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A Comparison of Two Commonly Employed Impression Methods for Multiple Splinted Implants in Completely Edentulous
Vidushi Saxena1, Salil Pawah2, Manisha Gulati2
1Department of Prosthodontics, Manav Rachna Dental College, Faridabad, Haryana, India.
Summary
Polyvinyl siloxane and polyether impression materials show comparable accuracy for multiple splinted implants. Both materials, used with their respective trays, offer clinically acceptable results for implant impressions.
Area of Science:
- Dental Materials Science
- Prosthodontics
- Implant Dentistry
Background:
- Accurate implant impressions are crucial for stress-free final restorations.
- Various impression materials and trays exist, requiring clinical evaluation.
- Understanding material accuracy is key for successful implant prosthetics.
Purpose of the Study:
- To compare the accuracy of two common impression techniques for multiple splinted implants.
- Evaluate polyvinyl siloxane with an open stock tray versus polyether with an open custom tray.
Main Methods:
- An in vitro comparative experimental study.
- Ten master casts were fabricated using two impression techniques.
- Inter-implant distances measured using a coordinate measuring machine and analyzed statistically.
Main Results:
- Mostly non-significant differences were found between the two impression techniques.
- Polyvinyl siloxane demonstrated slightly higher accuracy than polyether, though not statistically significant.
- Scheffé's method was used for accuracy analysis.
Conclusions:
- Both polyether and polyvinyl siloxane exhibit comparable dimensional accuracy for implant impressions.
- Clinically acceptable results were achieved with both impression materials and tray combinations.
- The tested impression materials and trays can be used interchangeably in clinical practice.
