title: Volumetric analysis of root canal fillings in primary teeth using spiral computed tomography: an in vitro study.
abstract: OBJECTIVE
  The purpose of this study was to volumetrically analyze the efficacy of root canal fillings in primary teeth using spiral computed tomography (CT).
  
  
  METHODS
  Root canals in 30 primary maxillary and mandibular molars were instrumented with K files to size 30,  and the volumes of the canals were then measured using spiral CT. The teeth were randomly divided into 3 groups of 10 each, and 18 of the canals in each group were evaluated with spiral CT after obturation with zinc oxide eugenol paste, Metapex and Vitapex. The filled volume in each canal  was mea- sured using spiral CT, and the percentage of obturated volume (POV) was calculated. The pre- and post-mean canal volume values within each group and the POV of the 3 groups were statistically analyzed using one-way analysis of variance and paired t tests.
  
  
  RESULTS
  Filler voids were seen in all groups, but there was a statistically significant difference (P <.001) in the calculated POV. Vitapex showed 95% POV compared to Metapex (88%) and ZOE (84%).
  
  
  CONCLUSIONS
  Voids were seen in all 3 filling materials. Vitapex showed the maximum  percentage of obturated volume among the 3 groups.
authors: Department of Pediatric Dentistry, KSR Institute of Dental Science and Research, Tiruchengode, India. asokansharath@yahoo.com
authors: Sharath
authors: S
authors: Asokan
authors: C
authors: C
authors: Sooriaprakas
authors: V
authors: V
authors: Raghu
authors: R
authors: R
authors: Bairavi
mesh_terms: D000704:Analysis of Variance; D002126:Calcium Hydroxide; D002648:Child; D003786:Dental Pulp Cavity / Q000000981:diagnostic imaging; D006801:Humans; D066298:In Vitro Techniques; D008963:Molar / Q000000981:diagnostic imaging* / Q000601:surgery*; D011897:Random Allocation; D012387:Root Canal Filling Materials / Q000627:therapeutic use*; D012389:Root Canal Obturation / Q000379:methods*; D012827:Silicone Oils; D012828:Silicones; D036542:Tomography, Spiral Computed; D014094:Tooth, Deciduous / Q000000981:diagnostic imaging* / Q000601:surgery*; D015035:Zinc Oxide-Eugenol Cement
chemical_list: C498115:Metapex; D012387:Root Canal Filling Materials; D012827:Silicone Oils; D012828:Silicones; D015035:Zinc Oxide-Eugenol Cement; C029584:calcium hydroxide, iodoform, silicone oil drug combination; D002126:Calcium Hydroxide