Surface Roughness of Dental Porcelain Fused-To-Nickel Chromium Using Different Polishing Materials and Glazing Techniques

Lateef Essa Alwan Al-Jourani, Sabah Sahib Al-Habeeb, Ola Mohammed Abdullah

Abstract


Background: Rough dental porcelain surface due to incorrect glazing technique or occlusal adjustment can cause wear of opposing
teeth and tissue irritation. The aim of this study was to measure the surface roughness of low-fusing dental porcelain after treatment
with different polishing materials and glazing techniques.
Materials and Methods: Seventy metal-ceramic specimens were fabricated and divided into seven groups according to type of
surface treatment.
Group I: Unglazed porcelain (control group).
Group II: Porcelain polished with sandblast powder and then autoglazed,
Group III: Porcelain polished with sandblast powder and then applied glaze.
Group IV: Porcelain polished with sandblast powder and then porcelain rubber wheels.
Group V: Porcelain polished with sandblast powder, porcelain rubber wheel and then polishing paste.
Group VI: Porcelain polished with sandblast powder, porcelain rubber wheels, polishing paste and then autoglazed
Group VII: Porcelain polished with sandblast powder, porcelain rubber wheels, polishing paste and then applied glazed.
The surface roughness averages “Ra” of the specimens have been determined using the profilometer.
Results: One way – ANOVA showed highly significant differences among tested groups. Group I showed roughest group with
highly significant differences among all tested groups. Followed by group II with highly significant differences, then group III which
showed no significant differences with group VII, which is the smoothest group scored. Also group IV showed “Ra” values compared
with group VI. While group V showed slightly significant differences with group VII (LSD test).
Conclusion: Polished porcelain with (rubber wheel and polishing paste) can be considered a good alternative to applied glazed of
porcelain restoration which is characterized by time consuming and sensitive technique.
Moreover, autoglazing porcelain followed by polishing or without polishing , proved to be disadvantageous since it increases surface
roughness


Keywords


dental porcelain; glaze; polishing; surface roughness

Full Text:

PDF

References


Hulterström AK., Bergman M.: Polishing systems for dental

ceramics. Acta Odontolol Scand, 1993 51: p.229-34.

Vaugher V., Bardwell D., Kugel G., Perillis : Follow-up

comparing three polishing systems to glaze porcelain,

utilizing profilometery. J Dent Res 1996 (IADR abstract

No. 1038).

Magne P., Oh WS., Pintado MR., Delong R.: Wear of enamel

and veneering ceramics after laboratory and chairside

finishing procedures. J Prosthet Dent, 1999 82: 669-79.

Kawai K., Urano M., Ebiso S.: Effect of surface roughness

of porcelain an adhesive of bacteria and their synthesizing

glucan. J Prosthet Dent, 2000 83: p.664-67.

Jagger DC., Harrison A.: An in –vitro investigation into the

wear effects of unglazed porcelain and polished porcelain

on human enamel. J Prosthet Dent, 1994 72:p. 320-23.

Jagger DC., Harrison A.: An in –vitro investigation into the

wear effects of selected restorative materials on enamel. J

Oral Rehabil, 1995 22 :p. 275-81.

Leinfelder KF.: Will ceramic restorations be challenged in

the future? Jam Dent Assoc, 2001 132: p. 46-7.

Rosenstiel SF., Land MF., Fujimoto J.: Contemporary fixed

prosthodontics. St. Louis, the CV Mosby Inc. 2001, 3rd

ed. Ch 30.

Rosenstiel SF., Baiker MA., Johnston WM.: A comparison

of glazed and polished dental porcelain. Int J Prosthodont,

2: p.524-29.

Grieve AR., Jeffert I., Sharma SJ.: An evaluation of three

methods of polishing porcelain by comparison of surface

topography with the original glaze. Rest Dent, 1991 7: p.

-36.

Scurria MS., Powers JM.: Surface roughness of two polished

ceramic materials. J Prosthet Dent, 1994 71:p. 174-77.

Zakaria MR., Al-Na’ami MM.: Profilometric study of the

surface characteristics of porcelain using different glazing

and polishing techniques. J College of Dent, 2002 11:

p.163-66.

Al-Hadithy RH.: An evaluation of the effects of different

polishing agent on the surface roughness of porcelain. A

Master degree thesis, University of Baghdad, College of

Dentistry, Dept. of conservative dentistry; 2004.

Goldin EB., Boyd NW., Goldstein GR., Hittelmam EL.,

Thompson VP.: Marginal fit of leucite-glass pressable

ceramic restorations and ceramic- pressed-to-metal

restorations. J Prosthet Dent, 2005 93:p.143-7.

Rosenstiel SF., Porter SS.: Apparent fracture toughness of

dental porcelain with a metal substructure. Dent Mater,

4:p.187-90.

Shillingburg HT., Hob S., Whitsett LD.: Fundamentals of

Fixed Prosthodontics. Ch25. 3rd ed. Quintessence pub Co.

, USA: p. 265-456 1997.

Rosenstiel SF., Land MF., Fujimoto J.: Contemporary fixed

prosthodontics. St. Louis, the CV Mosby Inc., 2nd ed. Ch

; 1995.

Galindo DF., Ercoli C., Craser GN., Tallents RH., Moss

ME.: Effect of soldering on metal-porcelain bond strength

in repaired porcelain-fused to metal castings. J prosthet

Dent, 2001 85: p. 88-98 .

Huang HH., Lin MC., Lee TH.: Effect of chemical

composition of Ni-Cr dental casting alloys on the bonding

characterization between porcelain and metal. J Oral

Rehabil, 2005 32: p. 206-12.

Lafeuente J.D., Chares A., Camiol R.: Bond strength of

cured resin cement to electrical etched base metal alloy. J

Est Dent, 2000 12:p. 105.

Seghi RR., Denry IL., Rosenstiel SF.: Relative fracture

toughness and hardness of new dental ceramics. J Prosthet

Dent, 1995 74: p.145-50.

Rizkalla AS., Jones WD.: Indentation fracture toughness

and dynamic elastic moduli for commercial feldspathic

dental porcelain materials. Dent Mater, 2004 20: p.198-

Klausner LH., Cartwright CB., Charbenerau GT.: Polished

versus autoglazed porcelain surfaces. J Prosthet Dent 1982

(2): p. 157-62.

Zalkind M., Lauer S., Stern N.: Porcelain surface texture

after reduction and natural glazing. J Prosthet Dent, 55:

p.30-3; 1986.

Rhoads JE., Rudd KD., Morrow RM.: Dental laboratory

procedures (fixed partial denture. Vol. 2, Ch 2, p.284). The

CV Mosby Co.,USA; 1986.

Anusavice KJ(1996).: Phillips science of dental materials.

Ch26, 10th ed. Philadelphia WD Saunders: p.327-426; 1996

Cook PA., Griswold WH., Post AC.: The effect of superficial

colorant and glaze on the surface texture of vacuum-fired

porcelain. J Prosthet Dent, 1984 51 (5): p. 516-20.

Siluk WD., Plekavich EJ.: Surface finishing of dental

porcelain. J Prosthet Dent. 1981 46: p.217-21.

Anmol C. , Soni S : Effect of two different finishing systems

on surface roughness of feldspathic and fluorapatite

porcelains in ceramo‑metal restorations: Comparative in

vitro study. J Int Soc Prevent Communit Dent 2014; 4:22-8.

Haywood VB, Haymann HO., Kusy RP.: Polishing porcelain

veneers: an SEM and specular reflectance analysis. Dent

Mater, 1988 4: p.116-21.

Tebrock OC.: Tissue retraction for esthetics ceramometal

crowns. J Prosthet Dent, 1986 55(1): p.21-3.

Cornelis HP., Toursuke KC.: Enhancing esthetics in

porcelain fused to metal through technique modifications.

Dent Clin North Am, 1985 29 (4): p.753-9.

Rosenstiel SF.: Linear firing shrinkage of metal-ceramic

restorations. Brit Dent J, 1987 162: p.390-2.

Bassing C., Wiktorsson A.: Comparison of two different

methods of polishing porcelain. Scand J Dent Res, 1983

Dec; 91 (6) 482-7.

Raimondo RL., Richardson JT., Wiedner B.: Polished

versus autoglazed dental porcelain. J Prosthet Dent, 1990

: p.553-57.

Patterson CJW., Mclundie AC., Stirrups P., Taylor WG.:

Repolishing of porcelain by using a refinishing kit. J

Prosthet Dent, 1991 65: p. 383-88.

Edge MJ., Wagner WC.: Surface cracking in polished and

self-glazed dental porcelain.J Prosthodont, 1994 3 (3):

p.130-3.

Morrison KN., Waenick ME.: Staining porcelain bonded to

metal restorations. J Prosthet Dent, 15: p. 713-6; 1973.

Giordano RA.,Cima M., Pober R.: Effect of surface finish

on the flexural strength of feldspathic and aluminous dental

ceramics. Int J Prosthodont, 1995 8: p. 311-19.

Anusavice KJ.:(2003 )Phillips science of dental materials.

Ch26, 11th ed. Philadelphia WD Saunders: p.588-93; 2003.




DOI: http://dx.doi.org/10.26477/idj.v37i1.36

Refbacks

  • There are currently no refbacks.