¿°Áö¿Ï(Yum Ji-Wan) - Centum Tower Dental Clinic
Abstract
Access preparation is the most important phase of nonsurgical root canal treatment. A well-designed access preparation is essential for a good endodontic result. Without adequate access, instruments and materials become difficult to handle properly in the highly complex and variable root canal system. The objectives of access cavity preparation are to achieve straight line access to the apical foramen or to the initial curvature of the canal; to locate all root canal orifices; and to conserve sound tooth structure. Prior to root canal treatment, an inter-disciplinary evaluation should be performed. Sometimes crown lengthening procedure is needed to restore tooth structure and achieve a healthy biological width and finally to create the ferrule effect. Because internal anatomy dictates access shape, the first step in preparing an access cavity is visualization of the position of the pulp space in the tooth. This requires evaluation of angled periapical radiographs and examination of the coronal and cervical tooth anatomy. Diagnostic radiographs help the clinician estimate the position of the pulp chamber, the degree of chamber calcification, the number of roots and canal, and the approximate canal length. Complete isolation promotes successful endodontic treatment. Isolation accomplishes soft tissue retraction, protects the oral pharynx and prevents salivary leakage. Preflaring the coronal one-third is especially important when using NiTi rotary file for canal shaping to prevent sudden file breakage. Today, access preparation can be more predictable performed due to better vision, advancements in ultrasonic instrument designs, and improved clinical techniques. The endodontic access preparation influences all ensuring treatment steps and provides the opening for shaping canals, cleaning root canal systems, and three-dimensional obturation.
Å°¿öµå
KMID :
1035020140150010008
¿ø¹® ¹× ¸µÅ©¾Æ¿ô Á¤º¸
µîÀçÀú³Î Á¤º¸
À¯È¿¼º°á°ú(Recomendation)