1. 1D2 Dental Student, School of Dentistry
Factors associated with longevity of dental implants placed at the University of Louisville School of Dentistry: A retrospective review from Tomasz Czechura, MPH1, Theresa Mayfield, DMD2 , Weishao Lin, DDS3 and Michael J. Metz, DMD, MSD, MS, MBA2
1D2 Dental Student, School of Dentistry
2Department of General Dentistry and Oral Medicine, School of Dentistry 3Department of Oral Health and Rehabilitation, School of Dentistry
Introduction
Results
Table 2: Patient characteristics associated with implant success
Dental osseointegrated implants are prostheses for the replacement of missing teeth. Implants are permanent titanium posts that are anchored to the maxilla and mandible and are further topped with an individual crown or bridge.
After implants are placed, a 4 to 8 month osseointegration period occurs between the implant and the bone of the mandible or maxilla.
Osseointegration of dental implants is dependent on a multitude of conditions such as implant design, patient related medical risk factor, and surgery related factors.
Although 5 year dental implant success rates have been shown to be between 90 and 95% high risk groups for dental implant failure have to be established to guide the practitioner in the appropriate treatment planning process.
Table 1: Patient characteristics
Characteristic
Failure
Success
Age
20-29 10
30-39 17
40-49 35
50-59 2 55
60-69 77
70-79 1 47
80-89 4
Diabetes No 5
227
Yes 18
Gender
Female
125
Male
120
Implant Manufacturer
Straumann
203
Nobel
Bio-Horizons 11
ITI 14
Co-Morbidities
None 32
1 to 3 3
118
4 to 6 65
7 to 9 25
>10
Characteristic
Number of Patients
Age
Mean Age
58.28
Minimum 23
Maximum 87
Gender
Male
121
Female
129
Implant Manufacturer
Straumann
207
Nobel 1
Bio-Horizons 11
ITI 14
Implant Outcome
Success
245
Failure 5
Figure 1: Success rates based on site of implant placement
Objective
The objective of the study was to evaluate the rate and determine the factors associated with dental implant failure.
Conclusion
Female patients older than 50 years old who obtained Straumann dental implants were at highest risk of dental implant failure.
Methods
250 patients were analyzed in a retrospective review to determine the rate of dental implant failure and the factors associated with dental implant failure for dental implants placed at the University of Louisville between 2008 to 2013.
Patient data such as patient age, gender, co-morbidities, diabetes, placement in mandible or maxilla, placement in anterior or posterior teeth, dental implant manufacturer, bone graft placement, and implant success was collected.
A chi-square and logistic regression analysis was performed to determine which factors were statistically significantly associated with dental implant failure.
References
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