Elsevier

Dental Abstracts

Volume 61, Issue 6, November–December 2016, Pages 323-324
Dental Abstracts

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Replacing failed implants

https://doi.org/10.1016/j.denabs.2016.07.044Get rights and content

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Background

Clinicians who perform implant therapy are achieving high rates of survival and excellent esthetic results. However, with the increase in popularity of implant therapy comes an increase in failures. It’s vital to thoroughly evaluate the patient-related, implant-related, and implant site−related factors that can have an impact on the success or failure of the treatment. Failures can occur early or late. Osseointegration is the direct structural and functional connection between the alloplastic

Methods

The electronic literature search focused on the PubMed-MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, and Cochrane Oral Health Group Trials Register databases up to November 2014. Selections had to have a minimum of 10 subjects enrolled and to report clinical outcomes with a follow-up of at least 12 months after implant placement. Implant survival and nonmodifiable and modifiable factors for second and third implant replacement attempts were documented. A total of five

Results

A moderate risk of bias was determined for the studies. The 396 patients ranged in age from 19.5 to 84 years (mean 50.13 years). Seventy-two patients had preexisting controlled chronic periodontal disease, four had diabetes with good glycemic control, and two had osteoporosis. Seventy-eight patients were smokers.

The 470 implants were designed to replace failed ones, with 31 implants placed where previous implants had failed twice. Implant length was between 8 and 16 mm, with diameters ranging

Discussion

Implant replacement can be considered for failed implants a second and even a third time, depending on the risk factors of the patient, implant, and site. Any modifiable risk factors should be addressed to improve outcomes.

Clinical Significance

Clearly, the initial failed implant must be retrieved with meticulous removal of granulation tissue at the site and the use of wider implants with treated surfaces. Extraction of the implant should be performed as gently as possible. Various bone grafting

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Zhou W, Wang F, Monje A, et al: Feasibility of dental implant replacement in failed sites: A systematic review. Int J Oral Maxillofac Implants 31:535-545, 2016

Reprints available from Y Wu, Dept of Oral-maxillofacial Implantology, Shanghai Ninth People’s Hosp, Shanghai Jiao Tong Univ, School of Medicine, No. 639 Zhizaoju Rd, Shanghai, 200011, China; e-mail: [email protected]

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