Definition and Endodontic Treatment of Dilacerated Canals: A Survey of Diplomates of the American Board of Endodontics

Abstract

Aim To gather data from Diplomates of the American Board of Endodontics regarding treatment of dilacerated canals. Materials and methods A questionnaire addressing definition, endodontic treatment procedures and prognosis was constructed and distributed via e-mail to 708 Diplomates of the American Board of Endodontics. Data from 150 respondents, a 21% response rate, were collected by using a Web-based interface. For statistical analysis, Chi-square tests were used. Results More than 25% of respondents believed that a dilacerated root should have a curvature > 40°. One-visit treatment is the best therapeutic approach and transportation is the most likely complication in preparation of these canals. A crown-down technique, watch-winding motion and a master apical file # 25 are the best choices for preparation of these canals. Any warm obturation technique is preferred over lateral compaction by most respondents. Conclusion A crown-down technique for root canal preparation and a thermoplastic obturation technique are recommended for canals whose curvature is more than 40°. The prognosis of the treatment of these canals is judged not lower than normal canals. Clinical significance Crown-down technique and thermoplastic obturation are recommended for dilacerated canals. How to cite this article Dastmalchi N, Kazemi Z, Hashemi S Peters OA, Jafarzadeh H. Definition and Endodontic Treatment of Dilacerated Canals: A Survey of Diplomates of the American Board of Endodontics. J Contemp Dent Pract 2011;12(1):8-13.

Endodontic Management of Dilaceratd Roots: A Case Series

“…In dilacerated teeth it is often difficult to explore and negotiate the canal to its apical foramen; hence the use of scout file is recommended in these kind of cases [7]. In the present cases # 10k file was inserted in watch-winding motion to confirm the canal patency.…”

Use of fluid filtration method to evaluate the effect of master cone size on the apical seal of severely curved root canals

“…Endodontic treatment of severely curved root canals is complicated by the difficulty of achieving a hermetic seal, as failure to do so can result in treatment failure (7). The present in vitro study evaluated the effect of MC size on the apical seal of severely curved (dilacerated) root canals and showed that an MC size up to #30 did not significantly increase apical microleakage.…”

“…In cases where small, flexible spreaders cannot reach to approximately 1 mm of the working length, lateral compaction may not be the technique of choice (7,18). Although the survey of Dastmalchi et al (7) showed that most ABE Diplomates chose thermoplasticized technique as the best method to obturate severely curved canals, lateral compaction was utilized in the present study because of its widespread use (it is the most commonly used technique in Europe and the United States) (19).…”

“…In the present study, a curvature of 45-60º was studied. This decision was based on a recent study by Dastmalchi et al (7), which showed that most Diplomates of the American Board of Endodontics (ABE) believe that a dilacerated root should have a curvature of > 40°.…”

Preoperative Estimation of Endodontic Working Length With Cone-Beam Computed Tomography and Standardized Paralleling Technique in Comparison to Its Real Length: an in Vitro Study.

“…The distortion can be minimized by positioning the object in the central part of the x-ray beam, using a parallel technique [11]. Measurement of the working length may be much more di cult in curved canals, which makes the measuring di cult [12].…”