SRP221539 PRJNA565133 Comparison of oral microbiota in peri-implant mucositis and gingivitis We performed Illumina MiSeq sequencing of the 16S rRNA gene amplicons targeting the V3-V4 hypervariable region from dental plaque samples. We aimed to compare both the supra-mucosal and the submucosal microbiota present at peri-implant mucositis niches with their 'counterparts' around teeth, i.e. the gingivitis niches, within the same individual who present with both clinical conditions.