Fracture resistance of pulpotomized and composite-restored primary molars: Incremental versus bulk-fill techniques

Ghajari, Masoud Fallahinejad; Ghasemi, Amir; Moradi, Arash; Sanjari, Khashayar

doi:10.4103/1735-3327.302889

Cited by 3 publications

(6 citation statements)

References 10 publications

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“…Despite the high fracture resistance values of groups B and C (biomimetic structure) than that of group D (bilayered structure), they were still lower than that of group A (intact structure). Number (N) and percentage (%) of fracture patterns in each group is shown in table (2). Majority of fracture pattern was minimal tooth fracture in group A (intact structure), fracture of buccal or lingual cusps but intact restoration in groups B and C (biomimetic structure), and fracture of less than buccal or lingual one-half of crown in group D (bilayered structure).…”

Section: Resultsmentioning

confidence: 99%

“…Pulpotomized molars have significant loss of natural dental structures due to caries removal and deroofing procedure of pulp chamber which compromise their structural integrity and predispose them to fracture under occlusal forces (1,2) . In addition, long unsupported walls of pulpotomized teeth may be responsible for their compromised strength and fracture susceptibility (3) .…”

Section: Introductionmentioning

confidence: 99%

“…With increasing parental demands of esthetics for their children, the use of aesthetic restorations with optimum fracture strength for pulpotomized teeth had been mentioned in literature (1,6) . Some studies addressed direct composite restoration as alternative esthetic option for pulpotomized teeth instead of traditional SSC (2,3,8,9) . However, polymerization shrinkage, major shortcoming of composite resins, leads to higher stress concertation on tooth instead of restoration and causes unrestorable tooth fracture (10) .…”

Section: Introductionmentioning

confidence: 99%

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Fracture behaviour of directly restored pulpotomized primary molars with biomimetic versus conventional bilayered structure; An in-vitro study.

El Agamy

2024

Egyptian Dental Journal

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Objectives:The aim was to evaluate fracture behaviour of directly restored pulpotomized primary molars with two biomimetic and one bilayered structures. Besides, impact of these structures to restore strength of sound molars was evaluated Materials and Methods: Fifteen sound and forty-five carious extracted second primary molars were selected to be used in this study. The 15 sound molars were left intact without any preparation as Group A (Intact structure). While standardized access cavity preparation and pulpotomy procedures were performed on 45 carious molars. The pulpotomized molars were divided randomly and equally (n= 15) according to final composite restoration structure into Group B (everX Posterior + G -aenial Posterior) and Group C (everX flow + G -aenial Posterior) as biomimetic structure and Group D (Filtek Bulk Fill Flow + Filtek Z250 XT) as conventional bilayered structure. Each composite resin and its adhesive were applied with strict adherence to manufacture instructions. After thermocycling , each molar was tested for fracture resistance using instron testing machine at 0.5 mm/ min crosshead speed with 4.5 mm rounded end metallic cone. The compressive force inducing fracture in each specimen was recorded in Newton(N) and the fracture pattern was examined visually with aid of magnifying lens. Statistical analysis was done using ANOVA and post-hoc tests at 5% of significance.Results: Mean fracture resistance value of group A (intact structure) was highly statistically significant than that for groups B and C (biomimetic structures) or group D (bilayered structure) (p<0.05). Despite the high fracture resistance values of biomimetic structure groups (groups B and C) than that of bilayered structure group (group D), no statistically significant difference was found on comparison between them (p>0.05). Majority of fracture pattern in intact group was type I, while majority in biomimetic groups and bilayered group was types II and III respectively.Conclusions: Biomimetic restoration showed most favorable outcomes for pulpotomized molars regarding strength and fracture pattern.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fracture behaviour of directly restored pulpotomized primary molars with biomimetic versus conventional bilayered structure; An in-vitro study.

El Agamy

2024

Egyptian Dental Journal

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“…Reviewing the pediatric dentistry literature, it is clear there are few studies evaluating the fracture resistance of pulpotomy teeth [13,17,18]. Moreover, there is no study evaluating the effect of base (intraori ce barrier) materials on the fracture resistance of pulpotomized teeth.…”

Section: Discussionmentioning

confidence: 99%

“…Based on the data of Ghajari et al [13], the power calculation results revealed that the sample size for each group should be a minimum of 15 (power 0.90, effect size = 0.862, and signi cance level a = 0.05). A total of 75 teeth were used in the study.…”

Section: Ethical Approval and Sample Size Calculationmentioning

confidence: 99%

Fracture Resistance of Primary Molars After Pulpotomy Procedure Using Mineral Trioxide Aggregate or Biodentine

Topçuoğlu

2023

Preprint

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Objectives The aim of this study was to examine the effect of different tricalcium silicate materials on the fracture resistance of pulpotomized primary molar teeth with class II mesio-occluso-distal cavities. Materials and Methods Seventy-five extracted mandibular primary molars were used in this study. The teeth were randomly divided into 5 groups (n = 15 for each group). In group 1, the teeth were left unprepared and unfilled (negative control); in group 2, pulpotomy cavities were performed, but left unfilled (positive control); in Group 3, mineral trioxide aggregate (MTA) and glass ionomer cement (GIC) was applied; in Group 4, Biodentin and GIC; and in Group 5, zinc oxide eugenol paste and GIC was placed in the pulp chamber. Then, cavities were restored with composite filling material. The teeth in all groups were subjected to thermocycling for 5000 cycles at 5°C–55°C. Each specimen was then subjected to fracture testing using a universal testing machine. The force required to fracture each specimen was recorded, and the data were analyzed statistically. Results Fracture resistance values obtained were as follows: Group1 > Group 4 > Group 3 = Group 5 > Group 2, (p < 0.05). The most common type of fracture was restorable in all experimental groups (p < 0.05). Conclusion Biodentine can be used as a suitable base material against fracture in teeth undergoing pulpotomy. Clinical Relevance The type of the base material used during the pulpotomy procedure may affect the fracture resistance of primary molar teeth.

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Low and high viscosity bulk-fill composite resins stress distribution in primary molar tooth inlay cavity

Güler

2023

Computer Methods in Biomechanics and Biomedical Engineering

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Fracture resistance of pulpotomized and composite-restored primary molars: Incremental versus bulk-fill techniques

Cited by 3 publications

References 10 publications

Fracture behaviour of directly restored pulpotomized primary molars with biomimetic versus conventional bilayered structure; An in-vitro study.

Fracture behaviour of directly restored pulpotomized primary molars with biomimetic versus conventional bilayered structure; An in-vitro study.

Fracture Resistance of Primary Molars After Pulpotomy Procedure Using Mineral Trioxide Aggregate or Biodentine

Low and high viscosity bulk-fill composite resins stress distribution in primary molar tooth inlay cavity

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