RE: [rp-ml] Ceramic structures using RP

Hi Jim,
 
It could depend on how far you are prepared to extend your definition of RP.
There are a variety of systems currently in use within dentistry to allow
forming of ceramic components for dental restorations. These tend to
utilise more of a CAD/CAM approach than strict RP and in my view the two are
very separate beasts (although this can be debated from various angles).
 
CAD/CAM systems you could investigate include:
 
Cerec - http://www.cereconline.com/ <http://www.cereconline.com/>
Everest -
http://www.kavo.com/En/produkte/zahntechnik/everest/everest.asp?navid=4300
<http://www.kavo.com/En/produkte/zahntechnik/everest/everest.asp?navid=4300&
lan=En> &lan=En
Procera -
http://qstream-down.qbrick.com/01406/esthetics_Procera_Bridge_Zirconia-Scann
er_procedures.pdf
<http://qstream-down.qbrick.com/01406/esthetics_Procera_Bridge_Zirconia-Scan
ner_procedures.pdf>
 
There are others including press-forming systems such as IPS Empress
(Ivoclar) and Finesse (Dentsply) and an electrophoretic deposition technique
(I think) called Wol-Ceram. As I said though, you may have to be prepared
to loosen/adjust your definition of RP a little if these or any of the above
are to fit in.
 
Hope that helps,
 
Jonathan.
 
********************************
Dr Jonathan Harris
Lecturer in Biomaterials
The University of Birmingham
School of Dentistry
St Chad's Queensway
Birmingham
B4 6NN
UK
  _____

From: Good, Jim [mailto:Jim.Good@tbe.com]
Sent: 03 December 2004 16:44
To: rp-ml@rapid.lpt.fi
Subject: [rp-ml] Ceramic structures using RP

Good morning,

I have a question. I just subscribed to this mail list so please be gentle!
I've been working on a comparative analysis of the RP processes (hasn't
everyone!?!) and I'm trying to determine which processes can provide a part
using ceramic materials. Can someone please give me a list of processes
that can be used with ceramic materials? I'd like to have some samples made
to test the typical characteristics such as dimensional accuracy, surface
finish, strength, etc. I will be testing all types of materials such as the
plastics, metals, ceramics, and so on. I just want to make sure I have
captured all the processes that can do ceramics.

Also, on a side note, I've been trying to get an .stl file from the
benchmark part used in the rapid prototype journal entry titled
"Benchmarking for comparative evaluation of RP systems and processes" by M.
Mahesh, Y.S. Wong, J.Y.H. Fuh, and H.T. Loh, found in Volume 10 Number 2
dated 2004, pp. 123-135. Does anyone have a copy of this model file they
can send to me? I'd appreciate any help you can provide.

I only have a cursory knowledge of RP processes but I'm trying to ramp up
fast. I'd appreciate any information that can be provided to me.

Thank you,

Jim Good

Muniz Engineering

In Situ Fabrication and Repair
Received on Mon Dec 06 10:17:24 2004