Dentures	Single Tooth Implant	All-on-4 ® Implant Bridges	Prettau Implant Bridges
Appearance	When in place can look natural	Look like natural teeth	Look like natural teeth	Look like natural teeth
Function	Reduced bite force	Function like natural teeth	Function like natural teeth	Function like natural teeth
Comfort	Gum irritation common	Feels like natural tooth	Feels like natural teeth	Feels like natural teeth
Number of Implants	None	1	4	6-8
Bone Loss	May accelerate bone loss	Prevents bone loss	Prevents some bone loss	Prevents more bone loss
Restoration Materials	Acrylic base, sometimes with ceramic teeth	Typical dental crown: lithium disilicate or zirconia	Acrylic or zirconia	Full zirconia
Durability	May warp when dry or under hot water. Can break when dropped. Wears down under normal conditions.	Very sturdy: can withstand all normal bite force	Acrylic is like dentures, zirconia is strong enough for all normal bite force	Can withstand all normal bite force
Longevity	Adjustment needed in less than a year, may last 8 years	Can last a lifetime–crown may last 10-20 years	Proven durability up to 10 years	Expected durability beyond 10 years
Procedure Complete in	1 day	1 day	1 day	1 day
Healing Time	Up to six months for new dentures, none for replacements	Up to six months	Up to six months	Up to six months