%0 Journal Article %1 Grenade_2011 %A Grenade, %A Mainjot, %A Vanheusden, %B The Journal of Prosthetic Dentistry %D 2011 %J The Journal of Prosthetic Dentistry %K %P 249-255 %T Fit of single tooth zirconia copings: comparison between various manufacturing processes %V 105

@article{Grenade_2011, added-at = {2012-11-16T17:24:03.000+0100}, author = {Grenade and Mainjot and Vanheusden}, biburl = {https://www.bibsonomy.org/bibtex/21672d8004e40f74a184fd2d29c216dd5/jabreftest}, booktitle = {The Journal of Prosthetic Dentistry}, file = {:H\:\\MASTER 2\\Biblio Lus\\Grenade_2011.pdf:PDF}, groups = {public}, interhash = {113c040c161a57fa2c144c088ed20b12}, intrahash = {1672d8004e40f74a184fd2d29c216dd5}, journal = {The Journal of Prosthetic Dentistry}, keywords = {}, pages = {249-255}, review = {248 Volume 105 Issue 4 during ceramic restoration fabrication, these effects can improve the esthet- 11.O'Brien WJ, Johnston WM, Fanian F, Lam- and attempts to decrease voids at ics of dental restorations and result bert S. The surface roughness and gloss of composites. J Dent Res 1984;63:685-8. the junction between layers may in ceramic crowns that more closely 12.Sarac D, Sarac YS, Yuzbasioglu E, Bal S. The Fit of single tooth zirconia copings: result in lower reflectance and higher match natural teeth. However, further effects of porcelain polishing systems on comparison between various translucency. Color difference (∆E) of study is needed before the results of the color and surface texture of feldspathic porcelain. J Prosthet Dent 2006;96:122-8. manufacturing processes RS2-5 ranged from 0.30 to 1.45, with this study can be applied clinically. 13.Kim IJ, Lee YK, Lim BS, Kim CW. Effect reflectance increasing from 37.4 to of surface topography on the color of dental porcelain. J Mater Sci Mater Med 38.6, while ∆E values for the WS2-5 CONCLUSION 2003;14:405-9. Charlotte Grenade, DDS,a Amélie Mainjot, DDS,b and group ranged from 1.46 to 4.16, with 14.Dozic A, Kleverlaan CJ, Meegdes M, van der Alain Vanheusden, DDS, PhDc decreased reflectance from 37.06 to Within the limitations of this Zel J, Feilzer AJ. The influence of porcelain layer thickness on the final shade of ceramic 30.30 (Table I and II). Delta E values study, the following conclusions were restorations. J Prosthet Dent 2003;90:563-70. Institute of Dentistry, University of Liége Hospital (ULg CHU), for roughness and waviness groups drawn: 15.Jarad FD, Moss BW, Youngson CC, Russell Belgium showed that color differences were 1. Transmittance, reflectance, and MD. The effect of enamel porcelain thick- ness on color and the ability of a shade at the acceptable level (∆E<3.3), translucency parameter values of enam- guide to prescribe chroma. Dent Mater Statement of problem. Various CAD/CAM processes are commercially available to manufacture zirconia copings. except for WS5, which demonstrated el-dentin porcelain specimens were 2007;23:454-60. Comparative data on their performance in terms of fit are needed. a ∆E value greater than 4.0.3,24 This significantly influenced by different Ra 16.Jacobs SH, Goodacre CJ, Moore BK, Dykema RW. Effect of porcelain thickness suggests that surface waviness should and Wa values of dentin porcelain. Purpose. The purpose of this in vitro study was to compare the internal and marginal fit of single tooth zirconia cop-and type of metal-ceramic alloy on color. J have a depth of less than 0.3 mm. 2. The surface texture of the den- Prosthet Dent 1987;57:138-45. ings manufactured with a CAD/CAM process (Procera; Nobel Biocare) and a mechanized manufacturing process Porcelain specimens with a flat tin porcelain layer had a linear cor- 17.Jorgenson MW, Goodkind RJ. Spectropho- (Ceramill; Amann Girrbach). tometric study of five porcelain shades rela- surface, which did not reflect the relation with optical parameters of tive to the dimensions of color, porcelain Material and methods. Abutments (n=20) prepared in vivo for ceramic crowns served as a template for manufactur- shape of teeth, were tested in this in enamel-dentin porcelain specimens. thickness, and repeated firings. J Prosthet Dent 1979;42:96-105. ing both Procera and Ceramill zirconia copings. Copings were manufactured and cemented (Clearfil Esthetic Cement; vitro study. Although porcelain teeth 18.O'Keefe KL, Pease PL, Herrin HK. Variables Kuraray) on epoxy replicas of stone cast abutments. Specimens were sectioned. Nine measurements were performed could be manufactured in a dental REFERENCES affecting the spectral transmittance of light for each coping. Over- and under-extended margins were evaluated. Comparisons between the 2 processes were per- laboratory, these specimens would through porcelain veneer samples. J Pros- 1. Joiner A. Tooth colour: a review of the formed with a generalized linear mixed model (α=.05).thet Dent 1991;66:434-8. be difficult to measure and evaluate, literature. J Dent 2004;32 Suppl 1:3-12. 19.Obregon A, Goodkind RJ, Schwabacher WB. primarily because most colorimeters 2. Dietschi D. Layering concept in anterior Effects of opaque and porcelain surface tex- Results. Internal gap values between Procera and Ceramill groups were not significantly different (P=.13). The mean are more accurate when measuring composite restorations. J Adhes Dent ture on the color of ceramometal restorations. marginal gap (SD) for Procera copings (51(50) µm) was significantly smaller than for Ceramill (81(66) µm) (P<.005). 2001;3:71-80. J Prosthet Dent 1981;46:330-40. flat surfaces than curved surfaces. 3. Ragain JC Jr, Johnston WM. Minimum color The percentages of over- and under-extended margins were 43% and 57% for Procera respectively, and 71% and 29% 20.Xiong F, Chao Y, Zhu Z. Translucency of Previous studies have also illustrat- differences for discriminating mismatch be- newly extracted maxillary central inci- for Ceramill. ed that different brands of porce- tween composite and tooth color. J Esthet sors at nine locations. J Prosthet Dent Restor Dent 2001;13:41-8. 2008;100:11-7. lain,8 or different shades of the same Conclusions. Within the limitations of this in vitro study, the marginal fit of Procera copings was significantly better 4. Kelly JR, Nishimura I, Campbell SD. Ceramics 21.Morgan J. Introduction to geometric and than that of Ceramill copings. Furthermore, Procera copings showed a smaller percentage of over-extended margins brand,16-17 may have different effects in dentistry: historical roots and current per- physical optics. McGraw-Hill Book Com- pany. NY USA; 1953. p. 2-6 than did Ceramill copings. (J Prosthet Dent 2011;105:249-255)on the color or optical properties of spectives. J Prosthet Dent 1996;75:18-32.5. Ragain JC Jr, Johnston WM. Accuracy of 22.Johnston WM, Ma T, Kienle BH. porcelain. The porcelain shade A2 Kubelka-Munk reflectance theory applied Translucency parameter of colorants for was selected in this study, as it is a to human dentin and enamel. J Dent Res maxillofacial prostheses. Int J Prosthodont Clinical Implications 2001;80:449-52. commonly used shade. The ceramic 1995;8:79-86.6. Vaarkamp J, ten Bosch JJ, Verdonschot EH. 23.Yap AU. Color attributes and accuracy of The manufacturing process influences marginal accuracy of single tooth materials evaluated represent those Light propagation through teeth contain- Vita-based manufacturers’ shade guides. zirconia copings. Therefore, clinicians and dental laboratory technicians commonly used in dental laboratories. ing simulated caries lesions. Phys Med Biol Oper Dent 1998;23:266-71. 1995;40:1375-87. 24.Douglas RD, Brewer JD. Acceptability of should choose a manufacturing process with careful consideration. However, the conclusions may not ap- 7. Winter R. Visualizing the natural dentition. shade differences in metal ceramic crowns. ply to other brands and shades of por- J Esthet Dent 1993;5:102-17. J Prosthet Dent 1998;79:254-60. celain. Nevertheless, it is expected that 8. Brewer JD, Glennon JS, Garlapo DA. Spec- The use of zirconia restorations has is responsible for plaque retention, zirconia-based restorations.11,12 trophotometric analysis of a nongreening, Corresponding author: the concepts identified in the present metal-fusing porcelain. J Prosthet Dent Dr Fang Xiong increased in the last few decades. This microleakage and cement break- Several authors have estimated investigation may have application to 1991;65:634-41. Department of Dental Technology trend may be attributed to high esthet- down.4-10 The risk of carious lesions, maximal marginal gap (MG) val- other ceramic materials and shades. 9. O'Brien WJ. Double layer effect and other West China College of Stomatology ic properties of these restorations and periodontal disease and endodontic ues.13-20 After a clinical examination optical phenomena related to esthetics. Chengdu 610041 In this study, enamel porcelain was Dent Clin North Am 1985;29:667-72. CHINA to biocompatibility of zirconia. 1,2 inflammation is thus increased, and of more than 1000 crowns at 5-years, applied to different surface textures 10.American Society of Mechanical Engineers. Fax: +86 028 85502869 The long-term success of ceramic adverse consequences affecting the McLean et al13,14 concluded that a of dentin porcelain and underwent Surface texture: surface roughness, wavi- E-mail: xofa@163.com restorations depends on the me- health of underlying abutments and marginal opening of no more than ness and lay. ASME B46.1-2002, NY USA; simulated firing cycles, but the results 2002. p. 1-16. Copyright © 2011 by the Editorial Council for chanical and bonding properties of optical properties may result. 4-10 Poor 120 µm was clinically acceptable. were different. An understanding of The Journal of Prosthetic Dentistry. the materials.3 It is also significantly internal fit of a coping can increase However, several authors of in vitro influenced by the marginal and in- the thickness of the cement and thus studies15-20 reported a 100 µm value. ternal fit.4-12 Inaccurate marginal fit influence the mechanical stability of Various computer-aided design aClinical Assistant Professor, Department of Fixed Prosthodontics. bAdjunct Associate Professor (Clinical) and Assistant Professor, Department of Fixed Prosthodontics. cProfessor, Department of Fixed Prosthodontics. The Journal of Prosthetic Dentistry Wang et al Grenade et al}, timestamp = {2012-11-16T17:24:03.000+0100}, title = {Fit of single tooth zirconia copings: comparison between various manufacturing processes}, username = {jabreftest}, volume = 105, year = 2011 }