PMID- 31940083
OWN - NLM
STAT- MEDLINE
DCOM- 20200930
LR  - 20200930
IS  - 1432-0614 (Electronic)
IS  - 0175-7598 (Linking)
VI  - 104
IP  - 5
DP  - 2020 Mar
TI  - Microbially induced calcium carbonate precipitation to design a new type of bio 
      self-healing dental composite.
PG  - 2029-2037
LID - 10.1007/s00253-019-10345-9 [doi]
AB  - Crack propagation is one of the issues associating with dental composites which 
      can significantly affect their performance. Current solutions for preventing and 
      stopping the cracks include maximizing the filler to matrix ratio as well as 
      fiber reinforcing of composites which are not always reliable. The precipitation 
      of calcium carbonate (CaCO(3)) minerals by the generally recognized as safe 
      (GRAS) bacteria can be seen as a novel approach to address this shortcoming. In 
      the present study, the effect of microbially induced calcium carbonate 
      precipitation (MICP) on filling dental composites' cracks and cavities was 
      studied. In this first step, the capability of different GRAS bacteria to induce 
      CaCO(3) precipitation was investigated. In the next step, the capability of 
      potent bacteria to initiate MCIP in solid matrix was evaluated. For this purpose, 
      the CaCO(3)-bacteria along with necessary nutrients were introduced into 
      different dental composites in two ways, namely, powder and paste form. The 
      light-cured composites were analyzed using optical microscopy, scanning electron 
      microscopy (SEM), and energy-dispersive X-ray (EDS) to identify and characterize 
      the precipitated CaCO3 crystals. It was shown that the incorporation of powder 
      healing compound in two composites resulted in precipitation of CaCO(3), while no 
      crystals were formed when a paste form of healing compound was mixed with 
      composites. The results evidently show that MICP can be a feasible alternative to 
      current inefficient approaches to address microcracking issues in dental 
      composites.
FAU - Seifan, Mostafa
AU  - Seifan M
AD  - School of Engineering, Faculty of Science and Engineering, The University of 
      Waikato, Hamilton, New Zealand.
FAU - Sarabadani, Zahra
AU  - Sarabadani Z
AD  - School of Engineering, Faculty of Science and Engineering, The University of 
      Waikato, Hamilton, New Zealand.
FAU - Berenjian, Aydin
AU  - Berenjian A
AUID- ORCID: 0000-0003-4957-3582
AD  - School of Engineering, Faculty of Science and Engineering, The University of 
      Waikato, Hamilton, New Zealand. aydin.berenjian@waikato.ac.nz.
LA  - eng
PT  - Journal Article
DEP - 20200115
PL  - Germany
TA  - Appl Microbiol Biotechnol
JT  - Applied microbiology and biotechnology
JID - 8406612
RN  - 0 (Dental Materials)
RN  - H0G9379FGK (Calcium Carbonate)
SB  - IM
MH  - Bacteria/*metabolism
MH  - Calcium Carbonate/*chemistry/metabolism
MH  - Chemical Precipitation
MH  - Dental Materials/*chemistry/metabolism
OTO - NOTNLM
OT  - Bacteria
OT  - Biomineralization
OT  - Calcium carbonate
OT  - Crack
OT  - Dental composite
OT  - Self-healing
EDAT- 2020/01/16 06:00
MHDA- 2020/10/02 06:00
CRDT- 2020/01/16 06:00
PHST- 2019/11/13 00:00 [received]
PHST- 2019/12/28 00:00 [accepted]
PHST- 2019/12/19 00:00 [revised]
PHST- 2020/01/16 06:00 [pubmed]
PHST- 2020/10/02 06:00 [medline]
PHST- 2020/01/16 06:00 [entrez]
AID - 10.1007/s00253-019-10345-9 [pii]
AID - 10.1007/s00253-019-10345-9 [doi]
PST - ppublish
SO  - Appl Microbiol Biotechnol. 2020 Mar;104(5):2029-2037. doi: 
      10.1007/s00253-019-10345-9. Epub 2020 Jan 15.