IZA%20anatomy%201  5_img_3  

在NTO雜誌裡,DR.林錦榮SHARE有關骨釘植入IZC(顴骨下脊)的一些概念,其原稿在下方的連結裡!!

It’s outside of the root area. Unlike inter-radicular placement, the size has to be limited to 1.2mm ~ 1.5mm . Instead using a 2mmx 12mm stainless orthodontic bone screw for bicortical engagement avoids root damage and caused almost no fracture to the screw.

It can be as an excellent anchorage unit as inter-radicular placement of orthodontic bone screws.

It’s much better than inter-radicular placement of orthodontic bone screw for distalization of the whole upper arch. The 2mx 12mm stainless steel orthodontic bone screw requires neither incision nor tissue punch. Self-drilling is sufficient. IZC placement over

 

 

 

 

mesiobuccal root area of upper second molar is better than over that of the upper first molars.

 

Better be placed over the attached gingiva area.

 

Contra indicated for patients of a very young age and with low sinus floor among the roots of maxillary molars.

Using about 10~ 12oz (or 284 -340gm ) to distalize the whole upper arch. An excessive force will result in failure!

FROM~~Summary of the new IZC placement(from NTO)

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