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		International Journal of Oral Biology :: Vol.46 No.4 pp.168-175 DOI:https://doi.org/10.11620/IJOB.2021.46.4.168 Open abstract    
International Journal of Oral Biology :: Vol.46 No.4 pp.168-175
			DOI:https://doi.org/10.11620/IJOB.2021.46.4.168
			 
			