De Path File, minder apicale transportatie creeren glide path?

Kreuger, P. (Paulien) (2011) De Path File, minder apicale transportatie creeren glide path? thesis, Dentistry.

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Abstract

Background: Research has shown that preparation systems tend to create an apical transportation. Apical transportation is a problem as this can cause failure of treatment. Aim: The purpose of this study was to determine whether there is a demonstrable difference between the possible development of apical transportation whether a glide path is created or not. Methodology: Sixty extracted human mandibular (pre-) molars were included. First, the teeth were decapitated near the cement-enamel junction. Then, for each radix, a mold of putty, where also a phosphor plate can be fitted in, was made. This phosphor plate can be used to create an X-ray image. The working length of all radices was determined using a K-file # 10, visible just beyond the apical foramen minus 1 mm. The prepared teeth were randomly divided into three groups: group I = control (no glide path), group II = glide path created with K-file (#15) and K-flexofile (#20), group Ill =glide path created with PathFile (#13, #16 and #19). The root canals were then prepared using the Pro Taper rotary system with files S1, S2, F1, F2 and F3 as master apical file. The apical transportation in degrees was measured using the extrapolation of the first and postoperative X-ray images. The postoperative X-ray image was set to a transparency of 40o/o which made both the K-file #1 0 and the Pro Taper F3 visible. Using Photoshop, the angle between these files was measured. The time in seconds required for preparing each root canal, including flushing, was recorded for each radix. The frequencies of the deformation or fracture of the files were evaluated. The non-parametric data were analysed with the Kruskai-Wallis test for apical transportation and preparation time. The chi-square test was applied for fracture rate of the file. All tests were done at a significance level of 0.05. Results: No significant difference has been found between the groups on the apical transportation, preparation time and the fracture rate of the file (p=0.312, p=0.287, p=0.349 respectively). Conclusion: The results of this study indicate that applying a glide path before further shaping of the root canal doesn't provide less apical transportation in comparison with no glide path.

Item Type:	Thesis (Thesis)
Supervisor name:	Vogels, Drs. M.P.J.M.
Faculty:	Medical Sciences
Date Deposited:	25 Jun 2020 11:06
Last Modified:	25 Jun 2020 11:06
URI:	https://umcg.studenttheses.ub.rug.nl/id/eprint/2593

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