Planar RealTime "Mirror" Reflection

Well I have virtual dentist simulator, in this i'm using mouth-mirror instrument to see patient teeth's in mirror reflection, for which i'm using "Planar Real-time Reflection". In PC build i can clearly see the reflection of teeth's when mouth-mirror instrument is near/inside mouth. But it reflected teeth's are not clearly visible in Oculus. Check out the attachment below

The first image is of PC with clear mirror reflection. Second image is of Oculus, were reflection is not clear and some time it's showing reflection in-between meshes like mesh teared up.

And the values for "Planar Realtime Reflection", in inspector are same as default, but results are different in PC and Oculus. Want good reflection in Oculus.