Özet:

The causes of the formation of Dentoalveal defects can be gathered into three groups: parental, developmental and acquired, and they can cause aesthetic, fonetic and functional problems in patients due to their localization. The treatment requires a multidisciplinary approach and a case-specific planning. The presentation of this fact describes the protetic rehabilitation with dental implant-backed proteins with different holding systems of two patients with dentoalveolar defects.       After clinical and radiographic examinations, patients were told about all the treatment options consisting of implant-backed fixed proteins, dental-backed fixed proteins and moving proteins. In the first patient, the mandibular defect on the left side is restored using special abutments for the person with the siman holding produced by CAD-CAM; in the second patient, the mandibular defect on the left side is restored using multi-unit abutments with the defect holding.       The patient’s aesthetic and functional expectations were successfully met after treatment. No complications were observed in the 1 week examinations of patients informed about oral hygiene and 3 months later re-called for examination.  Keywords: Dentoalveolar defect, on-implant fixed prothesis, siman holding abutment, multi-unit abutment.

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