@article {128872,
	title = {Prosthodontic  maintenance  of overdentures  on zirconia implants: 1-year results of a randomized controlled trial.},
	journal = {The International Journal of Prosthodontics},
	volume = {27},
	year = {2014},
	pages = {461-468},
	author = {Reham B.Osman and Warwick Duncan and Michael V. Swain and Sunyoung Ma,}
}
