MANDIBULAR MOLAR ATTACHMENTS To avoid occlusal interference, it is not recommended that SPEED brackets be used on the lower molars. SPEED mandibular tubes are ideal for the lower molars. These low profile tubes eliminate the danger of occlusal interference while offering the following benefits: 13 The SPEED molar tube base has the indent off-centre to the distal; this, along with its curvature, permits positioning further mesially for correct tube orientation. Off-centre placement of lower second molar tubes allows them to be positioned far enough gingivally, even in young patients. Note that the base is also cut away at the distal gingival to prevent gingival interference. MAXILLARY MOLAR ATTACHMENTS It is important to remember when bonding molars to use a #2 round burr in reverse to remove pellicle prior to etching. There are significant advantages to using single SPEED brackets on the mesiobuccal cusps of the upper molars: It is recommended that the upper second molar brackets be positioned further occlusally so that the upper second molars end up being positioned further gingivally to create the desired Curve of Spee and reduce the likelihood of upper second molar extrusion. • They permit the archwire to lie very close to the buccal surfaces of the molars. • The base of the lower second molar tube has been shaped to permit bonding even when the gingival margins rise steeply at the distal. Often, this permits bonding of partially erupted second molars even when there is a deep cusp overhang. • The anatomically formed Micro-Retentive Mesh™ bonding base maximizes bond strength. • The laser welded hooks are shaped to avoid the gingival/mucosa tissue. • Optimal placement relative to all reference planes is easily accomplished. • The longer span between molar brackets provides for more efficient use of compression coil springs for second molar distalization. • Distal extensions of the archwire as long as 6 mm are possible without soft tissue injury; this is a big advantage when employing distalization mechanics.
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