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Volume 30 , Issue 4
July/August 2015

Pages 937–944


Implant-Supported Telescopic Crown-Retained Overdentures for Oral Rehabilitation of Patients with Severe Bony Defects: A 5-Year Retrospective Study

Duohong Zou, DDS, PhD/Feng Wang, DDS, MS/Yiqun Wu, DDS, PhD/Wei Huang, DDS/Chenping Zhang, DDS, PhD/Zhiyuan Zhang, DDS, PhD


PMID: 26252047
DOI: 10.11607/jomi.3697

Purpose: To evaluate the performance of dental implant–supported telescopic crown (TC)–retained overdentures to restore the oral function of patients who have insufficient jawbone volume resulting from tumor resection or trauma. Materials and Methods: From January 2004 to December 2008, implant-supported TC-retained overdentures were used to restore the oral function of patients with severe bony defects resulting from tumor resection or trauma. Clinical data, including implant success and survival rates, biologic and mechanical complications, prosthodontic maintenance efforts, and patient satisfaction, were analyzed annually after delivery of the final prostheses. Results: Twenty-four patients were treated, and a total of 88 implants were inserted to support TC-retained overdentures. The mean modified plaque index of implants remained low (<20%), and the majority of implants (>76.3%) in the study showed the absence of bleeding on probing at follow-up visits. Peri-implant marginal bone loss (MBL) ranged from 0.8 to 1.2 mm. There was no statistically significant difference in the MBL between maxillary and mandibular implants (P = .43). The implant success rate was 100% after 5 years, and the prosthodontic maintenance and complication rate was 0.22 times per year. More than 90% of patients were satisfied with the restoration of their oral function using TCs. Conclusion: Based on our study of 24 patients treated with TC-retained overdentures, it appears that this treatment may be a viable option for patients with insufficient jawbone volume.


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