An In-Vitro Comparison of the Retention of Cement-Retained Implant-Supported Crowns with and Without Circumferential Grooves on Implant Abutment.
Journal Title: International Journal of Medical Science and Innovative Research (IJMSIR) - Year 2018, Vol 3, Issue 12
Abstract
Aim: To evaluate and compare retentive property of provisional and permanent luting agents within two different group of implant systems by using implant abutments with and without circumferential grooves on it. Materials And Methods: Totally 60 implant abutments are to be taken, in which Group A(Adin Dental Implant Systems Ltd.) will consist of 30 abutments and similarly Group B(MIS Implants Technologies Ltd.) will consist of 30 abutments. Both Group A and Group B will again be divided into subgroup a (with circumferential grooves) and subgroup b (without circumferential grooves) with 15 abutments each. Further in these subgroups of 15 abutments 5 abutments each are to be taken to check retentive force of three luting agents ie.non-eugenol provisional cement, resin modified glass inomer cement and zinc phosphate cement. 15 identical cast copings will be prepared to fit all 60 abutments. The castings will be cemented to each group of abutments with above mentioned luting agents. After thermal cycling and storage for 6 days in a water bath, retention test is to be done with a tensile testing machine (Instron) (5mm/min) and retentive forces will be recorded. Data will be subjected to One way ANOVA test and student` t’ test. Results: F=0.21for ZO, 0.18 for RMGIC, 0.69 for ZnPO4<3.24 for p=0.05 shows no significant difference between all subgroups within the each cement.F=53.37 for Group A, 15.82 for Group B>2.62 for p=0.05 shows significant difference between all cements within the group a and group b. Conclusion: Circumferential grooves on implant abutments (subgroup a of both the Groups) gives better retention when compared with standard machined(plain) abutments and Resin modified GIC gives 10 times better retention than non- eugenol and 2 times better retention than zinc phosphate cement. Clinical Implications: Retention of restoration depends on the surface of the abutment as well as the luting agents used. Incorporation of retentive grooves can enhance retention of prosthesis especially in situation of short abutments.
Authors and Affiliations
Dr Ajay Singh*
Keywords
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