Comparison of horizontal and vertical methods of tooth preparation for a prosthetic crown
More details
Hide details
Medical University of Łódź, Department of Prosthodontics, Poland
Corresponding author
Paweł Łabno   

Paweł Łabno Dental Office, Narutowicza 25, 33-100 Tarnow, Poland
J Pre Clin Clin Res. 2020;14(1):25-28
The application of magnifying devices, such as magnifiers, microscopes, precision drills, intraoral scanners, printed models, milled, and monolithic restorations, increases the precision of the preparation, accuracy of workmanship and marginal tightness, ultimately providing a very high level of quality of prosthetic restoration. The article compares the pros and cons of several types of tooth preparations for different kinds of crowns, including the modern concept of verti prep (vertical preparation). Tooth preparation for a prosthetic crown is always invasive in character and leads to irreversible loss of tooth hard tissues. In the case of tooth preparation with vital dental pulp there is a risk of its irritation, inflammation, necrosis, and endodontic treatment in the future. A variety of attempts have been made in dental prosthetics to develop the best method of tooth preparation, which – on the one hand – would ensure adequate marginal fit, emergency profile, and at the same time, would lead to the least loss of enamel and dentine ithe preparation process. Current research has confirmed, that there is no single universal and recommended in all cases type of tooth preparation for a prosthetic crown. The choice of a finish line depends on a number of factors, such as pulp vitality, location of the tooth, its inclination, type of material from which a restoration will be manufactured, crown convexity, patient’s age and the size of such a construction. It should be emphasized at the same time that in some clinical situations, the decision on the type of preparation and/or reconstruction to be made is taken intra-procedurally.
Shillingburg HT, Hobo S, Fisher DW. Preparation design and margin distortion in porcelain-fused-to-metal restorations. J Prosthet Dent. 2003. doi: 10.1016/S0022-3913(03)00239-7.
Edelhoff D, Sorensen JA. Tooth structure removal associated with various preparation designs for anterior teeth. J Prosthet Dent. 2002. doi: 10.1067/mpr.2002.124094.
Asavapanumas C, Leevailoj C. The influence of finish line curvature on the marginal gap width of ceramic copings. J Prosthet Dent. 2013; 109(4): 227 233. doi: 10.1016/S0022-3913(13)60049-9.
Tao J, Han D. The effect of finish line curvature on marginal fit of all-ceramic CAD/CAM crowns and metal-ceramic crowns. Quintessence Int. 2009; 40(9): 745–752. pubmed/19862401. Accessed July 9, 2018.
Valenti M, Valenti A. Retrospective survival analysis of 110 lithium disilicate crowns with feather-edge marginal preparation. Int J Esthet Dent. 2015; 10(2): 246–257. pubmed/25874272. Accessed July 9, 2018.
Tripathi S, Amarnath GS, Muddugangadhar BC, Sharma A, Choudhary S. Effect of Preparation Taper, Height and Marginal Design Under Varying Occlusal Loading Conditions on Cement Lute Stress: A Three Dimensional Finite Element Analysis. J Indian Prosthodont Soc. 2014; 14(S1): 110–118. doi: 10.1007/s13191-014-0378-7.
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. doi: 10.1016/j.prosdent.2013.08.003.
Vigolo P, Mutinelli S, Biscaro L, Stellini E. An In Vivo Evaluation of the Fit of Zirconium-Oxide Based, Ceramic Single Crowns with Vertical and Horizontal Finish Line Preparations. J Prosthodont. 2015; 24(8): 603–609. doi: 10.1111/jopr.12340.
Aboushelib MN. Fatigue and Fracture Resistance of Zirconia Crowns Prepared with Different Finish Line Designs. J Prosthodont. 2012. doi: 10.1111/j.1532-849X.2011.00787.x.
Schmitz JH, Cortellini D, Granata S, Valenti M. Monolithic lithium disilicate complete single crowns with feather-edge preparation design in the posterior region: A multicentric retrospective study up to 12 years. Quintessence Int (Berl). 2017. doi: 10.3290/j.qi.a38678.
Sadid-Zadeh R, Farsaii A, Goodarzi A, Davis EL. Loss of tooth structure associated with preparation for two monolithic CAD-CAM complete coverage restorations. J Prosthet Dent. 2018; 120(3): 403–408. doi: 10.1016/J.PROSDENT.2017.12.018.
Vaswani PL, Sanyal PK, Gosavi SY, Kore AR. An In-vitro Comparative Stereomicroscopic Analysis and Evaluation of Marginal Accuracy in Porcelain Fused to Metal Copings Fabricated in Two Different Finish Lines Using Variant Die Materials. J Clin DIAGNOSTIC Res. 2017; 11(1): ZC01-ZC05. doi: 10.7860/JCDR/2017/21370.9131.
Subasi G, Ozturk N, Inan O, Bozogullari N. Evaluation of marginal fit of two allceramic copings with two Finish lines. Eur J Dent. 2012. doi: 10.1055/s-0039-1698946.
Syu JZ, Byrne G, Land MF, Laub LW. Influence of finish-line geometry on the fit of crowns. Int J Prosthodont. 1993.
Goodacre CJ, Campagni W V., Aquilino SA. Tooth preparations for complete crowns: An art form based on scientific principles. J Prosthet Dent. 2001. doi: 10.1067/mpr.2001.114685.
Limkangwalmongkol P, Chiche GJ, Blatz MB. Precision of fit of twon margin designs for metal-ceramic crowns: Basic science research. J Prosthodont. 2007. doi: 10.1111/j.1532-849X.2007.00186.x.
Piemjai M. Effect of Seating Force, Margin Design, and Cement on Marginal Seal and Retention of Complete Metal Crowns. Int J Prosthodont. 2001.
Loi I, Di Felice A. Biologically oriented preparation technique (BOPT): a new approach for prosthetic restoration of periodontically healthy teeth. Eur J Esthet Dent. 2013; 8(1): 10–23. http://www.ncbi.nlm.nih. gov/pubmed/23390618. Accessed July 9, 2018.
Lang NP, Kiel RA, Anderhalden K. Clinical and microbiological effects of subgingival restorations with overhanging or clinically perfect margins. J Clin Periodontol. 1983. doi: 10.1111/j.1600-051X.1983.tb01295.x.
Comlekoglu M, Dundar M, Özcan M, Gungor M, Gokce B, Artunc C. Influence of Cervical Finish Line Type on the Marginal Adaptation of Zirconia Ceramic Crowns. Oper Dent. 2009; 34(5): 586–592. doi: 10.2341/08-076-L.
Magallanes Ramos R, Clark D, Mazza M, Venuti P, Maiolino M, Kopanja S, Cirimpei V, Tawfik AA, Bordonali D, Acatrinei B, Sutradhar JC, Czerwinski M, A Sienkiewicz JK. The Shoulderless Approach A New Rationale in Prosthetic Dentistry. Tomorrow Tooth Journal. https://.
22. skopanja-vcirimpei-aatawfik-dbordonalibacatrinei-jcsutradhar-mczerwinski-asienkiewicz-jkhademi. Published 2017. Accessed November 20, 2019.
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. doi: 10.1111/j.1532-849X.2011.00831.x.
Rashid Habib S, Ginan Al Ajmi M, Al Dhafyan M, Jomah A, Abualsaud H, Almashali M. Effect of Margin Designs on the Marginal Adaptation of Zirconia Copings. Acta Stomatol Croat. 2017; 51(3): 179–187. doi: 10.15644/asc51/3/1.
Mitov G, Anastassova-Yoshida Y, Nothdurft FP, Von See C, Pospiech P. Influence of the preparation design and artificial aging on the fracture resistance of monolithic zirconia crowns. J Adv Prosthodont. 2016. doi: 10.4047/jap.2016.8.1.30.
Ichim I, Kuzmanovic DV, Love RM. A finite element analysis of ferrule design on restoration resistance and distribution of stress within a root. Int Endod J. 2006. doi: 10.1111/j.1365-2591.2006.01085.x.
Viverito JA. The porcelain-faced, cast, shoulderless jacket crown. KOKUBYO-GAKKAI-ZASSHI. 1930. doi: 10.5357/koubyou1927.4.2_120.
Smith GP. The marginal fit of the full cast shoulderless crown. J Prosthet Dent. 1957. doi: 10.1016/0022-3913(57)90079-3.
Vojdani M, Safari A, Mohaghegh M, Pardis S, Mahdavi F. The effect of porcelain firing and type of finish line on the marginal fit of zirconia copings. J Dent (Shiraz, Iran). 2015.
Paniz G, Nart J, Gobbato L, et al. Clinical Periodontal Response to Anterior All-Ceramic Crowns with Either Chamfer or Feather-edge Subgingival Tooth Preparations: Six-Month Results and Patient Perception. Int J Periodontics Restorative Dent. 2017. doi: 10.11607/ prd.2765 Agustín-Panadero R, Solá-Ruíz MF. Vertical preparation for fixed prosthesis rehabilitation in the anterior sector. J Prosthet Dent. 2015; 114(4): 474–478. doi: 10.1016/j.prosdent.2015.05.010.
Imburgia M, Canale A, Cortellini D, Maneschi M, Martucci C, Valenti M. Minimally invasive vertical preparation design for ceramic veneers. Int J Esthet Dent. 2016.
Agustín-Panadero R, Solá-Ruíz MF, Chust C, Ferreiroa A. Fixed dental prostheses with vertical tooth preparations without finish lines: A report of two patients. J Prosthet Dent. 2016. doi: 10.1016/j.prosdent.2015.11.011.
Journals System - logo
Scroll to top