Purpose: This study investigated whether tooth wear status can predict bruxism level.
Materials and Methods: Sixteen Japanese subjects (eight bruxers and eight age- and
gender-matched controls; mean age 30 years) participated in this study. From dental
casts of these subjects, the tooth wear was scored by Murphy’s method. Bruxism level in
these subjects was also recorded for 5 consecutive nights in the subject’s home
environment using a force-based bruxism detecting system. The relationship between
the tooth wear score and bruxism data was evaluated statistically. Results: Correlation
analysis between the Murphy’s scores of maxillary and mandibular dental arch and
bruxism event duration score revealed no significant relationship between tooth wear
and current bruxism. Conclusion: Tooth wear status is not predictive of ongoing bruxism
level as measured by the force-based bruxism detection system in 30-year-old Japanese
subjects. Int J Prosthodont 2004;17:39–44.