<i>Ex vivo</i> fracture resistance of direct resin composite complete crowns with and without posts on maxillary premolars

Fokkinga, W.A.; Bell, Adam; Kreulen, C.M.; Lassila, Lippo; Vallittu, Pekka K.; Creugers, N.H.J.

doi:10.1111/j.1365-2591.2005.00941.x

Cited by 91 publications

(100 citation statements)

References 19 publications

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“…Choosing the best technique and material according to functional demands and determining the amount of remaining tooth structure for optimum strength against fracture are key factors for success. Against this background, different materials and restorative techniques have been proposed in recent years to improve the therapeutic success of teeth with major structural loss [14][15][16][17] . Studies have evaluated the fracture resistance of post-retained direct restorations.…”

Section: Discussionmentioning

confidence: 99%

Fracture resistance of premolars with one remaining cavity wall restored using different techniques

Kıvanç¹,

Alaçam²,

Görgül³

2010

Dent. Mater. J.

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The aim of the study was to compare the fracture resistance of maxillary premolars with one remaining cavity wall restored using different post systems. Forty-eight maxillary premolars were endodontically treated and randomly assigned to four groups for postcore restoration. The first three test groups were restored with polyethylene woven fiber posts, custom-made glass fiber-reinforced composite posts, and titanium posts respectively. In the control Group 4, standardized cavities (3.5×1.5 mm) were prepared in the palatal canal entrance and filled with a resin composite. All the specimens were then restored with a resin composite crown seated on the post. Load was applied with a stainless steel ball (1 mm/min), and the failure modes of all specimens were evaluated. There were no significant differences in fracture resistance and failure mode among the different restorative materials (p>0.05). Within the limitations of this in vitro study, it was concluded that the presence and type of post did not influence the fracture load and failure mode of maxillary premolar teeth with one remaining cavity wall.

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Section: Discussionmentioning

confidence: 99%

Fracture resistance of premolars with one remaining cavity wall restored using different techniques

Kıvanç¹,

Alaçam²,

Görgül³

2010

Dent. Mater. J.

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“…26 On the other hand, in the mouth, repeated loading could lead to fatigue failure, 22 consequently, interpretation of the results should be done cautiously.…”

Section: Troppe and Tronstadmentioning

confidence: 99%

The Effect of Marginal Ridge Thickness on the Fracture Resistance of Endodontically-treated, Composite Restored Maxillary Premolars

Shahrbaf

Mirzakouchaki²,

Oskoui³

et al. 2007

Operative Dentistry

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This study evaluated the effect of varying thicknesses of marginal ridge on the fracture resistance of endodontically-treated maxillary premolars restored with composite.Ninety non-carious maxillary premolars, extracted for orthodontic reasons, were selected for this experimental in vitro study. The teeth were randomly assigned to six groups (n=15). Group 1 received no preparation. In groups 2 through 6, the premolars were root filled and DO preparations were created, while MOD preparations were also created for group 2. The condition of the boxes was: the gingival seat was 1.5 mm above the CEJ and the buccolingual dimensions were 3.5 mm in gingival and 3 mm in occlusal. In groups 3 through 6, the dimensions of the mesial marginal ridge were measured using a digital caliper as follows: 2 mm, 1.5 mm, 1 mm and 0.5 mm, respectively. All samples in groups 2 through 6 were restored with a dentin bonding system (DBS: Single Bond, 3M) and resin composite (Z 250, 3M). Subsequently, premolars from all six groups were subjected to a thermocycling regimen of 500 cycles between 5°C and 55°C water baths. Dwell time was 30 seconds, with a 10-second transfer time between baths.The premolars were submitted to axial compression up to failure at a 45° angle to the palatal Preserving the marginal ridge of endodontically-treated composite restored maxillary premolars can act as a strengthening factor and improve fracture resistance. The mean load necessary to fracture the samples was recorded in newtons (N), and data were subjected to analysis of variance (ANOVA) and LSD post-hoc test.According to these results, the mean loads necessary to fracture the samples in each group were (in N): group 1: 732 ± 239, group 2: 489 ± 149, group 3: 723 ± 147, group 4: 696 ± 118, group 5: 654 ± 183 and group 6: 506 ± 192).Differences between group 1 and groups 2 and 6, and also differences between groups 3, 4 and 5 compared with group 2 and 6 were statistically significant (p<0.05).

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“…Post-kor yapılar uygulanarak restore edilen dişlerde amaç, kök kanalına yerleştirilen postun zayıflamış dişleri güçlendirmek istenmesidir (25). Fakat endodontik tedavi uygulanan dişlerde meydana gelen madde kaybına ek olarak post yerleştirmek için yapılan preperasyonlarda eklendiğinde dişin mekanik direncinin azaldığıda bilinmektedir (26). Bu bilgiler doğrultusunda çalışmamızda hem diş üzerine yapılacak restorasyona tutuculuk sağlamak hem de diş kökünü kırılmalara karşı kuvvetlendirmektir.…”

Section: Discussionunclassified

The Comparison of Fracture Resistance of Different Post Systems Cemented With Different Luting Agents: An In Vitro Study

Yeğin¹,

Eken²,

Eroğlu³

2016

Van Med J

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Ex vivo fracture resistance of direct resin composite complete crowns with and without posts on maxillary premolars

Cited by 91 publications

References 19 publications

Fracture resistance of premolars with one remaining cavity wall restored using different techniques

Fracture resistance of premolars with one remaining cavity wall restored using different techniques

The Effect of Marginal Ridge Thickness on the Fracture Resistance of Endodontically-treated, Composite Restored Maxillary Premolars

The Comparison of Fracture Resistance of Different Post Systems Cemented With Different Luting Agents: An In Vitro Study

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