An observational study in Dental Implants, sponsored by Aristotle University Of Thessaloniki. Completed at 1 site in Greece. Per ClinicalTrials.gov, last updated 2024-08-07.
Sponsored by Aristotle University Of Thessaloniki · Observational
A retrospective examination was performed on patients who had received treatment with dental implants supporting a prosthesis with a cantilever extension for at least 10 years of function.
The successful use of osseointegrated dental implants in replacing missing teeth has been adequately documented, with multiple studies reporting long-term success exceeding 10 years of function. However, there is still insufficient evidence in cases where availability of adequate bone precludes ideal placement of implants. Examples of cases like these include the posterior maxilla when pneumatization of the maxillary sinus does not allow for placement of implants, or areas of thin bone that would require extensive guided bone regeneration (GBR) techniques and increase patient morbidity. In such cases the use of fixed dental prostheses (FDPC's) with cantilever extension has been suggested in lieu of sinus lift techniques or GBR procedures. However, few studies have actually addressed the long-term success of such FDPC's, both from a surgical and a prosthetic standpoint, especially in posterior areas of the mandible and maxilla where loading forces are expected to be higher.
Two studies addressed this issue in the early 2000's with successful outcomes reported for an observation period of 5 years. Others reported similar outcomes after a mean observation period of 5.6 years. The 5th Consensus Conference of the European Association of Osseointegration (EAO) suggested that such treatment can be recommended to patients, albeit with little available evidence and limited follow-up of cases. Recent studies have delved further into this issue, offering longer follow-up data of more than 10 years of function. They included both 2 unit FDP's anchored on one implant and 3 unit FDP's anchored on two implants with cantilever extensions. They concluded that this treatment modality is a reliable option with long-term stability and few complications, mainly prosthetic.
The aim of this retrospective study is to offer further data on the long-term success and complications when at least two dental implants are used to support a FDPC in the posterior areas of both jaws, after at least 10 years of function.
Aristotle University Of Thessaloniki is the lead sponsor of 281 studies on the registry; 57 are open to participants now.
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The patient sample of this study is part of a retrospective evaluation of patients who received treatment with dental implants in a private periodontal practice environment between 2000 and 2013, with at least 10 years of functional loading of their prosthetic work. Patients who received Fixed Dental Prostheses with Cantilever Extension were included in this study sample
The inclusion criteria were as follows:
The exclusion criteria were as follows:
A retrospective study on the radiographic and clinical findings of implant-supported dental prostheses with cantilever extensions in place and function for at least 10 years
Mean bone loss
Mean bone loss measured from the difference of the bone levels at time of implant placement compared to the time of examination
Time frame: 10 years at least
Mean Probing Depth
The average probing depth at the time of examination at each implant site
Time frame: 10 years at least
Biologic complications
Recording of biologic complications around implants (health, peri-implant mucositis, peri-implantitis
Time frame: 10 years at least
Technical complications
Recording of prosthetic complications encountered at the dental prostheses with cantilever extensions
Time frame: 10 years at least
Plan to share: Undecided
Ran from May 2024 to primary completion in Jul 2024, 2 months.
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