PMC2633156_01
The mesial retainer crown and the pontic seperated from the distal crown because of connector fracture.
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Having observed that the pontic was disconnected from the distal crown and additionally luting cement was detached from the mesial abutment tooth 22 previously; the crown and the still attached pontic was removed from the mesial abutment tooth (Figure 1).
The isolated restoration area utilizing rubber-dam.
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The area was isolated by use of a rubber-dam and grooves prepared both on the occlusal part of distal crown intraorally and on the palatal side of pontic extraorally (Figures 2 and 3).
Groove formed on the palatal side of the pontic.
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The area was isolated by use of a rubber-dam and grooves prepared both on the occlusal part of distal crown intraorally and on the palatal side of pontic extraorally (Figures 2 and 3).
The grooves were acid etched with 9 % hydrofluoric acid and silane coupling agent was applied.
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Al2O (Korox, Bego, Germany) with a chair side air-abrasion device (CoJet, 3M-ESPE, Germany) from a distance of 10 mm at a pressure of 250 kPa bar for 10 s. Air-particle abraded surfaces were treated by 9% hydrofluoric acid (Pulpdent Corporation, USA) for 5 min and finally a silane coupling agent (Pulpdent Corporation, USA) was applied (Figure 4) and air-dried.
FRC was cut 0,5 mm short of finish line of grooves.
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The mesial retainer crown cemented on the mesial abutment tooth.
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Tech, Finland) for 10 min in a dark container. The detached crown was cemented onto the mesial abutment tooth utilizing dual-cure composite resin luting cement (Panavia F 2.0, Kuraray, Japan) following the manufacturer's recommendations (Figure 6).
FRC adapted in the grooves utilizing transparent silicone block.
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Schaan, Liechtenstein) was applied prior to the application of the pre-impregnated FRC and the FRC was adapted in the grooves using a transparent silicone block. Supporting the pontic from the facial side the FRC and flowable composite light irradiated for 40 sec beyond the silicone block (Figure 7).
The restored area was covered with flowable composite.
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The restored area was covered with flowable composite filling the entire groove and covering the connector area, and light cured (Figure 8).
Occlusal view of the restored area after finishing and polishing procedures.
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Excess composite was removed with abrasive discs and the restored area was checked to avoid any occlusal interference (Figure 9).
Facial view of the restored area after 3 weeks.
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The patient was recalled in 3 weeks (Figure 10) and no complication was observed during 6 months clinic service.