Efficiency of working length detection and irrigation during preparation of curved root canals
| dc.contributor.author | Boteva, E. | |
| dc.contributor.author | Yovchev, D. | |
| dc.date.accessioned | 2014-01-17T14:33:48Z | |
| dc.date.available | 2014-01-17T14:33:48Z | |
| dc.date.issued | 2012-04 | |
| dc.description | Address for correspondence: Assoc. Prof. Dr. Ekaterina Boteva Department of Conservative Dentistry Faculty of Dental Medicine; 1 Georgy Sofi isky str.; 1431 Sofia, Bulgaria; tel. ++359888328327 ; e-mail: e_boteva@abv.bg | en_US |
| dc.description.abstract | Curved root canals are a challenge for instrumentation, preparation, irrigation and obturation. The aim of the present study was to fi nd the working length and irrigation effi ciency in root canals with curvatures 30º-45º and in root canals with anatomical abnormalities 45º-90º. Sixty-eight human, matured, extracted molars with 201 root canals were included in the study. Molars were placed in three groups in relation to the angle between the root and the axis. The fi rst group of molars – straight – 25º-30º, was the control group, n = 14 teeth – 45 root canals; second group – 25-30º to 45º, n = 22 teeth with 66 root canals; third group – 45º to 90º (n = 31 teeth with 96 root canals). Measurements: mesio-distal buccal size of the chamber in its largest part and both bucco-lingual sizes – the mesio dimension was refered to as L1 and the distal one – as L2. Root canal preparation: extraction of the root pulp with K endofi les number 6, 8, 10, with Step Down and Balance force techniques. Canals length was measured rentgenologically using intraoral radiography, preparation continued after X-ray analysis of the level of penetration of irrigants with contrast solution of diluted Urograffi n 66%. Regime of active irrigation: same for all groups with 2 % H2O2 and 1% NaOCl and paper points drying. To follow up the results a fourth radiography was used and a second one with Urograffi n. The applied criteria for working length and for penetration of the irrigant were as follows: 3 – whole working length, 2-1 mm shorter than the working length, 1-2 mm shorter than the working length and 0 – more than 2 mm shorter than the working length. X-ray – working length detection of molars with root canal curvatures was more accurate, compared with straight roots, due to curved canals in straight roots and inadequate instrumentation. The active irrigation was more effi cient in curved root canals, because in straight canals most of the irrigant was lost back in the mouth or periapically. In straight root canals only moisturizing (Miller pins) the canal could be more effective and less dangerous. | en_US |
| dc.identifier.citation | E. Boteva and D. Yovchev. Effi ciency of working length detection and irrigation during preparation of curved root canals - Acta medica bulgarica , 39, 2012, No 1, 97-103. | en_US |
| dc.identifier.issn | 0324-1750 | |
| dc.identifier.uri | http://hdl.handle.net/10861/382 | |
| dc.language.iso | en | en_US |
| dc.publisher | Централна медицинска библиотека, МУ София / Central Medical Library - MU Sofia | en_US |
| dc.subject | endodontics, working length, curved root canals | en_US |
| dc.title | Efficiency of working length detection and irrigation during preparation of curved root canals | en_US |
| dc.type | Article | en_US |