تقييم فعالية دعم الزريعات التقويمية في مقدمة قبة الحنك لإرجاع الأرحاء العلوية باستخدام جهاز Keles Slider

الملخص EN

There are many methods of skeletal anchorage for upper molar distalization, for example : palatal implants , onplants , mini-plate and mini-imlants.

Ther are different opinions about efficiency of all these method , so they need to be evaluated.

The purpose of this study was to evaluate the motion of mini-implants placed in the anterior region of the palate before and after upper molar distalization using a modified design of Keles slider.

Materials and methods:20 mini-implants (8 mm length, 1.8mm diameter) were placed paramedian in the anterior region of the palate.

Keles slider wasanchored to the modified design of head of mini-implant.The appliances’ coil spring systems were activated to a distalization force of 240 cN.

Results: Forces acting reciprocally on the anchorage unit doesn’tresult in significant motion of the mini-implants.no significant extrusion were noted to sn 0.34±0.64 mm, or to spp 0.16±0.53 mm (p> 0.05).

nosignificant tipping were noted to sn 0.48º±4.54º or to spp 0.54º±4.46º (p> 0.05).

Conclusions: mini-implants with 1.8 mm in diameter and 8mm long, which inserted in the anterior region of palate provide stationary anchorage in molar distalization with the Keles slider.