Dentsply rotary endo system manual#
10 ProTaper Next showed maximal microbial load reduction than self-adjusting files and manual instrumentation. In accordance with a study by Tewari et al., ProTaper Next was found to be most effective in microbial reduction than K3XF, Hyflex CM and hand instruments. 7, 8, 9 This property allows the file to maintain a two-point contact with each canal at a time. An off-centred rectangular cross-section design imparts improved file strength with unique asymmetric rotary motion that further enhances ProTaper canal shaping efficiency and cyclic fatigue resistance. The ProTaper Next (2013) was made utilizing M-Wire technology which incorporates five files (X1–X5). 6 Diverse machine-assisted techniques include automated, sonic and ultrasonic, laser systems and non-instrumental root canal preparation techniques. Machine-driven endodontic instruments help to prepare the root canals swiftly with much ease as opposed to manual instrumentation. 3, 4, 5 The devices for root canal instrumentation may be classified as either manual or machine assisted. Several mechanical devices and techniques were introduced to make canal preparation easier and to further improve the effectiveness of instrumentation.
1Effective chemo-mechanical debridement techniques on par with stringent disinfection protocols aid in possibly diminishing the bacterial load residing in the complexities of the root canal systems. The main goal of endodontic treatment is to reduce the number of bacteria and their byproducts which perpetuates apical periodontitis. ProTaper Next also showed improved microbial reduction percentage as compared with ProTaper Gold. XP-endo Shaper was highly effective in reducing total bacterial count from root canals of teeth with asymptomatic apical periodontitis than ProTaper Gold. XP-endo Shaper succeeded in reducing total bacterial count than ProTaper Gold (95.72%) and there exists statistically significant difference between them ( P < 0.05). Both XP-endo Shaper (99.50%) and ProTaper Next (98.81%) were effective in reducing total bacterial count, and there was no statistically significant difference between them ( P > 0.05). After preparation (S2) with ProTaper Next, ProTaper Gold, and XP-endo Shaper, root canals still had bacteria with mean counts of 11.8 × 10 5, 87.2 × 10 5 and 4.52 × 10 5 bacterial cells, respectively.
Samples were taken before preparation (S1) were positive for presence of bacteria, with mean numbers of 9.94 × 10 7, 20.4 × 10 7 and 9.20 × 10 7 bacterial cells for the ProTaper Next, ProTaper Gold and XP-endo Shaper groups, respectively. Samples obtained before and after instrumentation were subjected to DNA extraction, amplification and quantitation of total amount of bacteria by using the real-time polymerase chain reaction. Root canals from single or multi-rooted teeth (straight canals) with necrotic pulps and asymptomatic apical periodontitis were instrumented using either ProTaper Next ( n = 20), ProTaper Gold ( n = 20) and XP-endo Shaper ( n = 20) under irrigation with 3% sodium hypochlorite. To compare the antibacterial effectiveness of three rotary file systems i.e., ProTaper Next, ProTaper Gold and XP-endo Shaper in root canals of teeth with asymptomatic apical periodontitis by using the real-time polymerase chain reaction.
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