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Evaluation of change in implant abutment after teeth surface modifications


Khushbu Mishra1, Priya singh2, Mohammad Kashif Noorani3, Kumar Adarsh4, Mohammad Nabeel Kalburgi5, Manisha Mallik6



1MDS, Consultant periodontist, Patna, Bihar, India; 2MDS, Consultant prosthodontist & Oral Implantologist, Patna, Bihar, India; 3Senior Lecturer, Department of Prosthodontics, Dr. B.R. Ambedkar Institute of Dental Sciences & Hospital. Patna, Bihar, India; 4Senior Lecturer, Department of Orthodontics, Dr. B.R. Ambedkar Institute of Dental Sciences & Hospital. Patna, Bihar, India; 5Senior lecturer, Department of Prosthodontics, PMNM Dental College and Hospital, Bagalkot, India; 6Senior lecturer, Department of Periodontology, Buddha institute of dental sciences and hospital, Patna, India;



Khushbu Mishra - Khushbumishrakunwar@gmail.com; Priya singh -singh.piyu5788@gmail.com; Mohammad Kashif Noorani - kashnoor86@gmail.com; Kumar Adarsh - kumarkumaradarsh@gmail.com; Mohammad Nabeel Kalburgi - drnabeelkprostho@gmail.com;
Manisha Mallik - manishamallik@gmail.com


Article Type

Research Article



Received December 29, 2020; Revised January 26, 2021; Accepted January 29, 2021, Published January 31, 2021



The surface modifications in teeth increase the retentive strength of cemented castings by providing micro as well as macro retentive ridge and groove patterns. Restoring the dental implants with cement-retained prosthesis is well known. Therefore, it is of interest to compare retentive property of implant abutments with and without circumferential grooves. Hence, 20 straight shoulder type titanium abutments were with abutment screws as well as prefabricated plastic copings and corresponding 12 mm-long stainless steel laboratory implant analogs were used. The abutments were divided into two subgroups of 10 abutments each: without grooves and with grooves. After
thermocycling and storing the cemented abutments in water at 37C water for 6 days they were assembled in the Universal testing machine and subjected to a pullout test (retention) at a crosshead speed of 5.0mm/min to record forces in Newton. Data suggest that the addition of
grooves increased the retention. The mean retentive forces of standard machined abutments (plain) cemented with Resin modified GIC showed 339.34 N. Retention increased by 667.39N after addition of circumferential grooves. The surface modification of an implant abutment by means of circumferential grooves is an effective method of improving the retention of cast crowns cemented with resin modified GIC especially in short abutments.



luting agents; circumferential grooved implant abutments; retentive strength.



Mishra et al. Bioinformation 17(1): 157-161 (2021)


Edited by

P Kangueane






Biomedical Informatics



This is an Open Access article which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. This is distributed under the terms of the Creative Commons Attribution License.