226
|
Lee HL, Orlowski JA, Luebben GE. Use of abrasive pastes in polishing composite restoratives. JOURNAL - ACADEMY OF GENERAL DENTISTRY 1974; 22:34-6. [PMID: 4525500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
227
|
Lee HL, Orlowski JA, Enabe E, Rogers BJ. In vitro and in vivo evaluation of direct-bonding orthodontic bracket systems. JOURNAL OF CLINICAL ORTHODONTICS : JCO 1974; 8:227-38. [PMID: 4596414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
228
|
|
229
|
Abstract
The ability of acid etchants to penetrate dentin was tested under simulated clinical conditions. No penetration of the dentinal tubules by acid was detected by use of two different test methods, although pronounced roughening of the treated surfaces was observed.
Collapse
|
230
|
Lee HL, Orlowski JA, Kobashigawa AI. In vitro and in vivo studies on a composite resin for the repair of incisal fractures. JOURNAL - CALIFORNIA DENTAL ASSOCIATION 1973; 1:42-7. [PMID: 4515331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
231
|
Lee HL, Orlowski JA, Elwell RB, Tate A. A new high-strength composite-type cement for orthodontic bands. JOURNAL OF CLINICAL ORTHODONTICS : JCO 1973; 7:514-9. [PMID: 4515335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
232
|
Lee HL, Orlowski JA, Kobashigawa AI. A protective coating for combating decalcification in orthodontic practice. JOURNAL OF CLINICAL ORTHODONTICS : JCO 1973; 7:249-56. [PMID: 4514273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
233
|
Grethe G, Gutzwiller J, Lee HL, Uskoković MR. Synthesis of 9-epi-quinine and 9-epi-quinidine. Helv Chim Acta 1972; 55:1044-7. [PMID: 5023593 DOI: 10.1002/hlca.19720550330] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
234
|
Abstract
Development of elastomeric polyurethane resins for use as adhesive liners under composite restorative materials is reviewed. The elastic nature of these adhesive films appears to provide a marginal seal despite dimensional changes of the restorative material. Adhesive strengths of 1,500 psi to enamel have been maintained after thermal cycling and after storage for one year in water.
Collapse
|
235
|
Abstract
Development and laboratory evaluation of a thermosetting polyurethane resin designed for use as a pit and fissure sealant was conducted. The material exhibited adhesion to enamel in excess of 1,300 psi. Radioautographs and scanning electron photomicrographs did not indicate leakage of isotope and showed an intimate contact between the resin and the fissure walls. The resin appeared to penetrate into the deepest fissures. The material is hydrolysis resistant; 90% of the original adhesive strength was retained after one year in 37 C water.
Collapse
|
236
|
Abstract
The relatively new class of dental restoratives, termed composites, contain thermosetting resin binders and various concentrations of several different types of inert fillers. Because of the difference in types and amounts of resins and fillers present in these materials, each restorative has unique surface characteristics. In addition, the various resin types and filler loading volumes cause differences in polymerization shrinkage and adaptation to the margins of cavity preparations. A combination of radioisotope leakage studies and scanning electron microscopy studies was used to investigate the surfaces and adaptation of four of these composite materials in comparison to an amalgam, silicate, and unfilled poly ( methyl methacrylate).
Collapse
|
237
|
Lee HL, Swartz ML, Smith FF. Physical properties of four thermosetting dental restorative resins. J Dent Res 1969; 48:526-35. [PMID: 5256497 DOI: 10.1177/00220345690480040501] [Citation(s) in RCA: 60] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Four aromatic, thermosetting, composite dental restorative materials were evaluated for their mechanical and physical properties. The properties of two materials approached those of dentin and dental amalgams. One of the materials tested appeared to have the necessary requirements for use as both an anterior and posterior restorative material.
Collapse
|
238
|
Lee HL. Adhesion between living tissue and plastics. I. Adhesion of epoxy and polyurethane resins to dentin and enamel. JOURNAL OF BIOMEDICAL MATERIALS RESEARCH 1969; 3:349-67. [PMID: 5793839 DOI: 10.1002/jbm.820030213] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
239
|
|
240
|
Fox HH, Gibas JT, Lee HL, Boris A. Synthetic antigonadotropins. IV. Bromotriphenylethylenes. J Med Chem 1965; 8:415-6. [PMID: 5883703 DOI: 10.1021/jm00328a002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
241
|
Lee HL. Abortus Fever. Proc R Soc Med 1936; 29:502. [PMID: 19990648 PMCID: PMC2076140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
|