IMPACTION:
Partial or completely unexposed tooth that is wedged against another tooth, bone, or soft tissue, precluding the eruption process.

IMPLANT:
Artificial device replacing tooth root; may anchor an artificial tooth, bridge, or denture.

IMPRESSION:
Mold made of the teeth and soft tissues.

INCISION AND DRAINAGE:
Surgical incision of an abscess to drain suppuration (pus).

INCISORS:
Four upper and four lower front teeth, excluding the cuspids (canine teeth).

INFILTRATION:
Local anesthetic procedure effective for upper teeth and soft tissue; placement of anesthetic under the gum, allowing it to seep into bone.

INLAY:
Indirect - filling made by a dental laboratory that is cemented or bonded into place, direct - placement of dental composite resin restoration at chairside.

INTERPROXIMAL:
Surfaces of adjoining teeth.

INTEROCCLUSAL:
Space between upper and lower teeth.

INTRAORAL CAMERA:
A small video camera used to view and magnify oral conditions; images may be printed.

JACKET:
Crown for a front tooth, usually made of porcelain.

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