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The Effect of Marginal Preparation Type on an All-Ceramic Anterior Crown: A Finite Element Study

Year 2016, , 214 - 221, 24.03.2017
https://doi.org/10.7126/cumudj.298892

Abstract

Objectives: The aim of the study was to evaluate and
compared the effects of 2 different tooth preparation designs on the stress
distribution in tooth, cement, core and two ceramic layers of all ceramic
anterior crown using the 3 Dimensional (3D) Finite-Element-Analysis (FEA) method.
Anterior tooth-crown configuration composed of both layers of restoration is
lacking.

Materials and Methods: 1
mm
circumferential shoulder and chamfer finish line
preparations were performed with rounded shoulder and chamfer diamond
cylindrical burs with rounded angles on 2 maxillary central teeth. 1 mm
thickness of the frameworks were (IPS e.max Press, Ivoclar-Vivadent, Schaan,
Liechtenstein) prepared by pressing technique. After scanning the frameworks
for FEA, dentin and enamel ceramics (IPS e.max Ceram, Ivoclar-Vivadent) were
applied. Each ceramic layer was scanned for finite-element models. The
Variolink II (Ivoclar-Vivadent) was used as a luting material and modeled. A
200 N static load was applied at 45° to the palatal surface. 3D-FEA was performed
with I-DEAS software.

Results: Rounded-shoulder
model showed higher Von Mises stress values in prepared tooth, core, resin
cement, and both two layers of the ceramic than chamfer model. Rounded-shoulder
preparation type within all evaluated models had more dispersed stress
distribution localization areas than chamfer preparation type’s models. The
highest Von-Mises stress values were found within the first ceramic layer of
the shoulder model (26.5 MPa) on 1/3 of the buccal surface. Low stress values
were found at dentin tooth structures for both chamfer and rounded-shoulder
models.







Conclusions: Rounded-shoulder
preparation type showed higher Von-Mises stress values at both layers of crown.
Minimum Von-Mises stress values were found at dentin regardless of the
preparation type.

Objectives: The aim of the study was to evaluate and
compared the effects of 2 different tooth preparation designs on the stress
distribution in tooth, cement, core and two ceramic layers of all ceramic
anterior crown using the 3 Dimensional (3D) Finite-Element-Analysis (FEA) method.
Anterior tooth-crown configuration composed of both layers of restoration is
lacking.

References

  • 1. Rafferty BT, Janal MN, Zavanelli RA, Silva NR, Rekow ED, Thompson VP, Coelho PG. Design features of a three-dimensional molar crown and related maximum principal stress. A finite element model study. Dent Mater 2010;26:156-163.
  • 2. Tang X, Tang C, Su H, Luo H, Nakamura T, Yatani H. The effects of repeated heat-pressing on the mechanical properties and microstructure of IPS e.max Press. J Mech Behav Biomed Mater 2014;40:390-396.
  • 3. Beschnidt SM, Strub JR. Evaluation of the marginal accuracy of different all-ceramic crown systems after simulation in the artificial mouth. J Oral Rehabil 1999;26:582-593.
  • 4. Campos RE, Soares CJ, Quagliatto PS, Soares PV, de Oliveira OB Jr, Santos-Filho PC, Salazar-Marocho SM. In vitro study of fracture load and fracture pattern of ceramic crowns: a finite element and fractography analysis. J Prosthodont 2011;20:447-455.
  • 5. Drummond JL, King TJ, Bapna MS, Koperski RD. Mechanical property evaluation of pressable restorative ceramics. Dent Mater 2000;16:226-233.
  • 6. Mak M, Qualtrough AJ, Burke FJ. The effect of different ceramic materials on the fracture resistance of dentin-bonded crowns. Quintessence Int 1997;28:197-203.
  • 7. Raigrodski AJ. Contemporary materials and technologies for all-ceramic fixed partial dentures: A review of the literature. J Prosthet Dent 2004;92:557-562.
  • 8. Zarone F, Russo S, Sorrentino R. From porcelain-fused-to-metal to zirconia: Clinical and experimental considerations. Dent Mater 2011;27:83-96.
  • 9. Proos KA, Swain MV, Ironside J. Influence of margin design and taper abutment angle on a restored crown of a first premolar using finite element analysis. Int J Prosthodont 2003;16:442-449.
  • 10. Coelho PG, Silva NR, Bonfante EA, Guess PC, Rekow ED, Thompson VP. Fatigue testing of two porcelain-zirconia all-ceramic crown systems. Dent Mater 2009;25:1122-1127.
  • 21. Euán R, Figueras-Álvarez O, Cabratosa-Termes J, Brufau-de Barberà M, Gomes-Azevedo S. Comparison of the marginal adaptation of zirconium dioxide crowns in preparations with two different finish lines. J Prosthodont 2012;21:291-295.
  • 22. Beuer F, Aggstaller H, Edelhoff D, Gernet W. Effect of preparation design on the fracture resistance of zirconia crown copings. Dent Mater J 2008;27:362-367.
  • 23. Gehrt M, Wolfart S, Rafai N, Reich S, Edelhoff D. Clinical results of lithium-disilicate crowns after up to 9 years of service. Clin Oral Investig 2013;17:275-284.
  • 24. Anusavice KJ, Hojjatie B, Dehoff PH. Influence of metal thickness on stress distribution in metal-ceramic crowns. J Dent Res 1986;65:1173-1178.
Year 2016, , 214 - 221, 24.03.2017
https://doi.org/10.7126/cumudj.298892

Abstract

References

  • 1. Rafferty BT, Janal MN, Zavanelli RA, Silva NR, Rekow ED, Thompson VP, Coelho PG. Design features of a three-dimensional molar crown and related maximum principal stress. A finite element model study. Dent Mater 2010;26:156-163.
  • 2. Tang X, Tang C, Su H, Luo H, Nakamura T, Yatani H. The effects of repeated heat-pressing on the mechanical properties and microstructure of IPS e.max Press. J Mech Behav Biomed Mater 2014;40:390-396.
  • 3. Beschnidt SM, Strub JR. Evaluation of the marginal accuracy of different all-ceramic crown systems after simulation in the artificial mouth. J Oral Rehabil 1999;26:582-593.
  • 4. Campos RE, Soares CJ, Quagliatto PS, Soares PV, de Oliveira OB Jr, Santos-Filho PC, Salazar-Marocho SM. In vitro study of fracture load and fracture pattern of ceramic crowns: a finite element and fractography analysis. J Prosthodont 2011;20:447-455.
  • 5. Drummond JL, King TJ, Bapna MS, Koperski RD. Mechanical property evaluation of pressable restorative ceramics. Dent Mater 2000;16:226-233.
  • 6. Mak M, Qualtrough AJ, Burke FJ. The effect of different ceramic materials on the fracture resistance of dentin-bonded crowns. Quintessence Int 1997;28:197-203.
  • 7. Raigrodski AJ. Contemporary materials and technologies for all-ceramic fixed partial dentures: A review of the literature. J Prosthet Dent 2004;92:557-562.
  • 8. Zarone F, Russo S, Sorrentino R. From porcelain-fused-to-metal to zirconia: Clinical and experimental considerations. Dent Mater 2011;27:83-96.
  • 9. Proos KA, Swain MV, Ironside J. Influence of margin design and taper abutment angle on a restored crown of a first premolar using finite element analysis. Int J Prosthodont 2003;16:442-449.
  • 10. Coelho PG, Silva NR, Bonfante EA, Guess PC, Rekow ED, Thompson VP. Fatigue testing of two porcelain-zirconia all-ceramic crown systems. Dent Mater 2009;25:1122-1127.
  • 21. Euán R, Figueras-Álvarez O, Cabratosa-Termes J, Brufau-de Barberà M, Gomes-Azevedo S. Comparison of the marginal adaptation of zirconium dioxide crowns in preparations with two different finish lines. J Prosthodont 2012;21:291-295.
  • 22. Beuer F, Aggstaller H, Edelhoff D, Gernet W. Effect of preparation design on the fracture resistance of zirconia crown copings. Dent Mater J 2008;27:362-367.
  • 23. Gehrt M, Wolfart S, Rafai N, Reich S, Edelhoff D. Clinical results of lithium-disilicate crowns after up to 9 years of service. Clin Oral Investig 2013;17:275-284.
  • 24. Anusavice KJ, Hojjatie B, Dehoff PH. Influence of metal thickness on stress distribution in metal-ceramic crowns. J Dent Res 1986;65:1173-1178.
There are 14 citations in total.

Details

Subjects Health Care Administration
Journal Section Original Research Articles
Authors

Ayşe Gözde Türk

Publication Date March 24, 2017
Submission Date December 7, 2015
Published in Issue Year 2016

Cite

EndNote Türk AG (March 1, 2017) The Effect of Marginal Preparation Type on an All-Ceramic Anterior Crown: A Finite Element Study. Cumhuriyet Dental Journal 19 3 214–221.

Cumhuriyet Dental Journal (Cumhuriyet Dent J, CDJ) is the official publication of Cumhuriyet University Faculty of Dentistry. CDJ is an international journal dedicated to the latest advancement of dentistry. The aim of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of dentistry. First issue of the Journal of Cumhuriyet University Faculty of Dentistry was published in 1998. In 2010, journal's name was changed as Cumhuriyet Dental Journal. Journal’s publication language is English.


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