Chapter15

Topics: Dental implant, Implants, Dentures Pages: 20 (380 words) Published: April 21, 2015
Dental Implants

Implants - defined
Surgically inserted into bone
Used as “anchors” to support a prosthetic
Replace missing teeth in partially and/or
fully edentulous areas
May be single tooth or several teeth
prosthetic
Potential for ultimate stability for prosthetic
Relies on integration with natural
bone/tissues for retention and sustainability

Implants –

Basic Diagrams
Prosthetics

Implants

Implants –

Basic Diagrams

Relies on integration
with bone (new bone
growth) for support.
“Osseointegratio
n”
There must be a
closed interface
(implant to oral
tissue) for success.

Types of Implants:
Endosseous – resides partially in
bone





Single tooth replacement thru denture
support
Screw-shaped
Most common type

Types of Implants:

Types of Implants:
Subperiosteal: rests on alveolar
ridge, no bone invasion



Less invasive, less stable
Supports denture

Transosteal: placed through the
mandible (only)



Attachments reside above ridge
Rarely used

Types of Implants:

Types of Implants:

Implant Materials:
Titanium:





Used as almost pure metal
Corrosion resistant
Strong & lightweight
Great biocompatibility

Implant Materials:
Ceramics:




Most biocompatible
Formation of hydroxyapatite at surface
Potential for chemical bond between
bone & implant

Coated Metals:


Combines strength of metal with good
interface potential of ceramic

Implant Materials:
Prosthetics & attachments:


Crowns
 PFM’s most common
 Could be gold, ceramic, composite
 Attached by screws or cemented



Dentures
 “Traditional” materials - acrylic
 Attached by various fasteners: clips,

balls, screws, etc.

Implant Materials:

Placement of Endosseous
Implant
Soft tissue “flap” is
laid
Premeasured
implant (body)
placed into bone
and covered entirely
with soft tissue
Healing: weeks months

Placement of Endosseous
Implant
The soft tissue is
removed, exposing
the implant, and a
“healing cap” is
placed
Healing: several
weeks

Placement of Endosseous
Implant
Healing cap is
removed and an
abutment is placed
Abutment is
prepared
(“post”/cylinder
added) & impressed
for prosthetic
Sent to lab for
fabrication

Abutmen
Implant t

Placement of Endosseous
Implant
Crown (or other
prosthetic) is
seated with
cement or screw
(or other
fastener)

Procedure: Diagrams

Patient Selection:
Highly motivated, healthy patient






Time-consuming procedure (months
of healing post-sx)
No systemic diseases or conditions
that impact healing & sustainability of
implant
Substantial bone support

Must be able to practice good OH

Maintenance of Implants:
Great OH by patient:


Toothbrushes, floss, interdental aids, etc.

Caution during prophylaxis:





Scaling with conventional instruments
may damage the titanium surface
Sonic instruments are contraindicated!
Use a very mild abrasive with rubber-cup
prophy

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