion / Q000628:therapy; D014073:Tooth Bleaching / Q000009:adverse effects* / Q000379:methods
D004338:Drug Combinations; D004853:Epoxy Resins; D012387:Root Canal Filling Materials; D012834:Silver; C028044:epoxy resin AH-26; D006171:Gutta-Percha; D006861:Hydrogen Peroxide; D014025:Titanium; D008709:Methenamine; D001729:Bismuth