title: K-file vs ProFiles in cleaning capacity and instrumentation time in primary molar root canals: an in vitro study.
abstract: OBJECTIVE
  This study compares the efficiency of manual K-files and rotary ProFiles in cleaning capacity and instrumentation time in primary molar root canals.
  
  
  METHODS
  Seventy-five maxillary and mandibular primary molar root canals were instrumented with ProFiles and K-files in the step-back manner from size #10 to #40. The teeth were decalcified, dehydrated and cleared, and analyzed for the presence of dye remaining on the root canal walls, which served as an evidence of cleaning capacity of both the techniques.
  
  
  RESULTS
  The results showed a significant difference in the cleaning capacity of the root canals with ProFiles and K-files, in apical and coronal thirds of the root canal. ProFiles have been found to be more efficient in cleaning the coronal thirds and K-files in cleaning apical thirds of the root canals. Both the techniques were almost equally effective in cleaning the middle thirds of the canals. The time taken during the cleaning of the root canals appeared to be statistically shorter with K-files than profiles.
authors.affiliation: Department of Pedodontics and Preventive Dentistry, KLES's Institute of Dental Sciences, Belgaum - 590 010, Karnataka, India. Planetrathnam@yahoo.com
authors.forename: N
authors.initials: N
authors.lastname: Madan
authors.forename: A
authors.initials: A
authors.lastname: Rathnam
authors.forename: A L
authors.initials: AL
authors.lastname: Shigli
authors.forename: K R
authors.initials: KR
authors.lastname: Indushekar
mesh_terms: D004396:Coloring Agents; D003648:Decalcification Technique; D003722:Dental Alloys; D003786:Dental Pulp Cavity / Q000473:pathology*; D003890:Desiccation; D006801:Humans; D008422:Materials Testing; D008963:Molar / Q000473:pathology*; D009532:Nickel; D012388:Root Canal Irrigants / Q000627:therapeutic use; D018915:Root Canal Preparation / Q000295:instrumentation* / Q000592:standards; D012399:Rotation; D012973:Sodium Hypochlorite / Q000627:therapeutic use; D013997:Time Factors; D014025:Titanium; D019227:Tooth Apex / Q000473:pathology; D014094:Tooth, Deciduous / Q000473:pathology*
chemical_list: D004396:Coloring Agents; D003722:Dental Alloys; D012388:Root Canal Irrigants; C040654:titanium nickelide; D009532:Nickel; D014025:Titanium; D012973:Sodium Hypochlorite