Document Detail

Properties of packable dental composites.
MedLine Citation:
PMID:  11323865     Owner:  NLM     Status:  MEDLINE    
The introduction of many new packable composites suggests that these products are rapidly gaining popularity. The purpose of this study was to evaluate the in vitro properties of a variety of packable composites and to determine if significant enhancements in physical and mechanical properties have been achieved for these materials compared with two popular nonpackable posterior composites. For the five packable and two regular composites tested (ALERT, Pyramid-Dentin, Pyramid-Enamel, Solitaire, SureFil, Heliomolar, and Z100), the values for fracture toughness, flexure strength, flexure modulus, hardness, and volumetric polymerization shrinkage were determined. In general, although the packable composites were of heavier consistency, they had mechanical properties that were intermediate to (ALERT, Pyramid, and SureFil) or lower than (Solitaire) those of the nonpackable materials. These results could have been predicted based on the similar methacrylate resin chemistry and filler volumes of the various composites. No composite had adequate depth-of-cure when tested in increments greater than 2 mm thick. Polymerization contraction of the packable composites was similar to or higher than that of the nonpackable composites. In addition, the radiopacity of at least one material, Solitaire, was not considered to be adequate (less than 2 mm of aluminum). The results of this study suggest that these packable composites are unlikely to offer improved clinical performance over well-placed nonpackable composites.
K K Choi; J L Ferracane; T J Hilton; D Charlton
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Publication Detail:
Type:  Comparative Study; Evaluation Studies; Journal Article    
Journal Detail:
Title:  Journal of esthetic dentistry     Volume:  12     ISSN:  1040-1466     ISO Abbreviation:  J Esthet Dent     Publication Date:  2000  
Date Detail:
Created Date:  2001-04-27     Completed Date:  2001-06-21     Revised Date:  2009-08-27    
Medline Journal Info:
Nlm Unique ID:  9010411     Medline TA:  J Esthet Dent     Country:  Canada    
Other Details:
Languages:  eng     Pagination:  216-26     Citation Subset:  D    
Kyung Hee University, Seoul, Korea.
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MeSH Terms
Acrylic Resins
Analysis of Variance
Composite Resins / chemistry*
Contrast Media
Dental Restoration, Permanent / methods*
Materials Testing
Polymers / chemistry
Silicon Dioxide
Reg. No./Substance:
0/Acrylic Resins; 0/Alert composite resin; 0/Composite Dental Resin; 0/Composite Resins; 0/Contrast Media; 0/Heliomolar; 0/Methacrylates; 0/Polymers; 0/Polyurethanes; 0/Pyramid Packable Composite; 0/Solitaire composite resin; 0/SureFil packable composite; 0/Z100 composite resin; 123759-84-2/Silux Plus; 7440-67-7/Zirconium; 7631-86-9/Silicon Dioxide

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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