Comparative evaluation of the vertical and horizontal root fracture resistance of primary maxillary incisors obturated with zinc oxide eugenol, vitapex, and endoflas: An in vitro study

Talreja, Nidhi; Shashikiran, N D; Singla, Sham; Mali, Shikha; Agrawal, N.; Lohiya, Juhi

doi:10.4103/jioh.jioh_206_21

Cited by 1 publication

(1 citation statement)

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“…The samples were placed in the center of the lower plate beneath the plunger in the universal testing machine (SHIMADZU 5 KN AUTOGRAPH AG X PLUS Japan), at the National Research Center. In the center of the orifice parallel to the long axis of the tooth, the plunger was pushed downward at a crosshead speed of 5mm/min until the root fractured (Talreja et al, 2022). The machine stopped automatically when the fracture occurred, and the software of the machine measured the maximum force before root fracture occurrence, as shown in figure 5.…”

Section: • Assessment Of the Risk Of Perforationmentioning

confidence: 99%

Assessment of the Shape and Diameter of the Root Canal and the Risk of Perforation After Using Rotary System Versus Manual Instruments in Extracted Second Primary Molars: An in -Vitro Study

Elameen

Nasr

Kenawy

et al. 2023

Advanced Dental Journal

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Aim: To assess canal shape, dentin thickness, and risk of perforation after using rotary Fanta AF baby files versus manual Hedstrom (H) files in root canal instrumentation of extracted second primary molars. Materials and methods: Twenty-six extracted second primary molars were randomly assigned to two groups; in Group (I): Molars were instrumented by Rotary Fanta AF baby files while in Group (II): Molars were instrumented by Manual H-files. The amount of dentin removal, canal shape, and risk of perforation were evaluated by cone-beam computed tomography (CBCT) comparing the pre to post instrumentation images. Fracture resistance after instrumentation was assessed with a universal testing machine. Results: Regarding the overall comparison of the amount of dentin removal on the mesial and distal walls of the distal canal, a significant difference was present between Fanta AF baby files and H-files (P=0.013) and (P<0.001) respectively. Where H-files removed a higher amount of dentin with mean ±SD (0.10±0.04) and (0.13±0.05) than Fanta files (0.08±0.04) and (0.05±0.02). However, a non-significant difference was observed regarding the shaping ability (P=0.691), the incidence of risk of perforation (P=0.680), and the fracture resistance (P=0.189). Conclusion: The Fanta AF baby files seem to be more effective in preserving dentin thickness than H files, and it can be utilized as a better alternative in root canal instrumentation in primary molars.

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Section: • Assessment Of the Risk Of Perforationmentioning

confidence: 99%