DMLS (Direct Metal Laser Sintering) is one of the most advanced technologies available for manufacturing PFM crowns and bridges.
This system uses Computer Aided Design (CAD) data to fabricate the desired frame by selectively sintering the alloy powder layer by layer. This machine uses special based alloy, which is highly bio-compatible. It offers a high tensile strength of 1350mpa and has an excellent bonding strength.
Dental technology is undergoing advancements at a fast pace and technology is being imported from various other fields. One such imported technology is direct metal laser sintering technology for casting metal crowns.
Laser sintering is the newest technology in metal manufacturing. DMLS is a manufacturing process for producing complex 3D components directly from 3D CAD data without using any machining.
Instead of casting molten metal into a mould, DMLS uses a high-powered laser to fuse extremely fine layers of cobalt-chromium alloy powder, creating a highly accurate three-dimensional metal framework directly from a digital design.
Laser sintering is also referred to as “3D printing” because it builds up framework in a series of successively thin layers. A high powered laser beam is focused onto a bed of powdered metal and these areas fuse into a thin solid layer. Another layer of powder is then laid down and the next slice of the framework is produced and fused with the first. When all the layers have been built up, the solid copings and bridge frameworks are taken from the machine, sand blasted, polished, inspected and ultrasonically cleaned.
This additive manufacturing process eliminates many of the limitations associated with traditional casting techniques.
DLMS requires three inputs: material, energy and CAD model.
The material used is powder-based working material. DMLS crowns have a primary composition of chrome cobalt alloy, molybdenum, tungsten, silicon, cerium, manganese and carbon are the other ingredients used. They are nickel and beryllium free. The material is a mix of particles of the size of 3–14 μm.
Energy used is a high powered laser beam (200 W Ytterbium fiber optic laser). This energy is used to melt the alloy powder.
CAD model is the machine reads in data from a CAD drawing and lays down successive layers of alloy powder and in this way builds up the model from a series of cross sections. These layers, correspond to the virtual cross section from the CAD model and are joined together to create the final shape.
Advantages of DLMS Crown And Bridge
DMLS crowns and bridges are made of a particle size of 3–14 μm. This combined with very fine point laser (0.1 mm) results in a density of 99.9 %, resulting in stronger copings. The densely sintered crowns have practically no voids. The process results in highly accurate, well detailed restorations. Marginal fitting is excellent with the restoration possessing consistent quality and strength. DLMS is a clean alternative to casting.
Coping thickness, pontic design and cement thickness can all be standardized with this method.
Laser sintering is a computer-controlled, precise process that ensures consistent work quality. The possibilities of inclusions or defects that are commonly introduced in the manual casting methods are dispensed with. Multiple unit frameworks usually suffers from distortion in the conventional technique, DMLS is more predictable with improved marginal fit.
Because of these advantages, Dr. Bharat Katarmal Dental & Implant Clinic, Jamnagar has discontinued conventional cast PFM crowns and routinely recommends DMLS-manufactured PFM restorations for patients seeking greater accuracy, reliability, and longevity.
Click here to know about all FAQ about Dental Crown
Click here to know everything about Dental Crown
What is crown? | When Is a Dental Crown Needed? | Signs You May Need a Dental Crown | Benefits of Dental Crowns | Types of Dental Crowns like E-max, Zirconia, DMLS PFM, DMLS full metal, Real 18 Karat Gold crown | Which Dental Crown Is Best? | Comparison of Different Dental Crown Materials | How to Care for Your Dental Crown | How Is a Dental Crown Procedure Performed? | Science-Backed References | Why Choose Dr. Bharat Katarmal Dental and Implant Clinic for Dental Crowns in Jamnagar? | What Is the Cost of a Dental Crown?
Click here to know everything about dental bridge
What is dental bridge? | Science Behind Dental Bridges | Benefits of Dental Bridge | Who Is a Good Candidate for a Dental Bridge? | When Is a Dental Bridge Needed? | Symptoms That Missing Teeth Should Be Replaced | Why Early Tooth Replacement Matters | Types of Dental Bridge like Zirconia, DMLS PFM, DMLS full metal, Real 18 Karat Gold bridge | Our Digital Workflow for Dental Bridges | Step-by-Step Dental Bridge Procedure | Why Choose Dr. Bharat Katarmal Dental and Implant Clinic for Dental Bridge in Jamnagar? | What Is the Cost of a Dental Bridge? | Dental Bridge vs Dental Implant | Dental Bridge vs Removable Partial Denture | How to Care for Your Dental Bridge
