Advertisement
Journal of Prosthetic Dentistry

The effect of post, core, crown type, and ferrule presence on the biomechanical behavior of endodontically treated bovine anterior teeth

      Statement of problem

      Unresolved controversy exists concerning the remaining coronal tooth structure of anterior endodontically treated teeth and the best treatment option for restoring them.

      Purpose

      The purpose of this study was to evaluate the effect of post, core, crown type, and ferrule presence on the deformation, fracture resistance, and fracture mode of endodontically treated bovine incisors.

      Material and methods

      One hundred and eighty bovine incisors were selected and divided into 12 treatment groups (n=15). The treatment variations were: with or without ferrule, restored with cast post and core, glass fiber post with composite resin core, or glass fiber post with fiber-reinforced core, and metal- or alumina-reinforced ceramic crown (n=15). The restored incisors were loaded at a 135-degree angle, and the deformation was measured using strain gauges placed on the buccal and proximal root surfaces. Specimens were subsequently loaded to the point of fracture. Strain and fracture resistance results were analyzed by 3-way ANOVA and Tukey HSD tests (α=.05).

      Results

      Ferrule presence did not significantly influence the buccal strain and fracture resistance for the ceramic crown groups, irrespective of core and crown type. Ferrule presence resulted in lower strains and higher fracture resistance in the metal crown groups, irrespective of core. The cast post and core showed lower strain values than groups with glass fiber posts when restored with metal crowns.

      Conclusions

      Core type did not affect the deformation and fracture resistance of endodontically treated incisors restored with alumina-reinforced ceramic crowns. The presence of a ferrule improved the mechanical behavior of teeth restored with metal crowns, irrespective of core type.
      To read this article in full you will need to make a payment

      Purchase one-time access:

      Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online access
      One-time access price info
      • For academic or personal research use, select 'Academic and Personal'
      • For corporate R&D use, select 'Corporate R&D Professionals'

      Subscribe:

      Subscribe to Journal of Prosthetic Dentistry
      Already a print subscriber? Claim online access
      Already an online subscriber? Sign in
      Institutional Access: Sign in to ScienceDirect

      References

        • Zhi-Yue L
        • Yu-Xing Z
        Effects of post-core design and ferrule on fracture resistance of endodontically treated maxillary central incisors.
        J Prosthet Dent. 2003; 89: 368-373
        • Soares CJ
        • Santana FR
        • Silva NR
        • Preira JC
        • Pereira CA
        Influence of the endodontic treatment on mechanical properties of root dentin.
        J Endod. 2007; 33: 603-606
        • Sorensen JA
        • Martinoff JT
        Intracoronal reinforcement and coronal coverage: a study of endodontically treated teeth.
        J Prosthet Dent. 1984; 51: 780-784
        • Hansen EK
        • Asmussen E
        • Christiansen NC
        In vivo fractures of endodontically treated posterior teeth restored with amalgam.
        Endod Dent Traumatol. 1990; 6: 49-55
        • Helfer AR
        • Melnick S
        • Schilder H
        Determination of the moisture content of vital and pulpless teeth.
        Oral Surg Oral Med Oral Pathol. 1972; 34: 661-670
        • Stanford JW
        • Weigel KV
        • Paffenbarger GC
        • Sweeney WT
        Compressive properties of hard tooth tissues and some restorative materials.
        J Am Dent Assoc. 1960; 60: 746-756
        • Sedgley CM
        • Messer HH
        Are endodontically treated teeth more brittle?.
        J Endod. 1992; 18: 332-335
        • Reeh ES
        • Messer HH
        • Douglas WH
        Reduction in tooth stiffness as a result of endodontic and restorative procedures.
        J Endod. 1989; 15: 512-516
        • Fernandes AS
        • Dessai GS
        Factors affecting the fracture resistance of post-core reconstructed teeth: a review.
        Int J Prosthodont. 2001; 14: 355-363
        • Büttel L
        • Krastl G
        • Lorch H
        • Naumann M
        • Zitzmann NU
        • Weiger R
        Influence of post fit and post length on fracture resistance.
        Int Endod J. 2009; 42: 47-53
        • 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; 39: 443-452
        • Sirimai S
        • Riis DN
        • Morgano SM
        An in vitro study of the fracture resistance and the incidence of vertical root fracture of pulpless teeth restored with six post-and-core systems.
        J Prosthet Dent. 1999; 81: 262-269
        • Akkayan B
        An in vitro study evaluating the effect of ferrule length on fracture resistance of endodontically treated teeth restored with fiber-reinforced and zirconia dowel systems.
        J Prosthet Dent. 2004; 92: 155-162
        • Pereira JR
        • de Ornelas F
        • Conti PC
        • do Valle AL
        Effect of a crown ferrule on the fracture resistance of endodontically treated teeth restored with prefabricated posts.
        J Prosthet Dent. 2006; 95: 50-54
        • Ma PS
        • Nicholls JI
        • Junge T
        • Phillips KM
        Load fatigue of teeth with different ferrule lengths, restored with fiber posts, composite resin cores, and all-ceramic crowns.
        J Prosthet Dent. 2009; 102: 229-234
        • Varvara G
        • Perinetti G
        • Di Iorio D
        • Murmura G
        • Caputi S
        In vitro evaluation of fracture resistance and failure mode of internally restored endodontically treated maxillary incisors with differing heights of residual dentin.
        J Prosthet Dent. 2007; 98: 365-372
        • Heydecke G
        • Butz F
        • Hussein A
        • Strub JR
        Fracture strength after dynamic loading of endodontically treated teeth restored with different post-and-core systems.
        J Prosthet Dent. 2002; 87: 438-445
        • Akkayan B
        • Gülmez T
        Resistance to fracture of endodontically treated teeth restored with different post systems.
        J Prosthet Dent. 2002; 87: 431-437
        • Strub JR
        • Beschnidt SM
        Fracture strength of 5 different all-ceramic crown systems.
        Int J Prosthodont. 1998; 11: 602-609
        • McLaren EA
        • White SN
        Survival of In-Ceram crowns in a private practice: a prospective clinical trial.
        J Prosthet Dent. 2000; 83: 216-222
        • Potiket N
        • Chiche G
        • Finger IM
        In vitro fracture strength of teeth restored with different all-ceramic crown systems.
        J Prosthet Dent. 2004; 92: 491-495
        • Zhang YX
        • Zhang WH
        • Lu ZY
        • Wang KL
        Fracture strength of custom-fabricated Celay all-ceramic post and core restored endodontically treated teeth.
        Chin Med J (Engl). 2006; 119: 1815-1820
        • Torbjörner A
        • Fransson B
        A literature review on the prosthetic treatment of structurally compromised teeth.
        Int J Prosthodont. 2004; 17: 369-376
        • Santos-Filho PC
        • Castro CG
        • Silva GR
        • Campos RE
        • Soares CJ
        Effects of post system and length on the strain and fracture resistance of root filled bovine teeth.
        Int Endod J. 2008; 41: 493-501
        • Maceri F
        • Martignoni M
        • Vairo G
        Mechanical behaviour of endodontic restorations with multiple prefabricated posts: a finite-element approach.
        J Biomech. 2007; 40: 2386-2398
        • Pegoretti A
        • Fambri L
        • Zappini G
        • Bianchetti M
        Finite element analysis of a glass fibre reinforced composite endodontic post.
        Biomaterials. 2002; 23: 2667-2682
        • Naumann M
        • Preuss A
        • Frankenberger R
        Reinforcement effect of adhesively luted fiber reinforced composite versus titanium posts.
        Dent Mater. 2007; 23: 138-144
        • Pierrisnard L
        • Bohin F
        • Renault P
        • Barquins M
        Corono-radicular reconstruction of pulpless teeth: a mechanical study using finite element analysis.
        J Prosthet Dent. 2002; 88: 442-448
        • Soares PV
        • Santos-Filho PC
        • Martins LR
        • Soares CJ
        Influence of restorative technique on the biomechanical behavior of endodontically treated maxillary premolars. Part I: fracture resistance and fracture mode.
        J Prosthet Dent. 2008; 99: 30-37
        • Soares PV
        • Santos-Filho PC
        • Gomide HA
        • Araujo CA
        • Martins LR
        • Soares CJ
        Influence of restorative technique on the biomechanical behavior of endodontically treated maxillary premolars. Part II: strain measurement and stress distribution.
        J Prosthet Dent. 2008; 99: 114-122
        • Lertchirakarn V
        • Palamara JE
        • Messer HH
        Finite element analysis and strain-gauge studies of vertical root fracture.
        J Endod. 2003; 29: 529-534
        • Lin CP
        • Chou HG
        • Chen RS
        • Lan WH
        • Hsieh CC
        Root deformation during root-end preparation.
        J Endod. 1999; 25: 668-671
        • Ross RS
        • Nicholls JI
        • Harrington GW
        A comparison of strains generated during placement of five endodontic posts.
        J Endod. 1991; 17: 450-456
        • Schilke R
        • Lisson JA
        • Bauss O
        • Geurtsen W
        Comparison of the number and diameter of dentinal tubules in human and bovine dentine by scanning electron microscopic investigation.
        Arch Oral Biol. 2000; 45: 355-361
        • Fonseca RB
        • Haiter-Neto F
        • Carlo HL
        • Soares CJ
        • Sinhoreti MA
        • Puppin-Rontani RM
        • et al.
        Radiodensity and hardness of enamel and dentin of human and bovine teeth, varying bovine teeth age.
        Arch Oral Biol. 2008; 53: 1023-1029
        • Fonseca RB
        • Haiter-Neto F
        • Fernandes-Neto AJ
        • Barbosa GA
        • Soares CJ
        Radiodensity of enamel and dentin of human, bovine and swine teeth.
        Arch Oral Biol. 2004; 49: 919-922
        • Bjorndal AM
        • Henderson WG
        • Skidmore AE
        • Kellner FH
        Anatomic measurements of human teeth extracted from males between the ages of 17 and 21 years.
        Oral Surg Oral Med Oral Pathol. 1974; 38: 791-803
        • Soares CJ
        • Martins LR
        • Fonseca RB
        • Correr-Sobrinho L
        • Fernandes Neto AJ
        Influence of cavity preparation design on fracture resistance of posterior Leucite-reinforced ceramic restorations.
        J Prosthet Dent. 2006; 95: 421-429
        • Soares CJ
        • Pizi EC
        • Fonseca RB
        • Martins LR
        Influence of root embedment material and periodontal ligament simulation on fracture resistance tests.
        Braz Oral Res. 2005; 19: 11-16
        • Soares CJ
        • Fonseca RB
        • Gomide HA
        • Correr-Sobrinho L
        Cavity preparation machine for the standardization of in vitro preparations.
        Braz Oral Res. 2008; 22: 281-287