1 Ideal for ridge augmentation and grafting bony defects missing one or more walls. 2  Titanium frame may be trimmed and shaped to create additional space for bone growth.  Although primary closure is recommended for long healing periods, dense PTFE membrane is impervious to bacteria and can withstand exposure.
Definition of Household Income. Household income is defined as the total income of all members of a household ages 15 and older. Household members do not have to be related to each other. The level of household income is an important underwriting criteria for lenders, as it is an indicator of spending power and a basis for study by private institutions and government.
The Census reports average income for three different groups. 1  Income per person is the income for each person age 15 or older. It's more commonly known as income per capita. 2  Family income is average for a family of two or more related people living in a household. They can be related by birth, marriage, or adoption. Household income is the average income of all people living in a housing unit.