All participants receive a clinical and radiographic exam of the implant site that is sampled for PICF. Clinical and radiographic parameters such as implant mobility, presence or absence of supragingival plaque, and interproximal bone levels were assessed. Peri-apical radiographs, utilizing a paralleling technique, will be obtained from each implant fixture to evaluate the marginal bone level compared to baseline periapical radiographs made at the time of definitive prosthesis delivery. Each participant's implant site is isolated with cotton rolls, light air is applied over the site to eliminate the potential for ambient salivary contamination of the PICF sample. The implant site is sampled for 30 seconds at four distinct sites (mesio-buccal, disto-buccal, mesio-lingual, disto-lingual) by one clinician under loupe magnification. The fluid volumes collected on each strip will be quantified using the Periotron 8000 Instrument.