The effect of radiotherapy delivery time and obturation materials on the fracture resistance of mandibular premolars

Türker, Sevinç Aktemur; Kaşıkçı, Sena; Ozyurek, Emel; Olcay, Keziban; Elmas, Özlem

doi:10.1007/s00784-020-03378-2

Cited by 3 publications

(3 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among the nonreinforced specimens, there was no difference. This result is in agreement with previous studies that demonstrated that radiation reduces the fracture resistance of teeth 26,27 . It is, however, worth mentioning that these studies used permanent teeth with fully formed roots and closed apexes 26,27 .…”

Section: Discussionsupporting

confidence: 92%

“…This result is in agreement with previous studies that demonstrated that radiation reduces the fracture resistance of teeth. 26,27 It is, however, worth mentioning that these studies used permanent teeth with fully formed roots and closed apexes. 26,27 The present research is the first one to assess the effect of radiation therapy on the fracture resistance of simulated immature teeth submitted to root reinforcement.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of radiation therapy on fracture resistance of simulated immature teeth submitted to root reinforcement

Coelho

Pandolfo

Bortoluzzi

et al. 2023

Int J Paed Dentistry

View full text Add to dashboard Cite

BackgroundThe literature is scanty regarding the effect of radiation therapy (RT) on the mechanical properties of immature permanent teeth.AimTo evaluate the effect of RT on the fracture resistance of simulated immature teeth submitted to different types of root reinforcement.DesignSixty‐four human teeth simulating the Cvek stage 3 of root development were distributed into eight groups (n = 8), according to exposure or not to RT (70 Gy) and the root reinforcement method: Group NR (control)—no reinforcement/no RT; Group NR + RT (control)—no reinforcement/RT; Group PO—tricalcium silicate‐based cement (TS) apical plug/canal obturation/no RT; Group PO + RT—TS apical plug/canal obturation/RT; Group TS—canal filling with TS/no RT; Group TS + RT—canal filling with TS/RT; Group FP—TS apical plug/fibreglass post/no RT; and Group FP + RT—TS apical plug/fibreglass post/RT. Fracture resistance was determined using a universal testing machine (0.5 mm/min).ResultsIn the intergroup comparison, nonirradiated teeth had higher fracture resistance (p < .05). Groups FP and FP + RT had higher fracture resistance (p < .001).ConclusionRadiotherapy affected the fracture resistance of simulated immature teeth. Reinforcement with fibreglass posts increased the fracture resistance, regardless of the radiation.

show abstract

Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Effect of radiation therapy on fracture resistance of simulated immature teeth submitted to root reinforcement

Coelho

Pandolfo

Bortoluzzi

et al. 2023

Int J Paed Dentistry

View full text Add to dashboard Cite

show abstract

“…Studies in which the maximum loads were measured have mostly been conducted to evaluate the bond strengths of restorative materials, and they have reported that radiation treatment diminished the bond strength of resin composite restorations to enamel and dentin 18,27 . Studies assessing the effects of endodontic and restorative materials and the radiation impact on the biomechanical properties of premolars, by measuring the force required to fracture, reported that the maximum load for sound teeth irradiated with a dose of 60 Gy was found to be lower than that of non‐irradiated teeth and no significant difference was observed between the different root filling material groups 26,28 . In the present study, the maximum load for the restored teeth in both crown fracture types was lower than at the 1st fracture.…”

Section: Discussionmentioning

confidence: 99%

Effects of irradiation, restoration and crown fracture type on the maximum load to fracture traumatized incisors: An ex vivo study

Dursun

Şengül

Yılmaz

et al. 2022

Dental Traumatology

View full text Add to dashboard Cite

Background/Aims Radiotherapy makes teeth prone to tooth fractures. However, the relationship between radiotherapy and maximum load to fracture teeth that suffered a crown fracture is not fully understood. The aim of this study was to evaluate the influence of fracture type, radiation dose, fracture time, and their interactions on maximum load to fracture irradiated teeth. Material and Methods A total of 140 permanent incisors were divided into two fracture type groups (uncomplicated and complicated) each of which included seven radiation dose subgroups (0, 10, 20, 30, 40, 50, and 60). The test groups were exposed to high‐energy X‐ray at 2 Gy/day, 5 days/week for a total dose of 10–60 Gy. Control groups were not irradiated. The load where the specimen started to break was obtained two different times. The 1st fracture was performed after radiation therapy, and the 2nd fracture was performed after the restoration of these samples. Results Fracture type had no effect on the maximum load to fracture. In contrast, the maximum load to fracture teeth decreased with increasing radiation doses. Maximum load to fracture the restored teeth was lower than the 1st fracture results. The general linear model procedure revealed a significant interaction between radiation dose and fracture time. Similarly, there was a significant interaction between the fracture type, radiotherapy dose, and fracture time. Maximum load values of teeth with complicated crown fractures restored with fiber posts and composite were not affected by radiation. Conclusion Teeth that have been subjected to radiotherapy have an increased risk of fracture during dental trauma. However, restoration of the irradiated teeth with fiber posts and composite resin did not affect the maximum load required to fracture them.

show abstract

Effect of Radiotherapy and Taper of Root Canal Preparation on the Biomechanical Behavior of Mesial Roots of Mandibular Molars

Pauletto,

Soares,

Baumhardt

et al. 2024

Journal of Endodontics

View full text Add to dashboard Cite

The effect of radiotherapy delivery time and obturation materials on the fracture resistance of mandibular premolars

Cited by 3 publications

References 28 publications

Effect of radiation therapy on fracture resistance of simulated immature teeth submitted to root reinforcement

Effect of radiation therapy on fracture resistance of simulated immature teeth submitted to root reinforcement

Effects of irradiation, restoration and crown fracture type on the maximum load to fracture traumatized incisors: An ex vivo study

Effect of Radiotherapy and Taper of Root Canal Preparation on the Biomechanical Behavior of Mesial Roots of Mandibular Molars

Contact Info

Product

Resources

About