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Alternatively to cantilever the premolar implant is positioned distally to provide support for a mesial cantilever premolar pontic.
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Ideally the molar implant restoration should be positioned in the centre of the edentulous space but if a standard 3.75mm diameter implant results in a grossly over contoured crown.
Large mesiodistal space and narrow residual ridge often limit implant diameter and restrict implant positioning.
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Indications
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remaining dentition sound, stable occlusion
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mesial distal space 11-14mm.
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long axis of the implant 90 degrees to the occlusal plane
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| Transmuosal Approcah (single stage)
Combi implants deliver excellent primary stability sufficient to permit the placement of a healing abutment on implant insertion. After three months soft tissue healing is complete and impressions can be taken.
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A friction fit abutment does not require a screw, eliminating micro leakage associated with the micro gap. The crown is made from a composite restorative material bonded directly to the friction abutment.
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Premolarised posterior occlusion has a narrow occlusal table with low cusp angles reducing lateral load. |
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The cantilever premolar is very amenable to routine oral hygiene procedures and well tolerated by patients |
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Radigraph demonstrating excellent marginal bone level after first year
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