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On the other hand, the root canal filling material may be extruded from the apex leading to other complications. [citation needed] The X-ray in the right margin shows two adjacent teeth that had received bad root canal therapy. The root canal filling material (3, 4, and 10) does not extend to the end of the tooth roots (5, 6 and 11).
A root canal is the naturally occurring anatomic space within the root of a tooth. It consists of the pulp chamber (within the coronal part of the tooth), the main canal(s), and more intricate anatomical branches that may connect the root canals to each other or to the surface of the root.
A root end surgery, also known as apicoectomy (apico-+ -ectomy), apicectomy (apic-+ -ectomy), retrograde root canal treatment (c.f. orthograde root canal treatment) or root-end filling, is an endodontic surgical procedure whereby a tooth's root tip is removed and a root end cavity is prepared and filled with a biocompatible material.
This type of head and shoulders pattern has more than one left or right shoulders or head. It is also known as multiple head and shoulders pattern. [citation needed] One particular type is known as a Wyckoff distribution, which usually consists of a head with two left shoulders and a weaker right shoulder. [citation needed]
The proximity of the root to the canal can be assessed radiographically and there are several factors which can indicate high risk of nerve damage: [21] Darkening of the tooth root where it crosses the canal [21] Deviation of the canal [21] Narrowing of the roots [21] Loss of the lamina dura of the canal [21]
Many surgical procedure names can be broken into parts to indicate the meaning. For example, in gastrectomy, "ectomy" is a suffix meaning the removal of a part of the body. "Gastro-" means stomach. Thus, gastrectomy refers to the surgical removal of the stomach (or sections thereof).
open the ear canal •Seigle's pneumatic speculum: open the ear canal and give a magnification; test the mobility of tympanic membrane; see a magnified image of small perforations; introduce medicine into middle ear; perform Fistula test for vestibular function •Aural/Ear speculum: to fit in and straighten the external ear canal: Lack's ...
Shoulder dystocia occurs after vaginal delivery of the head, when the baby's anterior shoulder is obstructed by the mother's pubic bone. [3] [1] It is typically diagnosed when the baby's shoulders fail to deliver despite gentle downward traction on the baby's head, requiring the need of special techniques to safely deliver the baby. [2]