This document presents a methodology for integrating CAD, CAE, and RP technologies to develop customized medical implants. The methodology involves acquiring imaging data from a patient's mandible using CBCT scanning. The images are processed to build a 3D model, which is used to design a customized implant through CAD software and FEA analysis. Virtual surgery is then simulated to plan the implantation. The designed implant and surgical plan are validated through RP production of a physical medical model. The case study applies this methodology to design an implant for a patient who suffered a broken mandible in an accident. Results showed that the integrated RE/CAD/RP approach helped the surgeon design a patient-specific implant and accurately plan the surgery, improving surgical outcomes.

1. and
By
Title
Dr. Amjad Barzan
Integration of CAD/CAE/RP
Environment for Developing new
Product in Medical Field
Nabeel Ismail Alawy

2. Wha
t
Is RE?
In Production Engineering, the
term Reverse Engineering ( RE ) is
used to summarize the process of
reconstructing an already existing
object.

3. Wha
t
Is AM?
Additive Manufacturing also is known
as RP technologies is a group of
techniques used to quickly fabricate a
scale model of a physical part or
assembly using 3D (CAD) data.

4. 1
Stereolithography
(SLA)
2
Fused Deposition
Modeling (FDM)
3
Selective Laser
Sintering (SLS)
RP
One of the most popular
and widespread
techniques in the world of
AM
A type of AM technology that
the fabricating thermoplastic
for 3D objects.
An AM method that uses a
powder bed fusion process to
build 3D parts. This AM
technology can be used both for
RP and production.
Common RP Techniques Used in the Medical Field are

5. 1 2 3
RP techniques

6. Problem Statement
Wh
at
Problem
Statement
Medical applications are facing great challenges concerning
replacements of bones, organs, and tissues that are not readily
available for surgery. Although RP is used in this field, existing
researches did not provide a clear understanding of the
integration environment between the RE /CAD system and RP.
Another challenge facing surgeons is the reconstruction of the
mandible to improve the outward appearance of the patient.

7. Ai
m Of
Thesis?
present a proposed new methodology for
integrating the design and manufacturing
environment of medical models by using the
CAD system and RP techniques and their
implementation in mandible surgery.
developing an integrated environment
among imaging, design and manufacturing
techniques for diagnosis and medical
treatment.
Designing the reconstruction of the mandible
and restore the patient's functional
performance.

8. Literature Survey (LS)
Two
Types of
Researchers
RE Image Processing and 3D
Modeling of mandible
reconstruction
3D mandible
reconstruction design
analysis simulation and RP

9. Literature Survey (LS)
1
Esfandyar
Kouhi et al.
2008
Present a methodology
for the design and
fabrication procedure of
medical models using
(CAD) and (FDM)
technique for application
in the mandibular
reconstructive surgery.
2
Li-bin Zhou et
al. 2010
3
Emad Abouel
Nasr et al.
2014
4
Jardini, A.L et
al. 2015
To improve the reconstructive
surgical outcome of a
mandibular defect, we used
(RE), (CAD), and (RP)
technique to fabricate
customized mandibular trays
to precisely restore the
mandibular defects.
Progress in medical imaging,
CAD, and RP techniques
have helped to design and
manufacture models for
anatomical structures and
patient implant fabrication
using the technique (EBM).
Using CT data based on
the CAD system and the
use of AM technologies
The patient's implant
was designed and
fabrication

10. The Proposed Methodology
Methodology Stages
Acquisition Data
Image processing
Implant design and
FEA
Virtual surgery and
implantation
RP medical model
production

11. 01
Image
acquisitio
n
(CBCT)
02
Image
Processing
03
Customize
d
Implant
Design
04
FEA
05
Implantatio
n
STL
06
Virtual
Surgery
(simulation
)
07
RP
Technolog
y
Work
Implantation

12. Case Study
According to the agreements and protocols
between universities teaching hospitals, choose
the case study in the medical city in Baghdad. In
Martyr Ghazi Hariri Hospital/ Oral and
Maxillofacial Surgery Department/Radiology Unit
and 3D Printer. Conducted survey CBCT to assess
the integrity of the skull and other tissues of the
patient. Sample research a 35-year-old man. He
had a traffic accident that broke his mandible and
lost some teeth.

13. Data Acquisition
Wh
at Is
CBCT?
CBCT an innovative medical imaging
technique that provides dentistry with
3D views of the patient.

14. Image Processing (Building a 3D model )
Wh
at Image
Processing
Use of a manual threshold technique
in building the 3D model Which
ranges from (355.4--2677.3) HU.

15. Customized implant design and FEA
Wh
at Implant
Design
This tool has 3D design possibilities as well
as the FEA analysis process, which is one of
the most important features in the design
process of an implant.
FEAFlex(B-spline) Technique

16. Virtual surgery and implantation
Wh
atVirtual surgery
&
Implantation
R1
Importing the STL Edit model surface Mesh model &Virtual surgery
Showing the design of the implant that is built using RE.
Appropriate modifications are also made and the design implant
is performed in a virtual computing environment as described in
the following steps.

17. RP Medical Model Production
Ste
ps
R
P
Orientation&
Slicing
Building a Part

18. O
1
The result shows a physical model of mandible
produced during the current study has proved
that the integration of RE/CAD/RP can be used
successfully.
O
2
It gives a clear vision that helps the surgeon to
perform a complete surgery without having to
print a physical model of the anatomical model
O
3
The current approach assisted us to design
implant customized to the patient to
improve patient outcomes based upon the
analysis of patient structural data.
Results

20. Designing model
The proposed methodology
shows the possibility of
designing a compensative model
and Procedure virtual surgery
by investing in engineering
programs.
(CBCT ) Technique
The research explains that
the CBCT scan is one of the
best methods of bone scanning
because of the accuracy of the
images derived from it and
the lack of radiation
Virtual Surgery
The virtual computer
environment that simulates
clinical reality produces the
successful anatomy of
reconstructive surgery for the
implementation of surgical
work.
Programs
The quality of these programs
allows the surgeon to have a
wider view of the position in
the surgical area, allowing him
to plan before surgery
Conclusions

24. Thanks for
Attention