Baltic Dental and Maxillofacial Journal
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September, 2010, Vol. 12, No. 3


© 2010 Stomatologija

Stomatologija 2010; 12 (3): 80-6 307 KB

Passive tactile sensibility of teeth and osseointegrated dental implants in the maxilla

Linards Grieznis, Peteris Apse, Leons Blumfelds


Purpose. The purpose of this study was to compare passive tactile sensibility of natural teeth and osseointegrated dental implants in the maxilla.
Material and methods. Twenty-nine patients (17 males and 12 females) were included in the study. Natural teeth were subdivided into two groups: non endodontically treated teeth (NETT) and endodontically treated teeth (ETT). A computer-controlled custom-made pressure sensitive device was modified for intraoral use. Pushing forces were applied parallel to the vertical axis of teeth and implants. The patient held a signal button which he/she activated as soon as touch was sensed. At this moment the computer registered passive tactile threshold – measured in Newtons. The mean values of passive tactile sensibility for natural teeth and dental implants were calculated. Comparison of the mean values was performed by the means of t-test.

Results. Passive tactile threshold for osseointegrated dental implants was 2.50 N (SD=1.39), and for teeth – 0.72 N (SD=0.49), for non endodontically treated teeth it was 0.66 N (SD=0.43) and for endodontically treated teeth – 0.96 N (SD=0.87) . The differences in mean values were statistically significant (p<0.001) except for mean values of NETT vs. ETT.

Conclusion. This study shows that patients with osseointegrated implants subjectively feel ”touch” sensation when greater force is applied compared with natural teeth.

Key words: tactile sensibility, osseoperception, proprioception, teeth, implants.

Received: 05 06 2010

Accepted for publishing: 23 09 2010

Linards Grieznis – D.D.S, Dip. Pros. Department of Prosthodontics, Riga Stradins University, Riga, Latvia

Peteris Apse – D.D.S., Dip. Pros., MSc (Toronto), Dr. hab. med. (Latvia), professor. Department of Prosthodontics, Riga Stradins University, Riga, Latvia

Leons Blumfelds – Dr. med., assist. professor. Department of Human Physiology and Biochemistry, Riga Stradins University, Riga , Latvia

Address correspondence to Dr. Linards Grieznis, Riga Stradins University Stomatology Institute, 20 Dzirciema Street, Riga, LV-1007, Latvia.

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