Michael R O'Connor

US Patent:

8426491, Apr 23, 2013

Filed:

May 12, 2008

Appl. No.:

12/151854

Inventors:

Xin Huo - Dover DE, US
Michael O'Connor - Easton MD, US
Robert Size - York PA, US

Assignee:

DENTSPLY International Inc. - York PA

International Classification:

A61K 6/08
A61C 5/00

US Classification:

523118, 4332171, 4332281, 522908

Abstract:

Dental compositions comprising a polymerizable compound, filler system of nanometer-sized silica particles, and polymerization system capable of being activated by light are provided. The compositions further contain a solvent such as a mixture of 1-butanol and acetone and may contain water. The nanometer-sized silica particles, having an average particle size of about 1 nm to about 100 nm, are uniformly dispersed within the resin. The compositions can be applied as a polish, sealant, bleach guard, or other coating material to the surfaces of dental restorations and teeth. Self-etching and non-self-etching compositions are provided. The cured coating forms a protective, durable film that enhances the shine and luster of the restorations and teeth.

US Patent:

20110315928, Dec 29, 2011

Filed:

May 2, 2011

Appl. No.:

13/098508

Inventors:

XIAOMING JIN - Middletown DE, US
Louis Bertrand - Lewes DE, US
Qizhou Dai - Dover DE, US
Michael T. O'Connor - Leesburg VA, US
Paul D. Hammesfahr - Lewes DE, US
Bernard Koltisko - Milton DE, US

Assignee:

DENTSPLY International Inc. - York PA

International Classification:

A61K 6/083
C09K 11/06
C08J 3/28

US Classification:

25230135, 523116, 522 90, 522 35, 522 95

Abstract:

Disclosed herein are low viscosity and low stress dental compositions comprising at least one low stress polymerizable resin and at least one filler. The dental compositions described herein have high depth of cure and self-leveling characteristics and are capable of bulk application.