Three Dimensional Shape Optimum Design ofImplant for Dentistry by Multilevel Response
Shapes of Commercial Implant
Implant and Mandible Model , Load and Boundary Condition
Mesh Study
What is Implant
Implant
CancellousBone
Cortical Bone
Artificial Teeth
Mucoperisteum
Implant
CancellousBone
Cortical Bone
Artificial Teeth
Mucoperisteum
BRANEMARK ANKYLOS BIOHORIZONS ITI
(a)BRANEMARK (b) ANKYLOS (c)BIOHORIZONS (d)ITI (e)ASTRA
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Classical Optimization Method :
Gradient Based Optimization Problem (SQP, SLP, etc)
Large number of design variables : Inefficient, Local Minimum
->> Cost Increase
General Optimization Problem
Multilevel Optimization
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21213
4
4.5
5
5.5
6
6.5
7
7.5
8
10000 15000 20000 25000 30000 35000 40000
at C
ance
llous
e Bo
ne
4
4.5
5
5.5
6
6.5
7
7.5
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10000 15000 20000 25000 30000 35000 40000Number of nodes
Max.
von-
Mise
s str
ess
(Mpa
)
Stress at Cancellous Bone
Convergence
StressMisesvonMaxXF .)(
• von-Mises St. at Cort. Bone = 380MPa • von-Mises St. at Canc. Bone = 20MPa- Typical Characteristics of Implant
임플란트 몸통부 : 직선 임플란트 하단부 : Spline 임플란트 길이 : 최대 13mm 임플란트 상단 : 최대 2.5mm
나사산의 높이 나사골의 깊이 나사산의 폭 나사골의 폭 나사의 피치
나사산의 높이 나사의 피치
Result of Optimum at Cancelouse Bone
Result of Optimum at Cortical Bone
Stress at Can. Bone
Stress at Cor.Bone
Stress at Cor. Bone
Stress at Can.Bone
Initial Value 15.65 379.81 379.81 15.65Basic Shape 13.74 371.01 363.32 13.78
Create screw at can 13.62 393.19 338.15 17.39Create screw at cor 13.09 246.86 220.84 15.29
Conclusion