dental-medicine-2016_posters-accepted-abstracts

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Volume 4, Issue 3 (Suppl) J Oral Hyg Health
ISSN: 2332-0702 JOHH, an open access journal
Page 52
Notes:
Dental Medicine 2016
August 08-10, 2016
conferenceseries.com
August 08-10, 2016 Toronto, Canada
13th International Conference and Exhibition on
Dental Medicine
One-session root canal treatment with aPDT: Evaluation in dog’s teeth with apical periodontitis
Lidia Regina da Costa Hidalgo, Lea Assed Bezerra da Silva, Paulo Nelson-Filho, Raquel Assed Bezerra da Silva, Marilia Pacífico Lucisano and Arthur Belem
Novaes Jr.
University of Sao Paulo, Brazil
Aim: To evaluate one-session endodontic treatment with aPDT and two-session treatment with calcium-hydroxide (CH)-based
dressing in dog’s teeth with apical periodontitis.
Method: After experimental induction of apical periodontitis, 48 teeth were randomly assigned to the following groups: Group I (one-
session treatment with aPDT 120 days); Group II (one-session treatment with aPDT 180 days); Group III (two-session treatment with
CH-based dressing 120 days) and Group IV (two-session treatment with CH-based dressing 180 days). The animals were euthanized
after 120 and 180 days. After histotechnical processing, microscopic and radiographic analyses were performed. Data were analyzed
by Kruskal-Wallis and Fisher’s exact tests (α=0.05).
Result: Groups III and IV presented repaired, resorbed and cemental areas with collagen bundles and few inflammatory cells. In
Groups I and II, the areas of cemental resorption were not repaired with reduced presence of cells and fibers. In the analysis of the
apical closure, fluorescence microscopy and percentage of radiographic reduction of lesions, there was significant difference between
Group I and III and between II and IV (p<0.05). Groups I and II had weak RANKL expression and positive immunostaining for
RANK and OPG. In III, there was positive immunostaining for RANKL. In IV, the three osteoclastogenesis markers were expressed.
Conclusion: The results using aPDT were worse than those obtained with two-session endodontic treatment using a CH-based
dressing in teeth with apical periodontitis.
Biography
Lidia Regina da Costa Hidalgo is a Dentist graduated at University Estadual Paulista, School of Dentistry of Araçatuba, Brazil in 2009. He has completed his Master’s
degree in Preventive Dentistry and Social Dentistry in 2012 and PhD from Universidade de São Paulo in Pediatric Dentistry, School of Dentistry in Ribeirão Preto,
Brazil working on basic research and clinical areas.
Lidia Regina da Costa Hidalgo et al., J Oral Hyg Health 2016, 4:3 (Suppl)