الفهرس 
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Abstract
This study evaluated the effect of two different implant widths on the masseter and temporalis muscles activity in implant supported mandibular overdentures. Six completely edentulous patients were selected for this study and were rehabilitated with fully functional complete dentures two weeks before any surgical intervention. The cases were divided into two equal groups according to the type of implant:
group I: patients in this group were rehabilitated by implant supported and retained mandibular overdenture by four Mini-implants positioned in the interforaminal area.
group II: patients in this group were rehabilitated by implant supported and retained mandibular overdenture by two conventional sized implants positioned in the interforaminal area.
The electrical activity of the masseter and temporalis muscles was recorded by means of electromyography.
The results of this study revealed slight increase in the muscle activity in patients rehabilitated with implant supported and retained mandibular overdenture by four Mini-implants compared to those rehabilitated by implant supported and retained mandibular overdenture by two conventional sized implants.