A comparative study on the effect of different preparation designs and type of materials on the marginal fit of occlusal veneer
(2017). A comparative study on the effect of different preparation designs and type of materials on the marginal fit of occlusal veneer. EKB Journal Management System, 20(1), 15-20. doi: 10.21608/ajdsm.2020.107485
. "A comparative study on the effect of different preparation designs and type of materials on the marginal fit of occlusal veneer". EKB Journal Management System, 20, 1, 2017, 15-20. doi: 10.21608/ajdsm.2020.107485
(2017). 'A comparative study on the effect of different preparation designs and type of materials on the marginal fit of occlusal veneer', EKB Journal Management System, 20(1), pp. 15-20. doi: 10.21608/ajdsm.2020.107485
A comparative study on the effect of different preparation designs and type of materials on the marginal fit of occlusal veneer. EKB Journal Management System, 2017; 20(1): 15-20. doi: 10.21608/ajdsm.2020.107485

A comparative study on the effect of different preparation designs and type of materials on the marginal fit of occlusal veneer

Al-Azhar Journal of Dental Science
Article 3, Volume 20, Issue 1, January 2017, Page 15-20  XML PDF (386.92 K)
Document Type: Original Article
DOI: 10.21608/ajdsm.2020.107485
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Abstract
Purpose: to evaluate theeffectof two occlusalpreparation designsand threedifferent typesofceramicmaterials onthemarginalfitofbondedposteriorocclusalveneers.Statementof theproblem: Thinbondedposteriorocclusalveneersconstituteaconservativealternativeto traditionalmoreretentivecompletecoveragecrowns intreatmentofseverely worndentition. Materials and Methods: Sixty extracted human maxillary first molars were randomly distributed into twoequalgroups,30 teeth foreachaccording to thepreparationdesignas following: Non-ferruleand Ferrule (F). Eachofgroup (NFandF) weresubdivided into three subgroupsaccording to the typeofceramicmaterials:IPSe.max CAD (E),Lava™Ultimate CAD/CAM(L)andVITASUPRINITY® PC(S).Theocclusalveneerswerecementedover their respectiveteethwithresin cement TotalCem automix. Themarginalfitwasdeterminedby usingstereomicroscopewithdigitalcamerausingcomputersoftwarefortakingfourpointson eachaxialsurfaceofthe restoration so; therearesixteen readingspereachsample.Results: the meanvalueofverticalmarginalgapofLavaUltimaterecordedlowervalueinnoferuleand ferulegroup (28.4±3.9/34.95±4.02) respectively whichconsideredstatically significant differencefrom thantheothertwomaterials,followedbyIPSEmaxCadinferulegroup(49.7±5.6) then VITASUPRINITY in feruleandno ferule(50.8±7.43/51.9 ±3.70)respectively, then finallyIPSEmaxCad inno ferulegroup (52.4±5.5). Conclusion:Within the limitationof this study,itconcluded that, LavaUltimate occlusalveneers represent themoreadequate material to achievebettermarginaladaptabilityhowever,themarginalgapofthethreematerialswere within the clinicalacceptance range
 
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