Retrospective evaluation of the clinical performance of direct composite restorations using the snow-plow technique: up to 4 years follow-up

• Ailreza Borouziniat ^[1] ; Hossain Khaki ^[2] ; Sara Majidinia ^[3]
  1. [1] Dental Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. Department of restorative dentistry, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
  2. [2] Student Research Committee, School Of Dentistry, Mashhad University Of Medical Sciences, Mashhad, Iran. Post graduate student of orthodontics, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
  3. [3] Dental Materials Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. Department of restorative dentistry, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran

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• Localización: Journal of Clinical and Experimental Dentistry, ISSN-e 1989-5488, Vol. 11, Nº. 11 (November), 2019, págs. 964-968
• Idioma: inglés
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• Resumen

  • To evaluate the clinical performance of direct composite restorations using the snowplow technique with up to 4 years of follow-up.

    In this retrospective study, 101 class II composite restorations which were placed in permanent molars (n = 19) and premolars (n = 82) in 85 patients by the snowplow technique, were evaluated according to the modified USPHS criteria. A Kaplan-Meier analysis with a 95% confidence level was used to calculate the survival probability.

    Of the 101 teeth examined, tooth failure was identified in 8 teeth due to secondary caries (3%), marginal gap (2%), marginal discoloration (1%) and restoration breakdown (2%) which required replacement of the whole restoration. Sixteen teeth achieved a Bravo score and just needed to be repaired. The results of the Kaplan-Meier analysis regarding overall survival estimates of composite-treated teeth using the snowplow technique at 1-, 2-, 3- and 4- year follow-ups were 99%, 96.2%, 89.6% and 79% respectively. The median survival times of composite restorations using the snowplow technique were 46.49 ± 11.47 month.

    This retrospective study showed that application of a flowable composite as a liner using the snowplow technique does not improve the clinical survival of posterior composite restorations.