Original Research Article
Year: 2020 | Month: June | Volume: 7 | Issue: 6 | Pages: 106-112
Effects of Different Surface Treatments on Retention of Implant Supported Cement Retained Bridge with Short Abutment- An In Vitro Study
Isha Sethia, Pragati Kauranib, Narendra Padiyar Uc, Sudhir Meenab, Devender Pal Singhd, Ajay Guptae
aPost Graduate, bProfessor, cProfessor, Head of the department, dReader, eSenior Lecturer,
Department of Prosthodontics, crowns & Bridges, Mahatma Gandhi Dental College and hospital, Jaipur, Rajasthan, India
Corresponding Author: Isha Sethi
ABSTRACT
Aim: To evaluate the effect of surface treatments of implant abutment and metal framework on the retention of implant-supported cement-retained bridge with short abutments.
Methodology: Straight implant abutments of sizes (4.3 mm × 4 mm) and analogues were selected and mounted on the acrylic block. Four such assemblies were made. 40 number of 3-unit metal framework were casted and divided into four groups. Group 1- (control group) No modification. Group 2- The abutments were subjected to surface modifications by bur, cementing surface of the framework was sandblasted. Group 3- The abutments were subjected to surface modifications by bur and framework was sandblasted and also subjected to alloy primer (M.L. Primer Shofu Inc.) Group 4- Both the abutment and framework are subjected to sandblasting and alloy primer. The framework was cemented with a Resin cement (Panavia F). Retention tests were conducted with a universal testing machine (5 mm/min), and tensile bond strengths were recorded.
Statistics: Data were subjected to one-way analysis of variance, Post Hoc Tukey’s significant difference test, (α = 0.05).
Results: The mean retentive force for Group 1 was 200.70 +- 22.930 N, for Group 2 was 460.70 +- 96.40 N, for Group 3 was 749.80 +- 134.474 N and for Group 4 was 658.00 +- 20.025 N. Group 3 showed highest mean peak force required for dislodging the metal
framework from the abutments after cementation than all the other groups at
749.80 N.
Conclusion: Modification of the implant abutment by bur and sandblasting while modification of 3-unit metal framework by sandblasting and alloy primer showed the highest retention and demonstrated the significant difference in the tensile bond strength than all other groups.
Keywords: abutment; alloy primer; implant supported fixed restoration; retention; sandblasting
[PDF Full Text]