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ORIGINAL ARTICLE
Year : 2013  |  Volume : 16  |  Issue : 3  |  Page : 279-284

Accuracy of impressions with different impression materials in angulated implants


1 Department of Prosthodontics, Navodaya Dental College, Raichur, India
2 Department of Conservative dentistry, Navodaya Dental College, Raichur, India
3 Director, Branemark Osseointegration Center India, M G Road, Secunderabad, India
4 Department of Prosthodontics, S Nijalingappa institute of dental sciences, Gulbarga, India
5 Director, Branemark Osseointegration Center India, Golden Plaza Complex, Court Road, Gulbarga, India

Correspondence Address:
R Chowdhary
Branemark osseointegration center India, Golden plaza complex, Court Road, Gulbarga
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1119-3077.113447

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Purpose: To evaluate the dimensional accuracy of the resultant (duplicative) casts made from two different impression materials (polyvinyl siloxane and polyether) in parallel and angulated implants. Materials and Methods: Three definitive master casts (control groups) were fabricated in dental stone with three implants, placed at equi-distance. In first group (control), all three implants were placed parallel to each other and perpendicular to the plane of the cast. In the second and third group (control), all three implants were placed at 10° and 15 o angulation respectively to the long axis of the cast, tilting towards the centre. Impressions were made with polyvinyl siloxane and polyether impression materials in a special tray, using a open tray impression technique from the master casts. These impressions were poured to obtain test casts. Three reference distances were evaluated on each test cast by using a profile projector and compared with control groups to determine the effect of combined interaction of implant angulation and impression materials on the accuracy of implant resultant cast. Results: Statistical analysis revealed no significant difference in dimensional accuracy of the resultant casts made from two different impression materials (polyvinyl siloxane and polyether) by closed tray impression technique in parallel and angulated implants. Conclusion: On the basis of the results of this study, the use of both the impression materials i.e., polyether and polyvinyl siloxane impression is recommended for impression making in parallel as well as angulated implants.


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