|
21. Root canal cleaning and shaping concepts
M. Khalid Iqbal,
Department of Restorative Dental Sciences, College of Dentistry, King Saud University, P.O. Box 60169, Riyadh 11545, Saudi Arabia.
Throughout the last two decades, great disparities in root canal cleaning and shaping concepts have been a source of much confusion.
The dynamics involved in various root canal cleaning and shaping techniques and instrument innovations will be clarified with the help of computer graphics.
Saudi Dental Journal 1992;4(SI)-Abstr.21:p22.
22. The radiopacity of some endodontic sealer cement
Saud M. Orfali,
Medina Dental Center, King Fahad Hospital, P.O. Box 123, Medina, Saudi Arabia.
The need to identify, localize and evaluate a root filling by radiographic techniques is recognized to be of increasing importance. The radiopacity of ten commercially available materials was investigated. Tests of radiopacity in published specifications (ISO 6876, 1986 & ANSI/ADA No. 57, 1984) stipulate specimen thickness of 1 and 2 mm respectively. It is arguable that the luting role of these materials indicates that their radiopacity in thinner section might be more relevant. Three sizes of specimen were therefore employed, 1.3 mm and 0.5 mm thick discs and a clinical analogue using an artificial root canal in which the test materials was condensed with radiolucent filling cones. Radiographs were taken at 70kV for 16 impulses at a target film distance of 300 mm. These were then measured with a densitometer. The radiopacity values for 1.3 mm discs was 1.95-11.30 mm aluminum equivalent while those for 0.5 mm discs ranged from 1.37 to 3.26 mm aluminum equivalent. The ranking of materials at the two thicknesses was the same.
In the tooth analogue, the radiopacity values ranged from 0.42 to 1.30 mm aluminum equivalent and the ranking of materials differed from that of the thicker specimens. This may be due to the influence of viscosity as it would affect the functional specimen thickness. It is postulated that viscosity should be taken into account when considering the radiopacity of root canal sealing materials.
Saudi Dental Journal 1992;4(SI)-Abstr.22:p23.
23. Innovative methods of root canal obturation
Mahmoud E. EIDeeb,
Department of Restorative Dental Sciences, College of Dentistry, KingSaud University, P.O. Box 60169, Riyadh 11545, Saudi Arabia.
The Washington study on factors affecting success and failure in endodontics has shown that 59.6% of the failures were due to incomplete obturation of the root canal space. The most popular methods of canal obturation utilizes gutta-percha and sealer. Recently developed innovative methods of canal obturation could possibly improve the quality of the obturation, as well as make the obturation process easier and more efficient. Some of these methods include: The ThermafilTM, SuccessfilTM, and the Concentric condensation technique.
In light of the traditional concepts and objectives of root canal obturation, the most recent innovative methods of canal obturation will be discussed. The advantages, disadvantages, common pitfalls, as well as indications and contraindications of each will be emphasized.
Saudi Dental Journal 1992;4(SI)-Abstr.23:p24.
24. Maxillofacial traumatology in kuwait from 1985-1989
Bader E. Al-Mahmeed,
Oral and Maxillofacial Surgery, Ministry of Health, Al-Dasmah, P.O. Box 11214, Kuwait.
This is a first retrospective study of patients with fractures of the facial skeleton treated from 1985 to 1989 at the Dental Center in the State of Kuwait.
The main purpose of this study is to report on the specific development of maxillofacial traumatology in Kuwait.
The patients studied and data were collected according to the following:
Saudi Dental Journal 1992;4(SI)-Abstr.24:p25.
25. Odontogenic tumors - A retrospective study in an arabian population
Nii O. Nartey, H.A. Mosadomi, M. Gailani,
Department of Biomedical Dental Sciences, College of Dentistry, King Saud University, P.O. Box 60169, Riyadh 11545, Saudi Arabia.
Odontogenic tumors diagnosed over a five-year period (1985-1990) in the Division of Oral Pathology at the College of Dentistry, King Saud University were reviewed. The age of the patients ranged from 7 to 47 years with a mean (± SD) age of 24.5 ± 10.6 years. The male to female ratio was 1.8:1. The odontogenic tumors showed marked predilection for the mandible with the exception of the calcifying odontogenic cyst and the odontoma which occurred more in the maxilla. Ameloblastoma (31.7%) was the most common entity. Our findings are compared to the results of other studies reported elsewhere.
Saudi Dental Journal 1992;4(SI)-Abstr.25:p26.
|