Journal of Conservative Dentistry
Home About us Editorial Board Instructions Submission Subscribe Advertise Contact e-Alerts Login 
Users Online: 185
Print this page  Email this page Bookmark this page Small font sizeDefault font sizeIncrease font size
Year : 2014  |  Volume : 17  |  Issue : 6  |  Page : 526-530

In vitro investigations into the etiology of mineral trioxide tooth staining

1 Department of Research and Development, Dentsply Tulsa Dental Specialties, Tulsa, Oklahoma, USA
2 Department of Restorative Sciences/Endodontics, Texas A&M University Baylor College of Dentistry, Dallas, Texas, USA

Correspondence Address:
Todd Berger
Department of Research and Development, Dentsply Tulsa Dental Specialties, Tulsa, Oklahoma
Login to access the Email id

Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0972-0707.144584

Rights and Permissions

Aim: To investigate the role of bismuth oxide, a constituent of contemporary mineral trioxide aggregate (MTA) materials, and its response to various solutions that may contribute to the potential discoloration that occurs following MTA applications within the scope of endodontics. Setting and Design: Laboratory assessment of chemical reactions with white ProRoot® MTA and white Portland cement (WPC). Materials and Methods: Set specimens and freshly mixed specimens of white ProRoot® MTA and white ProRoot® MTA powder, along with specimens of WPC were exposed to distilled water, phosphate buffered saline (PBS), 10% formalin, hydroxyethylmethacrylate (HEMA), sodium hypochlorite, sodium hydroxide (NaOH) base, and hydrochloric acid (HCl) acid. Specimens were visually inspected periodically for color changes. Results: All forms of ProRoot MTA showed discoloration when exposed to 10% formalin within 30 min, as opposed to WPC, and were completely blackened at 4 days. Bismuth oxide alone and with calcium oxide also turned black within 30 min after exposure to 10% formalin. No discoloration was seen when exposed to the other solutions. Conclusions: Exposing MTA in various forms to a variety of liquids has determined that bismuth oxidein combination with other chemical moieties is the prime cause of staining observed by clinicians.

Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)

 Article Access Statistics
    PDF Downloaded212    
    Comments [Add]    
    Cited by others 11    

Recommend this journal