The quality of Alginate Impressions for fabrication of Fixed Partial Dentures Received by Commercial Dental Laboratories in Bangladesh
DOI:
https://doi.org/10.3329/updcj.v2i1.13950Keywords:
Alginate, Dental impression materials, Fixed Partial Denture, Impression errorAbstract
The study was conducted to evaluate the quality of alginate impression sent to commercial dental laboratories for fabrication of Fixed partial dentures (FPD), to describe the frequency of clinically detectable errors and to determine correlation between factors.
A Cross-sectional Study in eight commercial dental laboratories was conducted and a sample of 171 impressions was examined. For each impression, type of tray used, number of prepared units per jaw, model preparation time, manipulation quality, impression of arch, tray showing through impression material and utilization of embedded retraction cord were recorded.
Over half of the specimens (58%) inspected were found to be unsatisfactory as they contained at least one detectable error. These errors included alginate manipulation with granularity (5.8%), Impression of partial arch (26.3%), Bubbles at finish line (4.1%) Presence of tears along the margin (6.4%), Tray showing through material (43.9%), Delayed model prepared (29.8%) and Did not used Retraction cord (78.4%). Significant associations were found between manipulation of impression material and presence of tearing at the margin line ( p=.007) and presence of bubbles at the margin line (p=.011).
Selecting alginate impression material as a final impression is not a good choice for fabricating FPD. Therefore, the dental practitioners need to revise their treatment plan before taking impression.
DOI: http://dx.doi.org/10.3329/updcj.v2i1.13950
Update Dent. Coll. j: 2012; 2 (1): 02-07
Downloads
245
95
Downloads
Published
How to Cite
Issue
Section
License
licensing, and copyright:
Articles in Update Dental College Journal are licensed under a Creative Commons Attribution 4.0 International License CC BY-4.0. This license permits
- Share — copy and redistribute the material in any medium or format
- Adapt — remix, transform, and build upon the material for any purpose, even commercially.
The licensor cannot revoke these freedoms as long as you follow the following license terms.
-
Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
