Silane Heat Treatment Could Eliminate the Hydrofluoric Acid Etching of Lithium Disilicate Overlays: A Four-Year Follow-Up

Figure 5

Four-year follow-up of the restorations: occlusal view (a); buccal view (b); lingual view (c); a close-up image of the overlay-tooth interface (d), white arrows pointing to the borders of the restorations; radiograph examination (e, f).

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