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ACTA
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Table of Contents for June 2006 • Volume 22 • Number 53 |
LIGHT-EMITTING DIODE POLYMERIZATION:
A REVIEW OF PERFORMANCE, PART I
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Joe C. Ontiveros Rade Paravina
UNIVERSITY OF TEXAS DENTAL BRANCh AT HOUSTON; DEPARTMENT OF RESTORATIVE DENTISTRY AND BIOMATERIALS; UNIVERSITY OF TEXAS DENTAL BRANCH AT HOUSTON 6516 M.D. ANDERSON BLVD., ROOM 493 HOUSTON, TX 77030-3402,USA |
| Abstract |
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Bonded direct and indirect restorations have become the appropriate choice in many clinical situations where conservation of tooth structure and esthetics are paramount. Inadequate polymerization is known to have deleterious effects on resin bonded restorations such as tooth sensitivity, microleakage, fractures or complete debonding of restorations. Quartz-tungsten-halogen (QTH) units have been widely used for polymerizing resin-based dental materials for decades. However, QTH lamps exhibit several shortcomings, which is probably why the light-emitting diode (LED) polymerization lights were introduced as the alternative means for polymerizing light cured restorations. Some drawbacks of Quartz-tungsten-halogen technology have been reviewed in this paper, together with several important properties associated with LED polymerization lights and dental materials treated using LED technology, such as depth of cure and hardness. Key words: polymerization, light-emitting diode, quartz-tungstenhalogen, depth of cure, hardness, degree of conversion, compressive strength, flexural strength, bond strength |
| ...Authors and Reprint Information |
| Joe C. Ontiveros, DDS, MS
Head, Section of Biomaterials and Director
of Esthetic Dentistry
U.S.A
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