Effect of radiation therapy on fracture resistance of simulated immature teeth submitted to root reinforcement.
Int J Paediatr Dent
; 34(1): 3-10, 2024 Jan.
Article
in En
| MEDLINE
| ID: mdl-37038703
ABSTRACT
BACKGROUND:
The literature is scanty regarding the effect of radiation therapy (RT) on the mechanical properties of immature permanent teeth.AIM:
To evaluate the effect of RT on the fracture resistance of simulated immature teeth submitted to different types of root reinforcement.DESIGN:
Sixty-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 reinforcementmethod:
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).RESULTS:
In the intergroup comparison, nonirradiated teeth had higher fracture resistance (p < .05). Groups FP and FP + RT had higher fracture resistance (p < .001).CONCLUSION:
Radiotherapy affected the fracture resistance of simulated immature teeth. Reinforcement with fibreglass posts increased the fracture resistance, regardless of the radiation.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Root Canal Filling Materials
/
Tooth Fractures
Limits:
Humans
Language:
En
Journal:
Int J Paediatr Dent
Journal subject:
ODONTOLOGIA
/
PEDIATRIA
Year:
2024
Type:
Article
Affiliation country:
Brazil