Banca de DEFESA: HANIERI GUSTAVO DE OLIVEIRA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : HANIERI GUSTAVO DE OLIVEIRA
DATE: 22/09/2020
TIME: 08:30
LOCAL: PLATAFORMA REMOTA - GOOGLE MEET
TITLE:

INFLUENCE OF THE TYPE OF COMPOSITE AND TIME OF EXPOSURE TO X-RAYS IN THE PRODUCTION OF RADIOGRAPHIC ARTICLES IN A CLASS II RESTORATION MODEL.

KEY WORDS:

Composites resins; Dental digital radiography; Artifacts;

PAGES: 62
BIG AREA: Ciências da Saúde
AREA: Odontologia
SUMMARY:

Objective: To evaluate the effect of the exposure time and the type of composite in the production of radiographic artifact at the tooth / restorative interface. Materials and Methods: In 20 healthy bovine incisors, cavity preparations and class II restorations were made using composite resins Filtek Bulk Fill One (group 1) and Filtek Z350 (group 2). Then, the teeth were exposed to obtain digital radiographs, varying the exposure time by 0.07, 0.10, 0.14, 0.20 and 0.25s. The images were evaluated for investigation of the presence of artifact through the analysis of the modified number of pixels (QPXD) and the average gray value in class II (MGVR) restorations, using the Image J software (National Health Institute). Results: The presence of artifact was observed in all evaluated samples, regardless of the type of restorative material and the exposure time employed. There was no statistically significant difference in QPXD and MGVR between the resins used (ANOVA 2 factors, p p> 0.05). The MGVR analysis indicated that there were no statistically significant differences between resins or between exposure times (p> 0.05). There was a correlation between QPXD and MGVR (r = 0.29) for Filtek Bulk Fill One resin. Conclusion: The presence of altered pixels on dentin in the region of the tooth-restoration interface was identified in all specimens. The variation in the exposure time as well as the type of the restorative composite did not influence the increase or decrease of QPXD and neither in MGVR. However, there was a correlation between QPXD and MGVR for Filtek Bulk Fill One resin. Further research is needed to determine whether QPXD represents a true artifact or misfit of the restorative material or deficiency in the adhesive system application.

BANKING MEMBERS:
Externo à Instituição - VÂNIO SANTOS COSTA - UFAL
Externo ao Programa - 1645492 - ALEX JOSE SOUZA DOS SANTOS
Interno - 2042290 - BONIEK CASTILLO DUTRA BORGES
Externa à Instituição - CONCEIÇÃO APARECIDA DORNELAS MONTEIRO MAIA - UNIFACEX
Interna - 2292784 - ISAUREMI VIEIRA DE ASSUNCAO
Presidente - 2644142 - PATRICIA TEIXEIRA DE OLIVEIRA