Knowledge Evaluation of Routine Fixed Prosthodontic Procedures used in Construction of Fixed Dental Prostheses among Dental Laboratories in Aljabal Alakhdar Region, libya.

Abstract

Background: The use of suitable laboratory techniques and dental materials that are necessary during the manufacturing of that prosthesis will determine if fixed dental prostheses (FDPs) are successful when supplied to patients. Inadequate fabrication process may have an impact on the longevity in addition to the fit or aesthetic effects. To ensure high-quality work, dental laboratories should routinely review each other's understanding of dental materials and fundamental laboratory techniques. With the aid of a validated questionnaire, this survey was carried out to determine the level of knowledge among laboratory technicians regarding the frequently used laboratory techniques and materials for fabrication of FDPs in dental laboratories in the Aljabal Alakhdar region. Methods: A survey was conducted with the help of a validated questionnaire that was circulated to 21 laboratories in Aljabal Alakhdar region. The feedback was gathered from laboratory technicians and was then statistically analyzed to achieve the objectives of the study. Results: 100 % of laboratories confirmed that technicians working for them were registered under the ministry of health . 95.2% agreed that they only used dental materials that were American Dental Association (ADA) specified. The most common gypsum product for pouring of impressions was dental stone. 100% of the technicians agreed that they inspected the cast before starting the fabrication procedure. Die preparation and ditching procedure was done by 80.9% and 90.5% laboratories respectively. Only 33.3% agreed of using beryllium free alloy ingots, in 100% laboratories, ceramic work was carried out in a separate ceramic room with 100% having adequate ventilation provisions. Conclusions: Response of technicians in Aljabal Alakhdar region regarding their knowledge about basic laboratory procedures in FDP fabrication indicates several areas of weakness. Avoiding such inadequacy in laboratories can significantly reduce FDP failure rates.

Key words: Fixed dental prosthesis, dental laboratory, survey .