22Aug 2017

TITANIUM-REINFORCED ZIRCONIA ABUTMENTS VERSUS PURE ZIRCONIA ABUTMENTS FOR IMPLANT-SUPPORTED SINGLE TOOTH RESTORATIONS: A SYSTEMATIC REVIEW.

  • PhD student, Department of Fixed Prosthodontics, Faculty of Oral and Dental Medicine, Cairo University, Egypt.
  • Department of Fixed Prosthodontics, Sana`a University, Sana`a, Yemen.
  • Professor, Department of Fixed Prosthodontics, Former Dean, Faculty of Oral and Dental Medicine, Cairo University, Egypt.
  • Professor, Department of Fixed Prosthodontics, Faculty of Oral and Dental Medicine, Cairo University, Egypt.
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Statement of problem: Recently, zirconia abutments are widely replacing the gold standard titanium abutments in restoring dental implants especially in aesthetic areas due to their superior aesthetics, excellent biocompatibility and satisfactory mechanical properties. However, excessive hardness of zirconia in comparison to titanium results in wear at implant-abutment interface followed by many technical and aesthetic complications. New zirconia abutments, with titanium component at the apical portion, were developed to overcome these complications and improve their mechanical performance. Purpose: To compare the effectiveness of titanium-reinforced zirconia abutments versus pure zirconia abutments in patients restored with implant-supported single tooth restorations to improve post-insertion abutment survival and patient satisfaction. Material and methods: We searched the Cochrane Oral Health Group Trial register (25 December 2016), Cochrane Central Register of Controlled Trials (The Cochrane Library, 2016, Issue 12), MEDLINE (January 1966 to 25 December 2016) and the WHO International Clinical Trial Registry Platform (25 December 2016). We did not apply any language or date restrictions. Inclusion criteria were randomized controlled trials (RCTs) comparing titanium-reinforced zirconia abutments versus pure zirconia abutments in patients restored with implant-supported single tooth restorations. Two review authors independently assessed trials for inclusion. Risk of bias assessment, extracting the data and checking for accuracy were to be conducted by two review authors independently, and the results were to be expressed as risk ratio (RR) or mean differences (MD), together with their 95% confidence intervals (CI). The primary outcome measures were post-insertion abutment survival and patient satisfaction. Results: No eligible RCTs were identified for inclusion in the review. Conclusions: There is no evidence to support the use of titanium-reinforced zirconia abutments or pure zirconia abutments in patients restored with implant-supported single tooth restorations to improve post-insertion abutment survival and patient satisfaction. The protocol for this systematic review (One-piece versus two-piece zirconia abutments for implant-supported crowns) was registered on PROSPERO 2017:CRD42017054286 Available from http://www.crd.york.ac.uk/PROSPERO/display_record.asp?ID=CRD42017054286.

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[Ahlam A. Othman, Hesham A. Katamish and Atef Shaker. (2017); TITANIUM-REINFORCED ZIRCONIA ABUTMENTS VERSUS PURE ZIRCONIA ABUTMENTS FOR IMPLANT-SUPPORTED SINGLE TOOTH RESTORATIONS: A SYSTEMATIC REVIEW. Int. J. of Adv. Res. 5 (Aug). 1156-1168] (ISSN 2320-5407). www.journalijar.com

Ahlam A. Othman
Department of Fixed Prosthodontics, Sana`a University, Sana`a, Yemen.

DOI:

Article DOI: 10.21474/IJAR01/5168      
DOI URL: https://dx.doi.org/10.21474/IJAR01/5168

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