congratulation
The college council congratulates all teaching staffs, college students and college employees for being in the 3rd place of group B in the national university ranking of Kurdistan region. A great accomplishment under the supervision of the head of university  Assistant.Professor .Dr. Dara Miran... More detail
Discussion of Master Student
The Tittle of research is :RELATION OF BODY MASS INDEX WITH DENTAL MATURATION ON (10 - 14) YEARS OLD CHOOL STUDENTS IN ERBIL CITY (CROSS SECTIONAL STUDY) More detail
Discussion of PhD Student
The Tittle of research is : OROFACIAL MANIFESTATION IN β – THALASSEMIA MAJOR PATIENTS(A CLINICAL EVALUATION , BIOCHEMICAL ANALYSIS AND CEPHALOMETRIC ANALYSIS) More detail
Workshop on Erbil Dental Journal
Under the  supervision the dean of the College of Dentistry of Hawler Medical University, the continuous dental education committee in the college held a scientific workshop under tittle of 'Erbil Dental Journal the New Era for Dental Researches' in the Seminar Hall on 9/12/2019. The workshop... More detail
Work shop (saving environment)
On 28/11/2019 as a continuation of the college activities a group of students with Hasar Organization carried out a workshop on saving environment with the attendance group of teachers and vice dean  More detail
Visiting LARA Private School
A team of teaching polyclinics prepared a visit to LARA private school , Seminars have been presented about Oral health and Oral hygiene maintenance for more than 100 pupils, thereafter thankfully toothpastes and mouth gargles have been given to the pupils by (Kin)company. The team consist... More detail
Discussion of Master Student
The Tittle of research is :FLUORIDE RELEASE, RECHARGE AND ANTIBACTERIAL EFFECT OF DIFFERENT ORTHODONTIC ADHESIVE RESINS (AN IN – VITRO STUDY) More detail
Discussion of Master Student
The Tittle of research is :COMPARATIVE EVALUATION OF COMPRESSIVE STRENGTH, PH AND SOLUBILITY OF TRICALCIUM SILICATE – BASED MATERIALS USED FOR PRIMARY TEETH (AN IN VITRO STUDY) More detail
Cleaning and Disinfecting Dental Laboratory in the...
Thanks to dental laboratory technician staff in the prosthodontic department for their initiation in cleaning and disinfecting dental lab, the dean Assistant Prof. Dr. Dara H. Saeed and assistant dean Assistant Prof. Dr. Omar F. Chawshli, was following this activity in cooperation with the head of... More detail
Discussion of Master student
The tittle of research is : Evaluation of mandibular anterior segment by using cone beam computed tomography (CBCT) in a sample of Kurdish people More detail
prev
next

Abstract

The present study was designed to evaluate Propolis collected from five different areas (Shaqulawa, Aski Kalak, Haji Omran, Duhok and Koisinjaque) in Kurdistan region/ Iraq as a new resinous sealer in root canal obturation. The chemical constituents, visual examination and its physical prosperities according to American national standard institute /American Dental Association specification No. 57 for endodontic sealing materials were investigated. Moreover, the new material was implanted in vivo to investigate its effect on soft tissue healing. Dye penetration was also performed to evaluate its effect on apical microleakage.

Outcome of chemical analyses on the ethanolic extract of the Propolis samples revealed the presence of flavonoids and benzophenone in all the samples.

Regarding the physical properties, the melting point was for the Propolis samples   measured depending on American Standard for Testing Materials D-87 test of bee wax. Depending on the results of this test and visual examination, it was decided to use Propolis sample that was collected from Shaqulawa area.

The radiopacity test demonstrates that raw Propolis was radiolucent and   acceptable radiopacity according to the specification No 57 (not less than 3mm aluminum). Accordingly, it was decided to mix with Propolis 20% barium sulfate, eventually adequate radiopacity was obtained. Concerning the solubility and film thickness of the tested material, the samples were within the desirable limits for acceptable endodontic material proposed by American Dental Association.

The biocompatibility of Propolis was also studied.  Eighteen albino rats, of six week old were used to evaluate subcutaneous biocompatibility of the Propolis sample compared with zinc oxide eugenol sealer as a control. The animals were divided into three groups, six rats to be sacrificed at three intervals: three days, seven days and twenty one days after implantation. The histopathological study expressed that Propolis sample was biocompatible with the surrounding tissues.

For detection of the apical dye penetration of the Propolis, sample as endodontic sealer, one hundred and twelve freshly extracted human single-rooted teeth were collected and divided into eight groups of fourteen teeth each. In the first group the teeth were obturated with Thermafil obturators coated with Propolis only without sealer. While obturation of the second group was done with Soft Core obturators coated with Propolis only with out sealer. The third and fourth groups were obturated with Thermafil and Soft Core obturators respectively using Propolis as a sealer after dilution with ethanol. In group five and six, obturation was done with Thermafil and Soft Core obturator using Propolis as a sealer after dilution with eugenol. For the last groups, obturation was performed by using Thermafil and Soft Core obturators respectively with zinc oxide eugenol based sealer, these groups were considered as the control of this study. The obtained results from dye penetration test showed that using Propolis as sealer after dilution with ethanol produce better sealing ability than the other groups.

        In conclusion, it is suggested according to the obtained results in this study that the tested Propolis sample had desirable properties as sealer that fit the requirements of American national standard institute /American Dental Association specification No. 57 for endodontic sealing materials.

College of Dentistry

Main Menu