Out of 142, 5 mesial roots had 3-2 configuration which is Type XII, two roots had 2-3 configuration classified as Type XIII by Gulavibala et al.36 and, 1 mesial root had 2-3-2 configuration categorised as Type XXI by Al-Qudah and Awwadeh.33 It is often easy for a clinician to debride and obturate Type II and Type IV.
While these systems all use their own syringes to obturate root canals with light pressure (20), according to the literature, they share a common defect: overfilling.
Be assured that whatever evolves from this fractious divorce between a divided Britain and an obturate Brussels the child will be unloved and disowned.
The answer is the cartridge itself seals the breech, with the polymer from the case flowing into the empty space to form a seal and obturate the chamber.
When treating maxillary first molars, a major cause of endodontic failure is the inability to properly locate, debride, or obturate the additional canals in the mesiobuccal root (Weine et al, 1999).
The chamber pressure has to be higher than the Brinnell hardness number of the bullet times 1,440 in order to make the bullet obturate. For example, the Colt .45 has a SAAMI upper pressure limit of 14,000 psi.
The 7.62x39mm operates at the same industry maximum average chamber pressure as the .30-06 Springfield, and I'm thinking the 50,000 CUP kick in the rump causes slightly undersized lead-core bullets to obturate enough to fill the grooves of the rifling.
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obturate - block passage through; "obstruct the path"