Influence of endodontic post type (glass fiber, quartz fiber or gold) and luting material on push-out bond strength to dentin in vitro

Kremeier, Karin; Fasen, Lutz; Klaiber, B; Hofmann, Norbert

doi:10.1016/j.dental.2007.06.029

Cited by 92 publications

(100 citation statements)

References 37 publications

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“…Pasivna retencija kolčića povećava se kada je dobro prilagođen prostoru unutar prepariranog kanala i ako je cementni sloj tanak i ravnomjeran (17,18). Tanak, ravnomjeran sloj cementa koji okružuje individualnu nadogradnju pomaže ograničiti koncentraciju naprezanja u korijenskom kanalu.…”

Section: Methodsunclassified

“…Takvo produljeno propuštanje uzrokovat će odcementiranje kolčića i na kraju će potaknuti uobičajene poteškoće koje se pojavljuju s nadogradnjama. Oralne tekućine, bakterijski toksini i sve vrste iona koji prodiru kroz sučelje restauracije i zuba mogu dovesti do rubne diskoloracije (13), sekundarnog karijesa i rubne pukotine (14 -16).Pasivna retencija kolčića povećava se kada je dobro prilagođen prostoru unutar prepariranog kanala i ako je cementni sloj tanak i ravnomjeran (17,18). Tanak, ravnomjeran sloj cementa koji okružuje individualnu nadogradnju pomaže ograničiti koncentraciju naprezanja u korijenskom kanalu.…”

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“…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.…”

mentioning

confidence: 99%

“…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.…”

mentioning

confidence: 99%

See 3 more Smart Citations

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: Methodsunclassified

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confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

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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“…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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Push-out bond strength of circular and oval-shaped fiber posts

et al. 2010

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This study aimed at evaluating the post-root dentin push-out bond strength of circular and oval posts luted in oval-shaped canals with two different resin cements. Twenty extracted premolars with oval-shaped canals were selected, endodontically instrumented and obturated. The teeth were divided into two groups according to the drill used for post-space preparation and to the post shape (Ellipson oval tip + post and MTwoPF + DT Light-Post). Each group was then subdivided into two subgroups according to the cement (Gradia Core and Corecem Automix). The post-dentin bond strength was evaluated with the thin-slice push-out test. The bonded surface area was calculated for each post shape with an appropriate geometric formula in order to express the retentive strength in megapascal. Push-out strength data were analyzed with the Kruskal-Wallis ANOVA. The results showed that neither the drill-post system nor the cement significantly affected the push-out strength. The means (SD) of the push-out bond strengths in the experimental subgroups were the following: 11.79 MPa (4.77) for Gradia Core/Ellipson tip and post, 13.36 MPa (5.16) for Gradia Core/MtwoPF and DT Light-Post, 11.18 MPa (2.58) for Corecem Automix/Ellipson tip and post, and 10.91 MPa (3.89) for Corecem Automix/MtwoPF and DT Light-Post. In conclusion, circular and oval posts achieved similar retentive strengths in oval canals.

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Influence of endodontic post type (glass fiber, quartz fiber or gold) and luting material on push-out bond strength to dentin in vitro

Cited by 92 publications

References 37 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

Seal capability of interim post and core crown with temporary cements

Push-out bond strength of circular and oval-shaped fiber posts

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