Clinical trial NCT01825772: Clinical and Radiographic Outcomes of Dental Implant Therapy
Official title: Clinical and Radiographic Outcomes of Dental Implant Therapy
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Peri-Implantitis
Keywords: Cross-Sectional Studies
Prevalence
Peri-Implantitis
Lead sponsor: Göteborg University
Sponsor class: OTHER
Collaborators: name: The Swedish Research Council
name: Swedish Social Insurance Agency
First posted: 2013-04-08
Enrollment: 596
Sex: ALL
Minimum age (years): 55
Maximum age (years): 85
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: CROSS_SECTIONAL
Sampling method: PROBABILITY_SAMPLE
Study population: The register of the Swedish Social Insurance Agency was searched for subjects scheduled for treatment with dental implants in 2003/2004. In a first group, subjects between 65 and 75 years old in 2003 were identified and from this pool of about 23.000 individuals, 3.000 subjects were randomly selected. In a second group, all subjects in the age of 45-60 years were identified (n=1716)from the same register. Thus, the total study population in the present project included 4716 subjects.

Brief summary: 900 subjects having received dental implants 9-10 years ago are invited for a clinical and radiographic examination. The individuals were randomly selected from the National Health Insurance data register in Sweden.

The clinical and radiographic examination of the 900 selected subjects will include assessments of implant loss, loss of prosthesis and technical / biological complications.

Biological complications will be assessed from the findings in the clinical and radiographic examinations. Thus, signs of pathology in peri-implant tissues, probing pocket depth (PPD) and bleeding/pus on probing (BoP) will be recorded. Marginal bone loss and other findings in radiographs will also be evaluated.

The prevalence, extent and severity of peri-implantitis will hereby be determined. Patient-centered outcomes will also be obtained.


Eligibility criteria: A questionnaire was distributed to the 4716 identified subjects. 3827 questionnaires (81.15%) were returned and, hence, included in the analysis.

From the sample of 3827 patients who responded to the questionnaire, 3107 (81.19%) gave their consent for access of patient files/records.

Patient files/records of 2780 individuals could be collected from the treating dentists (89.48%). Out of the 2780, 900 individuals were selected by random sampling, stratifying only for the two age groups.

Inclusion Criteria:

* Having received implants within the Swedish insurance system in 2003/2004.
* Being in one of the two age groups in 2003: 65-75 years and 45 - 55 years.
* Having answered the initial questionnaire
* Treating dentist provided patient files/records

Exclusion Criteria:

- Having died during the study period (collection of questionnaire and patient files/records)

Primary outcomes:
measure: Peri-implantitis
timeFrame: 9-10 years following implant installation
Secondary outcomes:
measure: Implant loss
timeFrame: 9-10 years after having received dental implants
Other outcomes:
measure: Technical complications
timeFrame: 9-10 years after receiving dental implants
Locations:
city: Gothenburg
country: Sweden
facility: Department of Periodontology, Institute of Odontology
Study officials:
affiliation: Göteborg University
name: Tord Berglundh, Professor
role: STUDY_DIRECTOR
affiliation: Göteborg University
name: Jan Derks, PhD Student
role: PRINCIPAL_INVESTIGATOR
References:
citation: Fransson C, Lekholm U, Jemt T, Berglundh T. Prevalence of subjects with progressive bone loss at implants. Clin Oral Implants Res. 2005 Aug;16(4):440-6. doi: 10.1111/j.1600-0501.2005.01137.x.
citation: Tomasi C, Derks J. Clinical research of peri-implant diseases--quality of reporting, case definitions and methods to study incidence, prevalence and risk factors of peri-implant diseases. J Clin Periodontol. 2012 Feb;39 Suppl 12:207-23. doi: 10.1111/j.1600-051X.2011.01831.x.
citation: Berglundh T, Persson L, Klinge B. A systematic review of the incidence of biological and technical complications in implant dentistry reported in prospective longitudinal studies of at least 5 years. J Clin Periodontol. 2002;29 Suppl 3:197-212; discussion 232-3. doi: 10.1034/j.1600-051x.29.s3.12.x.
citation: Derks J, Schaller D, Hakansson J, Wennstrom JL, Tomasi C, Berglundh T. Peri-implantitis - onset and pattern of progression. J Clin Periodontol. 2016 Apr;43(4):383-8. doi: 10.1111/jcpe.12535. Epub 2016 Mar 29.
citation: 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.
citation: Derks J, Hakansson J, Wennstrom JL, Tomasi C, Larsson M, Berglundh T. Effectiveness of implant therapy analyzed in a Swedish population: early and late implant loss. J Dent Res. 2015 Mar;94(3 Suppl):44S-51S. doi: 10.1177/0022034514563077. Epub 2014 Dec 11.