Banca de QUALIFICAÇÃO: RUANA MARIA DA ROCHA BRANDÃO

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : RUANA MARIA DA ROCHA BRANDÃO
DATE: 10/04/2024
LOCAL: Recife-PE
TITLE:

Weaken roots fracture resistance using milled or personalized  resin reinforced fiber glass post

KEY WORDS:

post and core technique; computer-aided design; dental materials; mechanical test

PAGES: 33
BIG AREA: Ciências da Saúde
AREA: Odontologia
SUMMARY:

The present research aims to evaluate the resistance to compression fracture and the
failure mode of conventional fiberglass cores in weakened root canals compared to cores
milled in CAD-CAM. Thirty human single-rooted premolars, after sectioning the crowns,
will be endodontically treated and after simulating root weakening, they will be randomly
distributed into 3 experimental groups according to the technique and restorative material
to be used (n=10): Group RC ( composite resin core without intraradicular retainer);
Group PF + RC (core in composite resin + customization/individualization of the

prefabricated post with composite resin) and Group PCAD (post and core milled in CAD-
CAM). The test specimens will undergo thermomechanical aging simulating chewing and

evaluation of crack propagation using microcomputed tomography. The specimens will
then undergo a compression fracture resistance test, using a load of 0.5 mm/min in a
universal testing machine. The failure pattern will be evaluated under a stereomicroscope.
Fracture resistance values (N) will be tested for normality using the Kolmogorov Smirnov
test. According to the normality of the data, the test will be chosen for comparisons
between groups.

COMMITTEE MEMBERS:
Interna - 3496161 - JULIANA RAPOSO SOUTO MAIOR COSTA
Externa ao Programa - 2322139 - HILCIA MEZZALIRA TEIXEIRA - UFPEExterna ao Programa - 3377347 - RENATA PEDROSA GUIMARAES - UFPE