Micro-computed tomography measurement of the marginal gap of different types of glass-ceramic veneers fabricated by heat-pressed technique.
Keywords:Micro-computed tomography, Marginal gap, Glass-ceramic, Veneer
Background and Objective: This study was conducted to measure the marginal gap size of two different glass-ceramics fabricated by heat-pressed technique with micro-computed tomography scanning and analysis.
Methods: Twenty sound human maxillary central incisors were prepared in window preparation design for the fabrication of laminate veneers. The samples were divided into two equal groups of Ten for each group. The impression for all the samples of each group was made by a conventional one-step impression technique using ImpregumTM Penta medium-bodied polyether impression material. The auto-mixing unit (pentamix) was used to ensure a standardized mixture for all the samples. Laminate veneers were fabricated using a heatpressed method with two different types of glass-ceramics ( IPS Emax press and Empress esthetic, Ivoclar Vivadent). IPS Emax ceramic was used for restorations of the first group, and IPS Empress esthetic was used for restorations of the second group. The finished restorations were cleaned and polished to be prepared for cementation. All of the restorations of each group were separately bonded to the samples of the corresponding groups using a light-cured cement. A dental surveyor with a fixed weight of 200g for standardization was used during the procedure. After the completion of the cementation procedure, the samples were cleaned and polished to be ready for a quantitative micro-computed tomography scanning and analysis for marginal gap size measurement.
Results: The mean(±SD) value of IPS Emax was 0.056(±0.023)mm3, and the same value for IPS Empress was 0.128(±0.195)mm3. No statistically significant difference was found between in marginal gap size of both types of the glass-ceramic (p = 0.261).
Conclusion: Within the limitations of this study, both IPS Emax and IPS Empress have comparable marginal accuracy.
Manipal S, Manipal S, Mohan CA, Mohan CA, Kumar DL, Kumar DL, et al. The importance of dental aesthetics among dental students assessment of knowledge. J Int Soc Prev ComDent. 2014;4(1):48.
Akarslan ZZ, Sadik B, Erten H, Karabulut E. Dental esthetic satisfaction, received and desired dental treatments for improvement of esthetics. Indian J Dent Res Off Publ Indian Soc Dent Res. 2009;20(2):195–200.
Dumfahrt H, Schäffer H. Porcelain Laminate Veneers. A Retrospective Evaluation after 1 to 10 Years of Service: Part II - Clinical Results. Int J Prosthodont. 2000;13:9–18.
Meyer Filho A, Vieira LCC, Baratieri LN, Lopes GC. Porcelain veneers as an alternative for the esthetic treatment of stained anterior teeth: a clinical report. Quintessence Int. 2005;36(3):191–6.
Pini NP, Aguiar FHB, Lima DANL, Lovadino JR, Terada RSS, Pascotto RC. Advances in dental veneers: materials, applications, and techniques. Clin Cosmet Investig Dent. 2012;4:9–16.
Radz GM. Minimum thickness anterior porcelain restorations. Dent Clin North Am. 2011;55(2):353–70, ix.
Sadaqah NR. Ceramic Laminate Veneers: Materials Advances and Selection. Open J Stomatol. 2014;04(05):268–79.
Mounajjed R, M Layton D, Azar B. The marginal fit of E.max Press and E.max CAD lithium disilicate restorations: A critical review. Dent Mater J. 2016;35(6):835–44.
Ghaffari T, Hamedi-Rad F, Fakhrzadeh V. Marginal adaptation of Spinell InCeram and feldspathic porcelain laminate veneers. Dent Res J. 2016;13(3):239–44.
Felton DA, Kanoy BE, Bayne SC, Wirthman GP. Effect of in vivo crown margin discrepancies on periodontal health. J Prosthet Dent. 1991;65(3):357–64.
McLean JW, von Fraunhofer JA. The estimation of cement film thickness by an in vivo technique. Br Dent J. 1971;131(3):107–11.
Davis DR. Comparison of fit of two types of allceramic crowns. J Prosthet Dent. 1988;59(1):12–6.
Keshvad A, Hooshmand T, Asefzadeh F, Khalilinejad F, Alihemmati M, Van Noort R. Marginal gap, internal fit, and fracture load of leucite-reinforced ceramic inlays fabricated by CEREC inLab and hot-pressed techniques. J Prosthodont Off J Am Coll Prosthodont. 2011;20(7):535–40.
May KB, Russell MM, Razzoog ME, Lang BR. Precision of fit: the Procera AllCeram crown. J Prosthet Dent. 1998;80(4):394–404.
Reich S, Uhlen S, Gozdowski S, Lohbauer U. Measurement of cement thickness under lithium disilicate crowns using an impression material technique. Clin Oral Investig. 2011;15(4):521–6.
Krasanaki M-E, Pelekanos S, Andreiotelli M, Koutayas S-O, Eliades G. X-ray microtomographic evaluation of the influence of two preparation types on marginal fit of CAD/CAM alumina copings: a pilot study. Int J Prosthodont. 2012;25(2):170–2.
Contrepois M, Soenen A, Bartala M, Laviole O. Marginal adaptation of ceramic crowns: a systematic review. J Prosthet Dent. 2013;110(6):447–454.e10.
Amir Rad FA, Succaria FG, Morgano SM. Fracture resistance of porcelain veneered zirconia crowns with exposed lingual zirconia for anterior teeth after thermal cycling: An in vitro study. Saudi Dent J. 2015;27(2):63–9.
Shetty A, Kaiwar A, Shubhashini N, Ashwini P, Naveen D, Adarsha M, et al. Survival rates of porcelain laminate restoration based on different incisal preparation designs: An analysis. J Conserv Dent JCD. 2011;14(1):10–5.
Zarone F, Apicella D, Sorrentino R, Ferro V, Aversa R, Apicella A. Influence of tooth preparation design on the stress distribution in maxillary central incisors restored by means of alumina porcelain veneers: a 3D-finite element analysis. Dent Mater Off Publ Acad Dent Mater. 2005;21(12):1178–88.
Nemane V, Akulwar RS, Meshram S. The Effect of Various Finish Line Configurations on the Marginal Seal and Occlusal Discrepancy of Cast Full Crowns After Cementation - An In-vitro Study. J Clin Diagn Res JCDR. 2015;9(8):ZC18–21.
Alikhasi M, Siadat H, Nasirpour A, Hasanzade M. Three-Dimensional Accuracy of Digital Impression versus Conventional Method: Effect of Implant Angulation and Connection Type. Int J Dent. 2018;2018:1–9.
Nawafleh NA, Mack F, Evans J, Mackay J, Hatamleh MM. Accuracy and Reliability of Methods to Measure Marginal Adaptation of Crowns and FDPs: A Literature Review: Methods to Measure Marginal Adaptation of Crowns and FDPs. J Prosthodont. 2013;22(5):419–28.
Nahedh HA, Sibai N. Evaluation of Interfacial Gap Volume of Two Low-shrinkage Composites Using
Micro–Computed Tomography. Oper Dent. 2017;42(6):658–68.
Al-Dwairi ZN, Alkhatatbeh RM, Baba NZ, Goodacre CJ. A comparison of the marginal and internal
fit of porcelain laminate veneers fabricated by pressing and CAD-CAM milling and cemented with 2 different resin cements. J Prosthet Dent. 2019;121(3):470–6.
Azar B, Eckert S, Kunkela J, Ingr T, Mounajjed R. The marginal fit of lithium disilicate crowns: Press vs. CAD/CAM. Braz Oral Res [Internet]. 2018 Jan 22 [cited 2019 Oct 1];32(0). Available from: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242018000100200&lng=en&tlng=en
Cunali RS, Saab RC, Correr GM, Cunha LF da, Ornaghi BP, Ritter AV, et al. Marginal and Internal Adaptation of Zirconia Crowns: A Comparative Study of Assessment Methods. Braz Dent J. 2017;28(4):467–73.
Oz FD, Bolay S. Comparative Evaluation of Marginal Adaptation and Fracture Strength of Different Ceramic Inlays Produced by CEREC Omnicam and Heat-Pressed Technique. Int J Dent. 2018;2018:1–10.
Gold SA, Ferracane JL, da Costa J. Effect of Crystallization Firing on Marginal Gap of CAD/CAM Fabricated Lithium Disilicate Crowns: Crystallization Marginal Gap CAD/CAM e.max Crown. J Prosthodont. 2018;27(1):63–6.
Alkumru H, Hullah WR, Marquis PM, Wilson HJ. Factors affecting the fit of porcelain jacket crowns. Br Dent J. 1988;164(2):39–43.31. Neves FD, Prado CJ, Prudente MS, Carneiro
TAPN, Zancopé K, Davi LR, et al. Micro-computed tomography evaluation of marginal fit of lithium disilicate crowns fabricated by using chairside CAD/CAM systems or the heat-pressing technique. J Prosthet Dent. 2014;112(5):1134–40
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