@book{179898,
	author = {Raouf Rafick Raouf Rizkalla,  and Ashraf Emil Eskandar},
	title = {Assessment of peri-implant stress distribution in maxillary "All- on-4" prosthesis, fabricated on multi-unit angled abutments with  Zirconia framework versus those with titanium framework : },
	year = {2025.}
}