When the abutment is changed at #19 with 30 Ncm torque, the space differential remains (Fig.4, as compared Fig.2) and must be normal.   The shorter implant at #18 appears not osteointegrate, since the patient feels pain when the abutment is torqued at 15 Ncm.

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Xin Wei, DDS, PhD, MS 1st edition 05/07/2020, last revision 05/07/2020