Indian Journal of Forensic Medicine & Toxicology
  • Year: 2018
  • Volume: 12
  • Issue: 3

Evaluation of the effect of different finish lines and luting agents on marginal fit and microleakage in direct metal laser sintered copings-An in vitro study

  • Author:
  • Pallavi Chavan1, Thilak Shetty2, Mahesh Mundathaje3, Shobha J Rodrigues4,, Sharon Saldanha5, Umesh Pai6, Puneeth Hegde7
  • Total Page Count: 5
  • Page Number: 324 to 328

1Postgraduate Student, Department of Prosthodontics, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Mangalore, India

2Professor & Guide, Department of Prosthodontics, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Mangalore, India

3Associate Professor, Department of Prosthodontics, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Mangalore, India

4Professor & Head, Department of Prosthodontics, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Mangalore, India

5Associate Professor, Department of Prosthodontics, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Mangalore, India

6Associate Professor, Department of Prosthodontics, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Mangalore, India

7Assistant Professor, Department of Prosthodontics, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Mangalore, India

*Corresponding author: Dr Shobha J Rodrigues Professor & Head, Department of Prosthodontics, Manipal College of Dental Sciences, Manipal Academy of Higher Education (MAHE), Mangalore Email: shobha.j@manipal.edu

Online published on 16 August, 2018.

Abstract

The present study aimed to study the effect of finish line and luting cements on marginal gap and micro leakage in copings fabricated by Direct Metal Laser Sintering (DMLS)

28 maxillary premolars were divided in two groups depending upon finish line design. Co-Cr copings were fabricated with DMLS technique. Ceramic layering was done followed by cementation with two luting agents. These samples were sectioned and marginal gap was measured by stereomicroscope and also calibrated for microleakage.

The mean marginal gap value for crowns fabricated by DMLS was 139.73 ± 66.06 μm. The mean marginal gap was least for samples in Group B(b) 105.35±67.25 μm followed by Group B(a) 135.71±19.66 μm; Group A(a) 142.85±71.39 μm and highest value was seen for Group A(b) 175±82.28 μm. 85.7% samples had microleakage. Highest microleakage was seen with samples in Group A(a) and least in Group B(a). None of the values were found to have statistical significance with significance value less than 0.05.

There is no effect of finish line or luting cement on the marginal gap or microleakage on metal ceramic crown with copings fabricated by DMLS method.

Keywords

Direct Metal Laser Sintering, metal ceramic crowns, marginal gap