| ASSESSMENT OF CLEANING ABILITY AND MICROCRACKS FORMATION OF TWO SINGLE USE ROTARY FILES IN DIFFERENT MOTIONS: AN IN-VITRO STUDY |
| Paper ID : 1037-YRC2022 (R1) |
| Authors |
|
Ahmed M. Rakha *, Marwa El sayed Sharaan, Mai Hamdy Ragab Suez Canal University |
| Abstract |
| The major aim of endodontic treatment is to remove infected and necrotic tissue and debris, shape the root canals and provide adequate seal of the root canal system. Smear layer is formed as a result of dentin cutting and consists of dentin remnants, pulp tissue and bacteria. Thus, it is recommended to remove this smear layer before processing to the root canal obturation. There have been significant advancements in the development of Ni-Ti rotary instrument in recent years in order to reduce the working time, cost and improve the safety of shaping procedure. One of the most serious side effects of mechanical root canal preparation by Ni-Ti rotating or reciprocating files is the formation of microcracks which affects root structure integrity and may end with vertical root fracture and tooth extraction. The present study aimed to determine the microcrack incidence during root canal preparation by AF F-One blue and RECIPROC® blue files using stereomicroscope and to evaluate the cleaning action of AF F-One blue and RECIPROC® blue files to remove smear layer using Scanning-Electron Microscope. This study was conducted on 60 disto-buccal root canals of extracted human permanent maxillary molars. Access cavities was prepared with round bur and Endo-Access bur. |
| Keywords |
| Microcracks, Smear layer, Rotation, Reciprocation |
| Status: Accepted (Oral Presentation) |
