Implants and Anchorage / orthodontic courses by Indian dental academy
Post on 20-Apr-2017
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www.indiandentalacademy.com
INDIAN DENTAL ACADEMY
Leader in continuing dental education www.indiandentalacademy.com
IMPLANTS & ANCHORAGE
To preserve what is normal
To prevent the undesired movement
To get the desired movement
To keep it as intra oral as possible
THE BIGGEST CHALLENGE
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Innumerable attempts and innovations
Success very subjective
Dogmatic following
The latest in the inventorywww.indiandentalacademy.com
Versatility in providing anchorage
Helping in bringing about tooth movements which have been of a great challenge to the orthodontist like intrusion of upper and lower molars
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Being as intraoral as possible
Less invasive though it is a surgical procedure
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Pre-Christian era - Artificial materials
~1945, Vitallium screws
~1970, Linkow-Endosseous blade implants Carbon implants (Osseointegration ?)
~1975, Kawahara et al Bioglass coated ceramic implants
~1977, Branemark et al-Osseointegration Hydroxy apatite
crystalswww.indiandentalacademy.com
~1983, Creekmore possibility of skeletal anchorage
~1989, Roberts – titanium implants
~1991, Higuchi & James – Titanium fixtures
~1998, Costa et al – Miniscrews
~1999, Umemori et al – SAS for open bite
~2003, Giuliano Maino
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SPECIFICITY
~Maximum load >< quantity of
Osseointegration dependent on surface area
& tissue contact
TIME OF LOADING
~4-6 months after fixation
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THE DIMENSIONS OF THE IMPLANT SHOULD BE CONGRUENT WITH THE AMOUNT OF BONE AVAILABLE AT THE POINT OF INSERTION
~3-4mm in diameter
~6-10mm in length
~Length >< 1/ Diameter
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ANATOMICAL SITES
Mandibular body- intrusion
Retromolar pad- distal movement
Key ridge- distalization
Anterior ridge of piriform opening- intrusion
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SURGERY & HEALING TIME
Local anesthesia
Elevate mucoperiosteal flap
Bone exposed
Plates fixed
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MECHANICS
A rectangular archwire to conserve torque
Elastic thread (3-4 weeks)
Steel ligatures
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