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Nicola Baldini, DDS/Chiara DElia, DDS/Marco Clementini, DDS/Ana Carrillo de Albornoz, DDS, PhD/Mariano Sanz MD, DDS/Massimo De Sanctis MD, MSc: The aim of this study was to test whether zirconia abutments exhibit the same clinical and esthetic outcomes as titanium abutments in single-tooth implant restorations in the esthetic area. The 24 treated patients were randomly assigned to a test (zirconia abutment) or control (titanium abutment) group. Objective evaluations were carried out using the Implant Crown Aesthetic Index (ICAI) and the Papilla Index (PI) at the 1-month and 12-month follow-up examinations after crown cementation. No significant differences, either in ICAI or in other periodontal or radiographic measurements, were observed. At 1 year, zirconia and titanium abutments exhibited the same esthetic outcomes.
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Baldini et al. (2016) studied this question.
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