Abstract:

Purpose: Evaluation of the effects of the root channel paths with different content (bioseramic, calcium hydroxide and resin) on the bonding resistance of the root fiber of a post with a refined shell. Tools and Methods: For this experiment, 40 flat, single-root small and cutting teeth were used. The crowns of the teeth were cut from the mine cement border under water cooling with diamond fissure frez. The work length was determined to be 1 mm behind the apex and the roots were extended to the F5 curve with the ProTaper (Dentsply Maillefer, Ballaigues; Switzerland) rotating instruments, and between each curve was irrigated with 2 ml of 0.5 % NaOCl. After the root channel instrumentation was completed, the root channels were washed with 2 ml of 17% EDTA. The examples were randomly divided into four trial groups (n=10). Group 1: Control group; channels were filled with only F5 Protaper grass (Dentsply Maillefer, Ballaigues; Switzerland), channel grass was not used; Group 2: Calcium silicate-based bioseramic channel filling grass iRoot SP (Innovative Bioceramix, Vancouver, Canada) and F5 Protaper grass; Group 3: Grass-based channel filling grass MetaSEAL (Parkell, NY, USA) and F5 Protaper grass grass; Group 4: Calcium hydroxide-based channel filling grass Sealapex (Kerr, Italy) and F5 Protaper grass grass grass filled channels. 1.5 mm glass fiber post (Poly dentia GF Posts, Swiss) was opened with a frez.  In the prepared post empty, the glass fiber posts were simulated with Panavia F 2.0 (Kuraray Medical, Tokyo, Japan), which is a resin siman. The prepared samples were kept at 37°C and 100% moist for 1 week and then attached to the blocks prepared with cold acrylic with a catalytic adhesive from the coronary, from the flat surface. From the roots attached to the acrylic blocks, the dentin discs were taken to the long axis with the low-speed Isomet Diamond Separe (Buehler, Lake Bluff, NY) under water cooling in order to get the dentin discs (Figure1). Four disc shapes with a thickness of 0.6 mm were obtained from each coronary part of the root. The later obtained discs were placed on the Universal test device (Instron) (Elista, Istanbul, Turkey) in order to look at the apical part (dark part) of the force to be applied, 1 mm/min. The speed of power (Figure 1). The push-out force was applied until a failure occurred in the connection and the achieved strength value was recorded as Newton (N). Connectivity resistance was calculated by the following formula; Connectivity resistance = Applied Force (N) ÷ Connectivity Surface Area (mm2) statistical analysis was made using the One-way Anova test. Results: The results of the statistical assessment of the 40 post-link outcomes studied in this study are presented in Table 1. When all the test groups were statistically analyzed, no significant difference between the test groups was observed (p.0.05). The post-connection resistance values obtained in the group (control group) filled with only the fence and post-space opened without any pat application were found similar to the link values obtained from the application surfaces of the Sealapex and iRootSP pat. In the examples applied metaseal, the post-link values were found to be statistically less important than other groups (p>0.05).  Results:Sealapex containing calcium hydroxide, metaseal containing resin and iRootSP channel filling patches containing calcium silicate, according to the control group in the groups where it was used, there was no difference between the bonding resistance of the glass fiber post symanted with resin siman. Different root channel paths do not affect the adhesion of the glass fiber post. According to these results, the root channel filling paths used in our work on the teeth that will be applied to the glass fiber poses that will be attached to the resin shell can be used. Keywords:connection resistance, glass fiber post, channel paths

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