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 54
Notes:
Dental Medicine 2016
August 08-10, 2016
conferenceseries.com
August 08-10, 2016 Toronto, Canada
13th International Conference and Exhibition on
Dental Medicine
The comparative study of five different calcium hydroxide residues in root canal after final canal
preparation using ProTaper rotary system and NaOCl 2.5%
Sogol Amiri
Iran
Introduction: There is a high possibility that intracanal medication used for multiple-visit treatment, remains in root canal even after
incorporating different endodontic instruments and chemical substances for removing it, prior to obturation.
Aims: Our study aims to evaluate the residues of five different calcium hydroxides which are presumed to be eliminated completely
after final root canal preparation with ProTaper rotary files and NaOCl 2.5%, in identically prepared single-rooted teeth, using
stereomicroscope.
Material &Methods: 81 single-rooted straight and intact human teeth, consisting of 17maxillary central incisors, 17maxillary canines
and 47 maxillary premolars, were decrownated from 15 mm to anatomic apex and randomly divided into 5 groups of each with 3
incisors, 3 canines and 9 premolars. 5 positive and 1 negative controls were prepared. All teeth were prepared with rotary ProTaper
files up to MAF=F2 down to the anatomic apex and with NaOCl 2.5% multiple irrigations according to ISO use instruction. Groups
were filled with calcium hydroxide to full length as follow: Metapex (META BIOMED Co/Korea), Meta paste (META BIOMED Co/
Korea), Golchai (Golchai Co/Iran) powder/liquid type, mixed 3/1 with distilled water, Calcipex II (Nippon Shika Yakuhin Co/Japan)
and Endo-Cal (Morvabon Trading Co/Iran) Calcium hydroxides in all groups were applied with identical tips and for powder type,
it was introduced into the canal with S-file 25 and pushed into the canal with endodontic plugger then all roots were covered by cavit
temporary filling material and incubated in 37 °C and 100% humidity for a week. Afterward cavit was removed and each tooth was
filed up to file size F3 with ProTaper system down to the anatomic apex, meanwhile NaOCl 2.5% was used for multiple irrigations
according to ISO instruction, then all teeth were spitted using a 0.13 mm Disc on a continues hand-piece by making longitudinal
grooves on both sides of each tooth and then splitting them into two equal pieces using a metal spatula. All specimens were magnified
40x and observed under stereomicroscope. Calcium hydroxide residues were analyzed quantitatively by means of a grid, with results
expressed in percentage of canal walls covered by debris. Tucky statistical test was considered to be used if needed.
Results: In all groups (1-5) there were amounts of remaining calcium hydroxide. More than 60% of calcium hydroxide was still on
canal walls all along root canal to the anatomical apex. There was no significant difference among similar teeth in all groups (P<0.9).
Conclusion: There is no significant difference between different types of calcium hydroxide, whether they are powder /liquid type
(Golchai) or paste form (other groups) and whether they are oil based (Metapex) or water-based (other groups) and whether they are
pure (Golchai and Endocal) or there are other ingredients such as iodoform (Metapex) or barium sulfate (Metapaste and Calcipex II)
as additives, when comparing for residues after chemomechanical removal from root canals prior to obturation.
Biography
Sogol Amiri has completed her DDS from Dental Faculty, Shahed University, Iran. She is currently working and learning in private dental office of Professor Dr. Hassan
Semiyari. She has worked both in endodontic and periodontic fields.
Sogol Amiri, J Oral Hyg Health 2016, 4:3 (Suppl)