Survival time of cast post and cores: A 10-year retrospective study

Balkenhol, Markus; Wöstmann, Bernd; Rein, Christian; Ferger, P

doi:10.1016/j.jdent.2006.04.004

Cited by 97 publications

(96 citation statements)

References 28 publications

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“…The most common types of post-retained restoration failures are caries, endodontic failures, periodontal disease, root fractures, post dislodgements, post-and-core separations and crown-core separations (4)(5)(6)(7). These failures depend on a number of factors in the post preparation step that includes post design and cement or luting agent (8).…”

Section: Introductionmentioning

confidence: 99%

Intracanal Adaptation of a Fiber Reinforced Post System as Compared to a Cast Post-and-Core

Muttlib¹,

Azman²,

Seng³

et al. 2016

Acta Stomatol Croat

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Ključne riječi liječenje korijenskog kanala; rubno prijanjanje materijala za punjenje; tehnika kolčića i nadogradnje; vlaknima ojačani polimeri www.ascro.hr Prilagodba dvaju različitih sustava intrakanalnih kolčića Muttlib i sur. 330within the root canal, making the tooth more susceptible to fracture (10,11). This increases the stress within the root and increases the chances of failure. A poorly adapted post will create a marginal gap in which the presence of insufficient cementation can lead to microleakage (12). The prolonged leakage will cause the separation of the post from the root canal and eventually lead to common failures of the post-core systems. Oral fluids, bacterial toxins and all kinds of ions that penetrate through the interfacial space between the restoration and the tooth may lead to marginal discoloration (13), secondary caries and marginal fracture (14)(15)(16).A post's passive retention is improved when it adapts properly into the prepared post space and if the luting agent is thin and even (17,18). A thin layer of cement instead of the different amount of luting agents surrounding the customized post helps to limit stress concentration in the root canal. A study by Kremeier et al. (18) demonstrated that thicker layers of luting agent increase the risk of shrinkage strain, resulting in reduced bond strength by creating more stress during polymerization. Thicker cement found between the post and the canal could lead to displacement of the post (11,19). The cement-dentine interface is the site at which decementation generally occurs due to the bubbles and pores that form due to curing stress (20,21). Therefore, a well-adapted post that fits the root canal shape can reduce the risk of debonding which is subsequently leading to failure of the post (19).When a post does not adapt well, a gap or space will be created in the canal which will become a harboring place for bacterial infection. Despite having a good apical seal from the remaining gutta-percha, bacteria from the coronal portion can spread through it. It may take only a few days for bacteria to pass the apical 3-5mm of apical root canal filling (22). Little is known about the intra-canal adaptation of the fiber reinforced composite (FRC) post systems. Therefore, the aim of this study was to investigate the adaptation of cast post-and-core (CPC) and FRC post system inside the root canal. In addition, the CPC's adaptation quality will be compared with the FRC's adaptation quality. Materials and methodsThis was an experimental study based on in-vitro procedures. It was performed in the Craniofacial Laboratory of School of Dental Sciences, Health Campus, Universiti Sains Malaysia.PS software (Dupont and Plummer, 1997) was used to calculate the sample size with standard deviation (σ) which is assumed to be 7.4 (23) of the mean gamma count with 80% power and alpha 0.05. Fifteen samples were needed for this study. Having anticipated possible problems with 10% of samples during the procedure, total samples of 17 were prepared for this study.Sev...

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Section: Introductionmentioning

confidence: 99%

Intracanal Adaptation of a Fiber Reinforced Post System as Compared to a Cast Post-and-Core

Muttlib¹,

Azman²,

Seng³

et al. 2016

Acta Stomatol Croat

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“…It was shown that the mold filling capability of Ag-Zn-Sn-In alloy is superior to that of silver-palladium-coppergold alloy (Ag-Pd-Cu-Au alloy) with a conventional centrifugal casting machine 7) . However, there have been clinical failures; the most common cause of failure has been loss of retention of the post and core from the root due to deficiencies in bonding at the metal-cement interface 8,9) . Posts and cores fabricated from semiprecious alloy had a higher risk of failure of posts and cores than high-gold-content alloys 9) .…”

Section: Introductionmentioning

confidence: 99%

“…However, there have been clinical failures; the most common cause of failure has been loss of retention of the post and core from the root due to deficiencies in bonding at the metal-cement interface 8,9) . Posts and cores fabricated from semiprecious alloy had a higher risk of failure of posts and cores than high-gold-content alloys 9) . Therefore, the bonding between alloys and luting cement plays an important role in the longevity of the prosthesis [10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the bonding between alloys and luting cement plays an important role in the longevity of the prosthesis [10][11][12] . Deficiencies in bonding at the metal-resin interface can became a significant clinical problem from not only loss of retention but also from microleakage, secondary caries and tooth fracture, which could ultimately lead to periapical pathosis 6,[8][9][10][11][13][14][15] . Increasing microleakage from debonding causes bacterial contamination through the tooth-crown interface after restoring the tooth.…”

Section: Introductionmentioning

confidence: 99%

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Effect of three metal priming agents on the bond strength of adhesive resin cement to Ag-Zn-Sn-In alloy and component metals

et al. 2018

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The aim of this study was to investigate the effect of three metal priming agents on the bond strength of adhesive resin cement to Silver-Zinc-Tin-Indium (Ag-Zn-Sn-In) alloy and pure Ag, Zn, Sn, and In. The specimens were air-abraded with alumina and then primed with one of three metal priming agents: V-Primer, Estenia Opaque Primer, or Alloy Primer. The metal disks were bonded with adhesive resin cement (Super-Bond Bulk-mix technique). Shear bond strengths (n=10/group) were determined before and after 50,000 thermocycles for Ag-Zn-Sn-In alloy as well as after 5,000 thermocycles for pure Ag, Zn, Sn and In. For Ag-Zn-Sn-In alloy, the post-thermocycling bond strength of the Alloy Primer group was significantly higher than that of the other primers. It can be concluded that Alloy Primer containing both the vinyl-thione monomer (VBATDT) and hydrophobic phosphate monomer (MDP) is effective for bonding Ag-Zn-Sn-In alloy and pure Ag, Zn and Sn.

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“…3,4 Delay in placing a restoration, fracture of a restoration, post space preparation, or restoration failure are some of the causes for loss of coronal seal after endodontic therapy. 5 Custom made posts remain an integral component of the prosthodontics treatment, [6][7][8] especially when extensive loss of coronal tooth structure is found, and the classic extracoronal ferrule effect is suitable to improve the structural integrity of the pulpless tooth. 9 When such a restoration is used, an interim post and core crown is required while the definitive restoration is being constructed.…”

Section: Introductionmentioning

confidence: 99%

Seal capability of interim post and core crown with temporary cements

et al. 2010

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The purpose of the present study was to evaluate the in vitro seal capability of interim post and core crown restorations. Eighty teeth were selected and divided into 8 groups. Four experimental groups received interim posts and core crowns. Half of each group was decoronated at the cementum-enamel junction, groups PCCH and PCZO. The other half was sectioned 2 mm coronal to the cementum-enamel junction, groups PCrZO and PCrCH. The interim post and core crowns were luted with Rely X Temp NE, groups PCrZO and PCZO; Hydro C was used for Groups PCrCH and PCCH. The control groups, PC and PCr, received uncoated post and core crowns; groups OTg and OT were left without interim post and core crowns and were totally open. Infiltration was accessed by dye exposure followed by demineralization of the teeth. The length of the infiltration was measured using digital images taken from the specimens. The images were inserted into the Image Tool 3.0 software. Kruskal-Wallis analysis of variance and Dunn's multiple comparison method were used to test for significant differences among test groups (P < .05). Groups PCrZO and PCrCH showed the least dye penetration, followed by groups PCZO and PCCH. Teeth restored with interim post and core crowns will be subject to leakage. Ethics Committee: 095/2008.

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Survival time of cast post and cores: A 10-year retrospective study

Cited by 97 publications

References 28 publications

Intracanal Adaptation of a Fiber Reinforced Post System as Compared to a Cast Post-and-Core

Intracanal Adaptation of a Fiber Reinforced Post System as Compared to a Cast Post-and-Core

Effect of three metal priming agents on the bond strength of adhesive resin cement to Ag-Zn-Sn-In alloy and component metals

Seal capability of interim post and core crown with temporary cements

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