buildup

build +‎ up, from the verb phrase.

buildup (countable and uncountable, plural buildups)

1. An accumulation; an increase; a gradual development.

   Snow buildup on roads makes for hazardous driving.

   There was a buildup of pressure in the boiler.

2. (dentistry) The construction of a composite core to repair a damaged tooth.
   • 2017, Jose-Luis Ruiz, Supra-Gingival Minimally Invasive Dentistry (page 103)

     Blocking undercuts out with bonded flowable composite is an option, but the time involved doing a buildup, plus the additional complication to provisionalize, make this option less desirable (Figure 6.19e).

• teardown

• upbuild