Blog Archive

Search This Blog

Saturday, December 1, 2018

Comparison of the effects of cement removal from zirconia and titanium abutments: An in vitro study

Publication date: Available online 1 December 2018

Source: The Journal of Prosthetic Dentistry

Author(s): Ankur Dahiya, Nadim Z. Baba, Mathew T. Kattadiyil, Charles J. Goodacre, Akshita Mann

Abstract
Statement of problem

Excess cement around dental implants is a significant cause of peri-implant inflammation. Research has focused on approaches to cement removal, the type of cement used, and the different instruments used for cement removal with titanium abutments. However, data comparing zirconia with titanium abutments are lacking.

Purpose

The purpose of this in vitro study was to compare the effectiveness of excess cement removal from zirconia and titanium custom abutments using an explorer and to compare the effects of cement removal on the abutment surfaces.

Material and methods

Implant analogs were placed in a cast in the position of the 2 maxillary central incisors. After creating similar emergence profiles for both the implant abutments, 18 zirconia and titanium custom abutments were fabricated with 1-mm subgingival finish lines on the facial and interproximal areas and an equigingival finish line on the palatal side. The crowns were cemented with zinc oxide-eugenol cement, and a steel explorer was used to remove the excess cement. All abutments were analyzed under a scanning electron microscope for cement remnants and scratches.

Results

The mean surface area of cement remnants on the zirconia abutments was 778 ±113 μm2, and for titanium abutments, it was 1123 ±252 μm2, which in terms of the mean percentage area was 3.27% of the total surface area of zirconia and 4.71% of titanium abutments. Only a few abutments from each group showed scratches, and no deep scratches or gouges were observed.

Conclusions

Zirconia and titanium abutments had statistically similar cement remnants. Scratches were observed on only a few specimens.



from OroFacial via a.sfakia on Inoreader https://ift.tt/2BL86qr

No comments:

Post a Comment

Note: Only a member of this blog may post a comment.

Blog Archive

Pages

   International Journal of Environmental Research and Public Health IJERPH, Vol. 17, Pages 6976: Overcoming Barriers to Agriculture Green T...