LEARN TO CHARACTERIZE IMPLANTS

CORONAL

ABUTMENT INTERFACE

external

External connections, radiographically, appear as a protrusion at the shoulder of the implant. You might also notice that the internal threads begin more coronally.

internal

The internal connection is flat at the shoulder of the implant. you will see a thin wall surrounding the coronal portion of the implant. Threads often start more apically.

FLANGE

wider

The flange is wider than the implant body. There is an abrupt transition from the body to the flange.

straight

The flange is the same width as the implant body, with a straight transition between the two.

COLLAR

apical chamber

This is where the implant shoulder angles inward toward the abutment interface.

MID-BODY

IMPLANT TAPER

tapered

The implant body is wider at the coronal portion and narrower at the apex.

non-tapered

The width of the implant is the same at the coronal portion and the apex.

IMPLANT THREADS

threaded

The implant body has threads somewhere along it’s body, often along the entire length of its body.

THREAD TYPE

v-shaped threads

The threads are pointed with both lengths being equal (as opposed to reverse buttress threads).

square threads

The threads are not pointed, but square in profile.

MIDBODY GROOVES

midbody grooves

Grooves can be horizontal or vertical. Vertical grooves on the
midbody can be difficult to see radiographically (would appear as
vertical radiolucent lines).

APICAL

APEX SHAPE

v-shaped apex

The apex has two flat sides forming a point, whether it is pointed or blunted.

flat apex

The apex is flat when viewed in profile.

OPEN APEX

open apex

An open apex refers to a hole through the underside of the implant. Radiographically, it appears as a more radiolucent band that
touches the apex.

 

ROUND HOLE

round hole

Holes appear in various ways radiographically, they can appear as radiolucent circles when the radiograph is taken perpendicular to the circle or as a radiolucent band if taken parellel to it.

oblong hole

Same radiographic characteristics as the round hole, but oblong instead of a circle.

APICAL CHAMBER

apical chamber

Refers to there being space inside the implant (hollow space).
Seen radiographically as radiolucent areas. these chambers are
connected to holes.

APICAL GROOVES

apical grooves

These appear as radiolucencies at the apex (like the image shown to the left). The implant may have 2-4 or more grooves (number of grooves are not apparent radiographically).

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