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Copal

National Institutes of Health

Papers overview

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2014
2014
The first fossil orchid bee from Early Miocene Mexican amber is described and figured.  Eulaema ( Apeulaema ) zigrasi Engel, new… 
2007
2007
Abstract A new fossil orchid bee, Euglossa (Euglossa) cotylisca Hinojosa-Díaz and Engel, new species (Anthophila: Apidae: Apinae… 
Review
2000
Review
2000
A number of laboratory and clinical studies over the last 15 years have explored the potential advantages of bonding amalgam to… 
1996
1996
Microleakage presents a major challenge to the success of all restorations placed in the oral cavity, resulting in postoperative… 
1995
1995
This in vitro study compared the microleakage of Class 5 amalgam restorations placed in extracted human teeth lined with a 4-META… 
Review
1985
Review
1985
The suitability of an automatic sphygmomanometer for epidemiological work was evaluated in two studies. In the first, blood… 
1983
1983
Radiocarbon analysis of selected amber and copal specimens yielded infinite radiocarbon ages for amber as expected, but all the… 
1967
1967
Postoperative microleakage in amalgam-restored teeth can cause inflammation and thermal sensitivity. A copal varnish can prevent…