Survival of Chemically Modified Titanium Surfaced Implants in Irradiated Jaws of Oral Cancer Patients

Mehmet Yaltirik¹, Bilge Gökçen Röhlig², Meltem Özdemir Karataş², Melike Ordulu Sübay^1*, Rüştü Cem Tanyel¹, Meltem Koray¹

¹Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Istanbul University, Istanbul, Turkey.
²Department of Prosthodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkey.

DOI: 10.4236/ojst.2015.57025                

Abstract

Objective: To investigate the clinical performance of implants with chemically modified surfaces in irradiated bone in a period of five-years. Patients & Methods: 15 (6 females, 9 males, 50.2 years with a range of 38 - 60 years) patients who had been operated for oral tumors and had undergone radiotherapy were enrolled and 40 SLActive surface implants were placed (24 in the maxilla, 16 in the mandible). Implants were allowed to integrate for a period of 90 days and the stability of the implants was measured with Resonance Frequency Analyzer/Osstell? Mentor (Integration Diagnostics, Savedalen, Sweden) at implant placement, 30 days later and at the end of the 90^th day. Patients follow up periods after the implant placement varied from 20 months to 60 months (mean: 45 months). Results: Two implants were lost in maxilla in healing period as a result of osseointegration failure. The survival rate was 95%. During the observation period, totally 4 implants were lost. The overall success rate was 90%. 3 of the lost implants were in maxilla and one was in mandible. The initial ISQ values of the implants differed from 20 - 71; the second values were between 24 - 71 and the last values were between 30 - 89. The implants which were lost could not show a value greater than 35. Conclusion: There was no any complication on the SLActive surface implant placed bones due to irradiation. Within the limitations of this study, it may be concluded that osseointegrated implants can be placed in irradiated bones, unless a careful patient selection and treatment planning is performed.

Keywords

Irradiation, Resonance Frequency Analysis, SLActive, Success Criteria

Conflicts of Interest

The authors declare no conflicts of interest.

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