Impression techniques in Removable Partial Denture.pptx

1. Impression techniques in Removable
Partial Denture
Presented by
M.Swathi
2nd year Postgraduate
Department of
Prosthodontics

2. Contents
• Introduction
• Impression Materials
• Anatomic Form And Functional Form
• Concept Of Functional Impression
• Need Of Functional Impression
Indication For Functional Impression
Objectives Of Functional Impression
• Distal Extension Based Partial Denture

3. • Mclean’s Physiologic Impression Technique
• Hindel’s Modifications
• Functional Relining Method
• Fluid Wax Technique
• Selective Pressure Impression
• Altered Cast Technique
• Modifications Of Altered Cast Technique
• Recent advances
• Conclusion

4. Impression:
• A negative likeness or copy in reverse of the surface of an object ; imprint of teeth
and adjacent structures for use in dentistry. GPT – 10
Partial Denture Impression
• A negative likeness of a part or all of a partially edentulous arch . GPT – 10
Introduction

5. IMPRESSION TRAY
• A receptacle in to which suitable impression material is placed to make negative
likeness or a device that is used to carry, confine and control impression material
while making an impression.

6. REF : O’Brien Dental Materials & their Selection 1997

7. Factors that influence
the selection of
impression materials
are
Convenience of
use
Time of
manipulation and
setting time
Cost
Operator training
and preference
Need for special
trays

50. Recent Advances

51. • Use of intraoral scanning and 3-dimensional printing in the fabrication of a removable partial
denture for a patient with limited mouth opening
• REF :Wu J, Li Y, Zhang Y. Use of intraoral scanning and 3-dimensional printing in the fabrication of a removable partial denture for a patient with limited mouth opening. The
Journal of the American Dental Association. 2017 May 1;148(5):338-41.

53. • A novel digital altered cast impression technique for fabricating a removable partial denture with a
distal extension
• REF: Wu J, Cheng Y, Gao B, Yu H. A novel digital altered cast impression technique for fabricating a removable partial denture with a distal extension. The Journal of the
American Dental Association. 2020 Apr 1;151(4):297-302.

57. Conclusion
• An accurate impression is vital for the success of a removable partial dentures .
• So proper selection of material ,impression technique and the skill of the dentist
plays a key role in the success of the overall treatment.

58. References
• Stewart’s Clinical Removable Partial Prosthodontics Fourth Edition
• Annals of Prosthodontics & Restorative Dentistry, April-June 2017:3(2):52-56
• Phillips science of dental materials edition 12
• Ansari IH. A new procedure for separating the edentulous distal extension portion from the master
cast when an altered cast is made. The Journal of Prosthetic Dentistry. 1994 Dec 1;72(6):666-9 •
Plummer KD. Technique for boxing an altered cast impression. The Journal of prosthetic dentistry.
1982 May 1;47(5):573-5
• Dumbrigue HB, Esquivel JF. Selective-pressure single impression procedure for tooth-mucosa–
supported removable partial dentures.

59. • Wu J, Cheng Y, Gao B, Yu H. A novel digital altered cast impression technique for fabricating a
removable partial denture with a distal extension. The Journal of the American Dental Association.
2020 Apr 1;151(4):297-302.
• Wu J, Li Y, Zhang Y. Use of intraoral scanning and 3-dimensional printing in the fabrication of a
removable partial denture for a patient with limited mouth opening. The Journal of American
Dental Association. 2017 May 1;148(5):338-41.
• Maccraken’s Removable Partial Prosthodontics 13th Edition