1. Department of Conservative Dentistry and Periodontology University Hospital Regensburg Regensburg Germany
2. Department of Pathology and Experimental Therapy Universitat de Barcelona Barcelona Spain
3. Department of Integral Adult Dentistry Research Centre for Dental Sciences Universidad de La Frontera Temuco Chile
4. Department of Oral‐ and Maxillofacial Surgery University Hospital Regensburg Regensburg Germany