By Theodore Eliades, Nikolaos Pandis
Self-Ligation in Orthodontics is a massive new textual content that studies, analyses and clarifies the presently to be had peer-reviewed proof on a couple of functions of this know-how, espousing diversified views to make this a special medical source on self-ligation.
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Extra resources for Self-Ligation in Orthodontics
Example text
Lastly, there is a large body of literature to demonstrate the much higher friction between bracket and archwire in vitro with elastomeric ligation compared to wire ligatures. This had been proposed as a factor of clinical significance more than 30 years ago7. 8 The potential importance of friction and its relation to forms of ligation will be discussed in more detail below. The great popularity of elastomeric ligation in the last 40 years was achieved in spite of these substantial deficiencies in relation to wire ligatures.
The great popularity of elastomeric ligation in the last 40 years was achieved in spite of these substantial deficiencies in relation to wire ligatures. Speed Fig. 1 Conventional elastomeric ligatures failing to maintain full bracket engagement on three of the six ligated teeth. Fig. 2 Loss of rotational control by elastomeric ligatures on five teeth. and ease of use was the over-riding asset of elastomerics and it is no surprise that the strongest motivation behind the early efforts to produce a satisfactory self-ligating bracket was a desire to have all the benefits of wire ligation but in addition to have a system which was quick and easy to use.
Wire ligation is better in every respect, but is very slow, inconsistent in its force application and the wire ends can cause trauma to patient and operator. It is 3 easy to find examples of the deficiencies of conventional ligation, but clinicians have become accustomed to tolerating these shortcomings. Self-ligation offers the opportunity for very substantial improvements in relation to all of these drawbacks, but for many years remained the choice of a small minority of clinicians. Self-ligating brackets by definition do not require an elastic or wire ligature, but have an inbuilt mechanism which can be opened and closed to secure the archwire.