This document discusses dental implants and overdentures. It defines overdentures as replacement teeth retained by dental implants that were developed to help edentulous patients regain quality of life. There are three main types of overdentures - implant-retained gum supported, bar-retained implant supported, and fixed implant supported. Overdentures have benefits like promoting better digestion by allowing more thorough chewing, preventing bone resorption by stimulating the jaw, and providing a more secure and stable fit compared to adhesive-retained dentures.

1. Cayapa Mel A.
Daguio Meekhole M.
Gayho Annie A.
Marcelo Arbielyn G.
Pobletin Francis Nikko Yves P.

2.  Implant
o to put (something) in a specified place
o to place (something) in a persons body by means of surgery
 Abutment
o a connecting element
o in implants (used to attach a crown, bridge, or removable denture
to the dental implant fixture). The implant fixture is the screw-like
component that is osseointegrated.

3.  A prosthetic device or alloplastic material implanted
into the oral tissue beneath the mucosal or/and
periosteal layer and/ or in the bone to provide
retention and support for the fixed and removable
prosthesis.
 a "root" device, usually made of titanium, used in
dentistry to support restorations that resemble a tooth
or group of teeth to replace missing teeth.
 Dental implants are small titanium anchors that are
permanently placed into your upper and/or lower jaw
bone.

4.  AD 600 HONDURAS Inca indian carved
bamboo stakes and implanted into jaw.
 In AD 600 Mayan population implanted
fragments of mandible to replicate 3 lower
incisors.
 Albucasis de Condue (936-1013) attempted to
use ox tooth to replace missing teeth and this
treatment was the first documented placements
of implants.
 Pierre Fauchard and John Hunter (18th
century) transplanted the teeth of one human to
another.

5.  1809 Maggiolo fabricated gold roots that were
fixed to pivot teeth by means of spring.
 1887 Harris implanted a platinum post coated
with lead.
 1895 Bonwell used gold or irridium tubes
implanted into bone to restore a single tooth.
 1905 Scholl demonstrated porcelain corrugated
root implant.
 1913 Greenfield introduced a hollow basket
implant made from a meshwork of 24 gauge
iridium platinum wires soldered with 24 carat
gold.

6.  1937, Strock, Venable and Beach described a method of placing a
VITALLIUM SCREW to provide anchorage for replacement of missing
tooth.
 1947 Formiggini developed a single helix wire spiral implant made
from stainless steel.
 1948 Goldberg and Gershkoff reported insertion of first viable
subperiosteal implant.
 1963 Linkow designed and introduced the hollow basket design with
vents and screw threads.
 1952, Professor Brånemark developed a threaded implant design made
of pure titanium. Dr. Brånemark discovered that titanium apparently
bonded irreversibly to living bone tissue. More than thirty years later,
the non-removable teeth attached to these roots are still functioning
perfectly.

7.  Based on placement within
the tissue
o Epithelial
o Subperiosteal
oEndosteal
o Transosteal
Based on materials used
oMetallic
oNon metallic
Based on implant placement
oSingle stage
oTwo stage
Based on implant loading
oImmediate
oProgressing
odelayed

8.  Edentulous patient
 Partially edentulous patient with
history of difficulty in
wearingR.P.D.
 Patient requiring long span
F.P.D.treatment
 Patient who refuses wearing a
removable prosthesis
 Patient with severe changes in
C.D.bearing tissues
 Poor oral muscular coordination
Parafunctional habits that
compromise prosthesis stability
Unrealistic patient expectation for
complete denture
Hyperactive gag reflex
Patient psycologically against
removable prosthesis
Unfavourable number and location of
abutments
Single tooth loss, avoid preparation of
sound teeth

9.  Insufficient alveolar bone above the inferior alveolar canal and
Failure to precisely locate the IAN invites surgical insult by the
drills may cause paresthesia or dysesthesia of the gum, lip and chin
 Uncontrolled Type II diabetes is a significant relative
contraindication as healing following any type of surgical
procedure is delayed due to poor peripheral blood circulation
 Anatomic considerations include the volume and height of bone
available
 Implants are contraindicated for some patients who take
intravenous bisphosphonates. (such as Actonel, Fosamax and
Boniva) taken for certain forms of breast cancer and cause
osteoporosis which may put patients at a higher risk of developing
a delayed healing.

10.  Bruxism (tooth clenching or grinding) is another
consideration which may reduce the prognosis for
treatment. The forces generated during bruxism are
particularly detrimental to implants while bone is
healing.
 Postoperatively, after implants have been placed, there
are physical contraindications that prompt rapid action
by the implantology team. A.Excessive or severe pain
lasting more than three days is a warning sign, B.
excessive bleeding. C. Constant numbness of the gingiva ,
lip and chin— usually noticed after surgical anesthesia
wears off— is another warning sign

11. • Adjacent teeth do not require
splinted restoration
- less risk of caries
- less risk of endodontics
– Less risk of porcelain
fracture
- Less risk of uncemented
restoration
- Less fracture of tooth
• Psychological need of patient
• Improved hygiene conditions
- less decay risk
- less pontic overhang
• Decreased cold and contact
sensitivity
• Improved esthetics
• Maintains bone in site
• Decreases adjacent tooth loss

12.  Decreased performance of conventional
complete dentures
 Bite force is decreased from 200 psi to 50 psi
 Masticatory efficiency is decreased
 More drugs are required to treat
gastrointestinal disorders
 Food selection is limited
 Healthy food intake is decreased

13. • maintain bone
• restore and maintain occlusal
vertical dimension
• maintain facial esthetics (teeth
positioned for appearance versus
• decreasing denture movement )
• Improve phonetics
• Improve occlusion
•Improve / regain oral
proprioception
•Increase prosthesis success
•Maintains muscle of mastication
and facial expression
•Reduce size of prosthesis
•Improve stability and retention of
removable prosthesis
•More permanent replacement
•More psychological health

14.  is prescribed for people that have one,
multiple or all of their teeth missing. People
with multiple or all of their teeth missing
typically have complete or partial dentures;
this treatment option is called Overdentures.

15.  are replacement teeth retained by dental
implants. Overdentures were developed to help
both partial and fully edentulous patients
regain a quality of life, which most likely has
been missing since they lost their teeth.

16.  Implant- retained
gum supported
 Bar-Retained,
Implant Supported
 Fixed, Implant
Supported

17.  With this treatment, the overdenture rests
directly on your gums and is retained by
implants placed into your upper and/or
lower jaw. The overdenture, which is
removable, is secured to your implants
through retentive attachments
incorporated into the denture.

18.  A thin metal bar that follows the curve of your jaw is
attached to two to five implants that have been placed
in your jawbone. Clips or other types of attachments
are fitted to the bar, the denture or both. The denture
fits over the bar and is securely clipped into place by
the attachments.

19.  With this treatment, the overdenture and bar are a one-
piece framework secured using screws to implants
placed into your upper and/or lower jaw. The
overdenture is only removable by a dental clinician and
is the most like natural teeth due to not having flanges
and not resting on the gums.

20. PROMOTES BETTER DIGESTION:
 Poor fitting dentures are often held in by using
adhesives. Overdentures utilize dental implants, so they
are more stable than adhesives. Improved stability
allows you to chew food more thoroughly, helping your
stomach break down food more efficiently, and absorb
more nutrients.

21.  Whether your overdenture is retained by remaining
natural teeth or by dental implants, it will continue to
stimulate your jaw bone when you eat/chew. This
stimulation will slow or even stop the resorption
(shrinkage) process that is natural when teeth are
missing

22.  The natural process of resorption (shrinkage) that
occurs when you have an unhealthy or under-
stimulated jaw as a result of missing teeth can,
throughout time, cause the distance between your nose
and your chin to shrink. This shrinking can make your
face look “sunken-in” and prematurely aged.

23.  When your overdenture is retained with implants it fits
more securely than one held in with only adhesives.
This fit also increases the stability of the overdenture
reducing or even eliminating, unnecessary movement
during chewing and talking. This lessens the instances
of sores and embarrassing dislodgement.