瓷烧结和不同数字制作技术对钴铬烤瓷冠适合性的影响

doi:10.13481/j.1671-587x.20180317

Abstract

Abstract: Objective: To explore the influence of different manufacturing techniques and different scanning objects in the marginal and internal fits of the Co-Cr porcelain crowns after procelain firing,and to provide the basis for judging the influencing factors of longevity of restorations. Methods: Five extracted maxillary premolar were selected.According to the prepared tooth,silicone rubber and stone die restoration models,which were fabricated by CAD/CAM and selective laser melting(SLM),the restorations were divided into control group(traditinal casting),tooth-SLM group,silicone rubber-SLM group,stone die-SLM group,tooth-CAD/CAM group,silicone rubber-CAD/CAM group, and stone die-CAD/CAM group.Then all the restorations were fired with the porcelain.The marginal and internal fits of the specinens were measured by micro-compated tomography(Micro-CT). Results: Compared with control group,the AMD of restorations in tooth-SLM and CAD/CAM groups were decresed(P<0.05),and the MG of restorations in silicone rubber-SLM group was decresed(P<0.05).Compared with control group,the CA and AW of restorations in silicone rubber-SLM group were decresed(P<0.05),the AW of restorations in tooth-CAD/CAM group was the least;compared with control group, the AOT and OA of restorations in stone die-SLM group and CAD/CAM group were decresed(P<0.05),and the AOT and OA of restorations in silicone rubber-CAD/CAM were the least.Compared with before porcelain firing,the marginal fit and internal fit of restorations after porcelain firing were incresed(P<0.05).There was positive corrlation between the MG of restorations and fabricated techniques and scanning objects(P<0.05).There was positive corrlation between the average of internal fit of restorations and fabricated techniques and scanning objects(P<0.05). Conclusion: The porcelain firing can affect the marginal and internal fits of Co-Cr porcelain crowns.The restorations fabricated by SLM had a better marginal fit and the restorations fabricated by CAD/CAM has a better internal fit.

Key words: porcelain firing, selective laser melting, CAD/CAM, Co-Cr porcelain crowns

CLC Number:

R783

ZHAO Ying, XIE Yu, HE Xi, ZHANG Yan, WEI Wei, LI Jiang. Influence of porcelain firing and different manufacturing techniques in fit of Co-Cr porcelain crowns[J].Journal of Jilin University Medicine Edition, 2018, 44(03): 548-552.

References

[1] Kane LM,Chronaios D,Sierraalta M,et al. Marginal and internal adaptation of milled cobalt-chromium copings[J].J Prosthet Dent,2015,114(5):680-685.
[2] Quante K,Ludwig K,Kern M.Marginal and internal fit of metal-ceramic crowns fabricated with a new laser melting technology[J].Dent Mater,2008,24(10):1311-1315.
[3] Naveen HC,Pillai LK,Porwal A,et al.Effect of porcelain-firing cycles and surface finishing on the marginal discrepancy of titanium copings[J].J Prosthodont,2011,20(2):101-105.
[4] Ucar Y,Akova T,Akyil MS,et al.Internal fit evaluation of crowns prepared using a new dental crown fabrication technique:laser-sintered Co-Cr crowns[J].J Prosthet Dent,2009,102(4):253-259.
[5] Hindelang F,Zurbach R,Roggo Y.Micro computer tomography for medical device and pharmaceutical packaging analysis[J].J Pharm Biomed Anal,2015,108:38-48.
[6] Laurent M,Scheer P,Dejou J,et al.Clinical evaluation of the marginal fit of cast crowns——validation of the silicone replica method[J].J Oral Rehabil,2008,35(2):116-122.
[7] Borba M,Cesar PF,Griggs JA,et al.Adaptation of all-ceramic fixed partial dentures[J].Dent Mater,2011,27(11):1119-1126.
[8] Kale E,Yilmaz B,Seker E,et al.Effect of fabrication stages and cementation on the marginal fit of CAD-CAM monolithic zirconia crowns[J].J Prosthet Dent,2017,118(6):736-741.
[9] Mously HA,Finkelman M,Zandparsa R,et al.Marginal and internal adaptation of ceramic crown restorations fabricated with CAD/CAM technology and the heat-press technique[J].J Prosthet Dent,2014,112(2):249-256.
[10] Castillo-Oyagüe R,Lynch CD,Turrión AS,et al.Misfit and microleakage of implant-supported crown copings obtained by laser sintering and casting techniques,luted with glass-ionomer,resin cements and acrylic/urethane-based agents[J].J Dent,2013,41(1):90-96.
[11] Borba M,Miranda WG Jr,Cesar PF,et al.Evaluation of the adaptation of zirconia-based fixed partial dentures using micro-CT technology[J].Braz Oral Res,2013,27(5):396-402.
[12] Xin XZ,Chen J,Xiang N,et al.Surface characteristics and corrosion properties of selective laser melted Co-Cr dental alloy after porcelain firing[J].Dent Mater,2014,30(3):263-270.
[13] McLean JW,von Fraunhofer JA.The estimation of cement film thickness by an in vivo technique[J].Br Dent J,1971,131(3):107-111.
[14] Sundar MK, Chikmagalur SB,Pasha F.Marginal fit and microleakage of cast and metal laser sintered copings-an in vitro study[J].J Prosthodont Res,2014,58(4):252-258.
[15] Lambert H,Durand JC,Jacquot B,et al.Dental biomaterials for chairside CAD/CAM:State of the art[J].J Adv Prosthodont,2017,9(6):486-495.
[16] Mously HA,Finkelman M,Zandparsa R,et al.Marginal and internal adaptation of ceramic crown restorations fabricated with CAD/CAM technology and the heat-press technique[J].J Prosthet Dent,2014,112(2):249-256.
[17] Sakornwimon N,Leevailoj C.Clinical marginal fit of zirconia crowns and patients' preferences for impression techniques using intraoral digital scanner versus polyvinyl siloxane material[J].J Prosthet Dent,2017,118(3):386-391.
[18] Martins F,Branco P,Reis J,et al.Dimensional stability of two impression materials after a 6-month storage period[J].Acta Biomater Odontol Scand,2017,3(1):84-91.
[19] Shokry TE,Attia M,Mosleh I,et al.Effect of metal selection and porcelain firing on the marginal accuracy of titanium-based metal ceramic restorations[J].J Prosthet Dent,2010,103(1):45-52.
[20] Patil A,Singh K,Sahoo S,et al.Comparative assessment of marginal accuracy of grade Ⅱ titanium and Ni-Cr alloy before and after ceramic firing:An in vitro study[J].Eur J Dent,2013,7(3):272-277.

Influence of porcelain firing and different manufacturing techniques in fit of Co-Cr porcelain crowns

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