Clinical and Radiographic Outcomes of Implant-supported Prostheses With Cantilever Extensions After 10 Years of Function
NCT ID: NCT06534398
Last Updated: 2024-08-07
Study Results
Results pending
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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Recruitment Status
COMPLETED
Total Enrollment
19 participants
Study Classification
OBSERVATIONAL
Study Start Date
2024-05-01
Study Completion Date
2024-07-30
Brief Summary
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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.
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Detailed Description
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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.
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.
Conditions
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Dental Implants
Study Design
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Observational Model Type
COHORT
Study Time Perspective
RETROSPECTIVE
Interventions
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Dental implant prosthesis with cantilever extension
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
Intervention Type
DEVICE
Eligibility Criteria
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Inclusion Criteria
* Age 18 years and over
* Systemic health or controlled medical conditions
* Periodontal health, either no periodontal disease, or previously treated periodontal disease and under a supportive periodontal maintenance (SPT) program
* Smokers were included but encouraged to enter a smoking cessation program
* Patients with bruxism or parafunctional habits were included.
* Systemic health or controlled medical conditions
* Periodontal health, either no periodontal disease, or previously treated periodontal disease and under a supportive periodontal maintenance (SPT) program
* Smokers were included but encouraged to enter a smoking cessation program
* Patients with bruxism or parafunctional habits were included.
Exclusion Criteria
* Uncontrolled medical conditions
* Active uncontrolled periodontal disease
* Inability to present for the reevaluation appointment
* Immediate implant placement
* Cantilever units that were part of full-arch restorations
* Cantilever units that were connected to a single implant
* Non-existent opposing dentition
* Active uncontrolled periodontal disease
* Inability to present for the reevaluation appointment
* Immediate implant placement
* Cantilever units that were part of full-arch restorations
* Cantilever units that were connected to a single implant
* Non-existent opposing dentition
Eligible Sex
ALL
Accepts Healthy Volunteers
Yes
Sponsors
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Aristotle University Of Thessaloniki
OTHER
Sponsor Role
lead
Responsible Party
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Responsibility Role
SPONSOR
Principal Investigators
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Ioannis Vouros, DDS, PhD
Role: STUDY_CHAIR
Professor of Periodontology
Locations
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Aristotle University of Thessaloniki, School of Dentistry
Thessaloniki, Thessaloniki, Greece
Site Status
Countries
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Greece
References
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Wennstrom J, Zurdo J, Karlsson S, Ekestubbe A, Grondahl K, Lindhe J. Bone level change at implant-supported fixed partial dentures with and without cantilever extension after 5 years in function. J Clin Periodontol. 2004 Dec;31(12):1077-83. doi: 10.1111/j.1600-051X.2004.00603.x.
Reference Type
RESULT
Schmid E, Morandini M, Roccuzzo A, Ramseier CA, Sculean A, Salvi GE. Clinical and radiographic outcomes of implant-supported fixed dental prostheses with cantilever extension. A retrospective cohort study with a follow-up of at least 10 years. Clin Oral Implants Res. 2020 Dec;31(12):1243-1252. doi: 10.1111/clr.13672. Epub 2020 Oct 17.
Reference Type
RESULT
Aglietta M, Iorio Siciliano V, Blasi A, Sculean A, Bragger U, Lang NP, Salvi GE. Clinical and radiographic changes at implants supporting single-unit crowns (SCs) and fixed dental prostheses (FDPs) with one cantilever extension. A retrospective study. Clin Oral Implants Res. 2012 May;23(5):550-5. doi: 10.1111/j.1600-0501.2011.02391.x. Epub 2012 Jan 17.
Reference Type
RESULT
Araujo MG, Lindhe J. Peri-implant health. J Periodontol. 2018 Jun;89 Suppl 1:S249-S256. doi: 10.1002/JPER.16-0424.
Reference Type
RESULT
Baumer A, Toekan S, Saure D, Korner G. Survival and success of implants in a private periodontal practice: a 10 year retrospective study. BMC Oral Health. 2020 Mar 30;20(1):92. doi: 10.1186/s12903-020-01064-z.
Reference Type
RESULT
Berglundh T, Armitage G, Araujo MG, Avila-Ortiz G, Blanco J, Camargo PM, Chen S, Cochran D, Derks J, Figuero E, Hammerle CHF, Heitz-Mayfield LJA, Huynh-Ba G, Iacono V, Koo KT, Lambert F, McCauley L, Quirynen M, Renvert S, Salvi GE, Schwarz F, Tarnow D, Tomasi C, Wang HL, Zitzmann N. Peri-implant diseases and conditions: Consensus report of workgroup 4 of the 2017 World Workshop on the Classification of Periodontal and Peri-Implant Diseases and Conditions. J Clin Periodontol. 2018 Jun;45 Suppl 20:S286-S291. doi: 10.1111/jcpe.12957.
Reference Type
RESULT
Chappuis V, Buser R, Bragger U, Bornstein MM, Salvi GE, Buser D. Long-term outcomes of dental implants with a titanium plasma-sprayed surface: a 20-year prospective case series study in partially edentulous patients. Clin Implant Dent Relat Res. 2013 Dec;15(6):780-90. doi: 10.1111/cid.12056. Epub 2013 Mar 18.
Reference Type
RESULT
Derks J, Schaller D, Hakansson J, Wennstrom JL, Tomasi C, Berglundh T. Effectiveness of Implant Therapy Analyzed in a Swedish Population: Prevalence of Peri-implantitis. J Dent Res. 2016 Jan;95(1):43-9. doi: 10.1177/0022034515608832.
Reference Type
RESULT
Frisch E, Wild V, Ratka-Kruger P, Vach K, Sennhenn-Kirchner S. Long-term results of implants and implant-supported prostheses under systematic supportive implant therapy: A retrospective 25-year study. Clin Implant Dent Relat Res. 2020 Dec;22(6):689-696. doi: 10.1111/cid.12944. Epub 2020 Sep 23.
Reference Type
RESULT
Gracis S, Michalakis K, Vigolo P, Vult von Steyern P, Zwahlen M, Sailer I. Internal vs. external connections for abutments/reconstructions: a systematic review. Clin Oral Implants Res. 2012 Oct;23 Suppl 6:202-16. doi: 10.1111/j.1600-0501.2012.02556.x.
Reference Type
RESULT
Halg GA, Schmid J, Hammerle CH. Bone level changes at implants supporting crowns or fixed partial dentures with or without cantilevers. Clin Oral Implants Res. 2008 Oct;19(10):983-90. doi: 10.1111/j.1600-0501.2008.01556.x.
Reference Type
RESULT
Hammerle CHF, Cordaro L, Alccayhuaman KAA, Botticelli D, Esposito M, Colomina LE, Gil A, Gulje FL, Ioannidis A, Meijer H, Papageorgiou S, Raghoebar G, Romeo E, Renouard F, Storelli S, Torsello F, Wachtel H. Biomechanical aspects: Summary and consensus statements of group 4. The 5th EAO Consensus Conference 2018. Clin Oral Implants Res. 2018 Oct;29 Suppl 18:326-331. doi: 10.1111/clr.13284.
Reference Type
RESULT
Karoussis IK, Salvi GE, Heitz-Mayfield LJ, Bragger U, Hammerle CH, Lang NP. Long-term implant prognosis in patients with and without a history of chronic periodontitis: a 10-year prospective cohort study of the ITI Dental Implant System. Clin Oral Implants Res. 2003 Jun;14(3):329-39. doi: 10.1034/j.1600-0501.000.00934.x.
Reference Type
RESULT
Lekholm U, Grondahl K, Jemt T. Outcome of oral implant treatment in partially edentulous jaws followed 20 years in clinical function. Clin Implant Dent Relat Res. 2006;8(4):178-86. doi: 10.1111/j.1708-8208.2006.00019.x.
Reference Type
RESULT
Mombelli A, van Oosten MA, Schurch E Jr, Land NP. The microbiota associated with successful or failing osseointegrated titanium implants. Oral Microbiol Immunol. 1987 Dec;2(4):145-51. doi: 10.1111/j.1399-302x.1987.tb00298.x. No abstract available.
Reference Type
RESULT
Pjetursson BE, Zarauz C, Strasding M, Sailer I, Zwahlen M, Zembic A. A systematic review of the influence of the implant-abutment connection on the clinical outcomes of ceramic and metal implant abutments supporting fixed implant reconstructions. Clin Oral Implants Res. 2018 Oct;29 Suppl 18:160-183. doi: 10.1111/clr.13362.
Reference Type
RESULT
Renvert S, Persson GR, Pirih FQ, Camargo PM. Peri-implant health, peri-implant mucositis, and peri-implantitis: Case definitions and diagnostic considerations. J Periodontol. 2018 Jun;89 Suppl 1:S304-S312. doi: 10.1002/JPER.17-0588.
Reference Type
RESULT
Roccuzzo M, Bonino L, Dalmasso P, Aglietta M. Long-term results of a three arms prospective cohort study on implants in periodontally compromised patients: 10-year data around sandblasted and acid-etched (SLA) surface. Clin Oral Implants Res. 2014 Oct;25(10):1105-12. doi: 10.1111/clr.12227. Epub 2013 Jul 19.
Reference Type
RESULT
Romeo E, Tomasi C, Finini I, Casentini P, Lops D. Implant-supported fixed cantilever prosthesis in partially edentulous jaws: a cohort prospective study. Clin Oral Implants Res. 2009 Nov;20(11):1278-85. doi: 10.1111/j.1600-0501.2009.01766.x. Epub 2009 Aug 26.
Reference Type
RESULT
Storelli S, Del Fabbro M, Scanferla M, Palandrani G, Romeo E. Implant-supported cantilevered fixed dental rehabilitations in fully edentulous patients: Systematic review of the literature. Part II. Clin Oral Implants Res. 2018 Oct;29 Suppl 18:275-294. doi: 10.1111/clr.13310.
Reference Type
RESULT
Other Identifiers
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Cantilever implants
Identifier Type: -
Identifier Source: org_study_id
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