title: A comparative study on microgap of premade abutments and abutments cast in base metal alloys.
abstract: The study compared the marginal accuracy of premade and cast abutments. Premade titanium, stainless steel, and gold abutments formed the control groups. Plastic abutments were cast in nickel-chromium, cobalt-chromium and grade IV titanium. The abutment/implant interface was analyzed. Analysis of variance and Duncan's multiple range test revealed no significant difference in mean marginal microgap between premade gold and titanium abutments and between premade stainless steel and cast titanium abutments. Statistically significant differences (P < .001) were found among all other groups.
authors.affiliation: 1  Department of Prosthodontics, Educare Institute of Dental Sciences, Malappuram, Kerala, India.
authors.forename: Jaini Jaini
authors.initials: JJ
authors.lastname: Lalithamma
authors.forename: Sreekanth Anantha
authors.initials: SA
authors.lastname: Mallan
authors.forename: Pazhani Appan
authors.initials: PA
authors.lastname: Murukan
authors.forename: Rita
authors.initials: R
authors.lastname: Zarina
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D002858:Chromium Alloys / Q000737:chemistry; D000044:Dental Abutments; D003722:Dental Alloys / Q000737:chemistry*; D003734:Dental Casting Investment / Q000737:chemistry; D045662:Dental Etching / Q000379:methods; D059605:Dental Implant-Abutment Design; D018772:Dental Marginal Adaptation; D017267:Dental Prosthesis Design; D006047:Gold Alloys / Q000737:chemistry; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008422:Materials Testing; D010781:Photography / Q000379:methods; D013193:Stainless Steel / Q000737:chemistry; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry; D019415:Torque
chemical_list: D002858:Chromium Alloys; D003722:Dental Alloys; D003734:Dental Casting Investment; D006047:Gold Alloys; D013193:Stainless Steel; D014025:Titanium; D000537:Aluminum Oxide
keywords: cast abutments; internal hex implant; microgap; premade abutments; screw loosening