PMID- 25684911
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20150216
LR  - 20200930
IS  - 0976-237X (Print)
IS  - 0976-2361 (Electronic)
IS  - 0976-2361 (Linking)
VI  - 6
IP  - 1
DP  - 2015 Jan-Mar
TI  - Estimation of changes in nickel and chromium content in nickel-titanium and 
      stainless steel orthodontic wires used during orthodontic treatment: An 
      analytical and scanning electron microscopic study.
PG  - 44-50
LID - 10.4103/0976-237X.149291 [doi]
AB  - INTRODUCTION: The biocompatibility of orthodontic dental alloys has been 
      investigated over the past 20 years, but the results have been inconclusive. The 
      study compares standard 3 M Unitek nickel-titanium (NiTi) and stainless steel 
      archwires with locally available JJ orthodontics wires. Scanning electron 
      microscope (SEM) study of surface changes and complexometric titration to study 
      compositional change was performed. MATERIALS AND METHODS: Ten archwires each of 
      group 1-3 M 0.016" NiTi, group 2-JJ 0.016" NiTi, group 3-3 M 0.019" *0.025" SS 
      and group 4-JJ SS contributed a 10 mm piece of wire for analysis prior to 
      insertion in the patient and 6 weeks post insertion. SEM images were recorded at 
      x2000, x4000 and x6000 magnification. The same samples were subjected to 
      complexiometric titration using ethylenediaminetetraacetic acid to gauge the 
      actual change in the composition. OBSERVATIONS AND RESULTS: The SEM images of all 
      the archwires showed marked changes with deep scratches and grooves and dark 
      pitting corrosion areas post intraoral use. 3M wires showed an uniform 
      criss-cross pattern in as received wires indicating a coating which was absent 
      after intraoral use. There was a significant release of Nickel and Chromium from 
      both group 3 and 4. Group 2 wires released ions significantly more than group 1 
      (P = 0.0). CONCLUSION: Extensive and stringent trials are required before 
      certifying any product to be used in Orthodontics.
FAU - Kararia, Vandana
AU  - Kararia V
AD  - Department of Orthodontics, Government Dental College and Hospital, Jaipur, 
      Rajasthan, India.
FAU - Jain, Pradeep
AU  - Jain P
AD  - Department of Orthodontics, Government Dental College and Hospital, Jaipur, 
      Rajasthan, India.
FAU - Chaudhary, Seema
AU  - Chaudhary S
AD  - Department of Orthodontics, Government Dental College and Hospital, Jaipur, 
      Rajasthan, India.
FAU - Kararia, Nitin
AU  - Kararia N
AD  - Department of Conservative Dentistry and Endodontics, Rajasthan Dental College 
      and Hospital, Jaipur, Rajasthan, India.
LA  - eng
PT  - Journal Article
PL  - India
TA  - Contemp Clin Dent
JT  - Contemporary clinical dentistry
JID - 101552967
PMC - PMC4319344
OTO - NOTNLM
OT  - Biocompatibility
OT  - complexometric titration
OT  - nickel titanium
OT  - stainless steel
COIS- Conflict of Interest: None declared.
EDAT- 2015/02/17 06:00
MHDA- 2015/02/17 06:01
PMCR- 2015/01/01
CRDT- 2015/02/17 06:00
PHST- 2015/02/17 06:00 [entrez]
PHST- 2015/02/17 06:00 [pubmed]
PHST- 2015/02/17 06:01 [medline]
PHST- 2015/01/01 00:00 [pmc-release]
AID - CCD-6-44 [pii]
AID - 10.4103/0976-237X.149291 [doi]
PST - ppublish
SO  - Contemp Clin Dent. 2015 Jan-Mar;6(1):44-50. doi: 10.4103/0976-237X.149291.