Fracture resistance of compromised endodontically treated teeth restored with bonded post and cores: An in vitro study

Maroulakos, Georgios; Nagy, William W.; Kontogiorgos, Elias

doi:10.1016/j.prosdent.2015.03.017

Cited by 55 publications

(61 citation statements)

References 35 publications

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“…If a ferrule is not possible (either periodontally or orthodontically), but the patient still prefers to save the tooth, a gold cast could provide a possible alternative (Maroulakos et al . , Sarkis‐Onofre et al . ).…”

Section: New Classificationmentioning

confidence: 99%

A new classification system for the restoration of root filled teeth

Żarow¹,

Ramírez-Sebastià

Paolone

et al. 2017

Int Endodontic J

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The aim of this report is to (i) review the current literature on the status of root filled teeth, (ii) analyse the most important factors in decision-making, (iii) discuss the current restorative concepts, and (iv) classify both the evidence and clinical practice in a way that seeks to be clear, understandable and helpful for clinicians. Restoration of root filled teeth represents a challenge for the clinician and remains a controversial subject. The guidelines describe a new classification that is drawn from evidence presented in the literature and also from clinical expertise-based reviews. It describes five categories of teeth.

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Section: New Classificationmentioning

confidence: 99%

A new classification system for the restoration of root filled teeth

Żarow¹,

Ramírez-Sebastià

Paolone

et al. 2017

Int Endodontic J

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“…Fiber posts are an alternative since they have mechanical properties similar to the dental structure and so generate a more uniform stress distribution to the root, reducing the risk of catastrophic failure. 2,7 Evidence regarding the most adequate type of post to restore pulpless teeth remains controversial and this issue is still a major concern in dentistry. 8 Although several observational studies have evaluated the clinical behavior of intra-radicular retainers, they have inherent methodological limitations that restrict direct clinical applicability.…”

Section: Introductionmentioning

confidence: 99%

Clinical performance and failure modes of pulpless teeth restored with posts: a systematic review

et al. 2017

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The aim of this systematic review was to compare the clinical performance and failure modes of teeth restored with intra-radicular retainers. A search was performed on PubMed/Medline, Central and ClinicalTrials databases for randomized clinical trials comparing clinical behavior and failures of at least two types of retainers. From 341 detected papers, 16 were selected for full-text analysis, of which 9 met the eligibility criteria. A manual search added 2 more studies, totalizing 11 studies that were included in this review. Evaluated retainers were fiber (prefabricated and customized) and metal (prefabricated and cast) posts, and follow-up ranged from 6 months to 10 years. Most studies showed good clinical behavior for evaluated intra-radicular retainers. Reported survival rates varied from 71 to 100% for fiber posts and 50 to 97.1% for metal posts. Studies found no difference in the survival among different metal posts and most studies found no difference between fiber and metal posts. Two studies also showed that remaining dentine height, number of walls and ferrule increased the longevity of the restored teeth. Failures of fiber posts were mainly due to post loss of retention, while metal post failures were mostly related to root fracture, post fracture and crown and/or post loss of retention. In conclusion, metal and fiber posts present similar clinical behavior at short to medium term follow-up. Remaining dental structure and ferrule increase the survival of restored pulpless teeth. Studies with longer follow-up are needed.

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“…The use of identical resin replicas constructed from only one dental element with the same external and intracanal morphology were used to standardize the roots dimensions and ensure specimens uniformity. In addition, although some studies have evaluated the influence of different intraradicular posts on the mechanical behavior of pulpless teeth, most of the post systems used did not present exactly the same form and diameter among the groups as the post characteristics were previously defined by the manufacturers 7,8 , so the whole restorative technique was evaluated and not only the elastic modulus of the intraradicular post. In the current study all posts had the same shape and diameter so that the elastic modulus of the posts was the only factor evaluated.…”

Section: Discussionmentioning

confidence: 99%

“…Although the rigidity of the intracanal anchorage should be taken into consideration since it may influence the mechanical behavior of the restored endodontically treated teeth 6 , most studies which evaluated the fracture strength of teeth restored with different post materials used diverse post systems with varied shapes and diameters 1,7,8 , making it difficult to isolate the variable "post rigidity". For this reason, this study focused on the evaluation of posts with the same format.…”

Section: Introductionmentioning

confidence: 99%

Influence of elastic modulus of intraradicular posts on the fracture load of roots restored with full crowns

Marchionatti

Valli

Wandscher

et al. 2017

Rev. odontol. UNESP

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Objective This study aimed to evaluate the fracture load and displacement of roots restored with posts of different elastic modulus. Material and method Thirty-six replicas of epoxy resin mixed with glass microfibers were made from an endodontically-treated human premolar root prepared to a length of 12 mm with a custom drill, leaving the apical 4 mm unprepared. Replicas were randomly restored with (n = 12): FP-LM (fiber post with low elastic modulus– 50 GPa), FP-HM (fiber post with high elastic modulus – 67 GPa) and MP (metallic post – 208 GPa), using self-curing adhesive and dual resin cement. Cores were built up with composite resin and metallic crowns were cemented in all the roots with self-adhesive resin cement with self-curing mode. Specimens were subjected to a fracture load test (45° inclination/0.5 mm/min) and displacement was registered at 100 N. Result One-way ANOVA showed that elastic modulus of the post did not affect the fracture load means (p = 0.203) (FP-LM: 237.4 ± 65.11 N; FP-HM: 236.7 ± 92.85 N; MP: 295.8 ± 108.7 N) but was statistically significant for the displacement (p < 0.00): Tukey’s test showed that FP-LM displacement mean (0.81 ± 0.15 mm) was significantly higher than those for FP-HM (0.46 ± 0.26 mm; p = 0.00) and MP (0.62 ± 0.07 mm; p = 0.04). Conclusion Posts with different elastic modulus exhibit similar fracture loads, but a lower displacement is achieved when fiber posts with a high elastic modulus and metallic posts are used.

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Fracture resistance of compromised endodontically treated teeth restored with bonded post and cores: An in vitro study

Cited by 55 publications

References 35 publications

A new classification system for the restoration of root filled teeth

A new classification system for the restoration of root filled teeth

Clinical performance and failure modes of pulpless teeth restored with posts: a systematic review

Influence of elastic modulus of intraradicular posts on the fracture load of roots restored with full crowns

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