Are dentin posts biomechanically intensive?: A laboratory and FEA study

Bellí, Sema; Çelik, Kezban; Akbulut, Makbule Bilge; Güneşer, Mehmet Burak; Eraslan, Oğuz; Eskitaçcıoğlu, Gürcan

doi:10.1080/01694243.2014.966895

Cited by 6 publications

(9 citation statements)

References 37 publications

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“…Although it is difficult to simulate the periodontal ligament perfectly, applying a force parallel to the teeth's long axis could reflect the clinical conditions more than other experimental methods. [23] This may be one of the limitations of this type of experiments.…”

Section: Discussionmentioning

confidence: 98%

Fracture resistance of roots obturated with a novel calcium silicate-based endodontic sealer (BioRoot RCS)

Güneşer

Akman

Kolcu

et al. 2016

Journal of Adhesion Science and Technology

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Fracture resistance of roots obturated with a novel calcium silicate-based endodontic sealer (ABSTRACT The aim of this ex vivo study was to evaluate the vertical-fracture resistance of roots obturated with a newly developed tricalcium silicate cement (BioRoot RCS; Septodont, Saint Maur Des Fosses, France) using cold lateral compaction technique (LC) or matchedtaper single-cone gutta-percha technique (SC). Decoronated 82 single-rooted mandibular premolars were chemo-mechanically prepared and then randomly divided into 6 experimental groups (n = 12) and 2 control groups (n = 5): Group 1 iRoot SP-LC; Group 2 iRoot SP-SC; Group 3 MTA Fillapex-LC; Group 4 MTA Fillapex-SC; Group 5 BioRoot RCS-LC and Group 6 BioRoot RCS-SC. In the positive-control group, roots were instrumented but not filled, and in the negativecontrol group, roots were neither instrumented nor filled. All samples were incubated for two weeks and then subjected to vertical loading force (1 mm/min) until fracture. The force required to fracture each specimen were determined, and the data were statistically analyzed. The highest significant fracture resistance was recorded for the iRoot SP-LC, iRoot SP-SC, BioRoot RCS-LC, and BioRoot RCS-SC groups, with no significant difference among them (p > 0.05) when compared with the positive-control group (p < 0.05), whereas the lowest significant values were observed in the MTA Fillapex-LC and MTA Fillapex-SC groups (p < 0.05). The vertical fracture resistance of roots obturated with BioRoot RCS and iRoot SP sealers using either LC or SC technique was found to be similar to that of intact teeth. BioRoot RCS, newly developed tricalcium silicate cement, might have the potential to reinforce the instrumented teeth against vertical root fracture.

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Section: Discussionmentioning

confidence: 98%

Fracture resistance of roots obturated with a novel calcium silicate-based endodontic sealer (BioRoot RCS)

Güneşer

Akman

Kolcu

et al. 2016

Journal of Adhesion Science and Technology

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“…The purpose of this study was to examine the possible destructive effects of CH and CHX gel on human root dentin, and the remaining cavity wall levels on the fracture strength of endodontically treated teeth. It is evident from previous studies that the conservation of the tooth structure in the cervical area and a higher number of remaining cavity walls increased the tooth strength [16,17]. Higher strength values were expected when the palatinal cavity wall remained.…”

Section: Discussionmentioning

confidence: 93%

Effects of intracanal medicaments and the remaining cavity wall on fracture strength of endodontically treated molars

Olcay

Coban²,

Bellí

2018

BDS

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Objective: The aim of this study was to investigate the effects of the short-term intracanal application of two medicaments on the fracture strength of root-filled molar teeth with different levels of tooth structure loss. Material and Methods: Standard access cavities of totally 84 intact maxillary molar teeth were prepared in 72 teeth and were divided into 3 main groups. Standard access cavities were kept in the first group, while mesio-occlusal-distal cavities (MOD) were prepared in the second and third groups. One-half of the palatinal walls were removed in the third group. Twelve sound teeth were used in the fourth group as control. Each group was then assigned into two subgroups according to the medicament used (n=12): 2% chlorhexidine gel and calcium hydroxide. Samples were stored at 37°C and 100% humidity for 1 week. Then the teeth were inserted into a universal testing machine and vertically loaded (5 mm/min) from the occlusal surface. The data was recorded in Newtons and statistically evaluated using a Univariate ANOVA and a Tukey as post hoc test. Results: A significant difference was found among the test groups (p<0.01). No significant difference was found according to the medicament used (p>0.05), however the number of remaining walls significantly affected the fracture strength (p<0.01). The first group with access cavity showed mostly repairable fractures (60%–80%) whereas the others showed mostly non-repairable fracture patterns (60%–90%). Conclusion: In conclusion, the fracture strength of endodontically treated teeth is related to the structure loss rather than the intracanal medicament used. KeywordsEndodontically treated teeth; Fracture strength; Intracanal medicament; Remaining cavity wall; Root facture.

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“…To perfectly simulate the periodontal ligament, it is still difficult to apply a force parallel to the long axis of the tooth for proper simulation of the clinical situation. 14 This is one of the limitations of such experiments.…”

Section: Discussionmentioning

confidence: 99%

Fracture resistance of roots enlarged with various rotary systems and filled with various sealers

Yusufoğlu

Akman

Akbulut

et al. 2019

J Dent Res Dent Clin Dent Prospects

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Background. This in vitro study compared the fracture resistance of roots instrumented either with ProTaper or One Shape rotary systems and filled with one of the silicate, epoxy resin or silicone-based sealers. Methods. Sixty single-rooted extracted mandibular premolars were decoronated to a length of 13 mm and then randomly divided into two main groups (n=30) in terms of the rotary system used for preparation. Group 1 samples were instrumented with the ProTaper Universal system up to a master apical file of #F2, while samples in group 2 were enlarged with One Shape system. The two main groups were then divided into 3 subgroups in terms of the sealer used (n=10) and filled with guttapercha (either F2 or MM-GP points) of the rotary system used and one of the sealers as follows: group 1, BioRoot RCS + ProTaper F2 gutta-percha; group 2, AH Plus + ProTaper F2 gutta-percha; group 3, GuttaFlow + ProTaper F2 gutta-percha; group 4, BioRoot RCS+ MM-GP points; group 5, AH Plus + MM-GP points; and group 6, GuttaFlow + MM-GP points. Each specimen then underwent fracture testing by using a universal testing machine at a crosshead speed of 1.0 mm/min until the root fractured. Data were statistically analyzed. Results. Two-way ANOVA showed no significant differences between the groups. One Shape instruments showed significantly better fracture resistance compared to ProTaper instruments. Statistically, no significant difference was found between AHPlus, GuttaFlow and BioRoot RCS sealers. Conclusion. It can be concluded that the rotary system used for the instrumentation of teeth has some influence on the fracture resistance, while the root canal sealers do not have such an effect.

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Are dentin posts biomechanically intensive?: A laboratory and FEA study

Cited by 6 publications

References 37 publications

Fracture resistance of roots obturated with a novel calcium silicate-based endodontic sealer (BioRoot RCS)

Fracture resistance of roots obturated with a novel calcium silicate-based endodontic sealer (BioRoot RCS)

Effects of intracanal medicaments and the remaining cavity wall on fracture strength of endodontically treated molars

Fracture resistance of roots enlarged with various rotary systems and filled with various sealers

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