نتایج جستجو برای: force eruption
تعداد نتایج: 198724 فیلتر نتایج به سال:
forced eruption of impacted teeth.1-8 Elastics, elastomeric chain, and elastic thread usually require frequent reactivation. Cantilever springs are highly elastic and exert relatively long-lasting forces, but tend to break easily and can be uncomfortable for patients. To address these problems, my practice developed the Easy-Way-Coil (EWC) system, which is more robust and comfortable than canti...
Eruption is a kind of development move of tooth from the place of its formation to its functional position in the mouth.Time and sequence of permanent's teeth eruption from the point of health diagnosis and orthodontic treatments is very important.Because of this, we decided to evaluate and determine the mean eruption time of canine and premolars from gum penetrations toward occlusion and also ...
Abstract The formation and eruption mechanisms of multi-ribbon flares are extremely complicated, especially when the flare is associated with homologous eruptions in same region. In this paper, we investigate such an event, corresponding to a successful confined eruption. This M7.1 flare, starting at 12:33 UT on 2011 September 24 active region NOAA 11302. We obtain coronal magnetic configuratio...
Magmatic intrusions and volcanic eruptions are intimately related phenomena. Shallow magma intrusion builds subsurface reservoirs that are drained by volcanic eruptions. Thus, the long-held view is that intrusions must precede and feed eruptions. Here we show that explosive eruptions can also cause magma intrusion. We provide an account of a rapidly emplaced laccolith during the 2011 rhyolite e...
an impacted tooth can be performed with either fixed or removable appliances. Fixed appliances do not require special patient cooperation and can produce precise coronal and root movements.1,2 On the other hand, the wire attached to the impacted tooth may be more easily deflected than with removable appliances, causing undesirable movements of adjacent teeth.3 Such movements are minimized with ...
The phenomenon of peripheral coronal loop contraction during solar flares and eruptions, recently discovered in observations, gradually intrigues physicists. However, its underlying physical mechanism is still uncertain. One Hudson (2000)'s implosion conjecture which attributes it to magnetic pressure reduction the energy liberation core, while other researchers proposed alternative explanation...
The eruption of teeth, like many growth processes, seems to be an orderly and patterned sequence of events. The speed and frequency with which this process occurs make it ideal for studies in development and growth. Yet the interplay of growing tissues that results in eruption, although important, is still a problem. A number of theories have been proposed that attempt to explain the eruptive m...
The variety of disturbance mechanisms involved in the 1980 eruption of Mount St. Helens (e.g., heat, burial, and impact force) and the resulting diversity of vegetation responses have provided abundant opportunities for disturbance-zone-specific research (Frenzen 1992; Frenzen et al. 1994). As evidenced by the research reported in this volume, tremendous amounts of knowledge can be acquired fro...
Tenomodulin (Tnmd) is a type II transmembrane protein characteristically expressed in dense connective tissues such as tendons and ligaments. Its expression in the periodontal ligament (PDL) has also been demonstrated, though the timing and function remain unclear. We investigated the expression of Tnmd during murine tooth eruption and explored its biological functions in vitro. Tnmd expression...
introdouction:tooth eruption is recognized as an important aspect of human growth and development. it can be influenced by a number of factors, and it may reflect the general development of a child’s body. the purpose of this study was to determine the age at which the first primary tooth erupted and its relationship with height, weight and head circumference in 3-15-month children in the city ...
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