It all depends on the angulation of the implant in your bone, and the angulation of the abutment and crown in your mouth. If the angles work out so that the screw hole is behind the tooth, then go with the screw-retained. Often, however, that is not possible on a front tooth and you have to go with the cement retained.
Studies have been showing that bone loss can occur if excess implant cement is not removed well when the cement retained crown is not removed well. On that not the angle of most implants in the front of the mouth sometime make it difficult to restore with a screw retained crown. Speak to your dentist and see what your options are.