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Chemical Compound Review

leucite     potassium; aluminum(+3) cation; dioxido...

Synonyms: K(Alsi2O6), AC1L3XIM, AC1Q1TQC, AR-1H6894, 12003-49-5, ...
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High impact information on leucite

  • X-ray diffraction showed that after ion-exchange and firing, leucite transformed into either tetragonal rubidium leucite or cubic cesium leucite [1].
  • Dental porcelains rely on the high-thermal-expansion mineral leucite to elevate their bulk thermal expansion to levels compatible with dental PFM alloys [2].
  • An ANOVA showed that there was a significant difference in the weight fraction of leucite for Silhouette, Ceramco II, and Optec HSP porcelains [3].
  • METHODS: The following four groups of 20 bar specimens (25 x 4 x 1.2 mm) were fabricated (ISO standard 6872): E1, a hot-pressed leucite-based core ceramic (IPS Empress); E2, a hot-pressed lithia-based core ceramic (IPS Empress 2); ES, a hot-pressed lithia-based core ceramic (Experimental); and GV, a glass veneer (IPS Empress2 body) [4].
  • RelyXARC showed a significantly better adaptation to P60 inlays compared with the leucite-reinforced Empress ceramic but not the Vitablocs Mark II ceramic [5].

Biological context of leucite

  • These changes in the lattice parameters resulted in a net expansion of the leucite cell volume [6].
  • PURPOSE: The purpose of this study was to retrospectively evaluate leucite reinforced-glass ceramic crowns (Empress) placed in patients who regularly visit general practices [7].

Anatomical context of leucite

  • The fact that the strength of Flexo Ceram Dentine was not affected by the different surface treatments is probably due to the size of the leucite particles, which apparently induce more stress concentration than the surface flaws and the roughness of the surface [8].
  • The adrenal gland was carefully removed from the animal and placed on a platform of a leucite chamber [9].
  • PURPOSE: The aim of this study was to assess the resistance to fracture of leucite-reinforced ceramic restorations placed on molars with different cavity preparation designs [10].
  • The adrenal gland, along with ligated blood vessels and the cannula, was carefully removed from the animal and placed on a platform of a leucite chamber [11].

Associations of leucite with other chemical compounds


Gene context of leucite

  • OBJECTIVES: The elevated temperatures and slow heating and cooling rates associated with a thermal expansion run provide a thermal treatment comparable to those previously shown to produce leucite crystallization in dental PFM porcelains [13].
  • PURPOSE: To compare the debonding/crack initiation strength (D/CIS) of a low-fusing pressable leucite-based glass ceramic (PC) fused to metal to a feldspathic porcelain (FP) fused to metal [14].
  • The increase in leucite after firing is consistent with the increase in flexural strength following firing observed by Dong et al in 1992 [15].

Analytical, diagnostic and therapeutic context of leucite

  • The present study was undertaken to determine whether the increase in porcelain thermal expansion might be attributable to crystallization of additional leucite during slow cooling of the porcelain [16].
  • The group corresponding to 22.2 wt% added leucite fired at 1150 degrees C exhibited a mean biaxial flexural strength significantly higher than that of all other groups that were not significantly different from the control group [17].
  • Leucite-reinforced glass ceramic inlays after six years: wear of luting composites [18].
  • Microstructural analysis and determination of the leucite volume fraction were performed on polished specimens etched with 2% HF for 15s by means of scanning electron microscopy [19].
  • Leucite weight fraction was determined by quantitative X-ray powder diffraction analysis via an internal standard technique [20].


  1. Effect of ion exchange on the microstructure, strength, and thermal expansion behavior of a leucite-reinforced porcelain. Denry, I.L., Holloway, J.A., Rosenstiel, S.F. J. Dent. Res. (1998) [Pubmed]
  2. Microcracks in dental porcelain and their behavior during multiple firing. Mackert, J.R., Williams, A.L. J. Dent. Res. (1996) [Pubmed]
  3. Leucite content of selected dental porcelains. Piché, P.W., O'Brien, W.J., Groh, C.L., Boenke, K.M. J. Biomed. Mater. Res. (1994) [Pubmed]
  4. Fracture behavior of lithia disilicate- and leucite-based ceramics. Della Bona, A., Mecholsky, J.J., Anusavice, K.J. Dental materials : official publication of the Academy of Dental Materials. (2004) [Pubmed]
  5. Marginal quality of tooth-colored restorations in class II cavities after artificial aging. Manhart, J., Schmidt, M., Chen, H.Y., Kunzelmann, K.H., Hickel, R. Operative dentistry. (2001) [Pubmed]
  6. Quantification of leucite concentration using X-ray diffraction. Ong, J.L., Farley, D.W., Norling, B.K. Dental materials : official publication of the Academy of Dental Materials. (2000) [Pubmed]
  7. Clinical examination of leucite-reinforced glass-ceramic crowns (Empress) in general practice: a retrospective study. Sjögren, G., Lantto, R., Granberg, A., Sundström, B.O., Tillberg, A. The International journal of prosthodontics. (1999) [Pubmed]
  8. The influence of surface roughness on porcelain strength. de Jager, N., Feilzer, A.J., Davidson, C.L. Dental materials : official publication of the Academy of Dental Materials. (2000) [Pubmed]
  9. Influence of pentobarbital-Na on stimulation-evoked catecholamine secretion in the perfused rat adrenal gland. Lim, D.Y., Kang, T.J., Hong, S.P., Chung, C.H., Choi, C.H., Lee, S.I., Park, Y.W., Kwack, J.J., Ki, J.D., Kim, C.W., Park, C.Y. Korean J. Intern. Med. (1997) [Pubmed]
  10. Influence of cavity preparation design on fracture resistance of posterior Leucite-reinforced ceramic restorations. Soares, C.J., Martins, L.R., Fonseca, R.B., Correr-Sobrinho, L., Fernandes Neto, A.J. The Journal of prosthetic dentistry. (2006) [Pubmed]
  11. Influence of 17- alpha-estradiol on catecholamine secretion from the perfused rat adrenal gland. Park, Y.H., Cho, G.S., Cho, E.T., Park, Y.K., Lee, M.J., Chung, J.Y., Hong, S.P., Lee, J.J., Jang, Y., Yoo, H.J., Choi, C.H., Lim, D.Y. Korean J. Intern. Med. (1996) [Pubmed]
  12. Biaxial flexural strength and microstructure changes of two recycled pressable glass ceramics. Albakry, M., Guazzato, M., Swain, M.V. Journal of prosthodontics : official journal of the American College of Prosthodontists. (2004) [Pubmed]
  13. Potential interference of leucite crystallization during porcelain thermal expansion measurement. Mackert, J.R., Khajotia, S.S., Russell, C.M., Williams, A.L. Dental materials : official publication of the Academy of Dental Materials. (1996) [Pubmed]
  14. Comparison of bond strength of a pressed ceramic fused to metal versus feldspathic porcelain fused to metal. Schweitzer, D.M., Goldstein, G.R., Ricci, J.L., Silva, N.R., Hittelman, E.L. Journal of prosthodontics : official journal of the American College of Prosthodontists. (2005) [Pubmed]
  15. Leucite crystallization during processing of a heat-pressed dental ceramic. Mackert, J.R., Russell, C.M. The International journal of prosthodontics. (1996) [Pubmed]
  16. Effect of cooling rate on leucite volume fraction in dental porcelains. Mackert, J.R., Evans, A.L. J. Dent. Res. (1991) [Pubmed]
  17. Effect of cubic leucite stabilization on the flexural strength of feldspathic dental porcelain. Denry, I.L., Mackert, J.R., Holloway, J.A., Rosenstiel, S.F. J. Dent. Res. (1996) [Pubmed]
  18. Leucite-reinforced glass ceramic inlays after six years: wear of luting composites. Krämer, N., Frankenberger, R. Operative dentistry. (2000) [Pubmed]
  19. Correlation between fracture toughness and leucite content in dental porcelains. Cesar, P.F., Yoshimura, H.N., Miranda Júnior, W.G., Okada, C.Y. Journal of dentistry. (2005) [Pubmed]
  20. Water-enhanced crystallization of leucite in dental porcelain. Mackert, J.R., Williams, A.L., Ergle, J.W., Russell, C.M. Dental materials : official publication of the Academy of Dental Materials. (2000) [Pubmed]
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