![]() Thus, the purpose of this in vitro study was to compare the time tested Root ZX with the newly introduced SybronEndo Mini Apex Locator in the presence of various intracanal irrigants. SybronEndo Mini Apex Locator (SybronEndo, Sybron Dental, Glendora, CA, USA) is multifrequency based and is also claimed to be accurate in the presence of various intracanal conditions, but has not been investigated much. Morita Mfg Corp., Kyoto, Japan), a dual frequency device, based on the “ratio method”, has been investigated extensively as regards its accuracy and its efficacy in the presence of various irrigants. In addition, some systems use low frequency oscillation and/or a voltage gradient method to detect the canal terminus. Whilst the simplest devices measure resistance, other devices measure impedance using either high frequency, two frequencies, or multiple frequencies. Since then, different generations of EALs have been developed. Based on Suzuki's discovery that electrical resistances between the periodontal ligament and oral mucosa registered constant values of 6.5 kΩ, Sunada in 1962 developed the first electronic apex locator (EAL). The radiographic assessment technique is sensitive in both its exposure and interpretation.Įlectronic devices for assessing the root canal length have gained popularity and eliminate many of the problems associated with radiographic measurements. The apical constriction (minor apical diameter) is the narrowest apical portion of the root canal with a variety of morphological variations that make its identification unpredictable. Establishing the working length at the apical constriction is considered ideal for endodontic treatment. In addition, SonicFill’s higher translucency does not compromise aesthetics.The determination of an accurate working length is a critical step in endodontic therapy. Increased levels of photo-initiators in the composite material allow a full 5mm depth of cure in 20 seconds with as little as a 500mW/cm light source. The composite in the phase of sculpting is highly responsive to the shear stress and allows tight adaptation in the cavity. When the sonic energy is stopped, the composite returns to a more viscous, non-slumping state that is ideal for carving and contouring. This enables quick placement and precise adaptation to the cavity walls. As this sonic energy is applied through the handpiece, the modifier causes the viscosity to drop (by up to 87%), increasing the flowability of the composite. SonicFill’s composite incorporates a highly-filled proprietary resin with special modifiers that react to sonic energy. Easy – with optimal non-sticky, non-slumping handling of the composite and convenient delivery through a small cannula.Reliable – it provides predictable, long-term restorations as a result of its improved adaptation and reduced shrinkage. ![]() Placement to polish takes less than three minutes Fast – single-step bulk filling of up to 5mm saves time.SonicFill’s proprietary sonic activation significantly reduces the composite’s viscosity to fill the cavity quickly. The SonicFill system comprises a KaVo handpiece that enables sonic activation of a specially designed and conveniently delivered composite from Kerr. In addition, the handpiece is available free of charge with the purchase of 10 refill packs (each refill pack comprises 20 x 0.3g compules and costs approximately £50). SonicFill is the first of its kind – a time-saving, single step, bulk filling system for posterior restorations. Kerr Sybron Endo Division SonicFill TM Key Features
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