PMC8181100_01
Pretreatment panoramic radiograph of initial patient presentation.
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A healthy 42-year-old man visited the Department of Prosthodontics of Dar Aluloom University seeking a replacement for his missing mandibular right first molar which had been extracted several years ago after unsuccessful endodontic treatment (Figure 1).
Pretreatment lateral view of mandibular arch.
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The clinical investigation revealed a narrow mandibular first molar space that contraindicated for implant placement (Figure 2).
Pretreatment occlusal view of mandibular arch.
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In addition, the mandibular right second molar had an occlusal amalgam restoration with occlusal recurrent caries (Figure 3).
The mandibular right second molar after preparation.
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The enamel surface was reduced by approximately 0.5 mm to provide a 3 x 4 mm enamel area for bonding (Figure 4).
Computer-aided designed framework (occlusal view).
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The stone cast was scanned with a laboratory scanner. The resin-bonded IRCFDP was designed as an inlay retainer with buccal and lingual retainer wings and a second premolar pontic and milled from an A2 zirconia shade block (Cercon HT Full Contour Zirconia; Dentsply Sirona) (Figures 5 and 6).
Computer-aided designed framework (buccal view).
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The stone cast was scanned with a laboratory scanner. The resin-bonded IRCFDP was designed as an inlay retainer with buccal and lingual retainer wings and a second premolar pontic and milled from an A2 zirconia shade block (Cercon HT Full Contour Zirconia; Dentsply Sirona) (Figures 5 and 6).
Evaluation of resin-bonded inlay-retained cantilever fixed dental prosthesis before cementation.
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After try-in stage (Figure 7) and to remove the residues of the saliva and blood, the bonding surface of resin-bonded IRCFDP was cleaned using hot water steamer.
Occlusal view of resin-bonded inlay-retained cantilever fixed dental prosthesis immediately after insertion.
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After that, the cement (Aureocem DC Automix, Promedica) was distributed over the resin-bonded IRCFDP bonding surfaces, and the prosthesis was seated in place (Figure 8).