Optical impressions/ dentistry jobs

OPTICAL IMPRESSIONS

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INDIAN DENTAL ACADEMY

Leader in continuing dental education www.indiandentalacademy.com

www.indiandentalacademy.com

A JOURNEY TO THE SUCCESSFUL PROSTHESIS STARTS WITH A PERFECT IMPRESSION

INTRODUCTION2


Definition

IMPRESSION : a negative likeness or copy in

reverse of the surface of an object; an imprint of the teeth and

adjacent structures for use in dentistry

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Problems faced with conventional impression making

Dentists face problem in daily life

Messy materials

Tedious and time taking

Tongue and saliva

Discomfort to patient

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Eliminating Steps at the Office

Disinfection

Setting of MaterialsTray Selection Dispensing Materials

Shipping

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Eliminating Steps at the Lab

Trimming

Die CuttingBase and Pin

Articulation

Pouring Plaster

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Types

1) intra oral

2) extra oral

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Intra oral advantages

It allows the dental care professional to take the data directly from the prepared tooth and there is no necessity of taking an impression and fabricating a cast

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Dis-advantages

Tongue and saliva may pose some problems

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Extra-oral advantages

An in-vitro study showed a higher accuracy of digitization with impression making and model fabrication than in case of the intraoral digitization

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cercon®eye12


cercon®eye13


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Contact scanner


Dis-advantages

1) A cast need to be fabricated so, impression making is must, how ever master cast fabrication is time consuming and error prone method.

2) shadowing effect limits use of extraoral digitization method

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Types of digitization

1) point and click systems

2) scanning

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Point and click systems

17 www.indiandentalacademy.com

18 www.indiandentalacademy.com

3D cerec

Scanning and designing

3 dimensional viewing Milling 19 www.indiandentalacademy.com

Limitations of CEREC system 1) its scanning technology- point and

click systems 2) its material options-

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Advantages

A single appointment is needed

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Lava Chairside Oral Scanner C.O.S.22


Advantages of chair side oral scanner It captures a thousands of 3D data sets

in few seconds It captures a motion picture This scanner quickly captures 3D data

and renders a 3D model instantaneously.

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A Clear Difference in Preparation

Powder1 Lava C.O.S. Method

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Accuracy

Quality

Communication

Comfort

AccessibilityProductivity

Potential Benefits for Dentists, Patients and Labs

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Digital Workflows: This is only the beginning…

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Dentist Laboratory 3M ESPE

Workflow for Traditional PFM

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Dentist Laboratory laboratory2


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Bite Registration and Digital Ditching

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Dentist Laboratory 1 Laboratory 2


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Workflow for LavaTM Zirconia35


CONCLUSION

These optical impressions are superior in technology and known for its accuracy, saves the patients and dentists time with a few laboratory procedures and patients comfort

but it has limitations like high cost, and specialised equipment requirement

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Optical impressions/ dentistry jobs

Education

Transcript of Optical impressions/ dentistry jobs