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COMPARATIVE EVALUATION OF ZIRCONIA MATERIAL USED FOR FIXED PARTIAL PROSTHESIS PLACED ON VITAL & NON-VITAL ABUTMENTS ON THE PERIODONTAL STATUS – A TWO YEAR RETROSPECTIVE FOLLOW-UP
Authors: Shetty S , SHETTY K, WALI O, FATIHI B, ALMARSHOUD L AND SHEIKH KH

ABSTRACT
Objective: A sound periodontium is critical for the long term success of fixed prostheses. These prostheses are often prepared on vital teeth and non-vital as abutments. Endodontically treated teeth (non vital abutments) have often been looked upon with doubt as suitable abutments. Metal free ceramics have become highly popular choice in fixed prosthodontics. The present study aimed to assess the long term clinical and radiographic effects and tissue responses when zirconia was used in FPD placed on vital and non-vital abutment teeth on the periodontal parameters. Methodology: Following ethical committee approval, the study group comprised of 30 abutment teeth; 14 vital and 16 non vital, in 14systemically healthy patients (5 males and 6 females) aged between 18 – 45 years who had received 3 unit fixed prosthesis fabricated using Zirconia and having equigingival margins. The following parameters were assessed at the time of bridge placement and 2 year follow up – CAL, Probing depth, Distance between CEJ/ cervical crown margin and alveolar crest of the abutment teeth (radiograph). Results: Statistical analysis carried out by SPSSV22 software revealed no significant changes in clinical parameters and radiographic bone levels (P<0.05) from the time of bridge placement till the 2 year follow up in the zirconia prostheses placed on vital abutments. However, significant changes were observed in prostheses placed on non-vital abutments (p<0.05). Additonally, significant differences were observed between vital and non vital abutments at various time intervals only with regard to CAL. (p<0.05). Conclusion: There seemed to be favorable responses of the periodontal tissues to zirconia used on the abutments of FPDs with not much difference between vital and non-vital abutments in the long term follow-up. Keywords: vital abutments, non-vital abutments, periodontal status, bone loss, zirconia, FPD
Publication date: 01/05/21
    https://ijbpas.com/pdf/2021/May/MS_IJBPAS_2021_5471.pdf
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https://doi.org/10.31032/IJBPAS/2021/10.5.5471

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