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Evaluation of patient and implant characteristics as potential prognostic factors for oral implant failures.

Irene Herrmann ; Ulf Lekholm ; Sture Holm (Institutionen för matematiska vetenskaper, matematisk statistik) ; Christina Kultje
The International journal of oral & maxillofacial implants (0882-2786). Vol. 20 (2005), 2, p. 220-30.
[Artikel, refereegranskad vetenskaplig]

PURPOSE: The purpose of this study was to evaluate patient, implant, and treatment characteristics to identify possible prognostic factors for implant failure. MATERIALS AND METHODS: Out of a database with different dental implant treatment protocols, a research database of 1 randomly selected implant per patient was created. The database consisted of 487 implants. Of these, 80 were withdrawn, 36 failed, and 371 remained successful during a 5-year follow-up period. Potential risk factors were evaluated by chi-square tests and post hoc analyses. RESULTS: Significant or strongly significant differences were found regarding implant failures as a result of jawbone quality, jaw shape, implant length, treatment protocol, and combinations of jawbone-related characteristics. Responsible clinics and number of implants supporting the restoration were factors that could not be associated with implant failure. DISCUSSION: Implant failures in this study were more often seen when negative patient-related factors were present. Approximately 65% of the patients with a combination of the 2 most negative bone-related factors (jawbone quality 4 and jaw shape D or E) experienced implant failure. However, only 3% of the patients had this combination. Implant length, the only implant-related factor evaluated, was also significantly correlated with the success rate, but implant length could also be regarded as a result of the jawbone volume available. Another negative patient-related factor was the treatment protocol; however, in most cases this was also indirectly or partly related to the status of the jawbone available for implant placement. CONCLUSION: Patient selection appears to be of importance for increasing implant success rates.

Nyckelord: Age Factors, Bone Density, Clinical Protocols, Databases, Dental Implants, statistics & numerical data, Dental Prosthesis Design, Dental Restoration Failure, Female, Follow-Up Studies, Humans, Jaw, pathology, Male, Middle Aged, Patient Selection, Prognosis, Prospective Studies, Risk Factors, Sex Factors, Surface Properties, Treatment Outcome



Denna post skapades 2007-10-24. Senast ändrad 2008-01-29.
CPL Pubid: 57110

 

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Institutioner (Chalmers)

Odontologiska institutionen (1991-2005)
Odontologiska institutionen, Avdelningen för oral och maxillofacial kirurgi (1991-2005)
Institutionen för matematiska vetenskaper, matematisk statistik (2005-2016)

Ämnesområden

Odontologi
Biomaterial
Kirurgisk forskning

Chalmers infrastruktur