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A 10-Year Follow-Up of Different Intra-Radicular Retainers in Teeth Restored With Zirconia Crowns

A 10-Year Follow-Up of Different Intra-Radicular Retainers in Teeth Restored With Zirconia Crowns

Debora E Calabro, Alberto N Kojima, Vanessa Gallego Arias Pecorari, Cintia Helena Coury Saraceni, Markus B Blatz, Mutlu Özcan, Alfredo Mikail Melo Mesquita

Clin Cosmet Investig Dent. 2019 Dec 27;11:409-417.

PMID: 31920401

Abstract:

Purpose:
To evaluate the survival rate in restored teeth with three different types of retainers prior to the fixing of crowns with zirconia through this retrospective clinical study. It is unclear how the type of post and core rehabilitation, and type of resin cement affect the longevity of teeth restored with crowns.
Methods:
In a private clinic, a total of 101 retainers installed by the same professional between June 2008 and January 2018, with an average time of 58.2 months (4.8 years), were analyzed regarding the following factors: survival, cement and failure type. Three types of retainers were used according to the indications found in the literature: filling with Z250 light-cured composite resin, 22 elements; fiberglass post with Z250 light-cured composite resin, 45 elements; and cast metallic core in silver-tin alloy, 34 elements. The retainers were cemented with chemically cured cement, U100, U200, or Panavia F.
Results:
Data were subjected to Kaplan-Meier analysis (p=0.495). Although the study presented several limitations, no significant differences were observed in the success rates between the types of intra-radicular retainers and the type of cement. The success rates were as follows: metal core, 97.1%; fiberglass post, 95.6%; and filling, 100%. On average, failures occurred at 48.4 months.
Conclusion:
In view of the results, it is possible to conclude that the different retainers evaluated have similar survival rates.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
LS76617	Silver-tin alloy			Price

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