We would like to express our thanks to Dr. Gabriel Bosch for the superimposition, calculation and illustration of the intraoral scans.

SV, BS and MR created the conception and study design. MR performed the surgical and DT the prosthodontic treatment. SV, PP and DT performed the data collection and AS the histological examination. SV, BS and AS analysed and interpreted the data. SV drafted the manuscript and PP helped hereby. BS and MR revised the manuscript. All authors read and approved the final manuscript.

This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. Silvio Valdec, Pavla Pasic, Alex Soltermann, Daniel Thoma, Bernd Stadlinger and Martin Rücker declare that they have no competing interests.

All patients were informed on the operative procedure and possible risks and signed an informed consent. Treatment options were discussed.

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