The Invisible Onlay - Parodontologie · The Invisible Onlay Dr. Michael Hohaus, Study Club # 22...
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The Invisible Onlay Dr. Michael Hohaus, Study Club # 22 Düsseldorf-Rheingold, Germany Athens, 27th June 2008 Preparation • Build up • Occlusal reduction: • 1,5 mm on the lingual,1 mm on the buccal • Proximal box preparation • Handinstrumentation • Bevels • Microbevel on the bucal cusp Indication • Structurally compromised maxillary posterior teeth • Underminded and weakend cusps • Poor enamel quality • Wide and subgingival cavity • Endodontic treated teeth • Bruxism • No anterior guidance • Protection against fracture • Occlusal reconstruction • Predictable longevity¹ Main Characteristics • A modification of the traditional onlay preparation to minimize gold display on the occlusal buccal of upper bicuspids and molars • lingual cusp needs to have adequate strength to resist the occlusal forces • Helps prevent cusp fracture and relief sensitivity when tiny fractures are present • A thin layer of gold can protect fragile areas of teeth • The gold restoration itself will not fracture, no chipping! Studies ¹Donavan TE, Retrospective Clinical Evaluation of 1314 Cast Gold Restorations in Service from 1 to 51 years, J Esthet Restor Dent 2004;16: 194 More Information: www.RVTucker.org Required Instruments • Straight fissure bur (H21.314.010) (Brassler) • Egg shaped finishing bur ( H379.314.014) • Handinstruments (Suter) • Cuttle Fine Disk (Moore) 3 years in service
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Transcript of The Invisible Onlay - Parodontologie · The Invisible Onlay Dr. Michael Hohaus, Study Club # 22...
The Invisible OnlayDr. Michael Hohaus, Study Club # 22 Düsseldorf-Rheingold, Germany
Athens, 27th June 2008
Preparation• Build up• Occlusal reduction: • 1,5 mm on the lingual,1 mm on the buccal• Proximal box preparation• Handinstrumentation• Bevels• Microbevel on the bucal cusp
Indication• Structurally compromised maxillary posterior teeth• Underminded and weakend cusps• Poor enamel quality• Wide and subgingival cavity• Endodontic treated teeth• Bruxism• No anterior guidance• Protection against fracture• Occlusal reconstruction• Predictable longevity¹
Main Characteristics• A modification of the traditional onlay preparation to
minimize gold display on the occlusal buccal of upperbicuspids and molars
• lingual cusp needs to have adequate strength to resistthe occlusal forces
• Helps prevent cusp fracture and relief sensitivity whentiny fractures are present
• A thin layer of gold can protect fragile areas of teeth• The gold restoration itself will not fracture, no chipping!
Studies¹Donavan TE, Retrospective Clinical Evaluation of 1314 Cast Gold Restorations in Service from 1 to 51 years, J Esthet Restor Dent 2004;16: 194
More Information: www.RVTucker.org
Required Instruments• Straight fissure bur (H21.314.010) (Brassler)• Egg shaped finishing bur ( H379.314.014)• Handinstruments (Suter)• Cuttle Fine Disk (Moore)
3 years in service
